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< a href = "https://jimmysong.io" target = "_blank" class = "custom-link" > Jimmy Song< / a >
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< li class = "header" > 前言< / li >
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< b > 1.1.< / b >
序言
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< li class = "chapter " data-level = "1.2" data-path = "../cloud-native/cncf.html" >
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< b > 1.2.< / b >
CNCF - 云原生计算基金会简介
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< li class = "header" > 云原生< / li >
< li class = "chapter " data-level = "2.1" data-path = "../cloud-native/play-with-kubernetes.html" >
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< b > 2.1.< / b >
Play with Kubernetes
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< b > 2.2.< / b >
Kubernetes与云原生应用概览
< / a >
< / li >
< li class = "chapter " data-level = "2.3" data-path = "../cloud-native/from-kubernetes-to-cloud-native.html" >
< a href = "../cloud-native/from-kubernetes-to-cloud-native.html" >
< b > 2.3.< / b >
云原生应用之路——从Kubernetes到Cloud Native
< / a >
< / li >
< li class = "header" > 概念与原理< / li >
< li class = "chapter " data-level = "3.1" data-path = "./" >
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< b > 3.1.< / b >
Kubernetes架构
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< li class = "chapter " data-level = "3.1.1" data-path = "concepts.html" >
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< b > 3.1.1.< / b >
设计理念
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< b > 3.1.2.< / b >
Etcd解析
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< b > 3.1.3.< / b >
开放接口
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< b > 3.1.3.1.< / b >
CRI - Container Runtime Interface（ ）
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< b > 3.1.3.2.< / b >
CNI - Container Network Interface（ ）
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< b > 3.1.3.3.< / b >
CSI - Container Storage Interface（ ）
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< b > 3.2.< / b >
Kubernetes中的网络
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< a href = "networking.html" >
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< b > 3.2.1.< / b >
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Kubernetes中的网络解析——以flannel为例
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< / li >
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< li class = "chapter " data-level = "3.2.2" data-path = "calico.html" >
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< a href = "calico.html" >
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< b > 3.2.2.< / b >
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Kubernetes中的网络解析——以calico为例
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< a href = "objects.html" >
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< b > 3.3.< / b >
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资源对象与基本概念解析
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< a href = "pod-state-and-lifecycle.html" >
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< b > 3.4.< / b >
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Pod状态与生命周期管理
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< b > 3.4.1.< / b >
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Pod概览
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< li class = "chapter " data-level = "3.4.2" data-path = "pod.html" >
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< a href = "pod.html" >
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< b > 3.4.2.< / b >
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Pod解析
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< li class = "chapter " data-level = "3.4.3" data-path = "init-containers.html" >
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< a href = "init-containers.html" >
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< b > 3.4.3.< / b >
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Init容器
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< b > 3.4.4.< / b >
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Pause容器
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< b > 3.4.5.< / b >
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Pod安全策略
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< / li >
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< a href = "pod-lifecycle.html" >
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< b > 3.4.6.< / b >
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Pod的生命周期
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< li class = "chapter " data-level = "3.4.7" data-path = "pod-hook.html" >
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< a href = "pod-hook.html" >
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< b > 3.4.7.< / b >
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Pod Hook
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< li class = "chapter " data-level = "3.4.8" data-path = "pod-preset.html" >
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< a href = "pod-preset.html" >
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< b > 3.4.8.< / b >
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Pod Preset
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< li class = "chapter " data-level = "3.4.9" data-path = "pod-disruption-budget.html" >
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< a href = "pod-disruption-budget.html" >
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< b > 3.4.9.< / b >
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Pod中断与PDB（ ）
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< li class = "chapter " data-level = "3.5" data-path = "cluster.html" >
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< a href = "cluster.html" >
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< b > 3.5.< / b >
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集群资源管理
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< li class = "chapter " data-level = "3.5.1" data-path = "node.html" >
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< a href = "node.html" >
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< b > 3.5.1.< / b >
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Node
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< li class = "chapter " data-level = "3.5.2" data-path = "namespace.html" >
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< a href = "namespace.html" >
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< b > 3.5.2.< / b >
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Namespace
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< li class = "chapter " data-level = "3.5.3" data-path = "label.html" >
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< a href = "label.html" >
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< b > 3.5.3.< / b >
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Label
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< li class = "chapter " data-level = "3.5.4" data-path = "annotation.html" >
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< a href = "annotation.html" >
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< b > 3.5.4.< / b >
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Annotation
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< li class = "chapter " data-level = "3.5.5" data-path = "taint-and-toleration.html" >
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< a href = "taint-and-toleration.html" >
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< b > 3.5.5.< / b >
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Taint和Toleration（ ）
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< li class = "chapter " data-level = "3.5.6" data-path = "garbage-collection.html" >
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< a href = "garbage-collection.html" >
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< b > 3.5.6.< / b >
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垃圾收集
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< li class = "chapter " data-level = "3.6" data-path = "controllers.html" >
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< a href = "controllers.html" >
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< b > 3.6.< / b >
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控制器
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< li class = "chapter " data-level = "3.6.1" data-path = "deployment.html" >
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< a href = "deployment.html" >
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< b > 3.6.1.< / b >
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Deployment
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< li class = "chapter " data-level = "3.6.2" data-path = "statefulset.html" >
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< a href = "statefulset.html" >
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< b > 3.6.2.< / b >
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StatefulSet
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< li class = "chapter " data-level = "3.6.3" data-path = "daemonset.html" >
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< a href = "daemonset.html" >
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< b > 3.6.3.< / b >
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DaemonSet
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< li class = "chapter " data-level = "3.6.4" data-path = "replicaset.html" >
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< a href = "replicaset.html" >
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< b > 3.6.4.< / b >
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ReplicationController和ReplicaSet
