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<title>Init容器 · Kubernetes Handbook - jimmysong.io</title>
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<a href="https://jimmysong.io" target="_blank" class="custom-link">Jimmy Song</a>
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<li class="divider"></li>
<li class="header">前言</li>
<li class="chapter " data-level="1.1" data-path="../">
<a href="../">
<b>1.1.</b>
序言
</a>
</li>
<li class="chapter " data-level="1.2" data-path="../cloud-native/kubernetes-and-cloud-native-app-overview.html">
<a href="../cloud-native/kubernetes-and-cloud-native-app-overview.html">
<b>1.2.</b>
Kubernetes与云原生应用概览
</a>
</li>
<li class="header">概念与原理</li>
<li class="chapter " data-level="2.1" data-path="./">
<a href="./">
<b>2.1.</b>
Kubernetes架构
</a>
</li>
<li class="chapter " data-level="2.2" data-path="concepts.html">
<a href="concepts.html">
<b>2.2.</b>
设计理念
</a>
</li>
<li class="chapter " data-level="2.3" data-path="objects.html">
<a href="objects.html">
<b>2.3.</b>
资源对象与基本概念解析
</a>
<ul class="articles">
<li class="chapter " data-level="2.3.1" data-path="pod-overview.html">
<a href="pod-overview.html">
<b>2.3.1.</b>
Pod
</a>
<ul class="articles">
<li class="chapter " data-level="2.3.1.1" data-path="pod.html">
<a href="pod.html">
<b>2.3.1.1.</b>
Pod解析
</a>
</li>
<li class="chapter active" data-level="2.3.1.2" data-path="init-containers.html">
<a href="init-containers.html">
<b>2.3.1.2.</b>
Init容器
</a>
</li>
<li class="chapter " data-level="2.3.1.3" data-path="pod-security-policy.html">
<a href="pod-security-policy.html">
<b>2.3.1.3.</b>
Pod安全策略
</a>
</li>
<li class="chapter " data-level="2.3.1.4" data-path="pod-lifecycle.html">
<a href="pod-lifecycle.html">
<b>2.3.1.4.</b>
Pod的生命周期
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2.3.2" data-path="node.html">
<a href="node.html">
<b>2.3.2.</b>
Node
</a>
</li>
<li class="chapter " data-level="2.3.3" data-path="namespace.html">
<a href="namespace.html">
<b>2.3.3.</b>
Namespace
</a>
</li>
<li class="chapter " data-level="2.3.4" data-path="service.html">
<a href="service.html">
<b>2.3.4.</b>
Service
</a>
</li>
<li class="chapter " data-level="2.3.5" data-path="volume.html">
<a href="volume.html">
<b>2.3.5.</b>
Volume和Persistent Volume
</a>
</li>
<li class="chapter " data-level="2.3.6" data-path="deployment.html">
<a href="deployment.html">
<b>2.3.6.</b>
Deployment
</a>
</li>
<li class="chapter " data-level="2.3.7" data-path="secret.html">
<a href="secret.html">
<b>2.3.7.</b>
Secret
</a>
</li>
<li class="chapter " data-level="2.3.8" data-path="statefulset.html">
<a href="statefulset.html">
<b>2.3.8.</b>
StatefulSet
</a>
</li>
<li class="chapter " data-level="2.3.9" data-path="daemonset.html">
<a href="daemonset.html">
<b>2.3.9.</b>
DaemonSet
</a>
</li>
<li class="chapter " data-level="2.3.10" data-path="serviceaccount.html">
<a href="serviceaccount.html">
<b>2.3.10.</b>
ServiceAccount
</a>
</li>
<li class="chapter " data-level="2.3.11" data-path="replicaset.html">
<a href="replicaset.html">
<b>2.3.11.</b>
ReplicationController和ReplicaSet
</a>
</li>
<li class="chapter " data-level="2.3.12" data-path="job.html">
<a href="job.html">
<b>2.3.12.</b>
Job
</a>
</li>
<li class="chapter " data-level="2.3.13" data-path="cronjob.html">
<a href="cronjob.html">
<b>2.3.13.</b>
CronJob
</a>
</li>
<li class="chapter " data-level="2.3.14" data-path="ingress.html">
<a href="ingress.html">
<b>2.3.14.</b>
Ingress
</a>
</li>
<li class="chapter " data-level="2.3.15" data-path="configmap.html">
<a href="configmap.html">
<b>2.3.15.</b>
ConfigMap
</a>
<ul class="articles">
<li class="chapter " data-level="2.3.15.1" data-path="configmap-hot-update.html">
<a href="configmap-hot-update.html">
<b>2.3.15.1.</b>
ConfigMap的热更新
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2.3.16" data-path="horizontal-pod-autoscaling.html">
<a href="horizontal-pod-autoscaling.html">
<b>2.3.16.</b>
Horizontal Pod Autoscaling
</a>
</li>
<li class="chapter " data-level="2.3.17" data-path="label.html">
<a href="label.html">
<b>2.3.17.</b>
Label
</a>
</li>
<li class="chapter " data-level="2.3.18" data-path="garbage-collection.html">
<a href="garbage-collection.html">
<b>2.3.18.</b>
垃圾收集
</a>
</li>
<li class="chapter " data-level="2.3.19" data-path="network-policy.html">
<a href="network-policy.html">
<b>2.3.19.</b>
NetworkPolicy
</a>
</li>
<li class="chapter " data-level="2.3.20" data-path="annotation.html">
<a href="annotation.html">
<b>2.3.20.</b>
Annotation
</a>
</li>
</ul>
</li>
<li class="header">用户指南</li>
<li class="chapter " data-level="3.1" data-path="../guide/">
<a href="../guide/">
<b>3.1.</b>
用户指南
</a>
</li>
<li class="chapter " data-level="3.2" data-path="../guide/resource-configuration.html">
<a href="../guide/resource-configuration.html">
<b>3.2.</b>
资源对象配置
</a>
<ul class="articles">
<li class="chapter " data-level="3.2.1" data-path="../guide/configure-liveness-readiness-probes.html">
<a href="../guide/configure-liveness-readiness-probes.html">
<b>3.2.1.</b>
配置Pod的liveness和readiness探针
</a>
</li>
<li class="chapter " data-level="3.2.2" data-path="../guide/configure-pod-service-account.html">
<a href="../guide/configure-pod-service-account.html">
<b>3.2.2.</b>
配置Pod的Service Account
</a>
</li>
<li class="chapter " data-level="3.2.3" data-path="../guide/secret-configuration.html">
<a href="../guide/secret-configuration.html">
<b>3.2.3.</b>
Secret配置
</a>
</li>
<li class="chapter " data-level="3.2.4" data-path="../guide/resource-quota-management.html">
<a href="../guide/resource-quota-management.html">
<b>3.2.4.</b>
管理namespace中的资源配额
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3.3" data-path="../guide/command-usage.html">
<a href="../guide/command-usage.html">
<b>3.3.</b>
命令使用
</a>
<ul class="articles">
<li class="chapter " data-level="3.3.1" data-path="../guide/docker-cli-to-kubectl.html">
<a href="../guide/docker-cli-to-kubectl.html">
<b>3.3.1.</b>
docker用户过度到kubectl命令行指南
</a>
</li>
<li class="chapter " data-level="3.3.2" data-path="../guide/using-kubectl.html">
<a href="../guide/using-kubectl.html">
<b>3.3.2.</b>
kubectl命令概览
