2445 lines
112 KiB
HTML
2445 lines
112 KiB
HTML
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<!DOCTYPE HTML>
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<html lang="zh-hans" >
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<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
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<title>2.2.15.1 ConfigMap的热更新 · Kubernetes Handbook</title>
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<meta name="generator" content="GitBook 3.2.2">
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<meta name="author" content="Jimmy Song">
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<li class="chapter " data-level="1.1" data-path="../">
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<a href="../">
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序言
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</a>
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</li>
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<li class="chapter " data-level="1.2" data-path="../cloud-native/kubernetes-and-cloud-native-app-overview.html">
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<a href="../cloud-native/kubernetes-and-cloud-native-app-overview.html">
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1. Kubernetes与云原生应用概览
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</a>
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</li>
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<li class="chapter " data-level="1.3" data-path="./">
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<a href="./">
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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="1.3.1" data-path="concepts.html">
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<a href="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="1.3.2" data-path="objects.html">
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<a href="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="1.3.2.1" data-path="pod-overview.html">
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<a href="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="1.3.2.1.1" data-path="pod.html">
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<a href="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="1.3.2.1.2" data-path="init-containers.html">
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<a href="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="1.3.2.1.3" data-path="pod-security-policy.html">
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<a href="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="1.3.2.1.4" data-path="pod-lifecycle.html">
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<a href="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="1.3.2.2" data-path="node.html">
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<a href="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="1.3.2.3" data-path="namespace.html">
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<a href="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="1.3.2.4" data-path="service.html">
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<a href="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="1.3.2.5" data-path="volume.html">
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<a href="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="1.3.2.6" data-path="deployment.html">
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<a href="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="1.3.2.7" data-path="secret.html">
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<a href="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="1.3.2.8" data-path="statefulset.html">
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<a href="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="1.3.2.9" data-path="daemonset.html">
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<a href="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="1.3.2.10" data-path="serviceaccount.html">
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<a href="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="1.3.2.11" data-path="replicaset.html">
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<a href="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="1.3.2.12" data-path="job.html">
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<a href="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="1.3.2.13" data-path="cronjob.html">
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<a href="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="1.3.2.14" data-path="ingress.html">
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<a href="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="1.3.2.15" data-path="configmap.html">
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<a href="configmap.html">
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2.2.15 ConfigMap
|
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</a>
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<ul class="articles">
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<li class="chapter active" data-level="1.3.2.15.1" data-path="configmap-hot-update.html">
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<a href="configmap-hot-update.html">
|
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|
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|
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|
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2.2.15.1 ConfigMap的热更新
|
||
|
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|
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</a>
|
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</li>
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</ul>
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|
