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<title>5.2 Service Mesh 服务网格 · Kubernetes Handbook</title>
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<li class="chapter " data-level="1.1" data-path="../">
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<a href="../">
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1. 前言
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<li class="chapter " data-level="1.2" data-path="../concepts/">
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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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</li>
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<li class="chapter " data-level="1.2.2" data-path="../concepts/objects.html">
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<a href="../concepts/objects.html">
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2.2 Objects
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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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</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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</li>
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<li class="chapter " data-level="1.2.2.1.3" data-path="../concepts/pod-security-policy.html">
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<a href="../concepts/pod-security-policy.html">
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2.2.1.3 Pod安全策略
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</a>
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</li>
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<li class="chapter " data-level="1.2.2.1.4" data-path="../concepts/pod-lifecycle.html">
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<a href="../concepts/pod-lifecycle.html">
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2.2.1.4 Pod的生命周期
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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="1.2.2.2" 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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||
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||
</a>
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||
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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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||
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</li>
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||
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<li class="chapter " data-level="1.2.2.17" data-path="../concepts/label.html">
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||
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<a href="../concepts/label.html">
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2.2.17 Label
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||
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||
</a>
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||
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||
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</li>
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<li class="chapter " data-level="1.2.2.18" data-path="../concepts/garbage-collection.html">
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<a href="../concepts/garbage-collection.html">
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2.2.18 垃圾收集
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||
</a>
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</li>
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<li class="chapter " data-level="1.2.2.19" data-path="../concepts/network-policy.html">
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<a href="../concepts/network-policy.html">
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2.2.19 NetworkPolicy
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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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||
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<ul class="articles">
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||
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||
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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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</li>
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||
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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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||