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< li class = "chapter " data-level = "3.6.5" data-path = "job.html" >
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< a href = "job.html" >
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< b > 3.6.5.< / b >
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Job
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< li class = "chapter " data-level = "3.6.6" data-path = "cronjob.html" >
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< a href = "cronjob.html" >
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< b > 3.6.6.< / b >
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CronJob
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< li class = "chapter " data-level = "3.6.7" data-path = "horizontal-pod-autoscaling.html" >
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< a href = "horizontal-pod-autoscaling.html" >
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< b > 3.6.7.< / b >
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Horizontal Pod Autoscaling
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< ul class = "articles" >
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< li class = "chapter " data-level = "3.6.7.1" data-path = "custom-metrics-hpa.html" >
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< a href = "custom-metrics-hpa.html" >
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< b > 3.6.7.1.< / b >
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自定义指标HPA
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< li class = "chapter " data-level = "3.7" data-path = "service-discovery.html" >
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< a href = "service-discovery.html" >
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< b > 3.7.< / b >
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服务发现
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< li class = "chapter " data-level = "3.7.1" data-path = "service.html" >
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< a href = "service.html" >
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< b > 3.7.1.< / b >
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Service
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< li class = "chapter " data-level = "3.7.2" data-path = "ingress.html" >
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< a href = "ingress.html" >
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< b > 3.7.2.< / b >
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Ingress
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< a href = "traefik-ingress-controller.html" >
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< b > 3.7.2.1.< / b >
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Traefik Ingress Controller
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< a href = "authentication-and-permission.html" >
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< b > 3.8.< / b >
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身份与权限控制
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< a href = "serviceaccount.html" >
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< b > 3.8.1.< / b >
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ServiceAccount
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< a href = "rbac.html" >
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< b > 3.8.2.< / b >
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RBAC——基于角色的访问控制
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< a href = "network-policy.html" >
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< b > 3.8.3.< / b >
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NetworkPolicy
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< li class = "chapter " data-level = "3.9" data-path = "storage.html" >
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< a href = "storage.html" >
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< b > 3.9.< / b >
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存储
< / a >
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< ul class = "articles" >
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< li class = "chapter " data-level = "3.9.1" data-path = "secret.html" >
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< a href = "secret.html" >
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< b > 3.9.1.< / b >
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Secret
< / a >
< / li >
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< li class = "chapter " data-level = "3.9.2" data-path = "configmap.html" >
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< a href = "configmap.html" >
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< b > 3.9.2.< / b >
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ConfigMap
< / a >
< ul class = "articles" >
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< li class = "chapter " data-level = "3.9.2.1" data-path = "configmap-hot-update.html" >
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< a href = "configmap-hot-update.html" >
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< b > 3.9.2.1.< / b >
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ConfigMap的热更新
< / a >
< / li >
< / ul >
< / li >
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< li class = "chapter " data-level = "3.9.3" data-path = "volume.html" >
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< a href = "volume.html" >
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< b > 3.9.3.< / b >
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Volume
< / a >
< / li >
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< li class = "chapter " data-level = "3.9.4" data-path = "persistent-volume.html" >
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< a href = "persistent-volume.html" >
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< b > 3.9.4.< / b >
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Persistent Volume（ ）
< / a >
< / li >
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< li class = "chapter " data-level = "3.9.5" data-path = "storageclass.html" >
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< a href = "storageclass.html" >
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< b > 3.9.5.< / b >
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Storage Class
< / a >
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< / li >
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< / ul >
< / li >
< li class = "chapter " data-level = "3.10" data-path = "extension.html" >
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< a href = "extension.html" >
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< b > 3.10.< / b >
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集群扩展
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< / a >
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< ul class = "articles" >
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< li class = "chapter " data-level = "3.10.1" data-path = "custom-resource.html" >
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< a href = "custom-resource.html" >
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< b > 3.10.1.< / b >
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使用自定义资源扩展API
< / a >
< / li >
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< li class = "chapter " data-level = "3.10.2" data-path = "aggregated-api-server.html" >
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< a href = "aggregated-api-server.html" >
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< b > 3.10.2.< / b >
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Aggregated API Server
< / a >
< / li >
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< li class = "chapter " data-level = "3.10.3" data-path = "apiservice.html" >
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< a href = "apiservice.html" >
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< b > 3.10.3.< / b >
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APIService
< / a >
< / li >
< / ul >
< / li >
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< li class = "chapter " data-level = "3.11" data-path = "scheduling.html" >
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< a href = "scheduling.html" >
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< b > 3.11.< / b >
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资源调度
< / a >
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< / li >
< li class = "header" > 用户指南< / li >
< li class = "chapter " data-level = "4.1" data-path = "../guide/" >
< a href = "../guide/" >
< b > 4.1.< / b >
用户指南
< / a >
< / li >
< li class = "chapter " data-level = "4.2" data-path = "../guide/resource-configuration.html" >
< a href = "../guide/resource-configuration.html" >
< b > 4.2.< / b >
资源对象配置
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "4.2.1" data-path = "../guide/configure-liveness-readiness-probes.html" >
< a href = "../guide/configure-liveness-readiness-probes.html" >
< b > 4.2.1.< / b >
配置Pod的liveness和readiness探针
< / a >
< / li >
< li class = "chapter " data-level = "4.2.2" data-path = "../guide/configure-pod-service-account.html" >
< a href = "../guide/configure-pod-service-account.html" >
< b > 4.2.2.< / b >
配置Pod的Service Account
< / a >
< / li >
< li class = "chapter " data-level = "4.2.3" data-path = "../guide/secret-configuration.html" >
< a href = "../guide/secret-configuration.html" >
< b > 4.2.3.< / b >
Secret配置
< / a >
< / li >
< li class = "chapter " data-level = "4.2.4" data-path = "../guide/resource-quota-management.html" >
< a href = "../guide/resource-quota-management.html" >
< b > 4.2.4.< / b >
管理namespace中的资源配额
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "4.3" data-path = "../guide/command-usage.html" >
< a href = "../guide/command-usage.html" >
< b > 4.3.< / b >
命令使用
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "4.3.1" data-path = "../guide/docker-cli-to-kubectl.html" >