</a>
</li>
<li class="chapter " data-level="3.3.3" data-path="../guide/kubectl-cheatsheet.html">
<a href="../guide/kubectl-cheatsheet.html">
<b>3.3.3.</b>
kubectl命令技巧大全
</a>
</li>
<li class="chapter " data-level="3.3.4" data-path="../guide/using-etcdctl-to-access-kubernetes-data.html">
<a href="../guide/using-etcdctl-to-access-kubernetes-data.html">
<b>3.3.4.</b>
使用etcdctl访问kuberentes数据
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3.4" data-path="../guide/cluster-security-management.html">
<a href="../guide/cluster-security-management.html">
<b>3.4.</b>
集群安全性管理
</a>
<ul class="articles">
<li class="chapter " data-level="3.4.1" data-path="../guide/managing-tls-in-a-cluster.html">
<a href="../guide/managing-tls-in-a-cluster.html">
<b>3.4.1.</b>
管理集群中的TLS
</a>
</li>
<li class="chapter " data-level="3.4.2" data-path="../guide/kubelet-authentication-authorization.html">
<a href="../guide/kubelet-authentication-authorization.html">
<b>3.4.2.</b>
kubelet的认证授权
</a>
</li>
<li class="chapter " data-level="3.4.3" data-path="../guide/tls-bootstrapping.html">
<a href="../guide/tls-bootstrapping.html">
<b>3.4.3.</b>
TLS bootstrap
</a>
</li>
<li class="chapter " data-level="3.4.4" data-path="../guide/kubectl-user-authentication-authorization.html">
<a href="../guide/kubectl-user-authentication-authorization.html">
<b>3.4.4.</b>
创建用户认证授权的kubeconfig文件
</a>
</li>
<li class="chapter " data-level="3.4.5" data-path="../guide/rbac.html">
<a href="../guide/rbac.html">
<b>3.4.5.</b>
RBAC——基于角色的访问控制
</a>
</li>
<li class="chapter " data-level="3.4.6" data-path="../guide/ip-masq-agent.html">
<a href="../guide/ip-masq-agent.html">
<b>3.4.6.</b>
IP伪装代理
</a>
</li>
<li class="chapter " data-level="3.4.7" data-path="../guide/auth-with-kubeconfig-or-token.html">
<a href="../guide/auth-with-kubeconfig-or-token.html">
<b>3.4.7.</b>
使用kubeconfig或token进行用户身份认证
</a>
</li>
<li class="chapter " data-level="3.4.8" data-path="../guide/authentication.html">
<a href="../guide/authentication.html">
<b>3.4.8.</b>
kubernetes中的用户与身份认证授权
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3.5" data-path="../guide/access-kubernetes-cluster.html">
<a href="../guide/access-kubernetes-cluster.html">
<b>3.5.</b>
访问Kubernetes集群
</a>
<ul class="articles">
<li class="chapter " data-level="3.5.1" data-path="../guide/access-cluster.html">
<a href="../guide/access-cluster.html">
<b>3.5.1.</b>
访问集群
</a>
</li>
<li class="chapter " data-level="3.5.2" data-path="../guide/authenticate-across-clusters-kubeconfig.html">
<a href="../guide/authenticate-across-clusters-kubeconfig.html">
<b>3.5.2.</b>
使用kubeconfig文件配置跨集群认证
</a>
</li>
<li class="chapter " data-level="3.5.3" data-path="../guide/connecting-to-applications-port-forward.html">
<a href="../guide/connecting-to-applications-port-forward.html">
<b>3.5.3.</b>
通过端口转发访问集群中的应用程序
</a>
</li>
<li class="chapter " data-level="3.5.4" data-path="../guide/service-access-application-cluster.html">
<a href="../guide/service-access-application-cluster.html">
<b>3.5.4.</b>
使用service访问群集中的应用程序
</a>
</li>
<li class="chapter " data-level="3.5.5" data-path="../guide/accessing-kubernetes-pods-from-outside-of-the-cluster.html">
<a href="../guide/accessing-kubernetes-pods-from-outside-of-the-cluster.html">
<b>3.5.5.</b>
从外部访问Kubernetes中的Pod
</a>
</li>
<li class="chapter " data-level="3.5.6" data-path="../guide/carbin-mobile-dashboard-for-kubernetes.html">
<a href="../guide/carbin-mobile-dashboard-for-kubernetes.html">
<b>3.5.6.</b>
Carbin - Kuberentes手机客户端
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3.6" data-path="../guide/application-development-deployment-flow.html">
<a href="../guide/application-development-deployment-flow.html">
<b>3.6.</b>
在kubernetes中开发部署应用
</a>
<ul class="articles">
<li class="chapter " data-level="3.6.1" data-path="../guide/deploy-applications-in-kubernetes.html">
<a href="../guide/deploy-applications-in-kubernetes.html">
<b>3.6.1.</b>
适用于kubernetes的应用开发部署流程
</a>
</li>
<li class="chapter " data-level="3.6.2" data-path="../guide/migrating-hadoop-yarn-to-kubernetes.html">
<a href="../guide/migrating-hadoop-yarn-to-kubernetes.html">
<b>3.6.2.</b>
迁移传统应用到kubernetes中——以Hadoop YARN为例
</a>
</li>
<li class="chapter " data-level="3.6.3" data-path="../guide/using-statefulset.html">
<a href="../guide/using-statefulset.html">
<b>3.6.3.</b>
使用StatefulSet部署用状态应用
</a>
</li>
</ul>
</li>
<li class="header">最佳实践</li>
<li class="chapter " data-level="4.1" data-path="../practice/">
<a href="../practice/">
<b>4.1.</b>
最佳实践概览
</a>
</li>
<li class="chapter " data-level="4.2" data-path="../practice/install-kbernetes1.6-on-centos.html">
<a href="../practice/install-kbernetes1.6-on-centos.html">
<b>4.2.</b>
在CentOS上部署kubernetes1.6集群
</a>
<ul class="articles">
<li class="chapter " data-level="4.2.1" data-path="../practice/create-tls-and-secret-key.html">
<a href="../practice/create-tls-and-secret-key.html">
<b>4.2.1.</b>
创建TLS证书和秘钥
</a>
</li>
<li class="chapter " data-level="4.2.2" data-path="../practice/create-kubeconfig.html">
<a href="../practice/create-kubeconfig.html">
<b>4.2.2.</b>
创建kubeconfig文件
</a>
</li>
<li class="chapter " data-level="4.2.3" data-path="../practice/etcd-cluster-installation.html">
<a href="../practice/etcd-cluster-installation.html">
<b>4.2.3.</b>
创建高可用etcd集群
</a>
</li>
<li class="chapter " data-level="4.2.4" data-path="../practice/kubectl-installation.html">
<a href="../practice/kubectl-installation.html">
<b>4.2.4.</b>
安装kubectl命令行工具
</a>
</li>
<li class="chapter " data-level="4.2.5" data-path="../practice/master-installation.html">
<a href="../practice/master-installation.html">
<b>4.2.5.</b>
部署master节点
</a>
</li>
<li class="chapter " data-level="4.2.6" data-path="../practice/node-installation.html">
<a href="../practice/node-installation.html">
<b>4.2.6.</b>
部署node节点
</a>
</li>
<li class="chapter " data-level="4.2.7" data-path="../practice/kubedns-addon-installation.html">
<a href="../practice/kubedns-addon-installation.html">
<b>4.2.7.</b>
安装kubedns插件
</a>
</li>
<li class="chapter " data-level="4.2.8" data-path="../practice/dashboard-addon-installation.html">