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|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.3.2.16" data-path="horizontal-pod-autoscaling.html">
|
||
|
|
|
||
|
|
<a href="horizontal-pod-autoscaling.html">
|
||
|
|
|
||
|
|
|
||
|
|
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="1.3.2.17" data-path="label.html">
|
||
|
|
|
||
|
|
<a href="label.html">
|
||
|
|
|
||
|
|
|
||
|
|
2.2.17 Label
|
||
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|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.3.2.18" data-path="garbage-collection.html">
|
||
|
|
|
||
|
|
<a href="garbage-collection.html">
|
||
|
|
|
||
|
|
|
||
|
|
2.2.18 垃圾收集
|
||
|
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|
||
|
|
</a>
|
||
|
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|
||
|
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|
||
|
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|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.3.2.19" data-path="network-policy.html">
|
||
|
|
|
||
|
|
<a href="network-policy.html">
|
||
|
|
|
||
|
|
|
||
|
|
2.2.19 NetworkPolicy
|
||
|
|
|
||
|
|
</a>
|
||
|
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|
||
|
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|
||
|
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|
||
|
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</li>
|
||
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|
||
|
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|
||
|
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</ul>
|
||
|
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|
||
|
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</li>
|
||
|
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|
||
|
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|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
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|
||
|
|
<li class="chapter " data-level="1.4" data-path="../guide/">
|
||
|
|
|
||
|
|
<a href="../guide/">
|
||
|
|
|
||
|
|
|
||
|
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3. 用户指南
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.1" data-path="../guide/resource-configuration.html">
|
||
|
|
|
||
|
|
<a href="../guide/resource-configuration.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.1 资源对象配置
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.1.1" data-path="../guide/configure-liveness-readiness-probes.html">
|
||
|
|
|
||
|
|
<a href="../guide/configure-liveness-readiness-probes.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.1.1 配置Pod的liveness和readiness探针
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.1.2" data-path="../guide/configure-pod-service-account.html">
|
||
|
|
|
||
|
|
<a href="../guide/configure-pod-service-account.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.1.2 配置Pod的Service Account
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.1.3" data-path="../guide/secret-configuration.html">
|
||
|
|
|
||
|
|
<a href="../guide/secret-configuration.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.1.3 Secret配置
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.1.4" data-path="../guide/resource-quota-management.html">
|
||
|
|
|
||
|
|
<a href="../guide/resource-quota-management.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.2.3 管理namespace中的资源配额
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.2" data-path="../guide/command-usage.html">
|
||
|
|
|
||
|
|
<a href="../guide/command-usage.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.2 命令使用
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.2.1" data-path="../guide/docker-cli-to-kubectl.html">
|
||
|
|
|
||
|
|
<a href="../guide/docker-cli-to-kubectl.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.2.1 docker用户过度到kubectl命令行指南
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.2.2" data-path="../guide/using-kubectl.html">
|
||
|
|
|
||
|
|
<a href="../guide/using-kubectl.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.2.2 kubectl命令概览
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.2.3" data-path="../guide/kubectl-cheatsheet.html">
|
||
|
|
|
||
|
|
<a href="../guide/kubectl-cheatsheet.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.2.3 kubectl命令技巧大全
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3" data-path="../guide/cluster-security-management.html">
|
||
|
|
|
||
|
|
<a href="../guide/cluster-security-management.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3 集群安全性管理
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3.1" data-path="../guide/managing-tls-in-a-cluster.html">
|
||
|
|
|
||
|
|
<a href="../guide/managing-tls-in-a-cluster.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3.1 管理集群中的TLS
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3.2" data-path="../guide/kubelet-authentication-authorization.html">
|
||
|
|
|
||
|
|
<a href="../guide/kubelet-authentication-authorization.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3.2 kubelet的认证授权
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3.3" data-path="../guide/tls-bootstrapping.html">
|
||
|
|
|
||
|
|
<a href="../guide/tls-bootstrapping.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3.3 TLS bootstrap
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3.4" data-path="../guide/kubectl-user-authentication-authorization.html">
|
||
|
|
|
||
|
|
<a href="../guide/kubectl-user-authentication-authorization.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3.4 创建用户认证授权的kubeconfig文件
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3.5" data-path="../guide/rbac.html">
|
||
|
|
|
||
|
|
<a href="../guide/rbac.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3.5 RBAC——基于角色的访问控制
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.3.6" data-path="../guide/ip-masq-agent.html">
|
||
|
|
|
||
|
|
<a href="../guide/ip-masq-agent.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.3.6 IP伪装代理