< a href = "../guide/docker-cli-to-kubectl.html" >
< b > 4.3.1.< / b >
docker用户过度到kubectl命令行指南
< / a >
< / li >
< li class = "chapter " data-level = "4.3.2" data-path = "../guide/using-kubectl.html" >
< a href = "../guide/using-kubectl.html" >
< b > 4.3.2.< / b >
kubectl命令概览
< / a >
< / li >
< li class = "chapter " data-level = "4.3.3" data-path = "../guide/kubectl-cheatsheet.html" >
< a href = "../guide/kubectl-cheatsheet.html" >
< b > 4.3.3.< / b >
kubectl命令技巧大全
< / a >
< / li >
< li class = "chapter " data-level = "4.3.4" data-path = "../guide/using-etcdctl-to-access-kubernetes-data.html" >
< a href = "../guide/using-etcdctl-to-access-kubernetes-data.html" >
< b > 4.3.4.< / b >
使用etcdctl访问kubernetes数据
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "4.4" data-path = "../guide/cluster-security-management.html" >
< a href = "../guide/cluster-security-management.html" >
< b > 4.4.< / b >
集群安全性管理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "4.4.1" data-path = "../guide/managing-tls-in-a-cluster.html" >
< a href = "../guide/managing-tls-in-a-cluster.html" >
< b > 4.4.1.< / b >
管理集群中的TLS
< / a >
< / li >
< li class = "chapter " data-level = "4.4.2" data-path = "../guide/kubelet-authentication-authorization.html" >
< a href = "../guide/kubelet-authentication-authorization.html" >
< b > 4.4.2.< / b >
kubelet的认证授权
< / a >
< / li >
< li class = "chapter " data-level = "4.4.3" data-path = "../guide/tls-bootstrapping.html" >
< a href = "../guide/tls-bootstrapping.html" >
< b > 4.4.3.< / b >
TLS bootstrap
< / a >
< / li >
< li class = "chapter " data-level = "4.4.4" data-path = "../guide/kubectl-user-authentication-authorization.html" >
< a href = "../guide/kubectl-user-authentication-authorization.html" >
< b > 4.4.4.< / b >
创建用户认证授权的kubeconfig文件
< / a >
< / li >
< li class = "chapter " data-level = "4.4.5" data-path = "../guide/ip-masq-agent.html" >
< a href = "../guide/ip-masq-agent.html" >
< b > 4.4.5.< / b >
IP伪装代理
< / a >
< / li >
< li class = "chapter " data-level = "4.4.6" data-path = "../guide/auth-with-kubeconfig-or-token.html" >
< a href = "../guide/auth-with-kubeconfig-or-token.html" >
< b > 4.4.6.< / b >
使用kubeconfig或token进行用户身份认证
< / a >
< / li >
< li class = "chapter " data-level = "4.4.7" data-path = "../guide/authentication.html" >
< a href = "../guide/authentication.html" >
< b > 4.4.7.< / b >
Kubernetes中的用户与身份认证授权
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "4.5" data-path = "../guide/access-kubernetes-cluster.html" >
< a href = "../guide/access-kubernetes-cluster.html" >
< b > 4.5.< / b >
访问Kubernetes集群
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "4.5.1" data-path = "../guide/access-cluster.html" >
< a href = "../guide/access-cluster.html" >
< b > 4.5.1.< / b >
访问集群
< / a >
< / li >
< li class = "chapter " data-level = "4.5.2" data-path = "../guide/authenticate-across-clusters-kubeconfig.html" >
< a href = "../guide/authenticate-across-clusters-kubeconfig.html" >
< b > 4.5.2.< / b >
使用kubeconfig文件配置跨集群认证
< / a >
< / li >
< li class = "chapter " data-level = "4.5.3" data-path = "../guide/connecting-to-applications-port-forward.html" >
< a href = "../guide/connecting-to-applications-port-forward.html" >
< b > 4.5.3.< / b >
通过端口转发访问集群中的应用程序
< / a >
< / li >
< li class = "chapter " data-level = "4.5.4" data-path = "../guide/service-access-application-cluster.html" >
< a href = "../guide/service-access-application-cluster.html" >
< b > 4.5.4.< / b >
使用service访问群集中的应用程序
< / a >
< / li >
< li class = "chapter " data-level = "4.5.5" data-path = "../guide/accessing-kubernetes-pods-from-outside-of-the-cluster.html" >
< a href = "../guide/accessing-kubernetes-pods-from-outside-of-the-cluster.html" >
< b > 4.5.5.< / b >
从外部访问Kubernetes中的Pod
< / a >
< / li >
< li class = "chapter " data-level = "4.5.6" data-path = "../guide/cabin-mobile-dashboard-for-kubernetes.html" >
< a href = "../guide/cabin-mobile-dashboard-for-kubernetes.html" >
< b > 4.5.6.< / b >
Cabin - Kubernetes手机客户端
< / a >
< / li >
< li class = "chapter " data-level = "4.5.7" data-path = "../guide/kubernetes-desktop-client.html" >
< a href = "../guide/kubernetes-desktop-client.html" >
< b > 4.5.7.< / b >
Kubernetic - Kubernetes桌面客户端
< / a >
< / li >
< li class = "chapter " data-level = "4.5.8" data-path = "../guide/kubernator-kubernetes-ui.html" >
< a href = "../guide/kubernator-kubernetes-ui.html" >
< b > 4.5.8.< / b >
Kubernator - 更底层的Kubernetes UI
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "4.6" data-path = "../guide/application-development-deployment-flow.html" >
< a href = "../guide/application-development-deployment-flow.html" >
< b > 4.6.< / b >
在Kubernetes中开发部署应用
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "4.6.1" data-path = "../guide/deploy-applications-in-kubernetes.html" >
< a href = "../guide/deploy-applications-in-kubernetes.html" >
< b > 4.6.1.< / b >
适用于kubernetes的应用开发部署流程
< / a >
< / li >
< li class = "chapter " data-level = "4.6.2" data-path = "../guide/migrating-hadoop-yarn-to-kubernetes.html" >
< a href = "../guide/migrating-hadoop-yarn-to-kubernetes.html" >
< b > 4.6.2.< / b >
迁移传统应用到Kubernetes中——以Hadoop YARN为例
< / a >
< / li >
< li class = "chapter " data-level = "4.6.3" data-path = "../guide/using-statefulset.html" >
< a href = "../guide/using-statefulset.html" >
< b > 4.6.3.< / b >
使用StatefulSet部署用状态应用
< / a >
< / li >
< / ul >
< / li >
< li class = "header" > 最佳实践< / li >
< li class = "chapter " data-level = "5.1" data-path = "../practice/" >
< a href = "../practice/" >
< b > 5.1.< / b >
最佳实践概览
< / a >
< / li >
< li class = "chapter " data-level = "5.2" data-path = "../practice/install-kubernetes-on-centos.html" >
< a href = "../practice/install-kubernetes-on-centos.html" >
< b > 5.2.< / b >
在CentOS上部署Kubernetes集群
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.2.1" data-path = "../practice/create-tls-and-secret-key.html" >
< a href = "../practice/create-tls-and-secret-key.html" >
< b > 5.2.1.< / b >
创建TLS证书和秘钥
< / a >
< / li >
< li class = "chapter " data-level = "5.2.2" data-path = "../practice/create-kubeconfig.html" >
< a href = "../practice/create-kubeconfig.html" >
< b > 5.2.2.< / b >
创建kubeconfig文件
< / a >
< / li >
< li class = "chapter " data-level = "5.2.3" data-path = "../practice/etcd-cluster-installation.html" >
< a href = "../practice/etcd-cluster-installation.html" >
< b > 5.2.3.< / b >
创建高可用etcd集群
< / a >
< / li >
< li class = "chapter " data-level = "5.2.4" data-path = "../practice/kubectl-installation.html" >
< a href = "../practice/kubectl-installation.html" >
< b > 5.2.4.< / b >
安装kubectl命令行工具
< / a >
< / li >
< li class = "chapter " data-level = "5.2.5" data-path = "../practice/master-installation.html" >
< a href = "../practice/master-installation.html" >
< b > 5.2.5.< / b >
部署master节点
< / a >
< / li >
< li class = "chapter " data-level = "5.2.6" data-path = "../practice/flannel-installation.html" >
< a href = "../practice/flannel-installation.html" >
< b > 5.2.6.< / b >
安装flannel网络插件
< / a >
< / li >
< li class = "chapter " data-level = "5.2.7" data-path = "../practice/node-installation.html" >
< a href = "../practice/node-installation.html" >
< b > 5.2.7.< / b >
部署node节点
< / a >
< / li >
< li class = "chapter " data-level = "5.2.8" data-path = "../practice/kubedns-addon-installation.html" >
< a href = "../practice/kubedns-addon-installation.html" >
< b > 5.2.8.< / b >
安装kubedns插件
< / a >
< / li >
< li class = "chapter " data-level = "5.2.9" data-path = "../practice/dashboard-addon-installation.html" >
< a href = "../practice/dashboard-addon-installation.html" >
< b > 5.2.9.< / b >
安装dashboard插件
< / a >
< / li >
< li class = "chapter " data-level = "5.2.10" data-path = "../practice/heapster-addon-installation.html" >
< a href = "../practice/heapster-addon-installation.html" >
< b > 5.2.10.< / b >
安装heapster插件
< / a >
< / li >
< li class = "chapter " data-level = "5.2.11" data-path = "../practice/efk-addon-installation.html" >
< a href = "../practice/efk-addon-installation.html" >
< b > 5.2.11.< / b >
安装EFK插件
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.3" data-path = "../practice/service-discovery-and-loadbalancing.html" >
< a href = "../practice/service-discovery-and-loadbalancing.html" >
< b > 5.3.< / b >
服务发现与负载均衡
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.3.1" data-path = "../practice/traefik-ingress-installation.html" >
< a href = "../practice/traefik-ingress-installation.html" >
< b > 5.3.1.< / b >
安装Traefik ingress
< / a >
< / li >
< li class = "chapter " data-level = "5.3.2" data-path = "../practice/distributed-load-test.html" >
< a href = "../practice/distributed-load-test.html" >
< b > 5.3.2.< / b >
分布式负载测试
< / a >
< / li >
< li class = "chapter " data-level = "5.3.3" data-path = "../practice/network-and-cluster-perfermance-test.html" >
< a href = "../practice/network-and-cluster-perfermance-test.html" >
< b > 5.3.3.< / b >
网络和集群性能测试
< / a >
< / li >
< li class = "chapter " data-level = "5.3.4" data-path = "../practice/edge-node-configuration.html" >
< a href = "../practice/edge-node-configuration.html" >
< b > 5.3.4.< / b >
边缘节点配置
< / a >
< / li >
< li class = "chapter " data-level = "5.3.5" data-path = "../practice/nginx-ingress-installation.html" >
< a href = "../practice/nginx-ingress-installation.html" >
< b > 5.3.5.< / b >
安装Nginx ingress
< / a >
< / li >
< li class = "chapter " data-level = "5.3.6" data-path = "../practice/configuring-dns.html" >
< a href = "../practice/configuring-dns.html" >
< b > 5.3.6.< / b >
配置内置DNS（ ）
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.4" data-path = "../practice/operation.html" >
< a href = "../practice/operation.html" >
< b > 5.4.< / b >
运维管理
< / a >
< ul class = "articles" >
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< li class = "chapter " data-level = "5.4.1" data-path = "../practice/master-ha.html" >
2018-02-05 22:14:09 +08:00
2018-03-20 10:59:44 +08:00
< a href = "../practice/master-ha.html" >
2018-02-05 22:14:09 +08:00