<a href="../practice/dashboard-addon-installation.html">
<b>4.2.8.</b>
安装dashboard插件
</a>
</li>
<li class="chapter " data-level="4.2.9" data-path="../practice/heapster-addon-installation.html">
<a href="../practice/heapster-addon-installation.html">
<b>4.2.9.</b>
安装heapster插件
</a>
</li>
<li class="chapter " data-level="4.2.10" data-path="../practice/efk-addon-installation.html">
<a href="../practice/efk-addon-installation.html">
<b>4.2.10.</b>
安装EFK插件
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.3" data-path="../practice/service-discovery-and-loadbalancing.html">
<a href="../practice/service-discovery-and-loadbalancing.html">
<b>4.3.</b>
服务发现与负载均衡
</a>
<ul class="articles">
<li class="chapter " data-level="4.3.1" data-path="../practice/traefik-ingress-installation.html">
<a href="../practice/traefik-ingress-installation.html">
<b>4.3.1.</b>
安装Traefik ingress
</a>
</li>
<li class="chapter " data-level="4.3.2" data-path="../practice/distributed-load-test.html">
<a href="../practice/distributed-load-test.html">
<b>4.3.2.</b>
分布式负载测试
</a>
</li>
<li class="chapter " data-level="4.3.3" data-path="../practice/network-and-cluster-perfermance-test.html">
<a href="../practice/network-and-cluster-perfermance-test.html">
<b>4.3.3.</b>
网络和集群性能测试
</a>
</li>
<li class="chapter " data-level="4.3.4" data-path="../practice/edge-node-configuration.html">
<a href="../practice/edge-node-configuration.html">
<b>4.3.4.</b>
边缘节点配置
</a>
</li>
<li class="chapter " data-level="4.3.5" data-path="../practice/nginx-ingress-installation.html">
<a href="../practice/nginx-ingress-installation.html">
<b>4.3.5.</b>
安装Nginx ingress
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.4" data-path="../practice/operation.html">
<a href="../practice/operation.html">
<b>4.4.</b>
运维管理
</a>
<ul class="articles">
<li class="chapter " data-level="4.4.1" data-path="../practice/service-rolling-update.html">
<a href="../practice/service-rolling-update.html">
<b>4.4.1.</b>
服务滚动升级
</a>
</li>
<li class="chapter " data-level="4.4.2" data-path="../practice/app-log-collection.html">
<a href="../practice/app-log-collection.html">
<b>4.4.2.</b>
应用日志收集
</a>
</li>
<li class="chapter " data-level="4.4.3" data-path="../practice/configuration-best-practice.html">
<a href="../practice/configuration-best-practice.html">
<b>4.4.3.</b>
配置最佳实践
</a>
</li>
<li class="chapter " data-level="4.4.4" data-path="../practice/monitor.html">
<a href="../practice/monitor.html">
<b>4.4.4.</b>
集群及应用监控
</a>
</li>
<li class="chapter " data-level="4.4.5" data-path="../practice/data-persistence-problem.html">
<a href="../practice/data-persistence-problem.html">
<b>4.4.5.</b>
数据持久化问题
</a>
</li>
<li class="chapter " data-level="4.4.6" data-path="../practice/manage-compute-resources-container.html">
<a href="../practice/manage-compute-resources-container.html">
<b>4.4.6.</b>
管理容器的计算资源
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.5" data-path="../practice/storage.html">
<a href="../practice/storage.html">
<b>4.5.</b>
存储管理
</a>
<ul class="articles">
<li class="chapter " data-level="4.5.1" data-path="../practice/glusterfs.html">
<a href="../practice/glusterfs.html">
<b>4.5.1.</b>
GlusterFS
</a>
<ul class="articles">
<li class="chapter " data-level="4.5.1.1" data-path="../practice/using-glusterfs-for-persistent-storage.html">
<a href="../practice/using-glusterfs-for-persistent-storage.html">
<b>4.5.1.1.</b>
使用GlusterFS做持久化存储
</a>
</li>
<li class="chapter " data-level="4.5.1.2" data-path="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
<a href="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
<b>4.5.1.2.</b>
在OpenShift中使用GlusterFS做持久化存储
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.5.2" data-path="../practice/cephfs.html">
<a href="../practice/cephfs.html">
<b>4.5.2.</b>
CephFS
</a>
<ul class="articles">
<li class="chapter " data-level="4.5.2.1" data-path="../practice/using-ceph-for-persistent-storage.html">
<a href="../practice/using-ceph-for-persistent-storage.html">
<b>4.5.2.1.</b>
使用Ceph做持久化存储
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="4.6" data-path="../practice/monitoring.html">
<a href="../practice/monitoring.html">
<b>4.6.</b>
集群与应用监控
</a>
<ul class="articles">
<li class="chapter " data-level="4.6.1" data-path="../practice/heapster.html">
<a href="../practice/heapster.html">
<b>4.6.1.</b>
Heapster
</a>
<ul class="articles">
<li class="chapter " data-level="4.6.1.1" data-path="../practice/using-heapster-to-get-object-metrics.html">
<a href="../practice/using-heapster-to-get-object-metrics.html">
<b>4.6.1.1.</b>
使用Heapster获取集群和对象的metric数据
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.6.2" data-path="../practice/prometheus.html">
<a href="../practice/prometheus.html">
<b>4.6.2.</b>
Prometheus
</a>
<ul class="articles">
<li class="chapter " data-level="4.6.2.1" data-path="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
<a href="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
<b>4.6.2.1.</b>
使用Prometheus监控kubernetes集群
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="4.7" data-path="../practice/services-management-tool.html">
<a href="../practice/services-management-tool.html">
<b>4.7.</b>
服务编排管理
</a>
<ul class="articles">
<li class="chapter " data-level="4.7.1" data-path="../practice/helm.html">
<a href="../practice/helm.html">
<b>4.7.1.</b>
使用Helm管理kubernetes应用
</a>
</li>
<li class="chapter " data-level="4.7.2" data-path="../practice/create-private-charts-repo.html">
<a href="../practice/create-private-charts-repo.html">
<b>4.7.2.</b>
构建私有Chart仓库
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.8" data-path="../practice/ci-cd.html">
<a href="../practice/ci-cd.html">
<b>4.8.</b>
持续集成与发布
</a>
<ul class="articles">
<li class="chapter " data-level="4.8.1" data-path="../practice/jenkins-ci-cd.html">
<a href="../practice/jenkins-ci-cd.html">
<b>4.8.1.</b>
使用Jenkins进行持续集成与发布
</a>
</li>
<li class="chapter " data-level="4.8.2" data-path="../practice/drone-ci-cd.html">
<a href="../practice/drone-ci-cd.html">
<b>4.8.2.</b>
使用Drone进行持续集成与发布
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.9" data-path="../practice/update-and-upgrade.html">