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.4" data-path="../guide/access-kubernetes-cluster.html">
|
||
|
|
|
||
|
|
<a href="../guide/access-kubernetes-cluster.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.4 访问 Kubernetes 集群
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.4.1" data-path="../guide/access-cluster.html">
|
||
|
|
|
||
|
|
<a href="../guide/access-cluster.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.4.1 访问集群
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.4.2" data-path="../guide/authenticate-across-clusters-kubeconfig.html">
|
||
|
|
|
||
|
|
<a href="../guide/authenticate-across-clusters-kubeconfig.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.4.2 使用 kubeconfig 文件配置跨集群认证
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.4.3" 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="1.4.4.4" 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="1.4.5" 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="1.4.5.1" 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="1.4.5.2" 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>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.4.5.3" data-path="../guide/using-statefulset.html">
|
||
|
|
|
||
|
|
<a href="../guide/using-statefulset.html">
|
||
|
|
|
||
|
|
|
||
|
|
3.5.3 使用StatefulSet部署用状态应用
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5" data-path="../practice/">
|
||
|
|
|
||
|
|
<a href="../practice/">
|
||
|
|
|
||
|
|
|
||
|
|
4. 最佳实践
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.1" 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="1.5.1.1" 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="1.5.1.2" 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="1.5.1.3" 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="1.5.1.4" 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="1.5.1.5" 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="1.5.1.6" 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="1.5.1.7" 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="1.5.1.8" 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="1.5.1.9" 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="1.5.1.10" 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="1.5.2" 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="1.5.2.1" 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="1.5.2.2" 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="1.5.2.3" 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="1.5.2.4" 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>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.2.5" data-path="../practice/nginx-ingress-installation.html">
|
||
|
|
|
||
|
|
<a href="../practice/nginx-ingress-installation.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.2.5 安装Nginx ingress
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.3" 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="1.5.3.1" 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="1.5.3.2" 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="1.5.3.3" 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="1.5.3.4" 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="1.5.3.5" 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="1.5.3.6" 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="1.5.3.7" 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>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.3.8" data-path="../practice/using-heapster-to-get-object-metrics.html">
|
||
|
|
|
||
|
|
<a href="../practice/using-heapster-to-get-object-metrics.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.3.9 使用Heapster获取集群和对象的metric数据
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.4" 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="1.5.4.1" data-path="../practice/glusterfs.html">
|
||
|
|
|
||
|
|
<a href="../practice/glusterfs.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.4.1 GlusterFS
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.4.1.1" 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="1.5.4.1.2" 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="1.5.4.2" data-path="../practice/cephfs.html">
|
||
|
|
|
||
|
|
<a href="../practice/cephfs.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.4.2 CephFS
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.4.2.1" 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>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.5" data-path="../practice/services-management-tool.html">
|
||
|
|
|
||
|
|
<a href="../practice/services-management-tool.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.5 服务编排管理
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.5.1" data-path="../practice/helm.html">
|
||
|
|
|
||
|
|
<a href="../practice/helm.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.5.1 使用Helm管理kubernetes应用
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.5.2" data-path="../practice/create-private-charts-repo.html">
|
||
|
|
|
||
|
|
<a href="../practice/create-private-charts-repo.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.5.2 构建私有Chart仓库
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.6" data-path="../practice/ci-cd.html">
|
||
|
|
|
||
|
|
<a href="../practice/ci-cd.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.6 持续集成与发布
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.6.1" data-path="../practice/jenkins-ci-cd.html">
|
||
|
|
|
||
|
|
<a href="../practice/jenkins-ci-cd.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.6.1 使用Jenkins进行持续集成与发布
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.6.2" data-path="../practice/drone-ci-cd.html">
|
||
|
|
|
||
|
|
<a href="../practice/drone-ci-cd.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.6.2 使用Drone进行持续集成与发布
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.7" data-path="../practice/update-and-upgrade.html">
|
||
|
|
|
||
|
|