< b > 5.4.1.< / b >
2018-03-20 10:59:44 +08:00
Master节点高可用
< / a >
< / li >
< li class = "chapter " data-level = "5.4.2" data-path = "../practice/service-rolling-update.html" >
< a href = "../practice/service-rolling-update.html" >
< b > 5.4.2.< / b >
2018-02-05 22:14:09 +08:00
服务滚动升级
< / a >
< / li >
2018-03-20 10:59:44 +08:00
< li class = "chapter " data-level = "5.4.3" data-path = "../practice/app-log-collection.html" >
2018-02-05 22:14:09 +08:00
< a href = "../practice/app-log-collection.html" >
2018-03-20 10:59:44 +08:00
< b > 5.4.3.< / b >
2018-02-05 22:14:09 +08:00
应用日志收集
< / a >
< / li >
2018-03-20 10:59:44 +08:00
< li class = "chapter " data-level = "5.4.4" data-path = "../practice/configuration-best-practice.html" >
2018-02-05 22:14:09 +08:00
< a href = "../practice/configuration-best-practice.html" >
2018-03-20 10:59:44 +08:00
< b > 5.4.4.< / b >
2018-02-05 22:14:09 +08:00
配置最佳实践
< / a >
< / li >
2018-03-20 10:59:44 +08:00
< li class = "chapter " data-level = "5.4.5" data-path = "../practice/monitor.html" >
2018-02-05 22:14:09 +08:00
< a href = "../practice/monitor.html" >
2018-03-20 10:59:44 +08:00
< b > 5.4.5.< / b >
2018-02-05 22:14:09 +08:00
集群及应用监控
< / a >
< / li >
2018-03-20 10:59:44 +08:00
< li class = "chapter " data-level = "5.4.6" data-path = "../practice/data-persistence-problem.html" >
2018-02-05 22:14:09 +08:00
< a href = "../practice/data-persistence-problem.html" >
2018-03-20 10:59:44 +08:00
< b > 5.4.6.< / b >
2018-02-05 22:14:09 +08:00
数据持久化问题
< / a >
< / li >
2018-03-20 10:59:44 +08:00
< li class = "chapter " data-level = "5.4.7" data-path = "../practice/manage-compute-resources-container.html" >
2018-02-05 22:14:09 +08:00
< a href = "../practice/manage-compute-resources-container.html" >
2018-03-20 10:59:44 +08:00
< b > 5.4.7.< / b >
2018-02-05 22:14:09 +08:00
管理容器的计算资源
< / a >
2018-02-24 11:49:48 +08:00
< / li >
2018-03-20 10:59:44 +08:00
< li class = "chapter " data-level = "5.4.8" data-path = "../practice/federation.html" >
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< a href = "../practice/federation.html" >
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< b > 5.4.8.< / b >
2018-02-24 11:49:48 +08:00
集群联邦
< / a >
2018-02-05 22:14:09 +08:00
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.5" data-path = "../practice/storage.html" >
< a href = "../practice/storage.html" >
< b > 5.5.< / b >
存储管理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.5.1" data-path = "../practice/glusterfs.html" >
< a href = "../practice/glusterfs.html" >
< b > 5.5.1.< / b >
GlusterFS
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.5.1.1" data-path = "../practice/using-glusterfs-for-persistent-storage.html" >
< a href = "../practice/using-glusterfs-for-persistent-storage.html" >
< b > 5.5.1.1.< / b >
使用GlusterFS做持久化存储
< / a >
< / li >
< li class = "chapter " data-level = "5.5.1.2" data-path = "../practice/storage-for-containers-using-glusterfs-with-openshift.html" >
< a href = "../practice/storage-for-containers-using-glusterfs-with-openshift.html" >
< b > 5.5.1.2.< / b >
在OpenShift中使用GlusterFS做持久化存储
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.5.2" data-path = "../practice/cephfs.html" >
< a href = "../practice/cephfs.html" >
< b > 5.5.2.< / b >
CephFS
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.5.2.1" data-path = "../practice/using-ceph-for-persistent-storage.html" >
< a href = "../practice/using-ceph-for-persistent-storage.html" >
< b > 5.5.2.1.< / b >
使用Ceph做持久化存储
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.5.3" data-path = "../practice/openebs.html" >
< a href = "../practice/openebs.html" >
< b > 5.5.3.< / b >
OpenEBS
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.5.3.1" data-path = "../practice/using-openebs-for-persistent-storage.html" >
< a href = "../practice/using-openebs-for-persistent-storage.html" >
< b > 5.5.3.1.< / b >
使用OpenEBS做持久化存储
< / a >
< / li >
< / ul >
2018-02-24 22:56:37 +08:00
< / li >
< li class = "chapter " data-level = "5.5.4" data-path = "../practice/rook.html" >
< a href = "../practice/rook.html" >
< b > 5.5.4.< / b >
Rook
< / a >
2018-02-05 22:14:09 +08:00
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.6" data-path = "../practice/monitoring.html" >
< a href = "../practice/monitoring.html" >
< b > 5.6.< / b >
集群与应用监控
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.6.1" data-path = "../practice/heapster.html" >
< a href = "../practice/heapster.html" >
< b > 5.6.1.< / b >
Heapster
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.6.1.1" data-path = "../practice/using-heapster-to-get-object-metrics.html" >
< a href = "../practice/using-heapster-to-get-object-metrics.html" >
< b > 5.6.1.1.< / b >
使用Heapster获取集群和对象的metric数据
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.6.2" data-path = "../practice/prometheus.html" >
< a href = "../practice/prometheus.html" >
< b > 5.6.2.< / b >
Prometheus
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.6.2.1" data-path = "../practice/using-prometheus-to-monitor-kuberentes-cluster.html" >
< a href = "../practice/using-prometheus-to-monitor-kuberentes-cluster.html" >
< b > 5.6.2.1.< / b >
使用Prometheus监控kubernetes集群
< / a >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.7" data-path = "../practice/services-management-tool.html" >
< a href = "../practice/services-management-tool.html" >
< b > 5.7.< / b >
服务编排管理
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.7.1" data-path = "../practice/helm.html" >
< a href = "../practice/helm.html" >
< b > 5.7.1.< / b >
使用Helm管理kubernetes应用
< / a >
< / li >
< li class = "chapter " data-level = "5.7.2" data-path = "../practice/create-private-charts-repo.html" >
< a href = "../practice/create-private-charts-repo.html" >
< b > 5.7.2.< / b >
构建私有Chart仓库
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.8" data-path = "../practice/ci-cd.html" >
< a href = "../practice/ci-cd.html" >
< b > 5.8.< / b >
持续集成与发布
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.8.1" data-path = "../practice/jenkins-ci-cd.html" >
< a href = "../practice/jenkins-ci-cd.html" >
< b > 5.8.1.< / b >
使用Jenkins进行持续集成与发布
< / a >
< / li >
< li class = "chapter " data-level = "5.8.2" data-path = "../practice/drone-ci-cd.html" >
< a href = "../practice/drone-ci-cd.html" >
< b > 5.8.2.< / b >
使用Drone进行持续集成与发布
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "5.9" data-path = "../practice/update-and-upgrade.html" >
< a href = "../practice/update-and-upgrade.html" >
< b > 5.9.< / b >
更新与升级
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "5.9.1" data-path = "../practice/manually-upgrade.html" >
< a href = "../practice/manually-upgrade.html" >
< b > 5.9.1.< / b >
手动升级Kubernetes集群
< / a >
< / li >
< li class = "chapter " data-level = "5.9.2" data-path = "../practice/dashboard-upgrade.html" >
< a href = "../practice/dashboard-upgrade.html" >
< b > 5.9.2.< / b >
升级dashboard
< / a >
< / li >
< / ul >
< / li >
< li class = "header" > 领域应用< / li >
< li class = "chapter " data-level = "6.1" data-path = "../usecases/" >
< a href = "../usecases/" >
< b > 6.1.< / b >
领域应用概览
< / a >
< / li >
< li class = "chapter " data-level = "6.2" data-path = "../usecases/microservices.html" >
< a href = "../usecases/microservices.html" >
< b > 6.2.< / b >
微服务架构
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.2.1" data-path = "../usecases/service-discovery-in-microservices.html" >
< a href = "../usecases/service-discovery-in-microservices.html" >
< b > 6.2.1.< / b >
微服务中的服务发现
< / a >
2018-03-13 17:43:40 +08:00
< / li >
< li class = "chapter " data-level = "6.2.2" data-path = "../usecases/microservices-for-java-developers.html" >
< a href = "../usecases/microservices-for-java-developers.html" >
< b > 6.2.2.< / b >
使用Java构建微服务并发布到Kubernetes平台
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.2.2.1" data-path = "../usecases/spring-boot-quick-start-guide.html" >
< a href = "../usecases/spring-boot-quick-start-guide.html" >
< b > 6.2.2.1.< / b >
Spring Boot快速开始指南
< / a >
< / li >
< / ul >
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< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "6.3" data-path = "../usecases/service-mesh.html" >
< a href = "../usecases/service-mesh.html" >
< b > 6.3.< / b >
Service Mesh 服务网格
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.3.1" data-path = "../usecases/istio.html" >
< a href = "../usecases/istio.html" >
< b > 6.3.1.< / b >
Istio
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.3.1.1" data-path = "../usecases/istio-installation.html" >
< a href = "../usecases/istio-installation.html" >
< b > 6.3.1.1.< / b >
安装并试用Istio service mesh
< / a >
< / li >
< li class = "chapter " data-level = "6.3.1.2" data-path = "../usecases/configuring-request-routing.html" >
< a href = "../usecases/configuring-request-routing.html" >
< b > 6.3.1.2.< / b >
配置请求的路由规则
< / a >
< / li >
< li class = "chapter " data-level = "6.3.1.3" data-path = "../usecases/install-and-expand-istio-mesh.html" >
< a href = "../usecases/install-and-expand-istio-mesh.html" >
< b > 6.3.1.3.< / b >
安装和拓展Istio service mesh
< / a >
< / li >
< li class = "chapter " data-level = "6.3.1.4" data-path = "../usecases/integrating-vms.html" >
< a href = "../usecases/integrating-vms.html" >
< b > 6.3.1.4.< / b >
集成虚拟机
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "6.3.2" data-path = "../usecases/linkerd.html" >
< a href = "../usecases/linkerd.html" >
< b > 6.3.2.< / b >
Linkerd
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.3.2.1" data-path = "../usecases/linkerd-user-guide.html" >
< a href = "../usecases/linkerd-user-guide.html" >
< b > 6.3.2.1.< / b >
Linkerd 使用指南
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "6.3.3" data-path = "../usecases/conduit.html" >
< a href = "../usecases/conduit.html" >
< b > 6.3.3.< / b >
Conduit
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.3.3.1" data-path = "../usecases/conduit-overview.html" >
< a href = "../usecases/conduit-overview.html" >