<a href="../practice/update-and-upgrade.html">
<b>4.9.</b>
更新与升级
</a>
<ul class="articles">
<li class="chapter " data-level="4.9.1" data-path="../practice/manually-upgrade.html">
<a href="../practice/manually-upgrade.html">
<b>4.9.1.</b>
手动升级kubernetes集群
</a>
</li>
<li class="chapter " data-level="4.9.2" data-path="../practice/dashboard-upgrade.html">
<a href="../practice/dashboard-upgrade.html">
<b>4.9.2.</b>
升级dashboard
</a>
</li>
</ul>
</li>
<li class="header">领域应用</li>
<li class="chapter " data-level="5.1" data-path="../usecases/">
<a href="../usecases/">
<b>5.1.</b>
领域应用概览
</a>
</li>
<li class="chapter " data-level="5.2" data-path="../usecases/microservices.html">
<a href="../usecases/microservices.html">
<b>5.2.</b>
微服务架构
</a>
<ul class="articles">
<li class="chapter " data-level="5.2.1" data-path="../usecases/service-discovery-in-microservices.html">
<a href="../usecases/service-discovery-in-microservices.html">
<b>5.2.1.</b>
微服务中的服务发现
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.3" data-path="../usecases/service-mesh.html">
<a href="../usecases/service-mesh.html">
<b>5.3.</b>
Service Mesh 服务网格
</a>
<ul class="articles">
<li class="chapter " data-level="5.3.1" data-path="../usecases/istio.html">
<a href="../usecases/istio.html">
<b>5.3.1.</b>
Istio
</a>
<ul class="articles">
<li class="chapter " data-level="5.3.1.1" data-path="../usecases/istio-installation.html">
<a href="../usecases/istio-installation.html">
<b>5.3.1.1.</b>
安装并试用Istio service mesh
</a>
</li>
<li class="chapter " data-level="5.3.1.2" data-path="../usecases/configuring-request-routing.html">
<a href="../usecases/configuring-request-routing.html">
<b>5.3.1.2.</b>
配置请求的路由规则
</a>
</li>
<li class="chapter " data-level="5.3.1.3" data-path="../usecases/install-and-expand-istio-mesh.html">
<a href="../usecases/install-and-expand-istio-mesh.html">
<b>5.3.1.3.</b>
安装和拓展Istio service mesh
</a>
</li>
<li class="chapter " data-level="5.3.1.4" data-path="../usecases/integrating-vms.html">
<a href="../usecases/integrating-vms.html">
<b>5.3.1.4.</b>
集成虚拟机
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.3.2" data-path="../usecases/linkerd.html">
<a href="../usecases/linkerd.html">
<b>5.3.2.</b>
Linkerd
</a>
<ul class="articles">
<li class="chapter " data-level="5.3.2.1" data-path="../usecases/linkerd-user-guide.html">
<a href="../usecases/linkerd-user-guide.html">
<b>5.3.2.1.</b>
Linkerd 使用指南
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="5.4" data-path="../usecases/big-data.html">
<a href="../usecases/big-data.html">
<b>5.4.</b>
大数据
</a>
<ul class="articles">
<li class="chapter " data-level="5.4.1" data-path="../usecases/spark-standalone-on-kubernetes.html">
<a href="../usecases/spark-standalone-on-kubernetes.html">
<b>5.4.1.</b>
Spark standalone on Kubernetes
</a>
</li>
<li class="chapter " data-level="5.4.2" data-path="../usecases/running-spark-with-kubernetes-native-scheduler.html">
<a href="../usecases/running-spark-with-kubernetes-native-scheduler.html">
<b>5.4.2.</b>
运行支持kubernetes原生调度的Spark程序
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.5" data-path="../usecases/serverless.html">
<a href="../usecases/serverless.html">
<b>5.5.</b>
Serverless架构
</a>
<ul class="articles">
<li class="chapter " data-level="5.5.1" data-path="../usecases/understanding-serverless.html">
<a href="../usecases/understanding-serverless.html">
<b>5.5.1.</b>
理解Serverless
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.6" data-path="../usecases/edge-computing.html">
<a href="../usecases/edge-computing.html">
<b>5.6.</b>
边缘计算
</a>
</li>
<li class="header">开发指南</li>
<li class="chapter " data-level="6.1" data-path="../develop/">
<a href="../develop/">
<b>6.1.</b>
开发指南概览
</a>
</li>
<li class="chapter " data-level="6.2" data-path="../develop/developing-environment.html">
<a href="../develop/developing-environment.html">
<b>6.2.</b>
开发环境搭建
</a>
</li>
<li class="chapter " data-level="6.3" data-path="../develop/testing.html">
<a href="../develop/testing.html">
<b>6.3.</b>
单元测试和集成测试
</a>
</li>
<li class="chapter " data-level="6.4" data-path="../develop/client-go-sample.html">
<a href="../develop/client-go-sample.html">
<b>6.4.</b>
client-go示例
</a>
</li>
<li class="chapter " data-level="6.5" data-path="../develop/contribute.html">
<a href="../develop/contribute.html">
<b>6.5.</b>
社区贡献
</a>
</li>
<li class="chapter " data-level="6.6" data-path="../develop/minikube.html">
<a href="../develop/minikube.html">
<b>6.6.</b>
Minikube
</a>
</li>
<li class="header">附录</li>
<li class="chapter " data-level="7.1" data-path="../appendix/">
<a href="../appendix/">
<b>7.1.</b>
附录说明
</a>
</li>
<li class="chapter " data-level="7.2" data-path="../appendix/debug-kubernetes-services.html">
<a href="../appendix/debug-kubernetes-services.html">
<b>7.2.</b>
Kubernetes中的应用故障排查
</a>
</li>
<li class="chapter " data-level="7.3" data-path="../appendix/material-share.html">
<a href="../appendix/material-share.html">
<b>7.3.</b>
Kubernetes相关资讯和情报链接
</a>
</li>
<li class="chapter " data-level="7.4" data-path="../appendix/docker-best-practice.html">
<a href="../appendix/docker-best-practice.html">
<b>7.4.</b>
Docker最佳实践
</a>
</li>
<li class="chapter " data-level="7.5" data-path="../appendix/tricks.html">
<a href="../appendix/tricks.html">
<b>7.5.</b>
使用技巧
</a>
</li>
<li class="chapter " data-level="7.6" data-path="../appendix/issues.html">
<a href="../appendix/issues.html">
<b>7.6.</b>
问题记录
</a>
</li>
<li class="divider"></li>
<li>
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
本书使用 GitBook 发布
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<a href=".." >Init容器</a>
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<section class="normal markdown-section">
<h1 id="init-&#x5BB9;&#x5668;">Init &#x5BB9;&#x5668;</h1>
<p>&#x8BE5;&#x7279;&#x6027;&#x5728; 1.6 &#x7248;&#x672C;&#x5DF2;&#x7ECF;&#x63A8;&#x51FA; beta &#x7248;&#x672C;&#x3002;Init &#x5BB9;&#x5668;&#x53EF;&#x4EE5;&#x5728; PodSpec &#x4E2D;&#x540C;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x7684; <code>containers</code> &#x6570;&#x7EC4;&#x4E00;&#x8D77;&#x6765;&#x6307;&#x5B9A;&#x3002; beta &#x6CE8;&#x89E3;&#x7684;&#x503C;&#x5C06;&#x4ECD;&#x9700;&#x4FDD;&#x7559;&#xFF0C;&#x5E76;&#x8986;&#x76D6; PodSpec &#x5B57;&#x6BB5;&#x503C;&#x3002;</p>