<a href="../practice/update-and-upgrade.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.7 更新与升级
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.7.1" data-path="../practice/manually-upgrade.html">
|
||
|
|
|
||
|
|
<a href="../practice/manually-upgrade.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.7.1 手动升级kubernetes集群
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.5.7.2" data-path="../practice/dashboard-upgrade.html">
|
||
|
|
|
||
|
|
<a href="../practice/dashboard-upgrade.html">
|
||
|
|
|
||
|
|
|
||
|
|
4.7.2 升级dashboard
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6" data-path="../usecases/">
|
||
|
|
|
||
|
|
<a href="../usecases/">
|
||
|
|
|
||
|
|
|
||
|
|
5. 领域应用
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.1" data-path="../usecases/microservices.html">
|
||
|
|
|
||
|
|
<a href="../usecases/microservices.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1 微服务架构
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.1.1" data-path="../usecases/service-discovery-in-microservices.html">
|
||
|
|
|
||
|
|
<a href="../usecases/service-discovery-in-microservices.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.1 微服务中的服务发现
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2" data-path="../usecases/service-mesh.html">
|
||
|
|
|
||
|
|
<a href="../usecases/service-mesh.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.2 Service Mesh 服务网格
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.1" data-path="../usecases/istio.html">
|
||
|
|
|
||
|
|
<a href="../usecases/istio.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.1 Istio
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.1.1" data-path="../usecases/istio-installation.html">
|
||
|
|
|
||
|
|
<a href="../usecases/istio-installation.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.1.1 安装并试用Istio service mesh
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.1.2" data-path="../usecases/configuring-request-routing.html">
|
||
|
|
|
||
|
|
<a href="../usecases/configuring-request-routing.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.1.2 配置请求的路由规则
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.1.3" data-path="../usecases/install-and-expand-istio-mesh.html">
|
||
|
|
|
||
|
|
<a href="../usecases/install-and-expand-istio-mesh.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.1.3 安装和拓展Istio service mesh
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.1.4" data-path="../usecases/integrating-vms.html">
|
||
|
|
|
||
|
|
<a href="../usecases/integrating-vms.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.1.4 集成虚拟机
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.2" data-path="../usecases/linkerd.html">
|
||
|
|
|
||
|
|
<a href="../usecases/linkerd.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.2 Linkerd
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.2.2.1" data-path="../usecases/linkerd-user-guide.html">
|
||
|
|
|
||
|
|
<a href="../usecases/linkerd-user-guide.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.1.2.1 Linkerd 使用指南
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.3" data-path="../usecases/big-data.html">
|
||
|
|
|
||
|
|
<a href="../usecases/big-data.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.2 大数据
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.3.1" data-path="../usecases/spark-standalone-on-kubernetes.html">
|
||
|
|
|
||
|
|
<a href="../usecases/spark-standalone-on-kubernetes.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.2.1 Spark standalone on Kubernetes
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.3.2" data-path="../usecases/running-spark-with-kubernetes-native-scheduler.html">
|
||
|
|
|
||
|
|
<a href="../usecases/running-spark-with-kubernetes-native-scheduler.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.2.2 运行支持kubernetes原生调度的Spark程序
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.4" data-path="../usecases/serverless.html">
|
||
|
|
|
||
|
|
<a href="../usecases/serverless.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.3 Serverless架构
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.6.5" data-path="../usecases/edge-computing.html">
|
||
|
|
|
||
|
|
<a href="../usecases/edge-computing.html">
|
||
|
|
|
||
|
|
|
||
|
|
5.4 边缘计算
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.7" data-path="../develop/">
|
||
|
|
|
||
|
|
<a href="../develop/">
|
||
|
|
|
||
|
|
|
||
|
|
6. 开发指南
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.7.1" data-path="../develop/developing-environment.html">
|
||
|
|
|
||
|
|
<a href="../develop/developing-environment.html">
|
||
|
|
|
||
|
|
|
||
|
|
6.1 开发环境搭建
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.7.2" data-path="../develop/testing.html">
|
||
|
|
|
||
|
|
<a href="../develop/testing.html">
|
||
|
|
|
||
|
|
|
||
|
|
6.2 单元测试和集成测试
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.7.3" data-path="../develop/client-go-sample.html">
|
||
|
|
|
||
|
|
<a href="../develop/client-go-sample.html">
|
||
|
|
|
||
|
|
|
||
|
|
6.3 client-go示例
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.7.4" data-path="../develop/contribute.html">
|
||
|
|
|
||
|
|
<a href="../develop/contribute.html">
|
||
|
|
|
||
|
|
|
||
|
|
6.4 社区贡献
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.7.5" data-path="../develop/minikube.html">
|
||
|
|
|
||
|
|
<a href="../develop/minikube.html">
|
||
|
|
|
||
|
|
|
||
|
|
6.5 Minikube
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.8" data-path="../appendix/">
|
||
|
|
|
||
|
|
<a href="../appendix/">
|
||
|
|
|
||
|
|
|
||
|
|
7. 附录
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul class="articles">
|
||
|
|
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.8.1" data-path="../appendix/docker-best-practice.html">
|
||
|
|
|
||
|
|
<a href="../appendix/docker-best-practice.html">
|
||
|
|
|
||
|
|
|
||
|
|
7.1 Docker最佳实践
|
||
|
|
|
||
|