< b > 6.3.3.1.< / b >
Condiut概览
< / a >
< / li >
< li class = "chapter " data-level = "6.3.3.2" data-path = "../usecases/conduit-installation.html" >
< a href = "../usecases/conduit-installation.html" >
< b > 6.3.3.2.< / b >
安装Conduit
< / a >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "6.4" data-path = "../usecases/big-data.html" >
< a href = "../usecases/big-data.html" >
< b > 6.4.< / b >
大数据
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.4.1" data-path = "../usecases/spark-standalone-on-kubernetes.html" >
< a href = "../usecases/spark-standalone-on-kubernetes.html" >
< b > 6.4.1.< / b >
Spark standalone on Kubernetes
< / a >
< / li >
< li class = "chapter " data-level = "6.4.2" data-path = "../usecases/running-spark-with-kubernetes-native-scheduler.html" >
< a href = "../usecases/running-spark-with-kubernetes-native-scheduler.html" >
< b > 6.4.2.< / b >
运行支持Kubernetes原生调度的Spark程序
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "6.5" data-path = "../usecases/serverless.html" >
< a href = "../usecases/serverless.html" >
< b > 6.5.< / b >
Serverless架构
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.5.1" data-path = "../usecases/understanding-serverless.html" >
< a href = "../usecases/understanding-serverless.html" >
< b > 6.5.1.< / b >
理解Serverless
< / a >
< / li >
< li class = "chapter " data-level = "6.5.2" data-path = "../usecases/faas.html" >
< a href = "../usecases/faas.html" >
< b > 6.5.2.< / b >
FaaS-函数即服务
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "6.5.2.1" data-path = "../usecases/openfaas-quick-start.html" >
< a href = "../usecases/openfaas-quick-start.html" >
< b > 6.5.2.1.< / b >
OpenFaaS快速入门指南
< / a >
< / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "6.6" data-path = "../usecases/edge-computing.html" >
< a href = "../usecases/edge-computing.html" >
< b > 6.6.< / b >
边缘计算
< / a >
< / li >
< li class = "header" > 开发指南< / li >
< li class = "chapter " data-level = "7.1" data-path = "../develop/" >
< a href = "../develop/" >
< b > 7.1.< / b >
开发指南概览
< / a >
< / li >
< li class = "chapter " data-level = "7.2" data-path = "../develop/sigs-and-working-group.html" >
< a href = "../develop/sigs-and-working-group.html" >
< b > 7.2.< / b >
SIG和工作组
< / a >
< / li >
< li class = "chapter " data-level = "7.3" data-path = "../develop/developing-environment.html" >
< a href = "../develop/developing-environment.html" >
< b > 7.3.< / b >
开发环境搭建
< / a >
< / li >
< li class = "chapter " data-level = "7.4" data-path = "../develop/using-vagrant-and-virtualbox-for-development.html" >
< a href = "../develop/using-vagrant-and-virtualbox-for-development.html" >
< b > 7.4.< / b >
本地分布式开发环境搭建（ ）
< / a >
< / li >
< li class = "chapter " data-level = "7.5" data-path = "../develop/testing.html" >
< a href = "../develop/testing.html" >
< b > 7.5.< / b >
单元测试和集成测试
< / a >
< / li >
< li class = "chapter " data-level = "7.6" data-path = "../develop/client-go-sample.html" >
< a href = "../develop/client-go-sample.html" >
< b > 7.6.< / b >
client-go示例
< / a >
< / li >
< li class = "chapter " data-level = "7.7" data-path = "../develop/operator.html" >
< a href = "../develop/operator.html" >
< b > 7.7.< / b >
Operator
< / a >
< / li >
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< li class = "chapter " data-level = "7.8" data-path = "../develop/advance-developer.html" >
2018-02-05 22:14:09 +08:00
2018-02-11 10:00:15 +08:00
< a href = "../develop/advance-developer.html" >
2018-02-05 22:14:09 +08:00
< b > 7.8.< / b >
2018-02-11 10:00:15 +08:00
高级开发指南
< / a >
< / li >
< li class = "chapter " data-level = "7.9" data-path = "../develop/contribute.html" >
< a href = "../develop/contribute.html" >
< b > 7.9.< / b >
2018-02-05 22:14:09 +08:00
社区贡献
< / a >
< / li >
2018-02-11 10:00:15 +08:00
< li class = "chapter " data-level = "7.10" data-path = "../develop/minikube.html" >
2018-02-05 22:14:09 +08:00
< a href = "../develop/minikube.html" >
2018-02-11 10:00:15 +08:00
< b > 7.10.< / b >
2018-02-05 22:14:09 +08:00
Minikube
< / a >
< / li >
< li class = "header" > 附录< / li >
< li class = "chapter " data-level = "8.1" data-path = "../appendix/" >
< a href = "../appendix/" >
< b > 8.1.< / b >
附录说明
< / a >
< / li >
< li class = "chapter " data-level = "8.2" data-path = "../appendix/debug-kubernetes-services.html" >
< a href = "../appendix/debug-kubernetes-services.html" >
< b > 8.2.< / b >
Kubernetes中的应用故障排查
< / a >
< / li >
< li class = "chapter " data-level = "8.3" data-path = "../appendix/material-share.html" >
< a href = "../appendix/material-share.html" >
< b > 8.3.< / b >
Kubernetes相关资讯和情报链接
< / a >
< / li >
< li class = "chapter " data-level = "8.4" data-path = "../appendix/docker-best-practice.html" >
< a href = "../appendix/docker-best-practice.html" >
< b > 8.4.< / b >
Docker最佳实践
< / a >
< / li >
< li class = "chapter " data-level = "8.5" data-path = "../appendix/tricks.html" >
< a href = "../appendix/tricks.html" >
< b > 8.5.< / b >
使用技巧
< / a >
< / li >
< li class = "chapter " data-level = "8.6" data-path = "../appendix/issues.html" >
< a href = "../appendix/issues.html" >
< b > 8.6.< / b >
问题记录
< / a >
< / li >
< li class = "chapter " data-level = "8.7" data-path = "../appendix/kubernetes-changelog.html" >
< a href = "../appendix/kubernetes-changelog.html" >
< b > 8.7.< / b >
Kubernetes版本更新日志
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "8.7.1" data-path = "../appendix/kubernetes-1.7-changelog.html" >
< a href = "../appendix/kubernetes-1.7-changelog.html" >
< b > 8.7.1.< / b >
Kubernetes1.7更新日志
< / a >
< / li >
< li class = "chapter " data-level = "8.7.2" data-path = "../appendix/kubernetes-1.8-changelog.html" >
< a href = "../appendix/kubernetes-1.8-changelog.html" >
< b > 8.7.2.< / b >
Kubernetes1.8更新日志
< / a >
< / li >
< li class = "chapter " data-level = "8.7.3" data-path = "../appendix/kubernetes-1.9-changelog.html" >
< a href = "../appendix/kubernetes-1.9-changelog.html" >
< b > 8.7.3.< / b >
Kubernetes1.9更新日志
< / a >
< / li >
< / ul >
< / li >
< li class = "chapter " data-level = "8.8" data-path = "../appendix/summary-and-outlook.html" >
< a href = "../appendix/summary-and-outlook.html" >
< b > 8.8.< / b >
Kubernetes及云原生年度总结及展望
< / a >
< ul class = "articles" >
< li class = "chapter " data-level = "8.8.1" data-path = "../appendix/kubernetes-and-cloud-native-summary-in-2017-and-outlook-for-2018.html" >
< a href = "../appendix/kubernetes-and-cloud-native-summary-in-2017-and-outlook-for-2018.html" >
< b > 8.8.1.< / b >
Kubernetes与云原生2017年年终总结及2018年展望
< / a >
< / li >
< / ul >
< / li >
< li class = "divider" > < / li >
< li >
< a href = "https://www.gitbook.com" target = "blank" class = "gitbook-link" >
本书使用 GitBook 发布
< / a >
< / li >
< / ul >
< / nav >
< / div >
< div class = "book-body" >
< div class = "body-inner" >
< div class = "book-header" role = "navigation" >
<!-- Title -->
< h1 >
< i class = "fa fa-circle-o-notch fa-spin" > < / i >
< a href = ".." > Kubernetes中的网络解析——以flannel为例< / a >
< / h1 >
< / div >
< div class = "page-wrapper" tabindex = "-1" role = "main" >
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< h3 id = "kubernetes中的网络解析——以flannel为例" > Kubernetes中 的 网 络 解 析 — — 以 flannel为 例 < / h3 >
< p > 我 们 当 初 使 用 < a href = "https://github.com/rootsongjc/kubernetes-vagrant-centos-cluster" target = "_blank" > kubernetes-vagrant-centos-cluster< / a > 安 装 了 拥 有 三 个 节 点 的 kubernetes集 群 ， 节 点 的 状 态 如 下 所 述 。 < / p >
2018-02-20 18:00:08 +08:00
< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # kubectl get nodes -o wide< / span >
2018-02-05 22:14:09 +08:00
NAME STATUS ROLES AGE VERSION EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
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node1 Ready < span class = "token operator" > < < / span > none< span class = "token operator" > > < / span > 2d v1.9.1 < span class = "token operator" > < < / span > none< span class = "token operator" > > < / span > CentOS Linux 7 < span class = "token punctuation" > (< / span > Core< span class = "token punctuation" > )< / span > 3.10.0-693.11.6.el7.x86_64 docker://1.12.6
node2 Ready < span class = "token operator" > < < / span > none< span class = "token operator" > > < / span > 2d v1.9.1 < span class = "token operator" > < < / span > none< span class = "token operator" > > < / span > CentOS Linux 7 < span class = "token punctuation" > (< / span > Core< span class = "token punctuation" > )< / span > 3.10.0-693.11.6.el7.x86_64 docker://1.12.6
node3 Ready < span class = "token operator" > < < / span > none< span class = "token operator" > > < / span > 2d v1.9.1 < span class = "token operator" > < < / span > none< span class = "token operator" > > < / span > CentOS Linux 7 < span class = "token punctuation" > (< / span > Core< span class = "token punctuation" > )< / span > 3.10.0-693.11.6.el7.x86_64 docker://1.12.6
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< / code > < / pre >
< p > 当 前 Kubernetes集 群 中 运 行 的 所 有 Pod信 息 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # kubectl get pods --all-namespaces -o wide< / span >
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NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE
kube-system coredns-5984fb8cbb-sjqv9 1/1 Running 0 1h 172.33.68.2 node1
kube-system coredns-5984fb8cbb-tkfrc 1/1 Running 1 1h 172.33.96.3 node3
kube-system heapster-v1.5.0-684c7f9488-z6sdz 4/4 Running 0 1h 172.33.31.3 node2
kube-system kubernetes-dashboard-6b66b8b96c-mnm2c 1/1 Running 0 1h 172.33.31.2 node2
2018-02-20 18:00:08 +08:00
kube-system monitoring-influxdb-grafana-v4-54b7854697-tw9cd 2/2 Running 2 1h 172.33.96.2 node3
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< / code > < / pre >
< p > 当 前 etcd中 的 注 册 的 宿 主 机 的 pod地 址 网 段 信 息 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # etcdctl ls /kube-centos/network/subnets< / span >
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/kube-centos/network/subnets/172.33.68.0-24
/kube-centos/network/subnets/172.33.31.0-24
/kube-centos/network/subnets/172.33.96.0-24