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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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||
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</li>
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<li class="chapter " data-level="1.3.2.2" data-path="../guide/docker-cli-to-kubectl.html">
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||
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<a href="../guide/docker-cli-to-kubectl.html">
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||
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3.2.2 docker用户过度到kubectl命令行指南
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||
|
||
</a>
|
||
|
||
|
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|
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</li>
|
||
|
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|
||
</ul>
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||
</li>
|
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|
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<li class="chapter " data-level="1.3.3" data-path="../guide/cluster-security-management.html">
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<a href="../guide/cluster-security-management.html">
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3.3 集群安全性管理
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||
|
||
</a>
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||
|
||
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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">
|
||
|
||
<a href="../guide/managing-tls-in-a-cluster.html">
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||
|
||
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3.3.1 管理集群中的TLS
|
||
|
||
</a>
|
||
|
||
|
||
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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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||
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||
<a href="../guide/kubelet-authentication-authorization.html">
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||
|
||
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3.3.2 kubelet的认证授权
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3.3" data-path="../guide/tls-bootstrapping.html">
|
||
|
||
<a href="../guide/tls-bootstrapping.html">
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||
|
||
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||
3.3.3 TLS bootstrap
|
||
|
||
</a>
|
||
|
||
|
||
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||
</li>
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||
|
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<li class="chapter " data-level="1.3.3.4" data-path="../guide/kubectl-user-authentication-authorization.html">
|
||
|
||
<a href="../guide/kubectl-user-authentication-authorization.html">
|
||
|
||
|
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3.3.4 kubectl的用户认证授权
|
||
|
||
</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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||
|
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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
|
||
|
||
</a>
|
||
|
||
|
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|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3.6" data-path="../guide/ip-masq-agent.html">
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||
|
||
<a href="../guide/ip-masq-agent.html">
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||
|
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3.3.6 IP伪装代理
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||
|
||
</a>
|
||
|
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|
||
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</li>
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||
|
||
|
||
</ul>
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|
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</li>
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||
|
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<li class="chapter " data-level="1.3.4" data-path="../guide/access-kubernetes-cluster.html">
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|
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<a href="../guide/access-kubernetes-cluster.html">
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|
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3.4 访问 Kubernetes 集群
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||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
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||
|
||
|
||
<li class="chapter " data-level="1.3.4.1" data-path="../guide/access-cluster.html">
|
||
|
||