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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="1.8.2" data-path="../appendix/issues.html">
|
||
|
|
|
||
|
|
<a href="../appendix/issues.html">
|
||
|
|
|
||
|
|
|
||
|
|
7.2 问题记录
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
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|
||
|
|
</li>
|
||
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|
||
|
|
<li class="chapter " data-level="1.8.3" data-path="../appendix/tricks.html">
|
||
|
|
|
||
|
|
<a href="../appendix/tricks.html">
|
||
|
|
|
||
|
|
|
||
|
|
7.3 使用技巧
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</li>
|
||
|
|
|
||
|
|
<li class="chapter " data-level="1.8.4" data-path="../appendix/debug-kubernetes-services.html">
|
||
|
|
|
||
|
|
<a href="../appendix/debug-kubernetes-services.html">
|
||
|
|
|
||
|
|
|
||
|
|
7.4 kubernetes中的应用故障排查
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
|
|
|
||
|
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|
||
|
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</li>
|
||
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|
||
|
|
<li class="chapter " data-level="1.8.5" data-path="../appendix/material-share.html">
|
||
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|
||
|
|
<a href="../appendix/material-share.html">
|
||
|
|
|
||
|
|
|
||
|
|
7.5 Kubernetes相关资讯和情报链接
|
||
|
|
|
||
|
|
</a>
|
||
|
|
|
||
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|
||
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</li>
|
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|
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|
||
|
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</ul>
|
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|
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</li>
|
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|
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|
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<li class="divider"></li>
|
||
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|
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<li>
|
||
|
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<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
|
||
|
|
本书使用 GitBook 发布
|
||
|
|
</a>
|
||
|
|
</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
|
||
|
|
</nav>
|
||
|
|
|
||
|
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|
||
|
|
</div>
|
||
|
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|
||
|
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<div class="book-body">
|
||
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|
||
|
|
<div class="body-inner">
|
||
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|
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|
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|
||
|
|
<div class="book-header" role="navigation">
|
||
|
|
|
||
|
|
|
||
|
|
<!-- Title -->
|
||
|
|
<h1>
|
||
|
|
<i class="fa fa-circle-o-notch fa-spin"></i>
|
||
|
|
<a href=".." >2.2.15.1 ConfigMap的热更新</a>
|
||
|
|
</h1>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<div class="page-wrapper" tabindex="-1" role="main">
|
||
|
|
<div class="page-inner">
|
||
|
|
|
||
|
|
<div class="search-plus" id="book-search-results">
|
||
|
|
<div class="search-noresults">
|
||
|
|
|
||
|
|
<section class="normal markdown-section">
|
||
|
|
|
||
|
|
<h1 id="configmap的热更新">ConfigMap的热更新</h1>
|
||
|
|
<p>ConfigMap是用来存储配置文件的kubernetes资源对象，所有的配置内容都存储在etcd中，下文主要是探究 ConfigMap 的创建和更新流程，以及对 ConfigMap 更新后容器内挂载的内容是否同步更新的测试。</p>
|
||
|
|
<h2 id="测试示例">测试示例</h2>
|
||
|
|
<p>假设我们在 <code>default</code> namespace 下有一个名为 <code>nginx-config</code> 的 ConfigMap，可以使用 <code>kubectl</code>命令来获取：</p>
|
||
|
|
<pre><code class="lang-bash">$ kubectl get configmap nginx-config
|
||
|
|
NAME DATA AGE
|
||
|
|
nginx-config 1 99d
|
||
|
|
</code></pre>
|
||
|
|
<p>获取该ConfigMap的内容。</p>
|
||
|
|
<pre><code class="lang-bash">kubectl get configmap nginx-config -o yaml
|
||
|
|
</code></pre>
|
||
|
|
<pre><code class="lang-bash">apiVersion: v1
|
||
|
|
data:
|
||
|
|
nginx.conf: |-
|
||
|
|
worker_processes 1;
|
||
|
|
|
||
|
|
events { worker_connections 1024; }
|
||
|
|
|
||
|
|
http {
|
||
|
|
sendfile on;
|
||
|
|
|
||
|
|
server {
|
||
|
|
listen 80;
|
||
|
|
|
||
|
|
<span class="hljs-comment"># a test endpoint that returns http 200s</span>
|
||
|
|
location / {
|
||
|
|
proxy_pass http://httpstat.us/200;
|
||
|
|
proxy_<span class="hljs-built_in">set</span>_header X-Real-IP <span class="hljs-variable">$remote_addr</span>;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
server {
|
||
|
|
|
||
|
|
listen 80;
|
||
|
|
server_name api.hello.world;
|
||
|
|
|
||
|
|
location / {
|
||
|
|
proxy_pass http://l5d.default.svc.cluster.local;
|
||
|
|
proxy_<span class="hljs-built_in">set</span>_header Host <span class="hljs-variable">$host</span>;
|
||
|
|
proxy_<span class="hljs-built_in">set</span>_header Connection <span class="hljs-string">""</span>;
|
||
|
|
proxy_http_version 1.1;
|
||
|
|
|
||
|
|
more_clear_input_headers <span class="hljs-string">'l5d-ctx-*'</span> <span class="hljs-string">'l5d-dtab'</span> <span class="hljs-string">'l5d-sample'</span>;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
server {
|
||
|
|
|
||
|
|
listen 80;
|
||
|
|
server_name www.hello.world;
|
||
|
|
|
||
|
|
location / {
|
||
|
|
|
||
|
|
|
||
|
|
<span class="hljs-comment"># allow 'employees' to perform dtab overrides</span>
|
||
|
|
<span class="hljs-keyword">if</span> (<span class="hljs-variable">$cookie_special_employee_cookie</span> != <span class="hljs-string">"letmein"</span>) {
|
||
|
|
more_clear_input_headers <span class="hljs-string">'l5d-ctx-*'</span> <span class="hljs-string">'l5d-dtab'</span> <span class="hljs-string">'l5d-sample'</span>;
|
||
|
|
}
|
||
|
|
|
||
|
|
<span class="hljs-comment"># add a dtab override to get people to our beta, world-v2</span>
|
||
|
|