< / code > < / pre >
< p > 而 每 个 node上 的 Pod子 网 是 根 据 我 们 在 安 装 flannel时 配 置 来 划 分 的 ， 在 etcd中 查 看 该 配 置 ： < / p >
2018-02-20 18:00:08 +08:00
< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # etcdctl get /kube-centos/network/config< / span >
< span class = "token punctuation" > {< / span > < span class = "token string" > " Network" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 172.33.0.0/16" < / span > ,< span class = "token string" > " SubnetLen" < / span > :24,< span class = "token string" > " Backend" < / span > :< span class = "token punctuation" > {< / span > < span class = "token string" > " Type" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " host-gw" < / span > < span class = "token punctuation" > }< / span > < span class = "token punctuation" > }< / span >
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< / code > < / pre >
< p > 我 们 知 道 Kubernetes集 群 内 部 存 在 三 类 IP， 分 别 是 ： < / p >
< ul >
< li > Node IP： 宿 主 机 的 IP地 址 < / li >
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< li > Pod IP： 使 用 网 络 插 件 创 建 的 IP（ 如 flannel） ， 使 跨 主 机 的 Pod可 以 互 通 < / li >
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< li > Cluster IP： 虚 拟 IP， 通 过 iptables规 则 访 问 服 务 < / li >
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< / ul >
< p > 在 安 装 node节 点 的 时 候 ， 节 点 上 的 进 程 是 按 照 flannel -> docker -> kubelet -> kube-proxy的 顺 序 启 动 的 ， 我 们 下 面 也 会 按 照 该 顺 序 来 讲 解 ， flannel的 网 络 划 分 和 如 何 与 docker交 互 ， 如 何 通 过 iptables访 问 service。 < / p >
< h3 id = "flannel" > Flannel< / h3 >
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< p > Flannel是 作 为 一 个 二 进 制 文 件 的 方 式 部 署 在 每 个 node上 ， 主 要 实 现 两 个 功 能 ： < / p >
< ul >
< li > 为 每 个 node分 配 subnet， 容 器 将 自 动 从 该 子 网 中 获 取 IP地 址 < / li >
< li > 当 有 node加 入 到 网 络 中 时 ， 为 每 个 node增 加 路 由 配 置 < / li >
< / ul >
< p > 下 面 是 使 用 < code > host-gw< / code > backend的 flannel网 络 架 构 图 ： < / p >
2018-03-12 17:48:23 +08:00
< figure id = "fig3.2.1.1" > < img src = "../images/flannel-networking.png" alt = "flannel网络架构（图片来自openshift）" > < figcaption > 图 片 - flannel网 络 架 构 （ 图 片 来 自 openshift） < / figcaption > < / figure >
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< p > < strong > 注 意 < / strong > ： 以 上 IP非 本 示 例 中 的 IP， 但 是 不 影 响 读 者 理 解 。 < / p >
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< p > Node1上 的 flannel配 置 如 下 :< / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # cat /usr/lib/systemd/system/flanneld.service< / span >
< span class = "token punctuation" > [< / span > Unit< span class = "token punctuation" > ]< / span >
Description< span class = "token operator" > =< / span > Flanneld overlay address etcd agent
After< span class = "token operator" > =< / span > network.target
After< span class = "token operator" > =< / span > network-online.target
Wants< span class = "token operator" > =< / span > network-online.target
After< span class = "token operator" > =< / span > etcd.service
Before< span class = "token operator" > =< / span > docker.service
< span class = "token punctuation" > [< / span > Service< span class = "token punctuation" > ]< / span >
Type< span class = "token operator" > =< / span > notify
EnvironmentFile< span class = "token operator" > =< / span > /etc/sysconfig/flanneld
EnvironmentFile< span class = "token operator" > =< / span > -/etc/sysconfig/docker-network
ExecStart< span class = "token operator" > =< / span > /usr/bin/flanneld-start < span class = "token variable" > $FLANNEL_OPTIONS< / span >
ExecStartPost< span class = "token operator" > =< / span > /usr/libexec/flannel/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/docker
Restart< span class = "token operator" > =< / span > on-failure
< span class = "token punctuation" > [< / span > Install< span class = "token punctuation" > ]< / span >
WantedBy< span class = "token operator" > =< / span > multi-user.target
RequiredBy< span class = "token operator" > =< / span > docker.service
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< / code > < / pre >
< p > 其 中 有 两 个 环 境 变 量 文 件 的 配 置 如 下 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # cat /etc/sysconfig/flanneld< / span >
< span class = "token comment" spellcheck = "true" > # Flanneld configuration options< / span >
FLANNEL_ETCD_ENDPOINTS< span class = "token operator" > =< / span > < span class = "token string" > " http://172.17.8.101:2379" < / span >
FLANNEL_ETCD_PREFIX< span class = "token operator" > =< / span > < span class = "token string" > " /kube-centos/network" < / span >
FLANNEL_OPTIONS< span class = "token operator" > =< / span > < span class = "token string" > " -iface=eth2" < / span >
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< / code > < / pre >
< p > 上 面 的 配 置 文 件 仅 供 flanneld使 用 。 < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # cat /etc/sysconfig/docker-network< / span >
< span class = "token comment" spellcheck = "true" > # /etc/sysconfig/docker-network< / span >
DOCKER_NETWORK_OPTIONS< span class = "token operator" > =< / span >
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< / code > < / pre >
< p > 还 有 一 个 < code > ExecStartPost=/usr/libexec/flannel/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/docker< / code > ， 其 中 的 < code > /usr/libexec/flannel/mk-docker-opts.sh< / code > 脚 本 是 在 flanneld启 动 后 运 行 ， 将 会 生 成 两 个 环 境 变 量 配 置 文 件 ： < / p >
< ul >
< li > /run/flannel/docker< / li >
< li > /run/flannel/subnet.env< / li >
< / ul >
< p > 我 们 再 来 看 下 < code > /run/flannel/docker< / code > 的 配 置 。 < / p >
2018-02-20 18:00:08 +08:00
< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # cat /run/flannel/docker< / span >
DOCKER_OPT_BIP< span class = "token operator" > =< / span > < span class = "token string" > " --bip=172.33.68.1/24" < / span >
DOCKER_OPT_IPMASQ< span class = "token operator" > =< / span > < span class = "token string" > " --ip-masq=true" < / span >
DOCKER_OPT_MTU< span class = "token operator" > =< / span > < span class = "token string" > " --mtu=1500" < / span >
DOCKER_NETWORK_OPTIONS< span class = "token operator" > =< / span > < span class = "token string" > " --bip=172.33.68.1/24 --ip-masq=true --mtu=1500" < / span >
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< / code > < / pre >
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< p > 如 果 你 使 用 < code > systemctl< / code > 命 令 先 启 动 flannel后 启 动 docker的 话 ， docker将 会 读 取 以 上 环 境 变 量 。 < / p >
2018-02-05 22:14:09 +08:00
< p > 我 们 再 来 看 下 < code > /run/flannel/subnet.env< / code > 的 配 置 。 < / p >
2018-02-20 18:00:08 +08:00
< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # cat /run/flannel/subnet.env< / span >
FLANNEL_NETWORK< span class = "token operator" > =< / span > 172.33.0.0/16
FLANNEL_SUBNET< span class = "token operator" > =< / span > 172.33.68.1/24
FLANNEL_MTU< span class = "token operator" > =< / span > 1500
FLANNEL_IPMASQ< span class = "token operator" > =< / span > false
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< / code > < / pre >
< p > 以 上 环 境 变 量 是 flannel向 etcd中 注 册 的 。 < / p >
< h3 id = "docker" > Docker< / h3 >
< p > Node1的 docker配 置 如 下 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # cat /usr/lib/systemd/system/docker.service< / span >
< span class = "token punctuation" > [< / span > Unit< span class = "token punctuation" > ]< / span >
Description< span class = "token operator" > =< / span > Docker Application Container Engine
Documentation< span class = "token operator" > =< / span > http://docs.docker.com
After< span class = "token operator" > =< / span > network.target rhel-push-plugin.socket registries.service
Wants< span class = "token operator" > =< / span > docker-storage-setup.service
Requires< span class = "token operator" > =< / span > docker-cleanup.timer
< span class = "token punctuation" > [< / span > Service< span class = "token punctuation" > ]< / span >
Type< span class = "token operator" > =< / span > notify
NotifyAccess< span class = "token operator" > =< / span > all
EnvironmentFile< span class = "token operator" > =< / span > -/run/containers/registries.conf
EnvironmentFile< span class = "token operator" > =< / span > -/etc/sysconfig/docker
EnvironmentFile< span class = "token operator" > =< / span > -/etc/sysconfig/docker-storage
EnvironmentFile< span class = "token operator" > =< / span > -/etc/sysconfig/docker-network
Environment< span class = "token operator" > =< / span > GOTRACEBACK< span class = "token operator" > =< / span > crash
Environment< span class = "token operator" > =< / span > DOCKER_HTTP_HOST_COMPAT< span class = "token operator" > =< / span > 1
Environment< span class = "token operator" > =< / span > PATH< span class = "token operator" > =< / span > /usr/libexec/docker:/usr/bin:/usr/sbin
ExecStart< span class = "token operator" > =< / span > /usr/bin/dockerd-current \
--add-runtime docker-runc< span class = "token operator" > =< / span > /usr/libexec/docker/docker-runc-current \
--default-runtime< span class = "token operator" > =< / span > docker-runc \
--exec-opt native.cgroupdriver< span class = "token operator" > =< / span > systemd \
--userland-proxy-path< span class = "token operator" > =< / span > /usr/libexec/docker/docker-proxy-current \
< span class = "token variable" > $OPTIONS< / span > \
< span class = "token variable" > $DOCKER_STORAGE_OPTIONS< / span > \
< span class = "token variable" > $DOCKER_NETWORK_OPTIONS< / span > \
< span class = "token variable" > $ADD_REGISTRY< / span > \
< span class = "token variable" > $BLOCK_REGISTRY< / span > \
< span class = "token variable" > $INSECURE_REGISTRY< / span > \
< span class = "token variable" > $REGISTRIES< / span >
ExecReload< span class = "token operator" > =< / span > /bin/kill -s HUP < span class = "token variable" > $MAINPID< / span >
LimitNOFILE< span class = "token operator" > =< / span > 1048576
LimitNPROC< span class = "token operator" > =< / span > 1048576
LimitCORE< span class = "token operator" > =< / span > infinity
TimeoutStartSec< span class = "token operator" > =< / span > 0
