2017-08-21 17:44:43 +08:00
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<title>4.2.1 安装Traefik ingress · Kubernetes Handbook</title>
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<meta name="author" content="Jimmy Song">
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<a href="../">
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1. 前言
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</a>
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<a href="../concepts/">
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2. 概念原理
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.2.1" data-path="../concepts/concepts.html">
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<a href="../concepts/concepts.html">
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2.1 设计理念
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</a>
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<a href="../concepts/objects.html">
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2.2 主要概念
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.2.2.1" data-path="../concepts/pod-overview.html">
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<a href="../concepts/pod-overview.html">
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2.2.1 Pod
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.2.2.1.1" data-path="../concepts/pod.html">
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<a href="../concepts/pod.html">
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2.2.1.1 Pod解析
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</a>
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2017-08-31 23:28:33 +08:00
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</li>
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<li class="chapter " data-level="1.2.2.1.2" data-path="../concepts/init-containers.html">
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<a href="../concepts/init-containers.html">
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2.2.1.2 Init容器
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</a>
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2017-08-21 17:44:43 +08:00
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.2.2.2" data-path="../concepts/node.html">
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<a href="../concepts/node.html">
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2.2.2 Node
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.3" data-path="../concepts/namespace.html">
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<a href="../concepts/namespace.html">
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2.2.3 Namespace
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.4" data-path="../concepts/service.html">
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<a href="../concepts/service.html">
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2.2.4 Service
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.5" data-path="../concepts/volume.html">
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<a href="../concepts/volume.html">
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2.2.5 Volume和Persistent Volume
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.6" data-path="../concepts/deployment.html">
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<a href="../concepts/deployment.html">
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2.2.6 Deployment
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.7" data-path="../concepts/secret.html">
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<a href="../concepts/secret.html">
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2.2.7 Secret
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.8" data-path="../concepts/statefulset.html">
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<a href="../concepts/statefulset.html">
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2.2.8 StatefulSet
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.9" data-path="../concepts/daemonset.html">
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<a href="../concepts/daemonset.html">
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2.2.9 DaemonSet
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.10" data-path="../concepts/serviceaccount.html">
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<a href="../concepts/serviceaccount.html">
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2.2.10 ServiceAccount
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.11" data-path="../concepts/replicaset.html">
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<a href="../concepts/replicaset.html">
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2.2.11 ReplicationController和ReplicaSet
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.12" data-path="../concepts/job.html">
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<a href="../concepts/job.html">
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2.2.12 Job
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.13" data-path="../concepts/cronjob.html">
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<a href="../concepts/cronjob.html">
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2.2.13 CronJob
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.14" data-path="../concepts/ingress.html">
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<a href="../concepts/ingress.html">
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2.2.14 Ingress
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.15" data-path="../concepts/configmap.html">
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<a href="../concepts/configmap.html">
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2.2.15 ConfigMap
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.16" data-path="../concepts/horizontal-pod-autoscaling.html">
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<a href="../concepts/horizontal-pod-autoscaling.html">
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2.2.16 Horizontal Pod Autoscaling
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.17" data-path="../concepts/label.html">
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<a href="../concepts/label.html">
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2.2.17 Label
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.3" data-path="../guide/">
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<a href="../guide/">
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3. 用户指南
