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<title>4.1.6 部署node节点 · Kubernetes Handbook</title>
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<li class="chapter " data-level="1.1" data-path="../">
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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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2. 概念原理
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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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2.2 Objects
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</a>
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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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<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 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 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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|
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</li>
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|
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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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|
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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
|
||
|
||
</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
|
||
|
||
</a>
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|
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</li>
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|
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<li class="chapter " data-level="1.2.2.11" data-path="../concepts/replicaset.html">
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|
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<a href="../concepts/replicaset.html">
|
||
|
||
|
||
2.2.11 ReplicationController和ReplicaSet
|
||
|
||
</a>
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||
|
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||
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</li>
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<li class="chapter " data-level="1.2.2.12" data-path="../concepts/job.html">
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<a href="../concepts/job.html">
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||
|
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2.2.12 Job
|
||
|
||
</a>
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||
|
||
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||
</li>
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|
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<li class="chapter " data-level="1.2.2.13" data-path="../concepts/cronjob.html">
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||
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||
<a href="../concepts/cronjob.html">
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||
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||
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2.2.13 CronJob
|
||
|
||
</a>
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||
|
||
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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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||
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<a href="../concepts/ingress.html">
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||
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||
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2.2.14 Ingress
|
||
|
||
</a>
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||
|
||
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||
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||
</li>
|
||
|
||
<li class="chapter " data-level="1.2.2.15" data-path="../concepts/configmap.html">
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||
|
||
<a href="../concepts/configmap.html">
|
||
|
||
|
||
2.2.15 ConfigMap
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.2.2.16" data-path="../concepts/horizontal-pod-autoscaling.html">
|
||
|
||
<a href="../concepts/horizontal-pod-autoscaling.html">
|
||
|
||
|
||
2.2.16 Horizontal Pod Autoscaling
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<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
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<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">
|
||
|
||
|
||
2.2.18 垃圾收集
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.2.2.19" data-path="../concepts/network-policy.html">
|