<a href="../guide/access-cluster.html">
|
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|
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3.4.1 访问集群
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||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.4.2" data-path="../guide/authenticate-across-clusters-kubeconfig.html">
|
||
|
||
<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
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.4.3" data-path="../guide/connecting-to-applications-port-forward.html">
|
||
|
||
<a href="../guide/connecting-to-applications-port-forward.html">
|
||
|
||
|
||
3.4.3 通过端口转发访问集群中的应用程序
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.4.4" data-path="../guide/service-access-application-cluster.html">
|
||
|
||
<a href="../guide/service-access-application-cluster.html">
|
||
|
||
|
||
3.4.4 使用 service 访问群集中的应用程序
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.5" data-path="../guide/application-development-deployment-flow.html">
|
||
|
||
<a href="../guide/application-development-deployment-flow.html">
|
||
|
||
|
||
3.5 在kubernetes中开发部署应用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.3.5.1" data-path="../guide/deploy-applications-in-kubernetes.html">
|
||
|
||
<a href="../guide/deploy-applications-in-kubernetes.html">
|
||
|
||
|
||
3.5.1 适用于kubernetes的应用开发部署流程
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.5.2" data-path="../guide/migrating-hadoop-yarn-to-kubernetes.html">
|
||
|
||
<a href="../guide/migrating-hadoop-yarn-to-kubernetes.html">
|
||
|
||
|
||
3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4" data-path="../practice/">
|
||
|
||
<a href="../practice/">
|
||
|
||
|
||
4. 最佳实践
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.1" data-path="../practice/install-kbernetes1.6-on-centos.html">
|
||
|
||
<a href="../practice/install-kbernetes1.6-on-centos.html">
|
||
|
||
|
||
4.1 在CentOS上部署kubernetes1.6集群
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.1.1" data-path="../practice/create-tls-and-secret-key.html">
|
||
|
||
<a href="../practice/create-tls-and-secret-key.html">
|
||
|
||
|
||
4.1.1 创建TLS证书和秘钥
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.2" data-path="../practice/create-kubeconfig.html">
|
||
|
||
<a href="../practice/create-kubeconfig.html">
|
||
|
||
|
||
4.1.2 创建kubeconfig文件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.3" data-path="../practice/etcd-cluster-installation.html">
|
||
|
||
<a href="../practice/etcd-cluster-installation.html">
|
||
|
||
|
||
4.1.3 创建高可用etcd集群
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.4" data-path="../practice/kubectl-installation.html">
|
||
|
||
<a href="../practice/kubectl-installation.html">
|
||
|
||
|
||
4.1.4 安装kubectl命令行工具
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.5" data-path="../practice/master-installation.html">
|
||
|
||
<a href="../practice/master-installation.html">
|
||
|
||
|
||
4.1.5 部署master节点
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.6" data-path="../practice/node-installation.html">
|
||
|
||
<a href="../practice/node-installation.html">
|
||
|
||
|
||
4.1.6 部署node节点
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.7" data-path="../practice/kubedns-addon-installation.html">
|
||
|
||
<a href="../practice/kubedns-addon-installation.html">
|
||
|
||
|
||
4.1.7 安装kubedns插件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.8" data-path="../practice/dashboard-addon-installation.html">
|
||
|
||
<a href="../practice/dashboard-addon-installation.html">
|
||
|
||
|
||
4.1.8 安装dashboard插件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.9" data-path="../practice/heapster-addon-installation.html">
|
||
|
||
<a href="../practice/heapster-addon-installation.html">
|
||
|
||
|
||
4.1.9 安装heapster插件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.10" data-path="../practice/efk-addon-installation.html">
|
||
|
||
<a href="../practice/efk-addon-installation.html">
|
||
|
||
|
||
4.1.10 安装EFK插件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2" data-path="../practice/service-discovery-and-loadbalancing.html">
|
||
|
||
<a href="../practice/service-discovery-and-loadbalancing.html">
|
||
|
||
|
||
4.2 服务发现与负载均衡
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.2.1" data-path="../practice/traefik-ingress-installation.html">
|
||
|
||
<a href="../practice/traefik-ingress-installation.html">
|
||
|
||
|
||
4.2.1 安装Traefik ingress
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2.2" data-path="../practice/distributed-load-test.html">
|
||
|
||
<a href="../practice/distributed-load-test.html">
|
||
|
||
|
||
4.2.2 分布式负载测试
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2.3" data-path="../practice/network-and-cluster-perfermance-test.html">