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.1" data-path="../guide/resource-configuration.html">
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<a href="../guide/resource-configuration.html">
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3.1 资源配置
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.1.1" data-path="../guide/configure-liveness-readiness-probes.html">
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<a href="../guide/configure-liveness-readiness-probes.html">
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3.1.1 配置Pod的liveness和readiness探针
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</a>
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</li>
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<li class="chapter " data-level="1.3.1.2" data-path="../guide/configure-pod-service-account.html">
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<a href="../guide/configure-pod-service-account.html">
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3.1.2 配置Pod的Service Account
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.3.2" data-path="../guide/command-usage.html">
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<a href="../guide/command-usage.html">
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3.2 命令使用
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.2.1" data-path="../guide/using-kubectl.html">
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<a href="../guide/using-kubectl.html">
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3.2.1 使用kubectl
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.3.3" data-path="../guide/cluster-management.html">
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<a href="../guide/cluster-management.html">
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3.3 集群管理
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.3.1" data-path="../guide/managing-tls-in-a-cluster.html">
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<a href="../guide/managing-tls-in-a-cluster.html">
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3.3.1 管理集群中的TLS
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</a>
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2017-08-21 18:44:34 +08:00
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</li>
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<li class="chapter " data-level="1.3.3.2" data-path="../guide/kubelet-authentication-authorization.html">
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<a href="../guide/kubelet-authentication-authorization.html">
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3.3.2 kubelet的认证授权
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</a>
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</li>
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<li class="chapter " data-level="1.3.3.3" data-path="../guide/tls-bootstrapping.html">
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<a href="../guide/tls-bootstrapping.html">
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3.3.3 TLS bootstrap
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</a>
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2017-08-31 14:23:44 +08:00
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</li>
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<li class="chapter " data-level="1.3.3.4" data-path="../guide/kubectl-user-authentication-authorization.html">
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<a href="../guide/kubectl-user-authentication-authorization.html">
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3.3.4 kubectl的用户认证授权
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</a>
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</li>
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<li class="chapter " data-level="1.3.3.5" data-path="../guide/rbac.html">
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<a href="../guide/rbac.html">
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3.3.5 RBAC——基于角色的访问控制
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</a>
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2017-08-21 17:44:43 +08:00
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.3.4" data-path="../guide/access-kubernetes-cluster.html">
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<a href="../guide/access-kubernetes-cluster.html">
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3.4 访问 Kubernetes 集群
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.4.1" data-path="../guide/access-cluster.html">
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<a href="../guide/access-cluster.html">
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3.4.1 访问集群
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</a>
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</li>
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<li class="chapter " data-level="1.3.4.2" data-path="../guide/authenticate-across-clusters-kubeconfig.html">
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<a href="../guide/authenticate-across-clusters-kubeconfig.html">
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3.4.2 使用 kubeconfig 文件配置跨集群认证
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</a>
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</li>
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<li class="chapter " data-level="1.3.4.3" data-path="../guide/connecting-to-applications-port-forward.html">
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<a href="../guide/connecting-to-applications-port-forward.html">
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3.4.3 通过端口转发访问集群中的应用程序
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</a>
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</li>
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<li class="chapter " data-level="1.3.4.4" data-path="../guide/service-access-application-cluster.html">
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<a href="../guide/service-access-application-cluster.html">
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3.4.4 使用 service 访问群集中的应用程序
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.3.5" data-path="../guide/application-development-deployment-flow.html">
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<a href="../guide/application-development-deployment-flow.html">
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3.5 在kubernetes中开发部署应用
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.3.5.1" data-path="../guide/deploy-applications-in-kubernetes.html">