<p>&#x672C;&#x6587;&#x8BB2;&#x89E3; Init &#x5BB9;&#x5668;&#x7684;&#x57FA;&#x672C;&#x6982;&#x5FF5;&#xFF0C;&#x5B83;&#x662F;&#x4E00;&#x79CD;&#x4E13;&#x7528;&#x7684;&#x5BB9;&#x5668;&#xFF0C;&#x5728;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x4E4B;&#x524D;&#x8FD0;&#x884C;&#xFF0C;&#x5E76;&#x5305;&#x62EC;&#x4E00;&#x4E9B;&#x5E94;&#x7528;&#x955C;&#x50CF;&#x4E2D;&#x4E0D;&#x5B58;&#x5728;&#x7684;&#x5B9E;&#x7528;&#x5DE5;&#x5177;&#x548C;&#x5B89;&#x88C5;&#x811A;&#x672C;&#x3002;</p>
<h2 id="&#x7406;&#x89E3;-init-&#x5BB9;&#x5668;">&#x7406;&#x89E3; Init &#x5BB9;&#x5668;</h2>
<p><a href="https://kubernetes.io/docs/concepts/abstractions/pod/" target="_blank">Pod</a> &#x80FD;&#x591F;&#x5177;&#x6709;&#x591A;&#x4E2A;&#x5BB9;&#x5668;&#xFF0C;&#x5E94;&#x7528;&#x8FD0;&#x884C;&#x5728;&#x5BB9;&#x5668;&#x91CC;&#x9762;&#xFF0C;&#x4F46;&#x662F;&#x5B83;&#x4E5F;&#x53EF;&#x80FD;&#x6709;&#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x5148;&#x4E8E;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x7684; Init &#x5BB9;&#x5668;&#x3002;</p>
<p>Init &#x5BB9;&#x5668;&#x4E0E;&#x666E;&#x901A;&#x7684;&#x5BB9;&#x5668;&#x975E;&#x5E38;&#x50CF;&#xFF0C;&#x9664;&#x4E86;&#x5982;&#x4E0B;&#x4E24;&#x70B9;&#xFF1A;</p>
<ul>
<li>Init &#x5BB9;&#x5668;&#x603B;&#x662F;&#x8FD0;&#x884C;&#x5230;&#x6210;&#x529F;&#x5B8C;&#x6210;&#x4E3A;&#x6B62;&#x3002;</li>
<li>&#x6BCF;&#x4E2A; Init &#x5BB9;&#x5668;&#x90FD;&#x5FC5;&#x987B;&#x5728;&#x4E0B;&#x4E00;&#x4E2A; Init &#x5BB9;&#x5668;&#x542F;&#x52A8;&#x4E4B;&#x524D;&#x6210;&#x529F;&#x5B8C;&#x6210;&#x3002;</li>
</ul>
<p>&#x5982;&#x679C; Pod &#x7684; Init &#x5BB9;&#x5668;&#x5931;&#x8D25;&#xFF0C;Kubernetes &#x4F1A;&#x4E0D;&#x65AD;&#x5730;&#x91CD;&#x542F;&#x8BE5; Pod&#xFF0C;&#x76F4;&#x5230; Init &#x5BB9;&#x5668;&#x6210;&#x529F;&#x4E3A;&#x6B62;&#x3002;&#x7136;&#x800C;&#xFF0C;&#x5982;&#x679C; Pod &#x5BF9;&#x5E94;&#x7684; <code>restartPolicy</code> &#x4E3A; Never&#xFF0C;&#x5B83;&#x4E0D;&#x4F1A;&#x91CD;&#x65B0;&#x542F;&#x52A8;&#x3002;</p>
<p>&#x6307;&#x5B9A;&#x5BB9;&#x5668;&#x4E3A; Init &#x5BB9;&#x5668;&#xFF0C;&#x5728; PodSpec &#x4E2D;&#x6DFB;&#x52A0; <code>initContainers</code> &#x5B57;&#x6BB5;&#xFF0C;&#x4EE5; <a href="https://kubernetes.io/docs/api-reference/v1.6/#container-v1-core" target="_blank">v1.Container</a> &#x7C7B;&#x578B;&#x5BF9;&#x8C61;&#x7684; JSON &#x6570;&#x7EC4;&#x7684;&#x5F62;&#x5F0F;&#xFF0C;&#x8FD8;&#x6709; app &#x7684; <code>containers</code> &#x6570;&#x7EC4;&#x3002; Init &#x5BB9;&#x5668;&#x7684;&#x72B6;&#x6001;&#x5728; <code>status.initContainerStatuses</code> &#x5B57;&#x6BB5;&#x4E2D;&#x4EE5;&#x5BB9;&#x5668;&#x72B6;&#x6001;&#x6570;&#x7EC4;&#x7684;&#x683C;&#x5F0F;&#x8FD4;&#x56DE;&#xFF08;&#x7C7B;&#x4F3C; <code>status.containerStatuses</code> &#x5B57;&#x6BB5;&#xFF09;&#x3002;</p>
<h3 id="&#x4E0E;&#x666E;&#x901A;&#x5BB9;&#x5668;&#x7684;&#x4E0D;&#x540C;&#x4E4B;&#x5904;">&#x4E0E;&#x666E;&#x901A;&#x5BB9;&#x5668;&#x7684;&#x4E0D;&#x540C;&#x4E4B;&#x5904;</h3>
<p>Init &#x5BB9;&#x5668;&#x652F;&#x6301;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x7684;&#x5168;&#x90E8;&#x5B57;&#x6BB5;&#x548C;&#x7279;&#x6027;&#xFF0C;&#x5305;&#x62EC;&#x8D44;&#x6E90;&#x9650;&#x5236;&#x3001;&#x6570;&#x636E;&#x5377;&#x548C;&#x5B89;&#x5168;&#x8BBE;&#x7F6E;&#x3002; &#x7136;&#x800C;&#xFF0C;Init &#x5BB9;&#x5668;&#x5BF9;&#x8D44;&#x6E90;&#x8BF7;&#x6C42;&#x548C;&#x9650;&#x5236;&#x7684;&#x5904;&#x7406;&#x7A0D;&#x6709;&#x4E0D;&#x540C;&#xFF0C;&#x5728;&#x4E0B;&#x9762; <a href="https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#resources" target="_blank">&#x8D44;&#x6E90;</a> &#x5904;&#x6709;&#x8BF4;&#x660E;&#x3002; &#x800C;&#x4E14; Init &#x5BB9;&#x5668;&#x4E0D;&#x652F;&#x6301; Readiness Probe&#xFF0C;&#x56E0;&#x4E3A;&#x5B83;&#x4EEC;&#x5FC5;&#x987B;&#x5728; Pod &#x5C31;&#x7EEA;&#x4E4B;&#x524D;&#x8FD0;&#x884C;&#x5B8C;&#x6210;&#x3002;</p>
<p>&#x5982;&#x679C;&#x4E3A;&#x4E00;&#x4E2A; Pod &#x6307;&#x5B9A;&#x4E86;&#x591A;&#x4E2A; Init &#x5BB9;&#x5668;&#xFF0C;&#x90A3;&#x4E9B;&#x5BB9;&#x5668;&#x4F1A;&#x6309;&#x987A;&#x5E8F;&#x4E00;&#x6B21;&#x8FD0;&#x884C;&#x4E00;&#x4E2A;&#x3002; &#x6BCF;&#x4E2A; Init &#x5BB9;&#x5668;&#x5FC5;&#x987B;&#x8FD0;&#x884C;&#x6210;&#x529F;&#xFF0C;&#x4E0B;&#x4E00;&#x4E2A;&#x624D;&#x80FD;&#x591F;&#x8FD0;&#x884C;&#x3002; &#x5F53;&#x6240;&#x6709;&#x7684; Init &#x5BB9;&#x5668;&#x8FD0;&#x884C;&#x5B8C;&#x6210;&#x65F6;&#xFF0C;Kubernetes &#x521D;&#x59CB;&#x5316; Pod &#x5E76;&#x50CF;&#x5E73;&#x5E38;&#x4E00;&#x6837;&#x8FD0;&#x884C;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x3002;</p>
<h2 id="init-&#x5BB9;&#x5668;&#x80FD;&#x505A;&#x4EC0;&#x4E48;&#xFF1F;">Init &#x5BB9;&#x5668;&#x80FD;&#x505A;&#x4EC0;&#x4E48;&#xFF1F;</h2>
<p>&#x56E0;&#x4E3A; Init &#x5BB9;&#x5668;&#x5177;&#x6709;&#x4E0E;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x5206;&#x79BB;&#x7684;&#x5355;&#x72EC;&#x955C;&#x50CF;&#xFF0C;&#x6240;&#x4EE5;&#x5B83;&#x4EEC;&#x7684;&#x542F;&#x52A8;&#x76F8;&#x5173;&#x4EE3;&#x7801;&#x5177;&#x6709;&#x5982;&#x4E0B;&#x4F18;&#x52BF;&#xFF1A;</p>
<ul>
<li>&#x5B83;&#x4EEC;&#x53EF;&#x4EE5;&#x5305;&#x542B;&#x5E76;&#x8FD0;&#x884C;&#x5B9E;&#x7528;&#x5DE5;&#x5177;&#xFF0C;&#x4F46;&#x662F;&#x51FA;&#x4E8E;&#x5B89;&#x5168;&#x8003;&#x8651;&#xFF0C;&#x662F;&#x4E0D;&#x5EFA;&#x8BAE;&#x5728;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x955C;&#x50CF;&#x4E2D;&#x5305;&#x542B;&#x8FD9;&#x4E9B;&#x5B9E;&#x7528;&#x5DE5;&#x5177;&#x7684;&#x3002;</li>
<li>&#x5B83;&#x4EEC;&#x53EF;&#x4EE5;&#x5305;&#x542B;&#x4F7F;&#x7528;&#x5DE5;&#x5177;&#x548C;&#x5B9A;&#x5236;&#x5316;&#x4EE3;&#x7801;&#x6765;&#x5B89;&#x88C5;&#xFF0C;&#x4F46;&#x662F;&#x4E0D;&#x80FD;&#x51FA;&#x73B0;&#x5728;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x955C;&#x50CF;&#x4E2D;&#x3002;&#x4F8B;&#x5982;&#xFF0C;&#x521B;&#x5EFA;&#x955C;&#x50CF;&#x6CA1;&#x5FC5;&#x8981; <code>FROM</code> &#x53E6;&#x4E00;&#x4E2A;&#x955C;&#x50CF;&#xFF0C;&#x53EA;&#x9700;&#x8981;&#x5728;&#x5B89;&#x88C5;&#x8FC7;&#x7A0B;&#x4E2D;&#x4F7F;&#x7528;&#x7C7B;&#x4F3C; <code>sed</code>&#x3001; <code>awk</code>&#x3001; <code>python</code> &#x6216; <code>dig</code> &#x8FD9;&#x6837;&#x7684;&#x5DE5;&#x5177;&#x3002;</li>