Restart< span class = "token operator" > =< / span > on-abnormal
MountFlags< span class = "token operator" > =< / span > slave
KillMode< span class = "token operator" > =< / span > process
< span class = "token punctuation" > [< / span > Install< span class = "token punctuation" > ]< / span >
WantedBy< span class = "token operator" > =< / span > multi-user.target
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< / code > < / pre >
< p > 查 看 Node1上 的 docker启 动 参 数 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # systemctl status -l docker< / span >
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● docker.service - Docker Application Container Engine
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Loaded: loaded < span class = "token punctuation" > (< / span > /usr/lib/systemd/system/docker.service< span class = "token punctuation" > ;< / span > enabled< span class = "token punctuation" > ;< / span > vendor preset: disabled< span class = "token punctuation" > )< / span >
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Drop-In: /usr/lib/systemd/system/docker.service.d
└ ─ flannel.conf
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Active: active < span class = "token punctuation" > (< / span > running< span class = "token punctuation" > )< / span > since Fri 2018-02-02 22:52:43 CST< span class = "token punctuation" > ;< / span > 2h 28min ago
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Docs: http://docs.docker.com
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Main PID: 4334 < span class = "token punctuation" > (< / span > dockerd-current< span class = "token punctuation" > )< / span >
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CGroup: /system.slice/docker.service
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‣ 4334 /usr/bin/dockerd-current --add-runtime docker-runc< span class = "token operator" > =< / span > /usr/libexec/docker/docker-runc-current --default-runtime< span class = "token operator" > =< / span > docker-runc --exec-opt native.cgroupdriver< span class = "token operator" > =< / span > systemd --userland-proxy-path< span class = "token operator" > =< / span > /usr/libexec/docker/docker-proxy-current --selinux-enabled --log-driver< span class = "token operator" > =< / span > journald --signature-verification< span class = "token operator" > =< / span > false --bip< span class = "token operator" > =< / span > 172.33.68.1/24 --ip-masq< span class = "token operator" > =< / span > true --mtu< span class = "token operator" > =< / span > 1500
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< / code > < / pre >
< p > 我 们 可 以 看 到 在 docker在 启 动 时 有 如 下 参 数 ： < code > --bip=172.33.68.1/24 --ip-masq=true --mtu=1500< / code > 。 上 述 参 数 flannel启 动 时 运 行 的 脚 本 生 成 的 ， 通 过 环 境 变 量 传 递 过 来 的 。 < / p >
< p > 我 们 查 看 下 node1宿 主 机 上 的 网 络 接 口 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # ip addr< / span >
1: lo: < span class = "token operator" > < < / span > LOOPBACK,UP,LOWER_UP< span class = "token operator" > > < / span > mtu 65536 qdisc noqueue state UNKNOWN qlen 1
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link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
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2: eth0: < span class = "token operator" > < < / span > BROADCAST,MULTICAST,UP,LOWER_UP< span class = "token operator" > > < / span > mtu 1500 qdisc pfifo_fast state UP qlen 1000
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link/ether 52:54:00:00:57:32 brd ff:ff:ff:ff:ff:ff
inet 10.0.2.15/24 brd 10.0.2.255 scope global dynamic eth0
valid_lft 85095sec preferred_lft 85095sec
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inet6 fe80::5054:ff:fe00:5732/64 scope < span class = "token function" > link< / span >
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valid_lft forever preferred_lft forever
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3: eth1: < span class = "token operator" > < < / span > BROADCAST,MULTICAST,UP,LOWER_UP< span class = "token operator" > > < / span > mtu 1500 qdisc pfifo_fast state UP qlen 1000
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link/ether 08:00:27:7b:0f:b1 brd ff:ff:ff:ff:ff:ff
inet 172.17.8.101/24 brd 172.17.8.255 scope global eth1
valid_lft forever preferred_lft forever
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4: eth2: < span class = "token operator" > < < / span > BROADCAST,MULTICAST,UP,LOWER_UP< span class = "token operator" > > < / span > mtu 1500 qdisc pfifo_fast state UP qlen 1000
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link/ether 08:00:27:ef:25:06 brd ff:ff:ff:ff:ff:ff
inet 172.30.113.231/21 brd 172.30.119.255 scope global dynamic eth2
valid_lft 85096sec preferred_lft 85096sec
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inet6 fe80::a00:27ff:feef:2506/64 scope < span class = "token function" > link< / span >
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valid_lft forever preferred_lft forever
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5: docker0: < span class = "token operator" > < < / span > BROADCAST,MULTICAST,UP,LOWER_UP< span class = "token operator" > > < / span > mtu 1500 qdisc noqueue state UP
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link/ether 02:42:d0:ae:80:ea brd ff:ff:ff:ff:ff:ff
inet 172.33.68.1/24 scope global docker0
valid_lft forever preferred_lft forever
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inet6 fe80::42:d0ff:feae:80ea/64 scope < span class = "token function" > link< / span >
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valid_lft forever preferred_lft forever
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7: veth295bef2@if6: < span class = "token operator" > < < / span > BROADCAST,MULTICAST,UP,LOWER_UP< span class = "token operator" > > < / span > mtu 1500 qdisc noqueue master docker0 state UP
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link/ether 6a:72:d7:9f:29:19 brd ff:ff:ff:ff:ff:ff link-netnsid 0
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inet6 fe80::6872:d7ff:fe9f:2919/64 scope < span class = "token function" > link< / span >
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valid_lft forever preferred_lft forever
< / code > < / pre >
< p > 我 们 分 类 来 解 释 下 该 虚 拟 机 中 的 网 络 接 口 。 < / p >
< ul >
< li > lo： 回 环 网 络 ， 127.0.0.1< / li >
< li > eth0： NAT网 络 ， 虚 拟 机 创 建 时 自 动 分 配 ， 仅 可 以 在 几 台 虚 拟 机 之 间 访 问 < / li >
< li > eth1： bridge网 络 ， 使 用 vagrant分 配 给 虚 拟 机 的 地 址 ， 虚 拟 机 之 间 和 本 地 电 脑 都 可 以 访 问 < / li >
< li > eth2： bridge网 络 ， 使 用 DHCP分 配 ， 用 于 访 问 互 联 网 的 网 卡 < / li >
< li > docker0： bridge网 络 ， docker默 认 使 用 的 网 卡 ， 作 为 该 节 点 上 所 有 容 器 的 虚 拟 交 换 机 < / li >
< li > veth295bef2@if6： veth pair， 连 接 docker0和 Pod中 的 容 器 。 veth pair可 以 理 解 为 使 用 网 线 连 接 好 的 两 个 接 口 ， 把 两 个 端 口 放 到 两 个 namespace中 ， 那 么 这 两 个 namespace就 能 打 通 。 参 考 < a href = "http://cizixs.com/2017/02/10/network-virtualization-network-namespace" target = "_blank" > linux 网 络 虚 拟 化 ： network namespace 简 介 < / a > 。 < / li >
< / ul >
< p > 我 们 再 看 下 该 节 点 的 docker上 有 哪 些 网 络 。 < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # docker network ls< / span >
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NETWORK ID NAME DRIVER SCOPE
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940bb75e653b bridge bridge local
d94c046e105d host host local
2db7597fd546 none null local
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< / code > < / pre >
< p > 再 检 查 下 bridge网 络 < code > 940bb75e653b< / code > 的 信 息 。 < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # docker network inspect 940bb75e653b< / span >
< span class = "token punctuation" > [< / span >
< span class = "token punctuation" > {< / span >
< span class = "token string" > " Name" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " bridge" < / span > ,
< span class = "token string" > " Id" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 940bb75e653bfa10dab4cce8813c2b3ce17501e4e4935f7dc13805a61b732d2c" < / span > ,
< span class = "token string" > " Scope" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " local" < / span > ,
< span class = "token string" > " Driver" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " bridge" < / span > ,
< span class = "token string" > " EnableIPv6" < / span > < span class = "token keyword" > :< / span > false,
< span class = "token string" > " IPAM" < / span > < span class = "token keyword" > :< / span > < span class = "token punctuation" > {< / span >
< span class = "token string" > " Driver" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " default" < / span > ,
< span class = "token string" > " Options" < / span > < span class = "token keyword" > :< / span > null,
< span class = "token string" > " Config" < / span > < span class = "token keyword" > :< / span > < span class = "token punctuation" > [< / span >
< span class = "token punctuation" > {< / span >
< span class = "token string" > " Subnet" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 172.33.68.1/24" < / span > ,
< span class = "token string" > " Gateway" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 172.33.68.1" < / span >
< span class = "token punctuation" > }< / span >
< span class = "token punctuation" > ]< / span >
< span class = "token punctuation" > }< / span > ,
< span class = "token string" > " Internal" < / span > < span class = "token keyword" > :< / span > false,
< span class = "token string" > " Containers" < / span > < span class = "token keyword" > :< / span > < span class = "token punctuation" > {< / span >
< span class = "token string" > " 944d4aa660e30e1be9a18d30c9dcfa3b0504d1e5dbd00f3004b76582f1c9a85b" < / span > < span class = "token keyword" > :< / span > < span class = "token punctuation" > {< / span >
< span class = "token string" > " Name" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " k8s_POD_coredns-5984fb8cbb-sjqv9_kube-system_c5a2e959-082a-11e8-b4cd-525400005732_0" < / span > ,