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<a href="../guide/deploy-applications-in-kubernetes.html">
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3.5.1 适用于kubernetes的应用开发部署流程
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</a>
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2017-08-21 18:44:34 +08:00
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</li>
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<li class="chapter " data-level="1.3.5.2" data-path="../guide/migrating-hadoop-yarn-to-kubernetes.html">
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<a href="../guide/migrating-hadoop-yarn-to-kubernetes.html">
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3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例
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</a>
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2017-08-21 17:44:43 +08:00
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.4" data-path="./">
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<a href="./">
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4. 最佳实践
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.4.1" data-path="install-kbernetes1.6-on-centos.html">
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<a href="install-kbernetes1.6-on-centos.html">
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4.1 在CentOS上部署kubernetes1.6集群
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.4.1.1" data-path="create-tls-and-secret-key.html">
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<a href="create-tls-and-secret-key.html">
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4.1.1 创建TLS证书和秘钥
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.2" data-path="create-kubeconfig.html">
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<a href="create-kubeconfig.html">
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4.1.2 创建kubeconfig文件
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.3" data-path="etcd-cluster-installation.html">
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<a href="etcd-cluster-installation.html">
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4.1.3 创建高可用etcd集群
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.4" data-path="kubectl-installation.html">
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<a href="kubectl-installation.html">
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4.1.4 安装kubectl命令行工具
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.5" data-path="master-installation.html">
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<a href="master-installation.html">
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4.1.5 部署master节点
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.6" data-path="node-installation.html">
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<a href="node-installation.html">
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4.1.6 部署node节点
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.7" data-path="kubedns-addon-installation.html">
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<a href="kubedns-addon-installation.html">
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4.1.7 安装kubedns插件
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.8" data-path="dashboard-addon-installation.html">
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<a href="dashboard-addon-installation.html">
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4.1.8 安装dashboard插件
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.9" data-path="heapster-addon-installation.html">
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<a href="heapster-addon-installation.html">
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4.1.9 安装heapster插件
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</a>
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</li>
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<li class="chapter " data-level="1.4.1.10" data-path="efk-addon-installation.html">
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<a href="efk-addon-installation.html">
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4.1.10 安装EFK插件
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.4.2" data-path="service-discovery-and-loadbalancing.html">
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<a href="service-discovery-and-loadbalancing.html">
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4.2 服务发现与负载均衡
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</a>
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<ul class="articles">
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<li class="chapter active" data-level="1.4.2.1" data-path="traefik-ingress-installation.html">
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<a href="traefik-ingress-installation.html">
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4.2.1 安装Traefik ingress
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</a>
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</li>
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<li class="chapter " data-level="1.4.2.2" data-path="distributed-load-test.html">
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<a href="distributed-load-test.html">
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4.2.2 分布式负载测试
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</a>
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</li>
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<li class="chapter " data-level="1.4.2.3" data-path="network-and-cluster-perfermance-test.html">
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<a href="network-and-cluster-perfermance-test.html">
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4.2.3 网络和集群性能测试
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</a>
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<li class="chapter " data-level="1.4.2.4" data-path="edge-node-configuration.html">
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<a href="edge-node-configuration.html">
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4.2.4 边缘节点配置
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</a>
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<li class="chapter " data-level="1.4.3" data-path="operation.html">
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<a href="operation.html">
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4.3 运维管理
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.4.3.1" data-path="service-rolling-update.html">