|
||
|
||
<a href="../practice/network-and-cluster-perfermance-test.html">
|
||
|
||
|
||
4.2.3 网络和集群性能测试
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2.4" data-path="../practice/edge-node-configuration.html">
|
||
|
||
<a href="../practice/edge-node-configuration.html">
|
||
|
||
|
||
4.2.4 边缘节点配置
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3" data-path="../practice/operation.html">
|
||
|
||
<a href="../practice/operation.html">
|
||
|
||
|
||
4.3 运维管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.3.1" data-path="../practice/service-rolling-update.html">
|
||
|
||
<a href="../practice/service-rolling-update.html">
|
||
|
||
|
||
4.3.1 服务滚动升级
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.2" data-path="../practice/app-log-collection.html">
|
||
|
||
<a href="../practice/app-log-collection.html">
|
||
|
||
|
||
4.3.2 应用日志收集
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.3" data-path="../practice/configuration-best-practice.html">
|
||
|
||
<a href="../practice/configuration-best-practice.html">
|
||
|
||
|
||
4.3.3 配置最佳实践
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.4" data-path="../practice/monitor.html">
|
||
|
||
<a href="../practice/monitor.html">
|
||
|
||
|
||
4.3.4 集群及应用监控
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.5" data-path="../practice/jenkins-ci-cd.html">
|
||
|
||
<a href="../practice/jenkins-ci-cd.html">
|
||
|
||
|
||
4.3.5 使用Jenkins进行持续构建与发布
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.6" data-path="../practice/data-persistence-problem.html">
|
||
|
||
<a href="../practice/data-persistence-problem.html">
|
||
|
||
|
||
4.3.6 数据持久化问题
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.7" data-path="../practice/manage-compute-resources-container.html">
|
||
|
||
<a href="../practice/manage-compute-resources-container.html">
|
||
|
||
|
||
4.3.7 管理容器的计算资源
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.3.8" data-path="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
|
||
|
||
<a href="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
|
||
|
||
|
||
4.3.8 使用Prometheus监控kubernetes集群
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.4" data-path="../practice/storage.html">
|
||
|
||
<a href="../practice/storage.html">
|
||
|
||
|
||
4.4 存储管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.1" data-path="../practice/glusterfs.html">
|
||
|
||
<a href="../practice/glusterfs.html">
|
||
|
||
|
||
4.4.1 GlusterFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.1.1" data-path="../practice/using-glusterfs-for-persistent-storage.html">
|
||
|
||
<a href="../practice/using-glusterfs-for-persistent-storage.html">
|
||
|
||
|
||
4.4.1.1 使用GlusterFS做持久化存储
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.4.1.2" data-path="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
|
||
|
||
<a href="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
|
||
|
||
|
||
4.4.1.2 在OpenShift中使用GlusterFS做持久化存储
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.4.2" data-path="../practice/cephfs.html">
|
||
|
||
<a href="../practice/cephfs.html">
|
||
|
||
|
||
4.4.2 CephFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.2.1" data-path="../practice/using-ceph-for-persistent-storage.html">
|
||
|
||
<a href="../practice/using-ceph-for-persistent-storage.html">
|
||
|
||
|
||
4.4.2.1 使用Ceph做持久化存储
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5" data-path="./">
|
||
|
||
<a href="./">
|
||
|
||
|
||
5. 领域应用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.1" data-path="microservices.html">
|
||
|
||
<a href="microservices.html">
|
||
|
||
|
||
5.1 微服务架构
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.1.1" data-path="service-discovery-in-microservices.html">
|
||
|
||
<a href="service-discovery-in-microservices.html">
|
||
|
||
|
||
5.1.1 微服务中的服务发现
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter active" data-level="1.5.2" data-path="service-mesh.html">
|
||
|
||
<a href="service-mesh.html">
|
||
|
||
|
||
5.2 Service Mesh 服务网格
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.2.1" data-path="istio.html">
|
||
|
||
<a href="istio.html">
|
||
|
||
|
||
5.1.1 Istio
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.2.1.1" data-path="istio-installation.html">
|
||
|
||
<a href="istio-installation.html">
|
||
|
||
|
||
5.1.1.1 安装istio
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.2.1.2" data-path="configuring-request-routing.html">
|
||
|
||
<a href="configuring-request-routing.html">
|
||
|
||
|
||
5.1.1.2 配置请求的路由规则
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.2.2" data-path="linkerd.html">
|
||
|
||
<a href="linkerd.html">
|
||
|
||
|
||
5.1.2 Linkerd