< span class = "token string" > " EndpointID" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 7397d7282e464fc4ec5756d6b328df889cdf46134dbbe3753517e175d3844a85" < / span > ,
< span class = "token string" > " MacAddress" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 02:42:ac:21:44:02" < / span > ,
< span class = "token string" > " IPv4Address" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 172.33.68.2/24" < / span > ,
< span class = "token string" > " IPv6Address" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " " < / span >
< span class = "token punctuation" > }< / span >
< span class = "token punctuation" > }< / span > ,
< span class = "token string" > " Options" < / span > < span class = "token keyword" > :< / span > < span class = "token punctuation" > {< / span >
< span class = "token string" > " com.docker.network.bridge.default_bridge" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " true" < / span > ,
< span class = "token string" > " com.docker.network.bridge.enable_icc" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " true" < / span > ,
< span class = "token string" > " com.docker.network.bridge.enable_ip_masquerade" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " true" < / span > ,
< span class = "token string" > " com.docker.network.bridge.host_binding_ipv4" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 0.0.0.0" < / span > ,
< span class = "token string" > " com.docker.network.bridge.name" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " docker0" < / span > ,
< span class = "token string" > " com.docker.network.driver.mtu" < / span > < span class = "token keyword" > :< / span > < span class = "token string" > " 1500" < / span >
< span class = "token punctuation" > }< / span > ,
< span class = "token string" > " Labels" < / span > < span class = "token keyword" > :< / span > < span class = "token punctuation" > {< / span > < span class = "token punctuation" > }< / span >
< span class = "token punctuation" > }< / span >
< span class = "token punctuation" > ]< / span >
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< / code > < / pre >
< p > 我 们 可 以 看 到 该 网 络 中 的 < code > Config< / code > 与 docker的 启 动 配 置 相 符 。 < / p >
< p > Node1上 运 行 的 容 器 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # docker ps< / span >
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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a37407a234dd docker.io/coredns/coredns@sha256:adf2e5b4504ef9ffa43f16010bd064273338759e92f6f616dd159115748799bc < span class = "token string" > " /coredns -conf /etc/" < / span > About an hour ago Up About an hour k8s_coredns_coredns-5984fb8cbb-sjqv9_kube-system_c5a2e959-082a-11e8-b4cd-525400005732_0
944d4aa660e3 docker.io/openshift/origin-pod < span class = "token string" > " /usr/bin/pod" < / span > About an hour ago Up About an hour k8s_POD_coredns-5984fb8cbb-sjqv9_kube-system_c5a2e959-082a-11e8-b4cd-525400005732_0
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< / code > < / pre >
< p > 我 们 可 以 看 到 当 前 已 经 有 2个 容 器 在 运 行 。 < / p >
< p > Node1上 的 路 由 信 息 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # route -n< / span >
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Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.2.2 0.0.0.0 UG 100 0 0 eth0
0.0.0.0 172.30.116.1 0.0.0.0 UG 101 0 0 eth2
10.0.2.0 0.0.0.0 255.255.255.0 U 100 0 0 eth0
172.17.8.0 0.0.0.0 255.255.255.0 U 100 0 0 eth1
172.30.112.0 0.0.0.0 255.255.248.0 U 100 0 0 eth2
172.33.68.0 0.0.0.0 255.255.255.0 U 0 0 0 docker0
172.33.96.0 172.30.118.65 255.255.255.0 UG 0 0 0 eth2
< / code > < / pre >
< p > 以 上 路 由 信 息 是 由 flannel添 加 的 ， 当 有 新 的 节 点 加 入 到 Kubernetes集 群 中 后 ， 每 个 节 点 上 的 路 由 表 都 将 增 加 。 < / p >
< p > 我 们 在 node上 来 < code > traceroute< / code > 下 node3上 的 < code > coredns-5984fb8cbb-tkfrc< / code > 容 器 ， 其 IP地 址 是 < code > 172.33.96.3< / code > ， 看 看 其 路 由 信 息 。 < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # traceroute 172.33.96.3< / span >
< span class = "token function" > traceroute< / span > to 172.33.96.3 < span class = "token punctuation" > (< / span > 172.33.96.3< span class = "token punctuation" > )< / span > , 30 hops max, 60 byte packets
1 172.30.118.65 < span class = "token punctuation" > (< / span > 172.30.118.65< span class = "token punctuation" > )< / span > 0.518 ms 0.367 ms 0.398 ms
2 172.33.96.3 < span class = "token punctuation" > (< / span > 172.33.96.3< span class = "token punctuation" > )< / span > 0.451 ms 0.352 ms 0.223 ms
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< / code > < / pre >
< p > 我 们 看 到 路 由 直 接 经 过 node3的 公 网 IP后 就 到 达 了 node3节 点 上 的 Pod。 < / p >
< p > Node1的 iptables信 息 ： < / p >
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< pre class = "language-" > < code class = "lang-bash" > < span class = "token punctuation" > [< / span > root@node1 ~< span class = "token punctuation" > ]< / span > < span class = "token comment" spellcheck = "true" > # iptables -L< / span >
Chain INPUT < span class = "token punctuation" > (< / span > policy ACCEPT< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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KUBE-FIREWALL all -- anywhere anywhere
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KUBE-SERVICES all -- anywhere anywhere /* kubernetes < span class = "token function" > service< / span > portals */
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Chain FORWARD < span class = "token punctuation" > (< / span > policy ACCEPT< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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KUBE-FORWARD all -- anywhere anywhere /* kubernetes forward rules */
DOCKER-ISOLATION all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
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Chain OUTPUT < span class = "token punctuation" > (< / span > policy ACCEPT< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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KUBE-FIREWALL all -- anywhere anywhere
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KUBE-SERVICES all -- anywhere anywhere /* kubernetes < span class = "token function" > service< / span > portals */
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Chain DOCKER < span class = "token punctuation" > (< / span > 1 references< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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Chain DOCKER-ISOLATION < span class = "token punctuation" > (< / span > 1 references< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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RETURN all -- anywhere anywhere
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Chain KUBE-FIREWALL < span class = "token punctuation" > (< / span > 2 references< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
DROP all -- anywhere anywhere /* kubernetes firewall < span class = "token keyword" > for< / span > dropping marked packets */ mark match 0x8000/0x8000
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Chain KUBE-FORWARD < span class = "token punctuation" > (< / span > 1 references< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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ACCEPT all -- anywhere anywhere /* kubernetes forwarding rules */ mark match 0x4000/0x4000
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ACCEPT all -- 10.254.0.0/16 anywhere /* kubernetes forwarding conntrack pod < span class = "token function" > source< / span > rule */ ctstate RELATED,ESTABLISHED
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ACCEPT all -- anywhere 10.254.0.0/16 /* kubernetes forwarding conntrack pod destination rule */ ctstate RELATED,ESTABLISHED
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Chain KUBE-SERVICES < span class = "token punctuation" > (< / span > 2 references< span class = "token punctuation" > )< / span >
target prot opt < span class = "token function" > source< / span > destination
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< / code > < / pre >
< p > 从 上 面 的 iptables中 可 以 看 到 注 入 了 很 多 Kuberentes service的 规 则 ， 请 参 考 < a href = "https://www.cnyunwei.cc/archives/393" target = "_blank" > iptables 规 则 < / a > 获 取 更 多 详 细 信 息 。 < / p >
< h2 id = "参考" > 参 考 < / h2 >
< ul >
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< li > < a href = "https://github.com/coreos/flannel" target = "_blank" > coreos/flannel - github.com< / a > < / li >
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< li > < a href = "http://cizixs.com/2017/02/10/network-virtualization-network-namespace" target = "_blank" > linux 网 络 虚 拟 化 ： network namespace 简 介 < / a > < / li >
< li > < a href = "https://segmentfault.com/a/1190000009251098" target = "_blank" > Linux虚 拟 网 络 设 备 之 veth< / a > < / li >
< li > < a href = "https://www.cnyunwei.cc/archives/393" target = "_blank" > iptables 规 则 < / a > < / li >
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< li > < a href = "http://hustcat.github.io/flannel-host-gw-network/" target = "_blank" > flannel host-gw network< / a > < / li >
2018-02-15 11:03:50 +08:00
< li > < a href = "https://docs.openshift.com/container-platform/3.4/architecture/additional_concepts/flannel.html" target = "_blank" > flannel - openshift.com< / a > < / li >
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< / ul >
2018-02-06 14:16:27 +08:00
< footer class = "page-footer" > < span class = "copyright" > Copyright © jimmysong.io 2017-2018 all right reserved， powered by Gitbook< / span > < span class = "footer-modification" > Updated at
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< script src = "../gitbook/gitbook-plugin-github-buttons/plugin.js" > < / script >
< script src = "../gitbook/gitbook-plugin-3-ba/plugin.js" > < / script >
< script src = "../gitbook/gitbook-plugin-sharing/buttons.js" > < / script >
< script src = "../gitbook/gitbook-plugin-fontsettings/fontsettings.js" > < / script >
< / body >
< / html >