<span class="hljs-built_in">set</span> <span class="hljs-variable">$xheader</span> <span class="hljs-string">""</span>;
|
||
|
|
|
||
|
|
<span class="hljs-keyword">if</span> (<span class="hljs-variable">$cookie_special_employee_cookie</span> ~* <span class="hljs-string">"dogfood"</span>) {
|
||
|
|
<span class="hljs-built_in">set</span> <span class="hljs-variable">$xheader</span> <span class="hljs-string">"/host/world => /srv/world-v2;"</span>;
|
||
|
|
}
|
||
|
|
|
||
|
|
proxy_<span class="hljs-built_in">set</span>_header <span class="hljs-string">'l5d-dtab'</span> <span class="hljs-variable">$xheader</span>;
|
||
|
|
|
||
|
|
|
||
|
|
proxy_pass http://l5d.default.svc.cluster.local;
|
||
|
|
proxy_<span class="hljs-built_in">set</span>_header Host <span class="hljs-variable">$host</span>;
|
||
|
|
proxy_<span class="hljs-built_in">set</span>_header Connection <span class="hljs-string">""</span>;
|
||
|
|
proxy_http_version 1.1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
kind: ConfigMap
|
||
|
|
metadata:
|
||
|
|
creationTimestamp: 2017-08-01T06:53:17Z
|
||
|
|
name: nginx-config
|
||
|
|
namespace: default
|
||
|
|
resourceVersion: <span class="hljs-string">"14925806"</span>
|
||
|
|
selfLink: /api/v1/namespaces/default/configmaps/nginx-config
|
||
|
|
uid: 18d70527-7686-11e7-bfbd-8af1e3a7c5bd
|
||
|
|
</code></pre>
|
||
|
|
<p>ConfigMap中的内容是存储到etcd中的，然后查询etcd：</p>
|
||
|
|
<pre><code class="lang-bash">ETCDCTL_API=3 etcdctl get /registry/configmaps/default/nginx-config
|
||
|
|
/registry/configmaps/default/nginx-config
|
||
|
|
</code></pre>
|
||
|
|
<p>注意使用 v3 版本的 etcdctl API，下面是输出结果：</p>
|
||
|
|
<pre><code class="lang-bash">k8s
|
||
|
|
|
||
|
|
v1 ConfigMap�
|
||
|
|
|
||
|
|
T
|
||
|
|
|
||
|
|
nginx-configdefault<span class="hljs-string">"*<span class="hljs-variable">$18d70527</span>-7686-11e7-bfbd-8af1e3a7c5bd28B
|
||
|
|
�ʀ����xz�
|
||
|
|
|
||
|
|
|
||
|
|
nginx.conf�
|
||
|
|
worker_processes 1;
|
||
|
|
|
||
|
|
events { worker_connections 1024; }
|
||
|
|
|
||
|
|
http {
|
||
|
|
sendfile on;
|
||
|
|
|
||
|
|
server {
|
||
|
|
listen 80;
|
||
|
|
|
||
|
|
# a test endpoint that returns http 200s
|
||
|
|
location / {
|
||
|
|
proxy_pass http://httpstat.us/200;
|
||
|
|
proxy_set_header X-Real-IP <span class="hljs-variable">$remote_addr</span>;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
server {
|
||
|
|
|
||
|
|
listen 80;
|
||
|
|
server_name api.hello.world;
|
||
|
|
|
||
|
|
location / {
|
||
|
|
proxy_pass http://l5d.default.svc.cluster.local;
|
||
|
|
proxy_set_header Host <span class="hljs-variable">$host</span>;
|
||
|
|
proxy_set_header Connection "</span><span class="hljs-string">";
|
||
|
|
proxy_http_version 1.1;
|
||
|
|
|
||
|
|
more_clear_input_headers 'l5d-ctx-*' 'l5d-dtab' 'l5d-sample';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
server {
|
||
|
|
|
||
|
|
listen 80;
|
||
|
|
server_name www.hello.world;
|
||
|
|
|
||
|
|
location / {
|
||
|
|
|
||
|
|
|
||
|
|
# allow 'employees' to perform dtab overrides
|
||
|
|
if (<span class="hljs-variable">$cookie_special_employee_cookie</span> != "</span>letmein<span class="hljs-string">") {
|
||
|
|
more_clear_input_headers 'l5d-ctx-*' 'l5d-dtab' 'l5d-sample';
|
||
|
|
}
|
||
|
|
|
||
|
|
# add a dtab override to get people to our beta, world-v2
|
||
|
|
set <span class="hljs-variable">$xheader</span> "</span><span class="hljs-string">";
|
||
|
|
|
||
|
|
if (<span class="hljs-variable">$cookie_special_employee_cookie</span> ~* "</span>dogfood<span class="hljs-string">") {
|
||
|
|
set <span class="hljs-variable">$xheader</span> "</span>/host/world => /srv/world-v2;<span class="hljs-string">";
|
||
|
|
}
|
||
|
|
|
||
|
|
proxy_set_header 'l5d-dtab' <span class="hljs-variable">$xheader</span>;
|
||
|
|
|
||
|
|
|
||
|
|
proxy_pass http://l5d.default.svc.cluster.local;
|
||
|
|
proxy_set_header Host <span class="hljs-variable">$host</span>;
|
||
|
|
proxy_set_header Connection "</span><span class="hljs-string">";
|
||
|
|
proxy_http_version 1.1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}"</span>
|
||
|
|
</code></pre>
|
||
|
|
<p>输出中在 <code>nginx.conf</code> 配置文件的基础中增加了文件头内容，是kubernetes增加的。 </p>
|
||
|
|
<h2 id="代码">代码</h2>
|
||
|
|
<p>ConfigMap 结构体的定义：</p>
|
||
|
|
<pre><code class="lang-go"><span class="hljs-comment">// ConfigMap holds configuration data for pods to consume.</span>
|
||
|
|
<span class="hljs-keyword">type</span> ConfigMap <span class="hljs-keyword">struct</span> {
|
||
|
|
metav1.TypeMeta <span class="hljs-string">`json:",inline"`</span>
|
||
|
|
<span class="hljs-comment">// Standard object's metadata.</span>
|
||
|
|
<span class="hljs-comment">// More info: http://releases.k8s.io/HEAD/docs/devel/api-conventions.md#metadata</span>
|
||
|
|
<span class="hljs-comment">// +optional</span>
|
||
|
|
metav1.ObjectMeta <span class="hljs-string">`json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`</span>
|
||
|
|
|
||
|
|
<span class="hljs-comment">// Data contains the configuration data.</span>
|
||
|
|
<span class="hljs-comment">// Each key must be a valid DNS_SUBDOMAIN with an optional leading dot.</span>
|
||
|
|
<span class="hljs-comment">// +optional</span>
|
||
|
|
Data <span class="hljs-keyword">map</span>[<span class="hljs-keyword">string</span>]<span class="hljs-keyword">string</span> <span class="hljs-string">`json:"data,omitempty" protobuf:"bytes,2,rep,name=data"`</span>
|
||
|
|
}
|
||
|
|
</code></pre>
|
||
|
|
<p>在 <code>staging/src/k8s.io/client-go/kubernetes/typed/core/v1/configmap.go</code> 中ConfigMap 的接口定义：</p>
|
||
|
|
<pre><code class="lang-go"><span class="hljs-comment">// ConfigMapInterface has methods to work with ConfigMap resources.</span>
|
||
|
|
<span class="hljs-keyword">type</span> ConfigMapInterface <span class="hljs-keyword">interface</span> {
|
||
|
|
Create(*v1.ConfigMap) (*v1.ConfigMap, error)
|
||
|
|
Update(*v1.ConfigMap) (*v1.ConfigMap, error)
|
||
|
|