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.2.2.1" data-path="linkerd-user-guide.html">
|
||
|
||
<a href="linkerd-user-guide.html">
|
||
|
||
|
||
5.1.2.1 Linkerd 使用指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.3" data-path="big-data.html">
|
||
|
||
<a href="big-data.html">
|
||
|
||
|
||
5.2 大数据
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.3.1" data-path="spark-standalone-on-kubernetes.html">
|
||
|
||
<a href="spark-standalone-on-kubernetes.html">
|
||
|
||
|
||
5.2.1 Spark standalone on Kubernetes
|
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<li class="chapter " data-level="1.5.3.2" data-path="running-spark-with-kubernetes-native-scheduler.html">
|
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|
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5.2.2 运行支持kubernetes原生调度的Spark程序
|
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5.3 Serverless架构
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6. 开发指南
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6.1 开发环境搭建
|
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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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|
||
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||
6.3 client-go示例
|
||
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|
||
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||
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|
||
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6.4 社区贡献
|
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||
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7. 附录
|
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||
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<ul class="articles">
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||
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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">
|
||
|
||
|
||
7.1 Docker最佳实践
|
||
|
||
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|
||
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||
|
||
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|
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<li class="chapter " data-level="1.7.2" data-path="../appendix/issues.html">
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||
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||
<a href="../appendix/issues.html">
|
||
|
||
|
||
7.2 问题记录
|
||
|
||
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|
||
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||
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||
|
||
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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">
|
||
|
||
|
||
7.3 使用技巧
|
||
|
||
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|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.7.4" data-path="../appendix/debug-kubernetes-services.html">
|
||
|
||
<a href="../appendix/debug-kubernetes-services.html">
|
||
|
||
|
||
7.4 kubernetes service中的故障排查
|
||
|
||
</a>
|
||
|
||
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||
|
||
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|
||
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本书使用 GitBook 发布
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<!-- Title -->
|
||
<h1>
|
||
<i class="fa fa-circle-o-notch fa-spin"></i>
|
||
<a href=".." >5.2 Service Mesh 服务网格</a>
|
||
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<section class="normal markdown-section">
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|
||
<h1 id="service-mesh-服务网格">Service Mesh 服务网格</h1>
|
||
<p>Service mesh 又译作 ”服务网格“，作为服务间通信的基础设施层。Buoyant 公司的 CEO Willian Morgan 在他的这篇文章 <a href="https://buoyant.io/2017/04/25/whats-a-service-mesh-and-why-do-i-need-one/" target="_blank">WHAT’S A SERVICE MESH? AND WHY DO I NEED ONE?</a> 中解释了什么是 Service Mesh，为什么云原生应用需要 Service Mesh。</p>
|
||
<blockquote>
|
||
<p>A service mesh is a dedicated infrastructure layer for handling service-to-service communication. It’s responsible for the reliable delivery of requests through the complex topology of services that comprise a modern, cloud native application. In practice, the service mesh is typically implemented as an array of lightweight network proxies that are deployed alongside application code, without the application needing to be aware.</p>
|
||
</blockquote>
|
||
<h2 id="什么是-service-mesh？">什么是 service mesh？</h2>
|
||
<p>Service mesh 有如下几个特点：</p>
|
||
<ul>
|
||
<li>应用程序间通讯的中间层</li>
|
||
<li>轻量级网络代理</li>
|
||
<li>应用程序无感知</li>
|
||
<li>解耦应用程序的重试/超时、监控、追踪和服务发现</li>
|
||
</ul>
|
||
<p>目前两款流行的 service mesh 开源软件 <a href="https://istio.io" target="_blank">Istio</a> 和 <a href="https://linkerd.io" target="_blank">Linkerd</a> 都可以直接在 kubernetes 中集成，其中 Linkerd 已经成为 CNCF 成员。</p>