<li>&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x955C;&#x50CF;&#x53EF;&#x4EE5;&#x5206;&#x79BB;&#x51FA;&#x521B;&#x5EFA;&#x548C;&#x90E8;&#x7F72;&#x7684;&#x89D2;&#x8272;&#xFF0C;&#x800C;&#x6CA1;&#x6709;&#x5FC5;&#x8981;&#x8054;&#x5408;&#x5B83;&#x4EEC;&#x6784;&#x5EFA;&#x4E00;&#x4E2A;&#x5355;&#x72EC;&#x7684;&#x955C;&#x50CF;&#x3002;</li>
<li>Init &#x5BB9;&#x5668;&#x4F7F;&#x7528; Linux Namespace&#xFF0C;&#x6240;&#x4EE5;&#x76F8;&#x5BF9;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x6765;&#x8BF4;&#x5177;&#x6709;&#x4E0D;&#x540C;&#x7684;&#x6587;&#x4EF6;&#x7CFB;&#x7EDF;&#x89C6;&#x56FE;&#x3002;&#x56E0;&#x6B64;&#xFF0C;&#x5B83;&#x4EEC;&#x80FD;&#x591F;&#x5177;&#x6709;&#x8BBF;&#x95EE; Secret &#x7684;&#x6743;&#x9650;&#xFF0C;&#x800C;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x5219;&#x4E0D;&#x80FD;&#x3002;</li>
<li>&#x5B83;&#x4EEC;&#x5FC5;&#x987B;&#x5728;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x4E4B;&#x524D;&#x8FD0;&#x884C;&#x5B8C;&#x6210;&#xFF0C;&#x800C;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5BB9;&#x5668;&#x662F;&#x5E76;&#x884C;&#x8FD0;&#x884C;&#x7684;&#xFF0C;&#x6240;&#x4EE5; Init &#x5BB9;&#x5668;&#x80FD;&#x591F;&#x63D0;&#x4F9B;&#x4E86;&#x4E00;&#x79CD;&#x7B80;&#x5355;&#x7684;&#x963B;&#x585E;&#x6216;&#x5EF6;&#x8FDF;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x7684;&#x542F;&#x52A8;&#x7684;&#x65B9;&#x6CD5;&#xFF0C;&#x76F4;&#x5230;&#x6EE1;&#x8DB3;&#x4E86;&#x4E00;&#x7EC4;&#x5148;&#x51B3;&#x6761;&#x4EF6;&#x3002;</li>
</ul>
<h3 id="&#x793A;&#x4F8B;">&#x793A;&#x4F8B;</h3>
<p>&#x4E0B;&#x9762;&#x662F;&#x4E00;&#x4E9B;&#x5982;&#x4F55;&#x4F7F;&#x7528; Init &#x5BB9;&#x5668;&#x7684;&#x60F3;&#x6CD5;&#xFF1A;</p>
<ul>
<li><p>&#x7B49;&#x5F85;&#x4E00;&#x4E2A; Service &#x521B;&#x5EFA;&#x5B8C;&#x6210;&#xFF0C;&#x901A;&#x8FC7;&#x7C7B;&#x4F3C;&#x5982;&#x4E0B; shell &#x547D;&#x4EE4;&#xFF1A;</p>
<pre><code> for i in {1..100}; do sleep 1; if dig myservice; then exit 0; fi; exit 1
</code></pre></li>
<li><p>&#x5C06; Pod &#x6CE8;&#x518C;&#x5230;&#x8FDC;&#x7A0B;&#x670D;&#x52A1;&#x5668;&#xFF0C;&#x901A;&#x8FC7;&#x5728;&#x547D;&#x4EE4;&#x4E2D;&#x8C03;&#x7528; API&#xFF0C;&#x7C7B;&#x4F3C;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code> curl -X POST http://$MANAGEMENT_SERVICE_HOST:$MANAGEMENT_SERVICE_PORT/register -d &apos;instance=$(&lt;POD_NAME&gt;)&amp;ip=$(&lt;POD_IP&gt;)&apos;
</code></pre></li>
<li><p>&#x5728;&#x542F;&#x52A8;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x4E4B;&#x524D;&#x7B49;&#x4E00;&#x6BB5;&#x65F6;&#x95F4;&#xFF0C;&#x4F7F;&#x7528;&#x7C7B;&#x4F3C; <code>sleep 60</code> &#x7684;&#x547D;&#x4EE4;&#x3002;</p>
</li>
<li><p>&#x514B;&#x9686; Git &#x4ED3;&#x5E93;&#x5230;&#x6570;&#x636E;&#x5377;&#x3002;</p>
</li>
<li><p>&#x5C06;&#x914D;&#x7F6E;&#x503C;&#x653E;&#x5230;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x4E2D;&#xFF0C;&#x8FD0;&#x884C;&#x6A21;&#x677F;&#x5DE5;&#x5177;&#x4E3A;&#x4E3B;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x52A8;&#x6001;&#x5730;&#x751F;&#x6210;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x3002;&#x4F8B;&#x5982;&#xFF0C;&#x5728;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x4E2D;&#x5B58;&#x653E; POD_IP &#x503C;&#xFF0C;&#x5E76;&#x4F7F;&#x7528; Jinja &#x751F;&#x6210;&#x4E3B;&#x5E94;&#x7528;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x3002;</p>
</li>
</ul>
<p>&#x66F4;&#x591A;&#x8BE6;&#x7EC6;&#x7528;&#x6CD5;&#x793A;&#x4F8B;&#xFF0C;&#x53EF;&#x4EE5;&#x5728; <a href="https://kubernetes.io/docs/concepts/abstractions/controllers/statefulsets/" target="_blank">StatefulSet &#x6587;&#x6863;</a> &#x548C; <a href="https://kubernetes.io/docs/user-guide/production-pods.md#handling-initialization" target="_blank">&#x751F;&#x4EA7;&#x73AF;&#x5883; Pod &#x6307;&#x5357;</a> &#x4E2D;&#x627E;&#x5230;&#x3002;</p>
<h3 id="&#x4F7F;&#x7528;-init-&#x5BB9;&#x5668;">&#x4F7F;&#x7528; Init &#x5BB9;&#x5668;</h3>
<p>&#x4E0B;&#x9762;&#x662F; Kubernetes 1.5 &#x7248;&#x672C; yaml &#x6587;&#x4EF6;&#xFF0C;&#x5C55;&#x793A;&#x4E86;&#x4E00;&#x4E2A;&#x5177;&#x6709; 2 &#x4E2A; Init &#x5BB9;&#x5668;&#x7684;&#x7B80;&#x5355; Pod&#x3002; &#x7B2C;&#x4E00;&#x4E2A;&#x7B49;&#x5F85; <code>myservice</code> &#x542F;&#x52A8;&#xFF0C;&#x7B2C;&#x4E8C;&#x4E2A;&#x7B49;&#x5F85; <code>mydb</code> &#x542F;&#x52A8;&#x3002; &#x4E00;&#x65E6;&#x8FD9;&#x4E24;&#x4E2A; Service &#x90FD;&#x542F;&#x52A8;&#x5B8C;&#x6210;&#xFF0C;Pod &#x5C06;&#x5F00;&#x59CB;&#x542F;&#x52A8;&#x3002;</p>
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> v1
<span class="hljs-attr">kind:</span> Pod
<span class="hljs-attr">metadata:</span>
<span class="hljs-attr"> name:</span> myapp-pod
<span class="hljs-attr"> labels:</span>
<span class="hljs-attr"> app:</span> myapp
<span class="hljs-attr"> annotations:</span>
pod.beta.kubernetes.io/init-containers: <span class="hljs-string">&apos;[
{
&quot;name&quot;: &quot;init-myservice&quot;,
&quot;image&quot;: &quot;busybox&quot;,
&quot;command&quot;: [&quot;sh&quot;, &quot;-c&quot;, &quot;until nslookup myservice; do echo waiting for myservice; sleep 2; done;&quot;]
},
{
&quot;name&quot;: &quot;init-mydb&quot;,
&quot;image&quot;: &quot;busybox&quot;,
&quot;command&quot;: [&quot;sh&quot;, &quot;-c&quot;, &quot;until nslookup mydb; do echo waiting for mydb; sleep 2; done;&quot;]
}
]&apos;</span>
<span class="hljs-attr">spec:</span>
<span class="hljs-attr"> containers:</span>
<span class="hljs-attr"> - name:</span> myapp-container
<span class="hljs-attr"> image:</span> busybox
<span class="hljs-attr"> command:</span> [<span class="hljs-string">&apos;sh&apos;</span>, <span class="hljs-string">&apos;-c&apos;</span>, <span class="hljs-string">&apos;echo The app is running! &amp;&amp; sleep 3600&apos;</span>]
</code></pre>
<p>&#x8FD9;&#x662F; Kubernetes 1.6 &#x7248;&#x672C;&#x7684;&#x65B0;&#x8BED;&#x6CD5;&#xFF0C;&#x5C3D;&#x7BA1;&#x8001;&#x7684; annotation &#x8BED;&#x6CD5;&#x4ECD;&#x7136;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x3002;&#x6211;&#x4EEC;&#x5DF2;&#x7ECF;&#x628A; Init &#x5BB9;&#x5668;&#x7684;&#x58F0;&#x660E;&#x79FB;&#x5230; <code>spec</code> &#x4E2D;&#xFF1A;</p>