Delete(name <span class="hljs-keyword">string</span>, options *meta_v1.DeleteOptions) error
|
||
|
|
DeleteCollection(options *meta_v1.DeleteOptions, listOptions meta_v1.ListOptions) error
|
||
|
|
Get(name <span class="hljs-keyword">string</span>, options meta_v1.GetOptions) (*v1.ConfigMap, error)
|
||
|
|
List(opts meta_v1.ListOptions) (*v1.ConfigMapList, error)
|
||
|
|
Watch(opts meta_v1.ListOptions) (watch.Interface, error)
|
||
|
|
Patch(name <span class="hljs-keyword">string</span>, pt types.PatchType, data []<span class="hljs-keyword">byte</span>, subresources ...<span class="hljs-keyword">string</span>) (result *v1.ConfigMap, err error)
|
||
|
|
ConfigMapExpansion
|
||
|
|
}
|
||
|
|
</code></pre>
|
||
|
|
<p>在 <code>staging/src/k8s.io/client-go/kubernetes/typed/core/v1/configmap.go</code> 中创建 ConfigMap 的方法如下:</p>
|
||
|
|
<pre><code class="lang-go"><span class="hljs-comment">// Create takes the representation of a configMap and creates it. Returns the server's representation of the configMap, and an error, if there is any.</span>
|
||
|
|
<span class="hljs-keyword">func</span> (c *configMaps) Create(configMap *v1.ConfigMap) (result *v1.ConfigMap, err error) {
|
||
|
|
result = &v1.ConfigMap{}
|
||
|
|
err = c.client.Post().
|
||
|
|
Namespace(c.ns).
|
||
|
|
Resource(<span class="hljs-string">"configmaps"</span>).
|
||
|
|
Body(configMap).
|
||
|
|
Do().
|
||
|
|
Into(result)
|
||
|
|
<span class="hljs-keyword">return</span>
|
||
|
|
}
|
||
|
|
</code></pre>
|
||
|
|
<p>通过 RESTful 请求在 etcd 中存储 ConfigMap 的配置，该方法中设置了资源对象的 namespace 和 HTTP 请求中的 body，执行后将请求结果保存到 result 中返回给调用者。</p>
|
||
|
|
<p><strong>注意 Body 的结构</strong></p>
|
||
|
|
<pre><code class="lang-java"><span class="hljs-comment">// Body makes the request use obj as the body. Optional.</span>
|
||
|
|
<span class="hljs-comment">// If obj is a string, try to read a file of that name.</span>
|
||
|
|
<span class="hljs-comment">// If obj is a []byte, send it directly.</span>
|
||
|
|
<span class="hljs-comment">// If obj is an io.Reader, use it directly.</span>
|
||
|
|
<span class="hljs-comment">// If obj is a runtime.Object, marshal it correctly, and set Content-Type header.</span>
|
||
|
|
<span class="hljs-comment">// If obj is a runtime.Object and nil, do nothing.</span>
|
||
|
|
<span class="hljs-comment">// Otherwise, set an error.</span>
|
||
|
|
</code></pre>
|
||
|
|
<p>创建 ConfigMap RESTful 请求中的的 Body 中包含 <code>ObjectMeta</code> 和 <code>namespace</code>。</p>
|
||
|
|
<p>HTTP 请求中的结构体：</p>
|
||
|
|
<pre><code class="lang-go"><span class="hljs-comment">// Request allows for building up a request to a server in a chained fashion.</span>
|
||
|
|
<span class="hljs-comment">// Any errors are stored until the end of your call, so you only have to</span>
|
||
|
|
<span class="hljs-comment">// check once.</span>
|
||
|
|
<span class="hljs-keyword">type</span> Request <span class="hljs-keyword">struct</span> {
|
||
|
|
<span class="hljs-comment">// required</span>
|
||
|
|
client HTTPClient
|
||
|
|
verb <span class="hljs-keyword">string</span>
|
||
|
|
|
||
|
|
baseURL *url.URL
|
||
|
|
content ContentConfig
|
||
|
|
serializers Serializers
|
||
|
|
|
||
|
|
<span class="hljs-comment">// generic components accessible via method setters</span>
|
||
|
|
pathPrefix <span class="hljs-keyword">string</span>
|
||
|
|
subpath <span class="hljs-keyword">string</span>
|
||
|
|
params url.Values
|
||
|
|
headers http.Header
|
||
|
|
|
||
|
|
<span class="hljs-comment">// structural elements of the request that are part of the Kubernetes API conventions</span>
|
||
|
|
namespace <span class="hljs-keyword">string</span>
|
||
|
|
namespaceSet <span class="hljs-keyword">bool</span>
|
||
|
|
resource <span class="hljs-keyword">string</span>
|
||
|
|
resourceName <span class="hljs-keyword">string</span>
|
||
|
|
subresource <span class="hljs-keyword">string</span>
|
||
|
|
timeout time.Duration
|
||
|
|
|
||
|
|
<span class="hljs-comment">// output</span>
|
||
|
|
err error
|
||
|
|
body io.Reader
|
||
|
|
|
||
|
|
<span class="hljs-comment">// This is only used for per-request timeouts, deadlines, and cancellations.</span>
|
||
|
|
ctx context.Context
|
||
|
|
|
||
|
|
backoffMgr BackoffManager
|
||
|
|
throttle flowcontrol.RateLimiter
|
||
|
|
}
|
||
|
|
</code></pre>
|
||
|
|
<h2 id="测试">测试</h2>
|
||
|
|
<p>分别测试使用 ConfigMap 挂载 Env 和 Volume 的情况。</p>
|
||
|
|
<h3 id="更新使用configmap挂载的env">更新使用ConfigMap挂载的Env</h3>
|
||
|
|
<p>使用下面的配置创建 nginx 容器测试更新 ConfigMap 后容器内的环境变量是否也跟着更新。</p>
|
||
|
|
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> extensions/v1beta1
|
||
|
|
<span class="hljs-attr">kind:</span> Deployment
|
||
|
|
<span class="hljs-attr">metadata:</span>
|
||
|
|
<span class="hljs-attr"> name:</span> my-nginx
|
||
|
|
<span class="hljs-attr">spec:</span>
|
||
|
|
<span class="hljs-attr"> replicas:</span> <span class="hljs-number">1</span>
|
||
|
|
<span class="hljs-attr"> template:</span>
|
||
|
|
<span class="hljs-attr"> metadata:</span>
|
||
|
|
<span class="hljs-attr"> labels:</span>
|
||
|
|
<span class="hljs-attr"> run:</span> my-nginx
|
||
|
|
<span class="hljs-attr"> spec:</span>
|
||
|
|
<span class="hljs-attr"> containers:</span>
|
||
|
|
<span class="hljs-attr"> - name:</span> my-nginx
|
||
|
|
<span class="hljs-attr"> image:</span> sz-pg-oam-docker-hub<span class="hljs-bullet">-001.</span>tendcloud.com/library/nginx:<span class="hljs-number">1.9</span>
|
||
|
|
<span class="hljs-attr"> ports:</span>
|
||
|
|
<span class="hljs-attr"> - containerPort:</span> <span class="hljs-number">80</span>
|
||
|
|
<span class="hljs-attr"> envFrom:</span>
|
||
|
|
<span class="hljs-attr"> - configMapRef:</span>
|
||
|
|
<span class="hljs-attr"> name:</span> env-config
|
||
|
|
<span class="hljs-meta">---</span>
|
||
|
|
<span class="hljs-attr">apiVersion:</span> v1
|
||
|
|
<span class="hljs-attr">kind:</span> ConfigMap
|
||
|
|
<span class="hljs-attr">metadata:</span>
|
||
|
|