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<a href="service-rolling-update.html">
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4.3.1 服务滚动升级
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</a>
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<li class="chapter " data-level="1.4.3.2" data-path="app-log-collection.html">
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<a href="app-log-collection.html">
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4.3.2 应用日志收集
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</a>
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<li class="chapter " data-level="1.4.3.3" data-path="configuration-best-practice.html">
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<a href="configuration-best-practice.html">
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4.3.3 配置最佳实践
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</a>
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</li>
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<li class="chapter " data-level="1.4.3.4" data-path="monitor.html">
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<a href="monitor.html">
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4.3.4 集群及应用监控
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</a>
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<li class="chapter " data-level="1.4.3.5" data-path="jenkins-ci-cd.html">
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<a href="jenkins-ci-cd.html">
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4.3.5 使用Jenkins进行持续构建与发布
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</a>
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<li class="chapter " data-level="1.4.3.6" data-path="data-persistence-problem.html">
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<a href="data-persistence-problem.html">
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4.3.6 数据持久化问题
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.4.4" data-path="storage.html">
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<a href="storage.html">
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4.4 存储管理
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.4.4.1" data-path="glusterfs.html">
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<a href="glusterfs.html">
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4.4.1 GlusterFS
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.4.4.1.1" data-path="using-glusterfs-for-persistent-storage.html">
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<a href="using-glusterfs-for-persistent-storage.html">
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4.4.1.1 使用GlusterFS做持久化存储
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</a>
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<li class="chapter " data-level="1.4.4.1.2" data-path="storage-for-containers-using-glusterfs-with-openshift.html">
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<a href="storage-for-containers-using-glusterfs-with-openshift.html">
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4.4.1.2 在OpenShift中使用GlusterFS做持久化存储
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.5" data-path="../usecases/">
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<a href="../usecases/">
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5. 领域应用
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.5.1" data-path="../usecases/microservices.html">
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<a href="../usecases/microservices.html">
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5.1 微服务架构
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.5.1.1" data-path="../usecases/istio.html">
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<a href="../usecases/istio.html">
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5.1.1 Istio
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.5.1.1.1" data-path="../usecases/istio-installation.html">
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<a href="../usecases/istio-installation.html">
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5.1.1.1 安装istio
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</a>
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</li>
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<li class="chapter " data-level="1.5.1.1.2" data-path="../usecases/configuring-request-routing.html">
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<a href="../usecases/configuring-request-routing.html">
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5.1.1.2 配置请求的路由规则
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.5.1.2" data-path="../usecases/linkerd.html">
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<a href="../usecases/linkerd.html">
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5.1.2 Linkerd
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.5.1.2.1" data-path="../usecases/linkerd-user-guide.html">
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<a href="../usecases/linkerd-user-guide.html">
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5.1.2.1 Linkerd 使用指南
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.5.1.3" data-path="../usecases/service-discovery-in-microservices.html">
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<a href="../usecases/service-discovery-in-microservices.html">
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5.1.3 微服务中的服务发现
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</a>
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</ul>
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</li>
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<li class="chapter " data-level="1.5.2" data-path="../usecases/big-data.html">
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<a href="../usecases/big-data.html">
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5.2 大数据
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</a>
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<ul class="articles">
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|
2017-08-30 14:20:52 +08:00
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|
<li class="chapter " data-level="1.5.2.1" data-path="../usecases/spark-standalone-on-kubernetes.html">
|
2017-08-21 17:44:43 +08:00
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|
2017-08-30 14:20:52 +08:00
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<a href="../usecases/spark-standalone-on-kubernetes.html">
|
2017-08-21 17:44:43 +08:00
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2017-08-30 14:20:52 +08:00