||
|
||
<a href="../concepts/network-policy.html">
|
||
|
||
|
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2.2.19 NetworkPolicy
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
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|
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</li>
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||
|
||
|
||
</ul>
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||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3" data-path="../guide/">
|
||
|
||
<a href="../guide/">
|
||
|
||
|
||
3. 用户指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.3.1" data-path="../guide/resource-configuration.html">
|
||
|
||
<a href="../guide/resource-configuration.html">
|
||
|
||
|
||
3.1 资源配置
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.3.1.1" 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="1.3.1.2" 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>
|
||
|
||
|
||
</ul>
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||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.2" 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="1.3.2.1" data-path="../guide/using-kubectl.html">
|
||
|
||
<a href="../guide/using-kubectl.html">
|
||
|
||
|
||
3.2.1 使用kubectl
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.2.2" data-path="../guide/docker-cli-to-kubectl.html">
|
||
|
||
<a href="../guide/docker-cli-to-kubectl.html">
|
||
|
||
|
||
3.2.2 docker用户过度到kubectl命令行指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3" 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="1.3.3.1" 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="1.3.3.2" 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="1.3.3.3" data-path="../guide/tls-bootstrapping.html">
|
||
|
||
<a href="../guide/tls-bootstrapping.html">
|
||
|
||
|
||
3.3.3 TLS bootstrap
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3.4" data-path="../guide/kubectl-user-authentication-authorization.html">
|
||
|
||
<a href="../guide/kubectl-user-authentication-authorization.html">
|
||
|
||
|
||
3.3.4 kubectl的用户认证授权
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.3.3.5" 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="1.3.3.6" 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="1.3.4" 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="1.3.4.1" 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="1.3.4.2" 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="1.3.4.3" 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="./">
|
||
|
||
<a href="./">
|
||
|
||
|
||
4. 最佳实践
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.1" data-path="install-kbernetes1.6-on-centos.html">
|
||
|
||
<a href="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="create-tls-and-secret-key.html">
|
||
|
||
<a href="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="create-kubeconfig.html">
|
||
|
||
<a href="create-kubeconfig.html">
|
||
|
||
|
||
4.1.2 创建kubeconfig文件
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.3" data-path="etcd-cluster-installation.html">
|
||
|
||
<a href="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="kubectl-installation.html">
|
||
|
||
<a href="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="master-installation.html">
|
||
|
||
<a href="master-installation.html">
|
||
|
||
|
||
4.1.5 部署master节点
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter active" data-level="1.4.1.6" data-path="node-installation.html">
|
||
|
||
<a href="node-installation.html">
|
||
|
||
|
||
4.1.6 部署node节点
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.1.7" data-path="kubedns-addon-installation.html">
|
||
|
||
<a href="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="dashboard-addon-installation.html">
|
||
|
||
<a href="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="heapster-addon-installation.html">
|
||
|
||
<a href="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="efk-addon-installation.html">
|
||
|
||
<a href="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="service-discovery-and-loadbalancing.html">
|
||
|
||
<a href="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="traefik-ingress-installation.html">
|
||
|
||
<a href="traefik-ingress-installation.html">
|
||
|
||
|
||
4.2.1 安装Traefik ingress
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.2.2" data-path="distributed-load-test.html">
|
||
|
||
<a href="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="network-and-cluster-perfermance-test.html">
|
||
|
||
<a href="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="edge-node-configuration.html">
|
||
|
||