<span class="hljs-attr"> name:</span> env-config
|
||
|
|
<span class="hljs-attr"> namespace:</span> default
|
||
|
|
<span class="hljs-attr">data:</span>
|
||
|
|
<span class="hljs-attr"> log_level:</span> INFO
|
||
|
|
</code></pre>
|
||
|
|
<p>获取环境变量的值</p>
|
||
|
|
<pre><code class="lang-bash">$ kubectl <span class="hljs-built_in">exec</span> `kubectl get pods <span class="hljs-_">-l</span> run=my-nginx -o=name|cut <span class="hljs-_">-d</span> <span class="hljs-string">"/"</span> <span class="hljs-_">-f</span>2` env|grep <span class="hljs-built_in">log</span>_level
|
||
|
|
<span class="hljs-built_in">log</span>_level=INFO
|
||
|
|
</code></pre>
|
||
|
|
<p>修改 ConfigMap</p>
|
||
|
|
<pre><code class="lang-bash">$ kubectl edit configmap env-config
|
||
|
|
</code></pre>
|
||
|
|
<p>修改 <code>log_level</code> 的值为 <code>DEBUG</code>。</p>
|
||
|
|
<p>再次查看环境变量的值。</p>
|
||
|
|
<pre><code class="lang-bash">$ kubectl <span class="hljs-built_in">exec</span> `kubectl get pods <span class="hljs-_">-l</span> run=my-nginx -o=name|cut <span class="hljs-_">-d</span> <span class="hljs-string">"/"</span> <span class="hljs-_">-f</span>2` env|grep <span class="hljs-built_in">log</span>_level
|
||
|
|
<span class="hljs-built_in">log</span>_level=INFO
|
||
|
|
</code></pre>
|
||
|
|
<p>实践证明修改 ConfigMap 无法更新容器中已注入的环境变量信息。</p>
|
||
|
|
<h3 id="更新使用configmap挂载的volume">更新使用ConfigMap挂载的Volume</h3>
|
||
|
|
<p>使用下面的配置创建 nginx 容器测试更新 ConfigMap 后容器内挂载的文件是否也跟着更新。</p>
|
||
|
|
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> extensions/v1beta1
|
||
|
|
<span class="hljs-attr">kind:</span> Deployment
|
||
|
|
<span class="hljs-attr">metadata:</span>
|
||
|
|
<span class="hljs-attr"> name:</span> my-nginx
|
||
|
|
<span class="hljs-attr">spec:</span>
|
||
|
|
<span class="hljs-attr"> replicas:</span> <span class="hljs-number">1</span>
|
||
|
|
<span class="hljs-attr"> template:</span>
|
||
|
|
<span class="hljs-attr"> metadata:</span>
|
||
|
|
<span class="hljs-attr"> labels:</span>
|
||
|
|
<span class="hljs-attr"> run:</span> my-nginx
|
||
|
|
<span class="hljs-attr"> spec:</span>
|
||
|
|
<span class="hljs-attr"> containers:</span>
|
||
|
|
<span class="hljs-attr"> - name:</span> my-nginx
|
||
|
|
<span class="hljs-attr"> image:</span> sz-pg-oam-docker-hub<span class="hljs-bullet">-001.</span>tendcloud.com/library/nginx:<span class="hljs-number">1.9</span>
|
||
|
|
<span class="hljs-attr"> ports:</span>
|
||
|
|
<span class="hljs-attr"> - containerPort:</span> <span class="hljs-number">80</span>
|
||
|
|
<span class="hljs-attr"> volumeMounts:</span>
|
||
|
|
<span class="hljs-attr"> - name:</span> config-volume
|
||
|
|
<span class="hljs-attr"> mountPath:</span> /etc/config
|
||
|
|
<span class="hljs-attr"> volumes:</span>
|
||
|
|
<span class="hljs-attr"> - name:</span> config-volume
|
||
|
|
<span class="hljs-attr"> configMap:</span>
|
||
|
|
<span class="hljs-attr"> name:</span> special-config
|
||
|
|
<span class="hljs-meta">---</span>
|
||
|
|
<span class="hljs-attr">apiVersion:</span> v1
|
||
|
|
<span class="hljs-attr">kind:</span> ConfigMap
|
||
|
|
<span class="hljs-attr">metadata:</span>
|
||
|
|
<span class="hljs-attr"> name:</span> special-config
|
||
|
|
<span class="hljs-attr"> namespace:</span> default
|
||
|
|
<span class="hljs-attr">data:</span>
|
||
|
|
<span class="hljs-attr"> log_level:</span> INFO
|
||
|
|
</code></pre>
|
||
|
|
<pre><code class="lang-bash">$ kubectl <span class="hljs-built_in">exec</span> `kubectl get pods <span class="hljs-_">-l</span> run=my-nginx -o=name|cut <span class="hljs-_">-d</span> <span class="hljs-string">"/"</span> <span class="hljs-_">-f</span>2` cat /tmp/<span class="hljs-built_in">log</span>_level
|
||
|
|
INFO
|
||
|
|
</code></pre>
|
||
|
|
<p>修改 ConfigMap</p>
|
||
|
|
<pre><code class="lang-bash">$ kubectl edit configmap special-config
|
||
|
|
</code></pre>
|
||
|
|
<p>修改 <code>log_level</code> 的值为 <code>DEBUG</code>。</p>
|
||
|
|
<p>等待大概10秒钟时间，再次查看环境变量的值。</p>
|
||
|
|
<pre><code class="lang-bash">$ kubectl <span class="hljs-built_in">exec</span> `kubectl get pods <span class="hljs-_">-l</span> run=my-nginx -o=name|cut <span class="hljs-_">-d</span> <span class="hljs-string">"/"</span> <span class="hljs-_">-f</span>2` cat /tmp/<span class="hljs-built_in">log</span>_level
|
||
|
|
DEBUG
|
||
|
|
</code></pre>
|
||
|
|
<p>我们可以看到使用 ConfigMap 方式挂载的 Volume 的文件中的内容已经变成了 <code>DEBUG</code>。</p>
|
||
|
|
<h2 id="总结">总结</h2>
|
||
|
|
<p>更新 ConfigMap 后：</p>
|
||
|
|
<ul>
|
||
|
|
<li>使用该 ConfigMap 挂载的 Env <strong>不会</strong>同步更新</li>
|
||
|
|
<li>使用该 ConfigMap 挂载的 Volume 中的数据需要一段时间（实测大概10秒）才能同步更新</li>
|
||
|
|
</ul>
|
||
|
|
<p>ENV 是在容器启动的时候注入的，启动之后 kubernetes 就不会再改变环境变量的值，且同一个 namespace 中的 pod 的环境变量是不断累加的，参考 <a href="https://jimmysong.io/posts/exploring-kubernetes-env-with-docker/" target="_blank">Kubernetes中的服务发现与docker容器间的环境变量传递源码探究</a>。为了更新容器中使用 ConfigMap 挂载的配置，可以通过滚动更新 pod 的方式来强制重新挂载 ConfigMap，也可以在更新了 ConfigMap 后，先将副本数设置为 0，然后再扩容。</p>
|
||
|
|
<h2 id="参考">参考</h2>
|
||
|
|
<ul>
|
||
|
|
<li><a href="https://acotten.com/post/kube17-security" target="_blank">Kubernetes 1.7 security in practice</a></li>
|
||
|
|
<li><a href="https://jimmysong.io/kubernetes-handbook/concepts/configmap.html" target="_blank">ConfigMap | kubernetes handbook - jimmysong.io</a></li>
|
||
|
|
<li><a href="https://jimmysong.io/kubernetes-handbook/practice/etcd-cluster-installation.html" target="_blank">创建高可用ectd集群 | Kubernetes handbook - jimmysong.io</a></li>
|
||
|
|
<li><a href="https://jimmysong.io/posts/exploring-kubernetes-env-with-docker/" target="_blank">Kubernetes中的服务发现与docker容器间的环境变量传递源码探究</a> </li>
|
||
|
|
</ul>
|
||
|
|
<footer class="page-footer"><span class="copyright">Copyright © jimmysong.io 2017 all right reserved，powered by Gitbook</span><span class="footer-modification">Updated:
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2017-11-08 19:26:57
|
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