|
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5.2.1 Spark standalone on Kubernetes
|
2017-08-21 17:44:43 +08:00
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</a>
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2017-08-31 14:23:44 +08:00
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</li>
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<li class="chapter " data-level="1.5.2.2" data-path="../usecases/support-spark-natively-in-kubernetes.html">
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<a href="../usecases/support-spark-natively-in-kubernetes.html">
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5.2.2 运行支持kubernetes原生调度的Spark程序
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</a>
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2017-08-21 17:44:43 +08:00
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</li>
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</ul>
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2017-08-30 16:52:33 +08:00
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</li>
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<li class="chapter " data-level="1.5.3" data-path="../usecases/serverless.html">
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<a href="../usecases/serverless.html">
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5.3 Serverless架构
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</a>
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2017-08-21 17:44:43 +08:00
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.6" data-path="../develop/">
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<a href="../develop/">
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6. 开发指南
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.6.1" data-path="../develop/developing-environment.html">
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<a href="../develop/developing-environment.html">
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6.1 开发环境搭建
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</a>
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</li>
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<li class="chapter " data-level="1.6.2" data-path="../develop/testing.html">
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<a href="../develop/testing.html">
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6.2 单元测试和集成测试
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</a>
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</li>
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<li class="chapter " data-level="1.6.3" data-path="../develop/client-go-sample.html">
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<a href="../develop/client-go-sample.html">
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6.3 client-go示例
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</a>
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</li>
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<li class="chapter " data-level="1.6.4" data-path="../develop/contribute.html">
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<a href="../develop/contribute.html">
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6.4 社区贡献
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="1.7" data-path="../appendix/">
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<a href="../appendix/">
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7. 附录
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</a>
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<ul class="articles">
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<li class="chapter " data-level="1.7.1" data-path="../appendix/docker-best-practice.html">
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<a href="../appendix/docker-best-practice.html">
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7.1 Docker最佳实践
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<li class="chapter " data-level="1.7.2" data-path="../appendix/issues.html">
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<a href="../appendix/issues.html">
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7.2 问题记录
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</a>
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</li>
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<li class="chapter " data-level="1.7.3" data-path="../appendix/tricks.html">
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<a href="../appendix/tricks.html">
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7.3 使用技巧
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<li class="divider"></li>
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<li>
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<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
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本書使用 GitBook 釋出
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</a>
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<!-- Title -->
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<h1>
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<i class="fa fa-circle-o-notch fa-spin"></i>
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<a href=".." >4.2.1 安装Traefik ingress</a>
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</h1>
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</div>
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<section class="normal markdown-section">
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<h1 id="安装traefik-ingress">安装traefik ingress</h1>
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<h2 id="ingress简介">Ingress简介</h2>
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<p>如果你还不了解,ingress是什么,可以先看下我翻译的Kubernetes官网上ingress的介绍<a href="http://rootsongjc.github.io/blogs/kubernetes-ingress-resource/" target="_blank">Kubernetes Ingress解析</a>。</p>
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<p><strong>理解Ingress</strong></p>
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<p>简单的说,ingress就是从kubernetes集群外访问集群的入口,将用户的URL请求转发到不同的service上。Ingress相当于nginx、apache等负载均衡方向代理服务器,其中还包括规则定义,即URL的路由信息,路由信息得的刷新由<a href="https://kubernetes.io/docs/concepts/services-networking/ingress/#ingress-controllers" target="_blank">Ingress controller</a>来提供。</p>
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<p><strong>理解Ingress Controller</strong></p>
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<p>Ingress Controller 实质上可以理解为是个监视器,Ingress Controller 通过不断地跟 kubernetes API 打交道,实时的感知后端 service、pod 等变化,比如新增和减少 pod,service 增加与减少等;当得到这些变化信息后,Ingress Controller 再结合下文的 Ingress 生成配置,然后更新反向代理负载均衡器,并刷新其配置,达到服务发现的作用。</p>