<a href="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="operation.html">
|
||
|
||
<a href="operation.html">
|
||
|
||
|
||
4.3 运维管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.3.1" data-path="service-rolling-update.html">
|
||
|
||
<a href="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="app-log-collection.html">
|
||
|
||
<a href="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="configuration-best-practice.html">
|
||
|
||
<a href="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="monitor.html">
|
||
|
||
<a href="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="jenkins-ci-cd.html">
|
||
|
||
<a href="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="data-persistence-problem.html">
|
||
|
||
<a href="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="manage-compute-resources-container.html">
|
||
|
||
<a href="manage-compute-resources-container.html">
|
||
|
||
|
||
4.3.7 管理容器的计算资源
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.4.4" data-path="storage.html">
|
||
|
||
<a href="storage.html">
|
||
|
||
|
||
4.4 存储管理
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.1" data-path="glusterfs.html">
|
||
|
||
<a href="glusterfs.html">
|
||
|
||
|
||
4.4.1 GlusterFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.1.1" data-path="using-glusterfs-for-persistent-storage.html">
|
||
|
||
<a href="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="storage-for-containers-using-glusterfs-with-openshift.html">
|
||
|
||
<a href="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="cephfs.html">
|
||
|
||
<a href="cephfs.html">
|
||
|
||
|
||
4.4.2 CephFS
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.4.4.2.1" data-path="using-ceph-for-persistent-storage.html">
|
||
|
||
<a href="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="../usecases/">
|
||
|
||
<a href="../usecases/">
|
||
|
||
|
||
5. 领域应用
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.1" 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="1.5.1.1" data-path="../usecases/istio.html">
|
||
|
||
<a href="../usecases/istio.html">
|
||
|
||
|
||
5.1.1 Istio
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.1.1.1" data-path="../usecases/istio-installation.html">
|
||
|
||
<a href="../usecases/istio-installation.html">
|
||
|
||
|
||
5.1.1.1 安装istio
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.1.1.2" 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>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.1.2" data-path="../usecases/linkerd.html">
|
||
|
||
<a href="../usecases/linkerd.html">
|
||
|
||
|
||
5.1.2 Linkerd
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.5.1.2.1" 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>
|
||
|
||
<li class="chapter " data-level="1.5.1.3" data-path="../usecases/service-discovery-in-microservices.html">
|
||
|
||
<a href="../usecases/service-discovery-in-microservices.html">
|
||
|
||
|
||
5.1.3 微服务中的服务发现
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.5.2" 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="1.5.2.1" 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="1.5.2.2" 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="1.5.3" data-path="../usecases/serverless.html">
|
||
|
||
<a href="../usecases/serverless.html">
|
||
|
||
|
||
5.3 Serverless架构
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.6" data-path="../develop/">
|
||
|
||
<a href="../develop/">
|
||
|
||
|
||
6. 开发指南
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.6.1" 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="1.6.2" 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="1.6.3" 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="1.6.4" data-path="../develop/contribute.html">
|
||
|
||
<a href="../develop/contribute.html">
|
||
|
||
|
||
6.4 社区贡献
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.7" data-path="../appendix/">
|
||
|
||
<a href="../appendix/">
|
||
|
||
|
||
7. 附录
|
||
|
||
</a>
|
||
|
||
|
||
|
||
<ul class="articles">
|
||
|
||
|
||
<li class="chapter " data-level="1.7.1" data-path="../appendix/docker-best-practice.html">
|
||
|
||
<a href="../appendix/docker-best-practice.html">
|
||
|
||
|
||
7.1 Docker最佳实践
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.7.2" data-path="../appendix/issues.html">
|
||
|
||
<a href="../appendix/issues.html">
|
||
|
||
|
||
7.2 问题记录
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
<li class="chapter " data-level="1.7.3" data-path="../appendix/tricks.html">
|
||
|
||
<a href="../appendix/tricks.html">
|
||
|
||
|
||
7.3 使用技巧
|
||
|
||
</a>
|
||
|
||
|
||
|
||
</li>
|
||
|
||
|
||
</ul>
|
||
|
||
</li>
|
||
|
||
|
||
|
||
|
||