<pre><code class="lang-yaml"><span class="hljs-attr">apiVersion:</span> v1
<span class="hljs-attr">kind:</span> Pod
<span class="hljs-attr">metadata:</span>
<span class="hljs-attr"> name:</span> myapp-pod
<span class="hljs-attr"> labels:</span>
<span class="hljs-attr"> app:</span> myapp
<span class="hljs-attr">spec:</span>
<span class="hljs-attr"> containers:</span>
<span class="hljs-attr"> - name:</span> myapp-container
<span class="hljs-attr"> image:</span> busybox
<span class="hljs-attr"> command:</span> [<span class="hljs-string">&apos;sh&apos;</span>, <span class="hljs-string">&apos;-c&apos;</span>, <span class="hljs-string">&apos;echo The app is running! &amp;&amp; sleep 3600&apos;</span>]
<span class="hljs-attr"> initContainers:</span>
<span class="hljs-attr"> - name:</span> init-myservice
<span class="hljs-attr"> image:</span> busybox
<span class="hljs-attr"> command:</span> [<span class="hljs-string">&apos;sh&apos;</span>, <span class="hljs-string">&apos;-c&apos;</span>, <span class="hljs-string">&apos;until nslookup myservice; do echo waiting for myservice; sleep 2; done;&apos;</span>]
<span class="hljs-attr"> - name:</span> init-mydb
<span class="hljs-attr"> image:</span> busybox
<span class="hljs-attr"> command:</span> [<span class="hljs-string">&apos;sh&apos;</span>, <span class="hljs-string">&apos;-c&apos;</span>, <span class="hljs-string">&apos;until nslookup mydb; do echo waiting for mydb; sleep 2; done;&apos;</span>]
</code></pre>
<p>1.5 &#x7248;&#x672C;&#x7684;&#x8BED;&#x6CD5;&#x5728; 1.6 &#x7248;&#x672C;&#x4ECD;&#x7136;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#xFF0C;&#x4F46;&#x662F;&#x6211;&#x4EEC;&#x63A8;&#x8350;&#x4F7F;&#x7528; 1.6 &#x7248;&#x672C;&#x7684;&#x65B0;&#x8BED;&#x6CD5;&#x3002; &#x5728; Kubernetes 1.6 &#x7248;&#x672C;&#x4E2D;&#xFF0C;Init &#x5BB9;&#x5668;&#x5728; API &#x4E2D;&#x65B0;&#x5EFA;&#x4E86;&#x4E00;&#x4E2A;&#x5B57;&#x6BB5;&#x3002; &#x867D;&#x7136;&#x671F;&#x671B;&#x4F7F;&#x7528; beta &#x7248;&#x672C;&#x7684; annotation&#xFF0C;&#x4F46;&#x5728;&#x672A;&#x6765;&#x53D1;&#x884C;&#x7248;&#x5C06;&#x4F1A;&#x88AB;&#x5E9F;&#x5F03;&#x6389;&#x3002;</p>
<p>&#x4E0B;&#x9762;&#x7684; yaml &#x6587;&#x4EF6;&#x5C55;&#x793A;&#x4E86; <code>mydb</code> &#x548C; <code>myservice</code> &#x4E24;&#x4E2A; Service&#xFF1A;</p>
<pre><code class="lang-yaml"><span class="hljs-attr">kind:</span> Service
<span class="hljs-attr">apiVersion:</span> v1
<span class="hljs-attr">metadata:</span>
<span class="hljs-attr"> name:</span> myservice
<span class="hljs-attr">spec:</span>
<span class="hljs-attr"> ports:</span>
<span class="hljs-attr"> - protocol:</span> TCP
<span class="hljs-attr"> port:</span> <span class="hljs-number">80</span>
<span class="hljs-attr"> targetPort:</span> <span class="hljs-number">9376</span>
<span class="hljs-meta">---</span>
<span class="hljs-attr">kind:</span> Service
<span class="hljs-attr">apiVersion:</span> v1
<span class="hljs-attr">metadata:</span>
<span class="hljs-attr"> name:</span> mydb
<span class="hljs-attr">spec:</span>
<span class="hljs-attr"> ports:</span>
<span class="hljs-attr"> - protocol:</span> TCP
<span class="hljs-attr"> port:</span> <span class="hljs-number">80</span>
<span class="hljs-attr"> targetPort:</span> <span class="hljs-number">9377</span>
</code></pre>
<p>&#x8FD9;&#x4E2A; Pod &#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x4E0B;&#x9762;&#x7684;&#x547D;&#x4EE4;&#x8FDB;&#x884C;&#x542F;&#x52A8;&#x548C;&#x8C03;&#x8BD5;&#xFF1A;</p>
<pre><code class="lang-bash">$ kubectl create <span class="hljs-_">-f</span> myapp.yaml
pod <span class="hljs-string">&quot;myapp-pod&quot;</span> created
$ kubectl get <span class="hljs-_">-f</span> myapp.yaml
NAME READY STATUS RESTARTS AGE
myapp-pod 0/1 Init:0/2 0 6m
$ kubectl describe <span class="hljs-_">-f</span> myapp.yaml
Name: myapp-pod
Namespace: default
[...]
Labels: app=myapp
Status: Pending
[...]
Init Containers:
init-myservice:
[...]
State: Running
[...]
init-mydb:
[...]
State: Waiting
Reason: PodInitializing
Ready: False
[...]
Containers:
myapp-container:
[...]
State: Waiting
Reason: PodInitializing
Ready: False
[...]
Events:
FirstSeen LastSeen Count From SubObjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
16s 16s 1 {default-scheduler } Normal Scheduled Successfully assigned myapp-pod to 172.17.4.201
16s 16s 1 {kubelet 172.17.4.201} spec.initContainers{init-myservice} Normal Pulling pulling image <span class="hljs-string">&quot;busybox&quot;</span>
13s 13s 1 {kubelet 172.17.4.201} spec.initContainers{init-myservice} Normal Pulled Successfully pulled image <span class="hljs-string">&quot;busybox&quot;</span>
13s 13s 1 {kubelet 172.17.4.201} spec.initContainers{init-myservice} Normal Created Created container with docker id 5ced34a04634; Security:[seccomp=unconfined]
13s 13s 1 {kubelet 172.17.4.201} spec.initContainers{init-myservice} Normal Started Started container with docker id 5ced34a04634
$ kubectl logs myapp-pod -c init-myservice <span class="hljs-comment"># Inspect the first init container</span>
$ kubectl logs myapp-pod -c init-mydb <span class="hljs-comment"># Inspect the second init container</span>
</code></pre>
<p>&#x4E00;&#x65E6;&#x6211;&#x4EEC;&#x542F;&#x52A8;&#x4E86; <code>mydb</code> &#x548C; <code>myservice</code> &#x8FD9;&#x4E24;&#x4E2A; Service&#xFF0C;&#x6211;&#x4EEC;&#x80FD;&#x591F;&#x770B;&#x5230; Init &#x5BB9;&#x5668;&#x5B8C;&#x6210;&#xFF0C;&#x5E76;&#x4E14; <code>myapp-pod</code> &#x88AB;&#x521B;&#x5EFA;&#xFF1A;</p>
<pre><code class="lang-Bash">$ kubectl create <span class="hljs-_">-f</span> services.yaml
service <span class="hljs-string">&quot;myservice&quot;</span> created
service <span class="hljs-string">&quot;mydb&quot;</span> created
$ kubectl get <span class="hljs-_">-f</span> myapp.yaml
NAME READY STATUS RESTARTS AGE
myapp-pod 1/1 Running 0 9m
</code></pre>
<p>&#x8FD9;&#x4E2A;&#x4F8B;&#x5B50;&#x975E;&#x5E38;&#x7B80;&#x5355;&#xFF0C;&#x4F46;&#x662F;&#x5E94;&#x8BE5;&#x80FD;&#x591F;&#x4E3A;&#x6211;&#x4EEC;&#x521B;&#x5EFA;&#x81EA;&#x5DF1;&#x7684; Init &#x5BB9;&#x5668;&#x63D0;&#x4F9B;&#x4E00;&#x4E9B;&#x542F;&#x53D1;&#x3002;</p>