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<h2 id="部署traefik">部署Traefik</h2>
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<p><strong>介绍traefik</strong></p>
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<p><a href="https://traefik.io/" target="_blank">Traefik</a>是一款开源的反向代理与负载均衡工具。它最大的优点是能够与常见的微服务系统直接整合,可以实现自动化动态配置。目前支持Docker, Swarm, Mesos/Marathon, Mesos, Kubernetes, Consul, Etcd, Zookeeper, BoltDB, Rest API等等后端模型。</p>
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<p>以下配置文件可以在<a href="https://github.com/rootsongjc/kubernetes-handbook" target="_blank">kubernetes-handbook</a>GitHub仓库中的<a href="../manifests/traefik-ingress">manifests/traefik-ingress/</a>目录下找到。</p>
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<p><strong>创建ingress-rbac.yaml</strong></p>
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<p>将用于service account验证。</p>
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<pre><code class="lang-Yaml"><span class="hljs-attr">apiVersion:</span> v1
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<span class="hljs-attr">kind:</span> ServiceAccount
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<span class="hljs-attr">metadata:</span>
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<span class="hljs-attr"> name:</span> ingress
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<span class="hljs-attr"> namespace:</span> kube-system
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<span class="hljs-meta">---</span>
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<span class="hljs-attr">kind:</span> ClusterRoleBinding
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<span class="hljs-attr">apiVersion:</span> rbac.authorization.k8s.io/v1beta1
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<span class="hljs-attr">metadata:</span>
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<span class="hljs-attr"> name:</span> ingress
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<span class="hljs-attr">subjects:</span>
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<span class="hljs-attr"> - kind:</span> ServiceAccount
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<span class="hljs-attr"> name:</span> ingress
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<span class="hljs-attr"> namespace:</span> kube-system
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<span class="hljs-attr">roleRef:</span>
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<span class="hljs-attr"> kind:</span> ClusterRole
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<span class="hljs-attr"> name:</span> cluster-admin
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<span class="hljs-attr"> apiGroup:</span> rbac.authorization.k8s.io
|
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|
|
</code></pre>
|
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|
|
<p><strong>创建名为<code>traefik-ingress</code>的ingress</strong>,文件名traefik.yaml</p>
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|
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> extensions/v1beta1
|
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<span class="hljs-attr">kind:</span> Ingress
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<span class="hljs-attr">metadata:</span>
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<span class="hljs-attr"> name:</span> traefik-ingress
|
2017-08-21 18:44:34 +08:00
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<span class="hljs-attr"> namespace:</span> default
|
2017-08-21 17:44:43 +08:00
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<span class="hljs-attr">spec:</span>
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<span class="hljs-attr"> rules:</span>
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<span class="hljs-attr"> - host:</span> traefik.nginx.io
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<span class="hljs-attr"> http:</span>
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<span class="hljs-attr"> paths:</span>
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<span class="hljs-attr"> - path:</span> /
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<span class="hljs-attr"> backend:</span>
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<span class="hljs-attr"> serviceName:</span> my-nginx
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<span class="hljs-attr"> servicePort:</span> <span class="hljs-number">80</span>
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<span class="hljs-attr"> - host:</span> traefik.frontend.io
|
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<span class="hljs-attr"> http:</span>
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<span class="hljs-attr"> paths:</span>
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<span class="hljs-attr"> - path:</span> /
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<span class="hljs-attr"> backend:</span>
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<span class="hljs-attr"> serviceName:</span> frontend
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<span class="hljs-attr"> servicePort:</span> <span class="hljs-number">80</span>
|
|
|
|
</code></pre>
|
2017-08-21 18:44:34 +08:00
|
|
|
<p>这其中的<code>backend</code>中要配置default namespace中启动的service名字,如果你没有配置namespace名字,默认使用default namespace,如果你在其他namespace中创建服务想要暴露到kubernetes集群外部,可以创建新的ingress.yaml文件,同时在文件中指定该<code>namespace</code>,其他配置与上面的文件格式相同。。<code>path</code>就是URL地址后的路径,如traefik.frontend.io/path,service将会接受path这个路径,host最好使用service-name.filed1.filed2.domain-name这种类似主机名称的命名方式,方便区分服务。</p>
|
2017-08-21 17:44:43 +08:00
|
|
|
<p>根据你自己环境中部署的service的名字和端口自行修改,有新service增加时,修改该文件后可以使用<code>kubectl replace -f traefik.yaml</code>来更新。</p>
|
|
|
|
<p>我们现在集群中已经有两个service了,一个是nginx,另一个是官方的<code>guestbook</code>例子。</p>
|
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<p><strong>创建Depeloyment</strong></p>
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|
<pre><code class="lang-Yaml"><span class="hljs-attr">apiVersion:</span> extensions/v1beta1
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<span class="hljs-attr">kind:</span> Deployment
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<span class="hljs-attr">metadata:</span>
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<span class="hljs-attr"> name:</span> traefik-ingress-lb
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<span class="hljs-attr"> namespace:</span> kube-system