|
||
<h2 id="理解-service-mesh">理解 Service Mesh</h2>
|
||
<p>如果用一句话来解释什么是 Service Mesh，可以将它比作是应用程序或者说微服务间的 TCP/IP，负责服务之间的网络调用、限流、熔断和监控。对于编写应用程序来说一般无须关心 TCP/IP 这一层（比如通过 HTTP 协议的 RESTful 应用），同样使用 Service Mesh 也就无须关系服务之间的那些原来是通过应用程序或者其他框架实现的事情，比如 Spring Cloud、OSS，现在只要交给 Service Mesh 就可以了。</p>
|
||
<p><a href="http://philcalcado.com/" target="_blank">Phil Calçado</a> 在他的这篇博客 <a href="http://philcalcado.com/2017/08/03/pattern_service_mesh.html" target="_blank">Pattern: Service Mesh</a> 中详细解释了 Service Mesh 的来龙去脉：</p>
|
||
<ol>
|
||
<li>从最原始的主机之间直接使用网线相连</li>
|
||
<li>网络层的出现</li>
|
||
<li>集成到应用程序内部的控制流</li>
|
||
<li>分解到应用程序外部的控制流</li>
|
||
<li>应用程序的中集成服务发现和断路器</li>
|
||
<li>出现了专门用于服务发现和断路器的软件包/库，如 <a href="https://finagle.github.io/" target="_blank">Twitter 的 Finagle</a> 和 <a href="https://code.facebook.com/posts/1503205539947302" target="_blank">Facebook 的 Proxygen</a>，这时候还是集成在应用程序内部</li>
|
||
<li>出现了专门用于服务发现和断路器的开源软件，如 <a href="http://netflix.github.io/" target="_blank">Netflix OSS</a>、Airbnb 的 <a href="https://github.com/airbnb/synapse" target="_blank">synapse</a> 和 <a href="https://github.com/airbnb/nerve" target="_blank">nerve</a></li>
|
||
<li>最后作为微服务的中间层 service mesh 出现</li>
|
||
</ol>
|
||
<p>Service mesh 的架构如下图所示：</p>
|
||
<figure id="fig1.5.2.1"><img src="../images/serivce-mesh-control-plane.png" alt="Service Mesh 架构图"><figcaption>Figure: Service Mesh 架构图</figcaption></figure>
|
||
<p>图片来自：<a href="http://philcalcado.com/2017/08/03/pattern_service_mesh.html" target="_blank">Pattern: Service Mesh</a></p>
|
||
<p>Service mesh 作为 sidecar 运行，对应用程序来说是透明，所有应用程序间的流量都会通过它，所以对应用程序流量的控制都可以在 serivce mesh 中实现。</p>
|
||
<h2 id="service-mesh如何工作？">Service mesh如何工作？</h2>
|
||
<p>下面以 Linkerd 为例讲解 service mesh 如何工作，Istio 作为 service mesh 的另一种实现原理与 linkerd 基本类似，后续文章将会详解 Istio 和 Linkerd 如何在 kubernetes 中工作。</p>
|
||
<ol>
|
||
<li>Linkerd 将服务请求路由到目的地址，根据中的参数判断是到生产环境、测试环境还是 staging 环境中的服务（服务可能同时部署在这三个环境中），是路由到本地环境还是公有云环境？所有的这些路由信息可以动态配置，可以是全局配置也可以为某些服务单独配置。</li>
|
||
<li>当 Linkerd 确认了目的地址后，将流量发送到相应服务发现端点，在 kubernetes 中是 service，然后 service 会将服务转发给后端的实例。</li>
|
||
<li>Linkerd 根据它观测到最近请求的延迟时间，选择出所有应用程序的实例中响应最快的实例。</li>
|
||
<li>Linkerd 将请求发送给该实例，同时记录响应类型和延迟数据。</li>
|
||
<li>如果该实例挂了、不响应了或者进程不工作了，Linkerd 将把请求发送到其他实例上重试。</li>
|
||
<li>如果该实例持续返回 error，Linkerd 会将该实例从负载均衡池中移除，稍后再周期性得重试。</li>
|
||
<li>如果请求的截止时间已过，Linkerd 主动失败该请求，而不是再次尝试添加负载。</li>
|
||
<li>Linkerd 以 metric 和分布式追踪的形式捕获上述行为的各个方面，这些追踪信息将发送到集中 metric 系统。</li>
|
||
</ol>
|
||
<h2 id="为何使用-service-mesh？">为何使用 service mesh？</h2>
|
||
<p>Service mesh 并没有给我们带来新功能，它是用于解决其他工具已经解决过的问题，只不过这次是在 Cloud Native 的 kubernetes 环境下的实现。</p>
|
||
<p>在传统的 MVC 三层 Web 应用程序架构下，服务之间的通讯并不复杂，在应用程序内部自己管理即可，但是在现今的复杂的大型网站情况下，单体应用被分解为众多的微服务，服务之间的依赖和通讯十分复杂，出现了 twitter 开发的 <a href="https://twitter.github.io/finagle/" target="_blank">Finagle</a>、Netflix 开发的 <a href="https://github.com/Netflix/Hystrix" target="_blank">Hystrix</a> 和 Google 的 Stubby 这样的 ”胖客户端“ 库，这些就是早期的 service mesh，但是它们都近适用于特定的环境和特定的开发语言，并不能作为平台级的 service mesh 支持。</p>
|
||
<p>在 Cloud Native 架构下，容器的使用给予了异构应用程序的更多可行性，kubernetes 增强的应用的横向扩容能力，用户可以快速的编排出复杂环境、复杂依赖关系的应用程序，同时开发者又无须过分关心应用程序的监控、扩展性、服务发现和分布式追踪这些繁琐的事情而专注于程序开发，赋予开发者更多的创造性。</p>
|
||
<h2 id="参考">参考</h2>
|
||
<p><a href="https://buoyant.io/2017/04/25/whats-a-service-mesh-and-why-do-i-need-one/" target="_blank">WHAT’S A SERVICE MESH? AND WHY DO I NEED ONE?</a></p>
|
||
<p><a href="http://redmonk.com/jgovernor/2017/05/31/so-what-even-is-a-service-mesh-hot-take-on-istio-and-linkerd" target="_blank">So what even is a Service Mesh? Hot take on Istio and Linkerd</a></p>
|
||
<p><a href="https://medium.com/attest-engineering/linkerd-a-service-mesh-for-aws-ecs-937f201f847a" target="_blank">linkerd: A service mesh for AWS ECS</a></p>
|
||
<p><a href="https://istio.io/blog/istio-service-mesh-for-microservices.html" target="_blank">Introducing Istio: A robust service mesh for microservices</a></p>
|
||
<p><a href="http://blog.christianposta.com/microservices/application-network-functions-with-esbs-api-management-and-now-service-mesh/" target="_blank">Application Network Functions With ESBs, API Management, and Now.. Service Mesh?</a></p>
|
||
<p><a href="http://philcalcado.com/2017/08/03/pattern_service_mesh.html" target="_blank">Pattern: Service Mesh</a></p>
|
||
<p><a href="https://istio.doczh.cn/" target="_blank">Istio官方文档中文版</a></p>
|
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<footer class="page-footer-ex"> <span class="page-footer-ex-copyright"> © All Rights Reserved </span>            <span class="page-footer-ex-footer-update"> updated 2017-09-20 21:55:29 </span> </footer>
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