<li class="divider"></li>
|
||
|
||
<li>
|
||
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
|
||
本書使用 GitBook 釋出
|
||
</a>
|
||
</li>
|
||
</ul>
|
||
|
||
|
||
</nav>
|
||
|
||
|
||
</div>
|
||
|
||
<div class="book-body">
|
||
|
||
<div class="body-inner">
|
||
|
||
|
||
|
||
<div class="book-header" role="navigation">
|
||
|
||
|
||
<!-- Title -->
|
||
<h1>
|
||
<i class="fa fa-circle-o-notch fa-spin"></i>
|
||
<a href=".." >4.1.6 部署node节点</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="部署node节点">部署node节点</h1>
|
||
<p>kubernetes node 节点包含如下组件：</p>
|
||
<ul>
|
||
<li>Flanneld：参考我之前写的文章<a href="http://rootsongjc.github.io/blogs/kubernetes-network-config/" target="_blank">Kubernetes基于Flannel的网络配置</a>，之前没有配置TLS，现在需要在serivce配置文件中增加TLS配置。</li>
|
||
<li>Docker1.12.5：docker的安装很简单，这里也不说了。</li>
|
||
<li>kubelet</li>
|
||
<li>kube-proxy</li>
|
||
</ul>
|
||
<p>下面着重讲<code>kubelet</code>和<code>kube-proxy</code>的安装，同时还要将之前安装的flannel集成TLS验证。</p>
|
||
<p><strong>注意</strong>：每台 node 上都需要安装 flannel，master 节点上可以不必安装。</p>
|
||
<h2 id="目录和文件">目录和文件</h2>
|
||
<p>我们再检查一下三个节点上，经过前几步操作生成的配置文件。</p>
|
||
<pre><code class="lang-bash">$ ls /etc/kubernetes/ssl
|
||
admin-key.pem admin.pem ca-key.pem ca.pem kube-proxy-key.pem kube-proxy.pem kubernetes-key.pem kubernetes.pem
|
||
$ ls /etc/kubernetes/
|
||
apiserver bootstrap.kubeconfig config controller-manager kubelet kube-proxy.kubeconfig proxy scheduler ssl token.csv
|
||
</code></pre>
|
||
<h2 id="配置flanneld">配置Flanneld</h2>
|
||
<p>参考我之前写的文章<a href="http://rootsongjc.github.io/blogs/kubernetes-network-config/" target="_blank">Kubernetes基于Flannel的网络配置</a>，之前没有配置TLS，现在需要在serivce配置文件中增加TLS配置。</p>
|
||
<p>直接使用yum安装flanneld即可。</p>
|
||
<pre><code class="lang-shell">yum install -y flannel
|
||
</code></pre>
|
||
<p>service配置文件<code>/usr/lib/systemd/system/flanneld.service</code>。</p>
|
||
<pre><code class="lang-ini">[Unit]
|
||
Description=Flanneld overlay address etcd agent
|
||
After=network.target
|
||
After=network-online.target
|
||
Wants=network-online.target
|
||
After=etcd.service
|
||
Before=docker.service
|
||
|
||
[Service]
|
||
Type=notify
|
||
EnvironmentFile=/etc/sysconfig/flanneld
|
||
EnvironmentFile=-/etc/sysconfig/docker-network
|
||
ExecStart=/usr/bin/flanneld-start \
|
||
-etcd-endpoints=${ETCD_ENDPOINTS} \
|
||
-etcd-prefix=${ETCD_PREFIX} \
|
||
$FLANNEL_OPTIONS
|
||
ExecStartPost=/usr/libexec/flannel/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/docker
|
||
Restart=on-failure
|
||
|
||
[Install]
|
||
WantedBy=multi-user.target
|
||
RequiredBy=docker.service
|
||
</code></pre>
|
||
<p><code>/etc/sysconfig/flanneld</code>配置文件。</p>
|
||
<pre><code class="lang-ini"><span class="hljs-comment"># Flanneld configuration options </span>
|
||
|
||
<span class="hljs-comment"># etcd url location. Point this to the server where etcd runs</span>
|
||
<span class="hljs-attr">ETCD_ENDPOINTS</span>=<span class="hljs-string">"https://172.20.0.113:2379,https://172.20.0.114:2379,https://172.20.0.115:2379"</span>
|
||
|
||
<span class="hljs-comment"># etcd config key. This is the configuration key that flannel queries</span>
|
||
<span class="hljs-comment"># For address range assignment</span>
|
||
<span class="hljs-attr">ETCD_PREFIX</span>=<span class="hljs-string">"/kube-centos/network"</span>
|
||
|
||
<span class="hljs-comment"># Any additional options that you want to pass</span>
|
||
<span class="hljs-attr">FLANNEL_OPTIONS</span>=<span class="hljs-string">"-etcd-cafile=/etc/kubernetes/ssl/ca.pem -etcd-certfile=/etc/kubernetes/ssl/kubernetes.pem -etcd-keyfile=/etc/kubernetes/ssl/kubernetes-key.pem"</span>
|
||
</code></pre>
|
||
<p>在FLANNEL_OPTIONS中增加TLS的配置。</p>
|
||
<p><strong>在etcd中创建网络配置</strong></p>
|
||
<p>执行下面的命令为docker分配IP地址段。</p>
|
||
<pre><code class="lang-shell">etcdctl --endpoints=https://172.20.0.113:2379,https://172.20.0.114:2379,https://172.20.0.115:2379 \
|
||
--ca-file=/etc/kubernetes/ssl/ca.pem \
|
||
--cert-file=/etc/kubernetes/ssl/kubernetes.pem \
|
||
--key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
|
||
mkdir /kube-centos/network
|
||
etcdctl --endpoints=https://172.20.0.113:2379,https://172.20.0.114:2379,https://172.20.0.115:2379 \
|
||
--ca-file=/etc/kubernetes/ssl/ca.pem \
|
||
--cert-file=/etc/kubernetes/ssl/kubernetes.pem \
|
||
--key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
|
||
mk /kube-centos/network/config '{"Network":"172.30.0.0/16","SubnetLen":24,"Backend":{"Type":"vxlan"}}'
|
||
</code></pre>
|
||
<p>如果你要使用<code>host-gw</code>模式，可以直接将vxlan改成<code>host-gw</code>即可。</p>
|
||
<p><strong>配置Docker</strong></p>
|
||