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<span class="hljs-attr"> labels:</span>
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<span class="hljs-attr"> k8s-app:</span> traefik-ingress-lb
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<span class="hljs-attr">spec:</span>
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<span class="hljs-attr"> template:</span>
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<span class="hljs-attr"> metadata:</span>
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<span class="hljs-attr"> labels:</span>
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<span class="hljs-attr"> k8s-app:</span> traefik-ingress-lb
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<span class="hljs-attr"> name:</span> traefik-ingress-lb
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<span class="hljs-attr"> spec:</span>
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<span class="hljs-attr"> terminationGracePeriodSeconds:</span> <span class="hljs-number">60</span>
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<span class="hljs-attr"> hostNetwork:</span> <span class="hljs-literal">true</span>
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<span class="hljs-attr"> restartPolicy:</span> Always
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<span class="hljs-attr"> serviceAccountName:</span> ingress
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<span class="hljs-attr"> containers:</span>
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<span class="hljs-attr"> - image:</span> traefik
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<span class="hljs-attr"> name:</span> traefik-ingress-lb
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<span class="hljs-attr"> resources:</span>
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<span class="hljs-attr"> limits:</span>
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<span class="hljs-attr"> cpu:</span> <span class="hljs-number">200</span>m
|
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<span class="hljs-attr"> memory:</span> <span class="hljs-number">30</span>Mi
|
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<span class="hljs-attr"> requests:</span>
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<span class="hljs-attr"> cpu:</span> <span class="hljs-number">100</span>m
|
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<span class="hljs-attr"> memory:</span> <span class="hljs-number">20</span>Mi
|
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<span class="hljs-attr"> ports:</span>
|
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<span class="hljs-attr"> - name:</span> http
|
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<span class="hljs-attr"> containerPort:</span> <span class="hljs-number">80</span>
|
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|
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<span class="hljs-attr"> hostPort:</span> <span class="hljs-number">80</span>
|
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|
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<span class="hljs-attr"> - name:</span> admin
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|
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<span class="hljs-attr"> containerPort:</span> <span class="hljs-number">8580</span>
|
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|
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<span class="hljs-attr"> hostPort:</span> <span class="hljs-number">8580</span>
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<span class="hljs-attr"> args:</span>
|
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|
|
<span class="hljs-bullet"> -</span> --web
|
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|
|
<span class="hljs-bullet"> -</span> --web.address=:<span class="hljs-number">8580</span>
|
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|
|
<span class="hljs-bullet"> -</span> --kubernetes
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</code></pre>
|
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|
|
<p>注意我们这里用的是Deploy类型,没有限定该pod运行在哪个主机上。Traefik的端口是8580。</p>
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|
<p><strong>Traefik UI</strong></p>
|
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|
|
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> v1
|
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|
<span class="hljs-attr">kind:</span> Service
|
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|
<span class="hljs-attr">metadata:</span>
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<span class="hljs-attr"> name:</span> traefik-web-ui
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<span class="hljs-attr"> namespace:</span> kube-system
|
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<span class="hljs-attr">spec:</span>
|
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|
|
<span class="hljs-attr"> selector:</span>
|
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|
<span class="hljs-attr"> k8s-app:</span> traefik-ingress-lb
|
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|
|
<span class="hljs-attr"> ports:</span>
|
|
|
|
<span class="hljs-attr"> - name:</span> web
|
|
|
|
<span class="hljs-attr"> port:</span> <span class="hljs-number">80</span>
|
|
|
|
<span class="hljs-attr"> targetPort:</span> <span class="hljs-number">8580</span>
|
|
|
|
<span class="hljs-meta">---</span>
|
|
|
|
<span class="hljs-attr">apiVersion:</span> extensions/v1beta1
|
|
|
|
<span class="hljs-attr">kind:</span> Ingress
|
|
|
|
<span class="hljs-attr">metadata:</span>
|
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|
|
<span class="hljs-attr"> name:</span> traefik-web-ui
|
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|
|
<span class="hljs-attr"> namespace:</span> kube-system
|
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|
|
<span class="hljs-attr">spec:</span>
|
|
|
|
<span class="hljs-attr"> rules:</span>
|
|
|
|
<span class="hljs-attr"> - host:</span> traefik-ui.local
|
|
|
|
<span class="hljs-attr"> http:</span>
|
|
|
|
<span class="hljs-attr"> paths:</span>
|
|
|
|
<span class="hljs-attr"> - path:</span> /
|
|
|
|
<span class="hljs-attr"> backend:</span>
|
|
|
|
<span class="hljs-attr"> serviceName:</span> traefik-web-ui
|
|
|
|
<span class="hljs-attr"> servicePort:</span> web
|
|
|
|
</code></pre>
|
|
|
|
<p>配置完成后就可以启动treafik ingress了。</p>
|
|
|
|
<pre><code>kubectl create -f .