<p>Flannel的<a href="https://github.com/coreos/flannel/blob/master/Documentation/running.md" target="_blank">文档</a>中有写<strong>Docker Integration</strong>：</p>
|
||
<p>Docker daemon accepts <code>--bip</code> argument to configure the subnet of the docker0 bridge. It also accepts <code>--mtu</code> to set the MTU for docker0 and veth devices that it will be creating. Since flannel writes out the acquired subnet and MTU values into a file, the script starting Docker can source in the values and pass them to Docker daemon:</p>
|
||
<pre><code>source /run/flannel/subnet.env
|
||
docker daemon --bip=${FLANNEL_SUBNET} --mtu=${FLANNEL_MTU} &
|
||
</code></pre><p>Systemd users can use <code>EnvironmentFile</code> directive in the .service file to pull in <code>/run/flannel/subnet.env</code></p>
|
||
<p>如果你不是使用yum安装的flanneld，那么需要下载flannel github release中的tar包，解压后会获得一个<strong>mk-docker-opts.sh</strong>文件。</p>
|
||
<p>这个文件是用来<code>Generate Docker daemon options based on flannel env file</code>。</p>
|
||
<p>执行<code>./mk-docker-opts.sh -i</code>将会生成如下两个文件环境变量文件。</p>
|
||
<p>/run/flannel/subnet.env</p>
|
||
<pre><code>FLANNEL_NETWORK=172.30.0.0/16
|
||
FLANNEL_SUBNET=172.30.46.1/24
|
||
FLANNEL_MTU=1450
|
||
FLANNEL_IPMASQ=false
|
||
</code></pre><p>/run/docker_opts.env</p>
|
||
<pre><code>DOCKER_OPT_BIP="--bip=172.30.46.1/24"
|
||
DOCKER_OPT_IPMASQ="--ip-masq=true"
|
||
DOCKER_OPT_MTU="--mtu=1450"
|
||
</code></pre><p><strong>设置docker0网桥的IP地址</strong></p>
|
||
<pre><code class="lang-shell">source /run/flannel/subnet.env
|
||
ifconfig docker0 $FLANNEL_SUBNET
|
||
</code></pre>
|
||
<p>这样docker0和flannel网桥会在同一个子网中，如</p>
|
||
<pre><code>6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN
|
||
link/ether 02:42:da:bf:83:a2 brd ff:ff:ff:ff:ff:ff
|
||
inet 172.30.38.1/24 brd 172.30.38.255 scope global docker0
|
||
valid_lft forever preferred_lft forever
|
||
7: flannel.1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UNKNOWN
|
||
link/ether 9a:29:46:61:03:44 brd ff:ff:ff:ff:ff:ff
|
||
inet 172.30.38.0/32 scope global flannel.1
|
||
valid_lft forever preferred_lft forever
|
||
</code></pre><p>同时在 docker 的配置文件 <a href="../systemd/docker.service">docker.service</a> 中增加环境变量配置：</p>
|
||
<pre><code class="lang-ini"><span class="hljs-attr">EnvironmentFile</span>=-/run/flannel/docker
|
||
<span class="hljs-attr">EnvironmentFile</span>=-/run/docker_opts.env
|
||
<span class="hljs-attr">EnvironmentFile</span>=-/run/flannel/subnet.env
|
||
</code></pre>
|
||
<p>防止主机重启后 docker 自动重启时加载不到该上述环境变量。</p>
|
||
<p><strong>启动docker</strong></p>
|
||
<p>重启了docker后还要重启kubelet，这时又遇到问题，kubelet启动失败。报错：</p>
|
||
<pre><code>Mar 31 16:44:41 sz-pg-oam-docker-test-002.tendcloud.com kubelet[81047]: error: failed to run Kubelet: failed to create kubelet: misconfiguration: kubelet cgroup driver: "cgroupfs" is different from docker cgroup driver: "systemd"
|
||
</code></pre><p>这是kubelet与docker的<strong>cgroup driver</strong>不一致导致的，kubelet启动的时候有个<code>—cgroup-driver</code>参数可以指定为"cgroupfs"或者“systemd”。</p>
|
||
<pre><code>--cgroup-driver string Driver that the kubelet uses to manipulate cgroups on the host. Possible values: 'cgroupfs', 'systemd' (default "cgroupfs")
|
||
</code></pre><p><strong>启动flannel</strong></p>
|
||
<pre><code class="lang-shell">systemctl daemon-reload
|
||
systemctl start flanneld
|
||
systemctl status flanneld
|
||
</code></pre>
|
||
<p>现在查询etcd中的内容可以看到：</p>
|
||
<pre><code class="lang-bash"><span class="hljs-variable">$etcdctl</span> --endpoints=<span class="hljs-variable">${ETCD_ENDPOINTS}</span> \
|
||
--ca-file=/etc/kubernetes/ssl/ca.pem \
|
||
--cert-file=/etc/kubernetes/ssl/kubernetes.pem \
|
||
--key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
|
||
ls /kube-centos/network/subnets
|
||
/kube-centos/network/subnets/172.30.14.0-24
|
||
/kube-centos/network/subnets/172.30.38.0-24
|
||
/kube-centos/network/subnets/172.30.46.0-24
|
||
<span class="hljs-variable">$etcdctl</span> --endpoints=<span class="hljs-variable">${ETCD_ENDPOINTS}</span> \
|
||
--ca-file=/etc/kubernetes/ssl/ca.pem \
|
||
--cert-file=/etc/kubernetes/ssl/kubernetes.pem \
|
||
--key-file=/etc/kubernetes/ssl/kubernetes-key.pem \
|
||
get /kube-centos/network/config
|
||
{ <span class="hljs-string">"Network"</span>: <span class="hljs-string">"172.30.0.0/16"</span>, <span class="hljs-string">"SubnetLen"</span>: 24, <span class="hljs-string">"Backend"</span>: { <span class="hljs-string">"Type"</span>: <span class="hljs-string">"vxlan"</span> } }
|
||
<span class="hljs-variable">$etcdctl</span> get /kube-centos/network/subnets/172.30.14.0-24
|
||
{<span class="hljs-string">"PublicIP"</span>:<span class="hljs-string">"172.20.0.114"</span>,<span class="hljs-string">"BackendType"</span>:<span class="hljs-string">"vxlan"</span>,<span class="hljs-string">"BackendData"</span>:{<span class="hljs-string">"VtepMAC"</span>:<span class="hljs-string">"56:27:7d:1c:08:22"</span>}}
|
||
<span class="hljs-variable">$etcdctl</span> get /kube-centos/network/subnets/172.30.38.0-24
|
||
{<span class="hljs-string">"PublicIP"</span>:<span class="hljs-string">"172.20.0.115"</span>,<span class="hljs-string">"BackendType"</span>:<span class="hljs-string">"vxlan"</span>,<span class="hljs-string">"BackendData"</span>:{<span class="hljs-string">"VtepMAC"</span>:<span class="hljs-string">"12:82:83:59:cf:b8"</span>}}
|
||
<span class="hljs-variable">$etcdctl</span> get /kube-centos/network/subnets/172.30.46.0-24
|
||
{<span class="hljs-string">"PublicIP"</span>:<span class="hljs-string">"172.20.0.113"</span>,<span class="hljs-string">"BackendType"</span>:<span class="hljs-string">"vxlan"</span>,<span class="hljs-string">"BackendData"</span>:{<span class="hljs-string">"VtepMAC"</span>:<span class="hljs-string">"e6:b2:fd:f6:66:96"</span>}}
|
||
</code></pre>
|
||
<h2 id="安装和配置-kubelet">安装和配置 kubelet</h2>
|
||
<p>kubelet 启动时向 kube-apiserver 发送 TLS bootstrapping 请求，需要先将 bootstrap token 文件中的 kubelet-bootstrap 用户赋予 system:node-bootstrapper cluster 角色(role)，
|
||
然后 kubelet 才能有权限创建认证请求(certificate signing requests)：</p>
|
||
<pre><code class="lang-bash"><span class="hljs-built_in">cd</span> /etc/kubernetes
|
||
kubectl create clusterrolebinding kubelet-bootstrap \
|
||
--clusterrole=system:node-bootstrapper \
|
||
--user=kubelet-bootstrap
|
||
</code></pre>
|
||
<ul>
|
||
<li><code>--user=kubelet-bootstrap</code> 是在 <code>/etc/kubernetes/token.csv</code> 文件中指定的用户名，同时也写入了 <code>/etc/kubernetes/bootstrap.kubeconfig</code> 文件；</li>
|
||
</ul>
|
||
<h3 id="下载最新的-kubelet-和-kube-proxy-二进制文件">下载最新的 kubelet 和 kube-proxy 二进制文件</h3>
|
||
<pre><code class="lang-bash">wget https://dl.k8s.io/v1.6.0/kubernetes-server-linux-amd64.tar.gz
|
||
tar -xzvf kubernetes-server-linux-amd64.tar.gz
|
||
<span class="hljs-built_in">cd</span> kubernetes
|
||
tar -xzvf kubernetes-src.tar.gz
|
||
cp -r ./server/bin/{kube-proxy,kubelet} /usr/<span class="hljs-built_in">local</span>/bin/
|
||
</code></pre>
|
||
<h3 id="创建-kubelet-的service配置文件">创建 kubelet 的service配置文件</h3>
|
||
<p>文件位置<code>/usr/lib/systemd/system/kubelet.service</code>。</p>
|
||
<pre><code class="lang-ini">[Unit]
|
||
Description=Kubernetes Kubelet Server
|
||
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
|
||
After=docker.service
|
||
Requires=docker.service
|
||
|
||
[Service]
|
||
WorkingDirectory=/var/lib/kubelet
|
||
EnvironmentFile=-/etc/kubernetes/config
|
||
EnvironmentFile=-/etc/kubernetes/kubelet
|
||
ExecStart=/usr/local/bin/kubelet \
|
||
$KUBE_LOGTOSTDERR \
|
||
$KUBE_LOG_LEVEL \
|
||
$KUBELET_API_SERVER \
|
||
$KUBELET_ADDRESS \
|
||
$KUBELET_PORT \
|
||
$KUBELET_HOSTNAME \
|
||
$KUBE_ALLOW_PRIV \
|
||
$KUBELET_POD_INFRA_CONTAINER \
|
||
$KUBELET_ARGS
|
||
Restart=on-failure
|
||
|
||
[Install]
|
||
WantedBy=multi-user.target
|
||
</code></pre>
|
||
<p>kubelet的配置文件<code>/etc/kubernetes/kubelet</code>。其中的IP地址更改为你的每台node节点的IP地址。</p>
|
||
<p>注意：<code>/var/lib/kubelet</code>需要手动创建。</p>
|
||
<pre><code class="lang-bash"><span class="hljs-comment">###</span>
|
||
<span class="hljs-comment">## kubernetes kubelet (minion) config</span>
|
||
<span class="hljs-comment">#</span>
|
||
<span class="hljs-comment">## The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)</span>
|
||
KUBELET_ADDRESS=<span class="hljs-string">"--address=172.20.0.113"</span>
|
||
<span class="hljs-comment">#</span>
|
||
<span class="hljs-comment">## The port for the info server to serve on</span>
|
||
<span class="hljs-comment">#KUBELET_PORT="--port=10250"</span>
|
||
<span class="hljs-comment">#</span>
|
||
<span class="hljs-comment">## You may leave this blank to use the actual hostname</span>
|
||
KUBELET_HOSTNAME=<span class="hljs-string">"--hostname-override=172.20.0.113"</span>
|
||
<span class="hljs-comment">#</span>
|
||
<span class="hljs-comment">## location of the api-server</span>
|
||
KUBELET_API_SERVER=<span class="hljs-string">"--api-servers=http://172.20.0.113:8080"</span>
|
||
<span class="hljs-comment">#</span>
|
||
<span class="hljs-comment">## pod infrastructure container</span>
|
||
KUBELET_POD_INFRA_CONTAINER=<span class="hljs-string">"--pod-infra-container-image=sz-pg-oam-docker-hub-001.tendcloud.com/library/pod-infrastructure:rhel7"</span>
|
||
<span class="hljs-comment">#</span>
|
||
<span class="hljs-comment">## Add your own!</span>
|
||