|
|
|
|
</code></pre><p>我查看到traefik的pod在<code>172.20.0.115</code>这台节点上启动了。</p>
|
|
|
|
<p>访问该地址<code>http://172.20.0.115:8580/</code>将可以看到dashboard。</p>
|
|
|
|
<figure id="fig1.4.2.1.1"><img src="../images/traefik-dashboard.jpg" alt="kubernetes-dashboard"><figcaption>Figure: kubernetes-dashboard</figcaption></figure>
|
|
|
|
<p>左侧黄色部分部分列出的是所有的rule,右侧绿色部分是所有的backend。</p>
|
|
|
|
<h2 id="测试">测试</h2>
|
|
|
|
<p>在集群的任意一个节点上执行。假如现在我要访问nginx的"/"路径。</p>
|
|
|
|
<pre><code class="lang-bash">$ curl -H Host:traefik.nginx.io http://172.20.0.115/
|
|
|
|
<!DOCTYPE html>
|
|
|
|
<html>
|
|
|
|
<head>
|
|
|
|
<title>Welcome to nginx!</title>
|
|
|
|
<style>
|
|
|
|
body {
|
|
|
|
width: 35em;
|
|
|
|
margin: 0 auto;
|
|
|
|
font-family: Tahoma, Verdana, Arial, sans-serif;
|
|
|
|
}
|
|
|
|
</style>
|
|
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<h1>Welcome to nginx!</h1>
|
|
|
|
<p>If you see this page, the nginx web server is successfully installed and
|
|
|
|
working. Further configuration is required.</p>
|
|
|
|
|
|
|
|
<p>For online documentation and support please refer to
|
|
|
|
<a href=<span class="hljs-string">"http://nginx.org/"</span>>nginx.org</a>.<br/>
|
|
|
|
Commercial support is available at
|
|
|
|
<a href=<span class="hljs-string">"http://nginx.com/"</span>>nginx.com</a>.</p>
|
|
|
|
|
|
|
|
<p><em>Thank you <span class="hljs-keyword">for</span> using nginx.</em></p>
|
|
|
|
</body>
|
|
|
|
</html>
|
|
|
|
</code></pre>
|
|
|
|
<p>如果你需要在kubernetes集群以外访问就需要设置DNS,或者修改本机的hosts文件。</p>
|
|
|
|
<p>在其中加入:</p>
|
|
|
|
<pre><code>172.20.0.115 traefik.nginx.io
|
|
|
|
172.20.0.115 traefik.frontend.io
|
|
|
|
</code></pre><p>所有访问这些地址的流量都会发送给172.20.0.115这台主机,就是我们启动traefik的主机。</p>
|
|
|
|
<p>Traefik会解析http请求header里的Host参数将流量转发给Ingress配置里的相应service。</p>
|
|
|
|
<p>修改hosts后就就可以在kubernetes集群外访问以上两个service,如下图:</p>
|
|
|
|
<figure id="fig1.4.2.1.2"><img src="../images/traefik-nginx.jpg" alt="traefik-nginx"><figcaption>Figure: traefik-nginx</figcaption></figure>
|
|
|
|
<figure id="fig1.4.2.1.3"><img src="../images/traefik-guestbook.jpg" alt="traefik-guestbook"><figcaption>Figure: traefik-guestbook</figcaption></figure>
|
|
|
|
<h2 id="参考">参考</h2>
|
|
|
|
<p><a href="http://www.colabug.com/thread-1703745-1-1.html" target="_blank">Traefik-kubernetes 初试</a></p>
|
|
|
|
<p><a href="http://www.tuicool.com/articles/ZnuEfay" target="_blank">Traefik简介</a></p>
|
|
|
|
<p><a href="https://github.com/kubernetes/kubernetes/tree/master/examples/guestbook" target="_blank">Guestbook example</a> </p>
|
|
|
|
<footer class="page-footer-ex"> <span class="page-footer-ex-copyright">for GitBook</span>           <span class="page-footer-ex-footer-update">update
|
2017-08-21 18:44:34 +08:00
|
|
|
2017-08-21 18:23:35
|
2017-08-21 17:44:43 +08:00
|
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|
</span></footer>
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</section>
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</div>
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|
<div class="search-results">
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