KUBELET_ARGS=<span class="hljs-string">"--cgroup-driver=systemd --cluster-dns=10.254.0.2 --experimental-bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig --kubeconfig=/etc/kubernetes/kubelet.kubeconfig --require-kubeconfig --cert-dir=/etc/kubernetes/ssl --cluster-domain=cluster.local --hairpin-mode promiscuous-bridge --serialize-image-pulls=false"</span>
|
||
</code></pre>
|
||
<ul>
|
||
<li><code>--address</code> 不能设置为 <code>127.0.0.1</code>，否则后续 Pods 访问 kubelet 的 API 接口时会失败，因为 Pods 访问的 <code>127.0.0.1</code> 指向自己而不是 kubelet；</li>
|
||
<li>如果设置了 <code>--hostname-override</code> 选项，则 <code>kube-proxy</code> 也需要设置该选项，否则会出现找不到 Node 的情况；</li>
|
||
<li><code>"--cgroup-driver</code> 配置成 <code>systemd</code>，不要使用<code>cgroup</code>，否则在 CentOS 系统中 kubelet 讲启动失败。</li>
|
||
<li><code>--experimental-bootstrap-kubeconfig</code> 指向 bootstrap kubeconfig 文件，kubelet 使用该文件中的用户名和 token 向 kube-apiserver 发送 TLS Bootstrapping 请求；</li>
|
||
<li>管理员通过了 CSR 请求后，kubelet 自动在 <code>--cert-dir</code> 目录创建证书和私钥文件(<code>kubelet-client.crt</code> 和 <code>kubelet-client.key</code>)，然后写入 <code>--kubeconfig</code> 文件；</li>
|
||
<li>建议在 <code>--kubeconfig</code> 配置文件中指定 <code>kube-apiserver</code> 地址，如果未指定 <code>--api-servers</code> 选项，则必须指定 <code>--require-kubeconfig</code> 选项后才从配置文件中读取 kube-apiserver 的地址，否则 kubelet 启动后将找不到 kube-apiserver (日志中提示未找到 API Server），<code>kubectl get nodes</code> 不会返回对应的 Node 信息;</li>
|
||
<li><code>--cluster-dns</code> 指定 kubedns 的 Service IP(可以先分配，后续创建 kubedns 服务时指定该 IP)，<code>--cluster-domain</code> 指定域名后缀，这两个参数同时指定后才会生效；</li>
|
||
<li><code>--cluster-domain</code> 指定 pod 启动时 <code>/etc/resolve.conf</code> 文件中的 <code>search domain</code> ，起初我们将其配置成了 <code>cluster.local.</code>，这样在解析 service 的 DNS 名称时是正常的，可是在解析 headless service 中的 FQDN pod name 的时候却错误，因此我们将其修改为 <code>cluster.local</code>，去掉嘴后面的 ”点号“ 就可以解决该问题，关于 kubernetes 中的域名/服务名称解析请参见我的另一篇文章。</li>
|
||
<li><code>--kubeconfig=/etc/kubernetes/kubelet.kubeconfig</code>中指定的<code>kubelet.kubeconfig</code>文件在第一次启动kubelet之前并不存在，请看下文，当通过CSR请求后会自动生成<code>kubelet.kubeconfig</code>文件，如果你的节点上已经生成了<code>~/.kube/config</code>文件，你可以将该文件拷贝到该路径下，并重命名为<code>kubelet.kubeconfig</code>，所有node节点可以共用同一个kubelet.kubeconfig文件，这样新添加的节点就不需要再创建CSR请求就能自动添加到kubernetes集群中。同样，在任意能够访问到kubernetes集群的主机上使用<code>kubectl --kubeconfig</code>命令操作集群时，只要使用<code>~/.kube/config</code>文件就可以通过权限认证，因为这里面已经有认证信息并认为你是admin用户，对集群拥有所有权限。</li>
|
||
<li><code>KUBELET_POD_INFRA_CONTAINER</code> 是基础镜像容器，这里我用的是私有镜像仓库地址，<strong>大家部署的时候需要修改为自己的镜像</strong>。</li>
|
||
</ul>
|
||
<p>完整 unit 见 <a href="../systemd/kubelet.service">kubelet.service</a></p>
|
||
<h3 id="启动kublet">启动kublet</h3>
|
||
<pre><code class="lang-bash">systemctl daemon-reload
|
||
systemctl <span class="hljs-built_in">enable</span> kubelet
|
||
systemctl start kubelet
|
||
systemctl status kubelet
|
||
</code></pre>
|
||
<h3 id="通过-kublet-的-tls-证书请求">通过 kublet 的 TLS 证书请求</h3>
|
||
<p>kubelet 首次启动时向 kube-apiserver 发送证书签名请求，必须通过后 kubernetes 系统才会将该 Node 加入到集群。</p>
|
||
<p>查看未授权的 CSR 请求</p>
|
||
<pre><code class="lang-bash">$ kubectl get csr
|
||
NAME AGE REQUESTOR CONDITION
|
||
csr-2b308 4m kubelet-bootstrap Pending
|
||
$ kubectl get nodes
|
||
No resources found.
|
||
</code></pre>
|
||
<p>通过 CSR 请求</p>
|
||
<pre><code class="lang-bash">$ kubectl certificate approve csr-2b308
|
||
certificatesigningrequest <span class="hljs-string">"csr-2b308"</span> approved
|
||
$ kubectl get nodes
|
||
NAME STATUS AGE VERSION
|
||
10.64.3.7 Ready 49m v1.6.1
|
||
</code></pre>
|
||
<p>自动生成了 kubelet kubeconfig 文件和公私钥</p>
|
||
<pre><code class="lang-bash">$ ls <span class="hljs-_">-l</span> /etc/kubernetes/kubelet.kubeconfig
|
||
-rw------- 1 root root 2284 Apr 7 02:07 /etc/kubernetes/kubelet.kubeconfig
|
||
$ ls <span class="hljs-_">-l</span> /etc/kubernetes/ssl/kubelet*
|
||
-rw-r--r-- 1 root root 1046 Apr 7 02:07 /etc/kubernetes/ssl/kubelet-client.crt
|
||
-rw------- 1 root root 227 Apr 7 02:04 /etc/kubernetes/ssl/kubelet-client.key
|
||
-rw-r--r-- 1 root root 1103 Apr 7 02:07 /etc/kubernetes/ssl/kubelet.crt
|
||
-rw------- 1 root root 1675 Apr 7 02:07 /etc/kubernetes/ssl/kubelet.key
|
||
</code></pre>
|
||
<p>注意：假如你更新kubernetes的证书，只要没有更新<code>token.csv</code>，当重启kubelet后，该node就会自动加入到kuberentes集群中，而不会重新发送<code>certificaterequest</code>，也不需要在master节点上执行<code>kubectl certificate approve</code>操作。前提是不要删除node节点上的<code>/etc/kubernetes/ssl/kubelet*</code>和<code>/etc/kubernetes/kubelet.kubeconfig</code>文件。否则kubelet启动时会提示找不到证书而失败。</p>
|
||
<h2 id="配置-kube-proxy">配置 kube-proxy</h2>
|
||
<p><strong>创建 kube-proxy 的service配置文件</strong></p>
|
||
<p>文件路径<code>/usr/lib/systemd/system/kube-proxy.service</code>。</p>
|
||
<pre><code class="lang-ini">[Unit]
|
||
Description=Kubernetes Kube-Proxy Server
|
||
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
|
||
After=network.target
|
||
|
||
[Service]
|
||
EnvironmentFile=-/etc/kubernetes/config
|
||
EnvironmentFile=-/etc/kubernetes/proxy
|
||
ExecStart=/usr/local/bin/kube-proxy \
|
||
$KUBE_LOGTOSTDERR \
|
||
$KUBE_LOG_LEVEL \
|
||
$KUBE_MASTER \
|
||
$KUBE_PROXY_ARGS
|
||
Restart=on-failure
|
||
LimitNOFILE=65536
|
||
|
||
[Install]
|
||
WantedBy=multi-user.target
|
||
</code></pre>
|
||
<p>kube-proxy配置文件<code>/etc/kubernetes/proxy</code>。</p>
|
||
<pre><code class="lang-bash"><span class="hljs-comment">###</span>
|
||
<span class="hljs-comment"># kubernetes proxy config</span>
|
||
|
||
<span class="hljs-comment"># default config should be adequate</span>
|
||
|
||
<span class="hljs-comment"># Add your own!</span>
|
||
KUBE_PROXY_ARGS=<span class="hljs-string">"--bind-address=172.20.0.113 --hostname-override=172.20.0.113 --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig --cluster-cidr=10.254.0.0/16"</span>
|
||
</code></pre>
|
||
<ul>
|
||
<li><code>--hostname-override</code> 参数值必须与 kubelet 的值一致，否则 kube-proxy 启动后会找不到该 Node，从而不会创建任何 iptables 规则；</li>
|
||
<li>kube-proxy 根据 <code>--cluster-cidr</code> 判断集群内部和外部流量，指定 <code>--cluster-cidr</code> 或 <code>--masquerade-all</code> 选项后 kube-proxy 才会对访问 Service IP 的请求做 SNAT；</li>
|
||
<li><code>--kubeconfig</code> 指定的配置文件嵌入了 kube-apiserver 的地址、用户名、证书、秘钥等请求和认证信息；</li>
|
||
<li>预定义的 RoleBinding <code>cluster-admin</code> 将User <code>system:kube-proxy</code> 与 Role <code>system:node-proxier</code> 绑定，该 Role 授予了调用 <code>kube-apiserver</code> Proxy 相关 API 的权限；</li>
|
||
</ul>
|
||
<p>完整 unit 见 <a href="../systemd/kube-proxy.service">kube-proxy.service</a></p>
|
||
<h3 id="启动-kube-proxy">启动 kube-proxy</h3>
|
||
<pre><code class="lang-bash">systemctl daemon-reload
|
||
systemctl <span class="hljs-built_in">enable</span> kube-proxy
|
||
systemctl start kube-proxy
|
||
systemctl status kube-proxy
|
||
</code></pre>
|
||
<h2 id="验证测试">验证测试</h2>
|
||
<p>我们创建一个niginx的service试一下集群是否可用。</p>
|
||
<pre><code class="lang-bash">$ kubectl run nginx --replicas=2 --labels=<span class="hljs-string">"run=load-balancer-example"</span> --image=sz-pg-oam-docker-hub-001.tendcloud.com/library/nginx:1.9 --port=80
|
||
deployment <span class="hljs-string">"nginx"</span> created
|
||
$ kubectl expose deployment nginx --type=NodePort --name=example-service
|
||
service <span class="hljs-string">"example-service"</span> exposed
|
||
$ kubectl describe svc example-service
|
||
Name: example-service
|
||
Namespace: default
|
||
Labels: run=load-balancer-example
|
||
Annotations: <none>
|
||
Selector: run=load-balancer-example
|
||
Type: NodePort
|
||
IP: 10.254.62.207
|
||
Port: <<span class="hljs-built_in">unset</span>> 80/TCP
|
||
NodePort: <<span class="hljs-built_in">unset</span>> 32724/TCP
|
||
Endpoints: 172.30.60.2:80,172.30.94.2:80
|
||
Session Affinity: None
|
||
Events: <none>
|
||
$ curl <span class="hljs-string">"10.254.62.207:80"</span>
|
||
<!DOCTYPE html>
|
||
<html>
|
||
<head>
|
||
<title>Welcome to nginx!</title>
|
||
<style>
|
||
body {
|
||
width: 35em;
|
||
margin: 0 auto;
|
||
font-family: Tahoma, Verdana, Arial, sans-serif;
|
||
}
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<h1>Welcome to nginx!</h1>
|
||
<p>If you see this page, the nginx web server is successfully installed and
|
||
working. Further configuration is required.</p>
|
||
|
||
<p>For online documentation and support please refer to
|
||
<a href=<span class="hljs-string">"http://nginx.org/"</span>>nginx.org</a>.<br/>
|
||
Commercial support is available at
|
||
<a href=<span class="hljs-string">"http://nginx.com/"</span>>nginx.com</a>.</p>
|
||
|
||
<p><em>Thank you <span class="hljs-keyword">for</span> using nginx.</em></p>
|
||
</body>
|
||
</html>
|
||
</code></pre>
|
||
<p>提示：上面的测试示例中使用的nginx是我的私有镜像仓库中的镜像<code>sz-pg-oam-docker-hub-001.tendcloud.com/library/nginx:1.9</code>，大家在测试过程中请换成自己的nginx镜像地址。</p>
|
||
<p>访问<code>172.20.0.113:32724</code>或<code>172.20.0.114:32724</code>或者<code>172.20.0.115:32724</code>都可以得到nginx的页面。</p>
|
||
<figure id="fig1.4.1.6.1"><img src="http://olz1di9xf.bkt.clouddn.com/kubernetes-installation-test-nginx.png" alt="welcome-nginx"><figcaption>Figure: welcome-nginx</figcaption></figure>
|
||
<h2 id="参考">参考</h2>
|
||
<p><a href="../guide/kubelet-authentication-authorization.html">Kubelet 的认证授权</a></p>
|
||
<footer class="page-footer-ex"> <span class="page-footer-ex-copyright"> © All Rights Reserved </span>            <span class="page-footer-ex-footer-update"> updated 2017-09-04 11:45:36 </span> </footer>
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