<h2 id="&#x5177;&#x4F53;&#x884C;&#x4E3A;">&#x5177;&#x4F53;&#x884C;&#x4E3A;</h2>
<p>&#x5728; Pod &#x542F;&#x52A8;&#x8FC7;&#x7A0B;&#x4E2D;&#xFF0C;Init &#x5BB9;&#x5668;&#x4F1A;&#x6309;&#x987A;&#x5E8F;&#x5728;&#x7F51;&#x7EDC;&#x548C;&#x6570;&#x636E;&#x5377;&#x521D;&#x59CB;&#x5316;&#x4E4B;&#x540E;&#x542F;&#x52A8;&#x3002; &#x6BCF;&#x4E2A;&#x5BB9;&#x5668;&#x5FC5;&#x987B;&#x5728;&#x4E0B;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x4E4B;&#x524D;&#x6210;&#x529F;&#x9000;&#x51FA;&#x3002; &#x5982;&#x679C;&#x7531;&#x4E8E;&#x8FD0;&#x884C;&#x65F6;&#x6216;&#x5931;&#x8D25;&#x9000;&#x51FA;&#xFF0C;&#x5BFC;&#x81F4;&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x5931;&#x8D25;&#xFF0C;&#x5B83;&#x4F1A;&#x6839;&#x636E; Pod &#x7684; <code>restartPolicy</code> &#x6307;&#x5B9A;&#x7684;&#x7B56;&#x7565;&#x8FDB;&#x884C;&#x91CD;&#x8BD5;&#x3002; &#x7136;&#x800C;&#xFF0C;&#x5982;&#x679C; Pod &#x7684; <code>restartPolicy</code> &#x8BBE;&#x7F6E;&#x4E3A; Always&#xFF0C;Init &#x5BB9;&#x5668;&#x5931;&#x8D25;&#x65F6;&#x4F1A;&#x4F7F;&#x7528; <code>RestartPolicy</code> &#x7B56;&#x7565;&#x3002;</p>
<p>&#x5728;&#x6240;&#x6709;&#x7684; Init &#x5BB9;&#x5668;&#x6CA1;&#x6709;&#x6210;&#x529F;&#x4E4B;&#x524D;&#xFF0C;Pod &#x5C06;&#x4E0D;&#x4F1A;&#x53D8;&#x6210; <code>Ready</code> &#x72B6;&#x6001;&#x3002; Init &#x5BB9;&#x5668;&#x7684;&#x7AEF;&#x53E3;&#x5C06;&#x4E0D;&#x4F1A;&#x5728; Service &#x4E2D;&#x8FDB;&#x884C;&#x805A;&#x96C6;&#x3002; &#x6B63;&#x5728;&#x521D;&#x59CB;&#x5316;&#x4E2D;&#x7684; Pod &#x5904;&#x4E8E; <code>Pending</code> &#x72B6;&#x6001;&#xFF0C;&#x4F46;&#x5E94;&#x8BE5;&#x4F1A;&#x5C06;&#x6761;&#x4EF6; <code>Initializing</code> &#x8BBE;&#x7F6E;&#x4E3A; true&#x3002;</p>
<p>&#x5982;&#x679C; Pod <a href="https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#pod-restart-reasons" target="_blank">&#x91CD;&#x542F;</a>&#xFF0C;&#x6240;&#x6709; Init &#x5BB9;&#x5668;&#x5FC5;&#x987B;&#x91CD;&#x65B0;&#x6267;&#x884C;&#x3002;</p>
<p>&#x5BF9; Init &#x5BB9;&#x5668; spec &#x7684;&#x4FEE;&#x6539;&#xFF0C;&#x88AB;&#x9650;&#x5236;&#x5728;&#x5BB9;&#x5668; image &#x5B57;&#x6BB5;&#x4E2D;&#x3002; &#x66F4;&#x6539; Init &#x5BB9;&#x5668;&#x7684; image &#x5B57;&#x6BB5;&#xFF0C;&#x7B49;&#x4EF7;&#x4E8E;&#x91CD;&#x542F;&#x8BE5; Pod&#x3002;</p>
<p>&#x56E0;&#x4E3A; Init &#x5BB9;&#x5668;&#x53EF;&#x80FD;&#x4F1A;&#x88AB;&#x91CD;&#x542F;&#x3001;&#x91CD;&#x8BD5;&#x6216;&#x8005;&#x91CD;&#x65B0;&#x6267;&#x884C;&#xFF0C;&#x6240;&#x4EE5; Init &#x5BB9;&#x5668;&#x7684;&#x4EE3;&#x7801;&#x5E94;&#x8BE5;&#x662F;&#x5E42;&#x7B49;&#x7684;&#x3002; &#x7279;&#x522B;&#x5730;&#xFF0C;&#x88AB;&#x5199;&#x5230; <code>EmptyDirs</code> &#x4E2D;&#x6587;&#x4EF6;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x5E94;&#x8BE5;&#x5BF9;&#x8F93;&#x51FA;&#x6587;&#x4EF6;&#x53EF;&#x80FD;&#x5DF2;&#x7ECF;&#x5B58;&#x5728;&#x505A;&#x597D;&#x51C6;&#x5907;&#x3002;</p>
<p>Init &#x5BB9;&#x5668;&#x5177;&#x6709;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x7684;&#x6240;&#x6709;&#x5B57;&#x6BB5;&#x3002; &#x9664;&#x4E86; <code>readinessProbe</code>&#xFF0C;&#x56E0;&#x4E3A; Init &#x5BB9;&#x5668;&#x65E0;&#x6CD5;&#x5B9A;&#x4E49;&#x4E0D;&#x540C;&#x4E8E;&#x5B8C;&#x6210;&#xFF08;completion&#xFF09;&#x7684;&#x5C31;&#x7EEA;&#xFF08;readiness&#xFF09;&#x7684;&#x4E4B;&#x5916;&#x7684;&#x5176;&#x4ED6;&#x72B6;&#x6001;&#x3002; &#x8FD9;&#x4F1A;&#x5728;&#x9A8C;&#x8BC1;&#x8FC7;&#x7A0B;&#x4E2D;&#x5F3A;&#x5236;&#x6267;&#x884C;&#x3002;</p>
<p>&#x5728; Pod &#x4E0A;&#x4F7F;&#x7528; <code>activeDeadlineSeconds</code>&#xFF0C;&#x5728;&#x5BB9;&#x5668;&#x4E0A;&#x4F7F;&#x7528; <code>livenessProbe</code>&#xFF0C;&#x8FD9;&#x6837;&#x80FD;&#x591F;&#x907F;&#x514D; Init &#x5BB9;&#x5668;&#x4E00;&#x76F4;&#x5931;&#x8D25;&#x3002; &#x8FD9;&#x5C31;&#x4E3A; Init &#x5BB9;&#x5668;&#x6D3B;&#x8DC3;&#x8BBE;&#x7F6E;&#x4E86;&#x4E00;&#x4E2A;&#x671F;&#x9650;&#x3002;</p>
<p>&#x5728; Pod &#x4E2D;&#x7684;&#x6BCF;&#x4E2A; app &#x548C; Init &#x5BB9;&#x5668;&#x7684;&#x540D;&#x79F0;&#x5FC5;&#x987B;&#x552F;&#x4E00;&#xFF1B;&#x4E0E;&#x4EFB;&#x4F55;&#x5176;&#x5B83;&#x5BB9;&#x5668;&#x5171;&#x4EAB;&#x540C;&#x4E00;&#x4E2A;&#x540D;&#x79F0;&#xFF0C;&#x4F1A;&#x5728;&#x9A8C;&#x8BC1;&#x65F6;&#x629B;&#x51FA;&#x9519;&#x8BEF;&#x3002;</p>
<h3 id="&#x8D44;&#x6E90;">&#x8D44;&#x6E90;</h3>
<p>&#x4E3A; Init &#x5BB9;&#x5668;&#x6307;&#x5B9A;&#x987A;&#x5E8F;&#x548C;&#x6267;&#x884C;&#x903B;&#x8F91;&#xFF0C;&#x4E0B;&#x9762;&#x5BF9;&#x8D44;&#x6E90;&#x4F7F;&#x7528;&#x7684;&#x89C4;&#x5219;&#x5C06;&#x88AB;&#x5E94;&#x7528;&#xFF1A;</p>
<ul>
<li>&#x5728;&#x6240;&#x6709; Init &#x5BB9;&#x5668;&#x4E0A;&#x5B9A;&#x4E49;&#x7684;&#xFF0C;&#x4EFB;&#x4F55;&#x7279;&#x6B8A;&#x8D44;&#x6E90;&#x8BF7;&#x6C42;&#x6216;&#x9650;&#x5236;&#x7684;&#x6700;&#x5927;&#x503C;&#xFF0C;&#x662F; <em>&#x6709;&#x6548;&#x521D;&#x59CB;&#x8BF7;&#x6C42;/&#x9650;&#x5236;</em></li>
<li><p>Pod &#x5BF9;&#x8D44;&#x6E90;&#x7684;&#x6709;&#x6548;&#x8BF7;&#x6C42;/&#x9650;&#x5236;&#x8981;&#x9AD8;&#x4E8E;&#xFF1A;</p>
<ul>
<li>&#x6240;&#x6709;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x5BF9;&#x67D0;&#x4E2A;&#x8D44;&#x6E90;&#x7684;&#x8BF7;&#x6C42;/&#x9650;&#x5236;&#x4E4B;&#x548C;</li>
<li>&#x5BF9;&#x67D0;&#x4E2A;&#x8D44;&#x6E90;&#x7684;&#x6709;&#x6548;&#x521D;&#x59CB;&#x8BF7;&#x6C42;/&#x9650;&#x5236;</li>
</ul>
</li>
<li><p>&#x57FA;&#x4E8E;&#x6709;&#x6548;&#x8BF7;&#x6C42;/&#x9650;&#x5236;&#x5B8C;&#x6210;&#x8C03;&#x5EA6;&#xFF0C;&#x8FD9;&#x610F;&#x5473;&#x7740; Init &#x5BB9;&#x5668;&#x80FD;&#x591F;&#x4E3A;&#x521D;&#x59CB;&#x5316;&#x9884;&#x7559;&#x8D44;&#x6E90;&#xFF0C;&#x8FD9;&#x4E9B;&#x8D44;&#x6E90;&#x5728; Pod &#x751F;&#x547D;&#x5468;&#x671F;&#x8FC7;&#x7A0B;&#x4E2D;&#x5E76;&#x6CA1;&#x6709;&#x88AB;&#x4F7F;&#x7528;&#x3002;</p>
</li>
<li><p>Pod &#x7684; <em>&#x6709;&#x6548; QoS &#x5C42;</em>&#xFF0C;&#x662F; Init &#x5BB9;&#x5668;&#x548C;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x76F8;&#x540C;&#x7684; QoS &#x5C42;&#x3002;</p>
</li>
</ul>
<p>&#x57FA;&#x4E8E;&#x6709;&#x6548; Pod &#x8BF7;&#x6C42;&#x548C;&#x9650;&#x5236;&#x6765;&#x5E94;&#x7528;&#x914D;&#x989D;&#x548C;&#x9650;&#x5236;&#x3002; Pod &#x7EA7;&#x522B;&#x7684; cgroups &#x662F;&#x57FA;&#x4E8E;&#x6709;&#x6548; Pod &#x8BF7;&#x6C42;&#x548C;&#x9650;&#x5236;&#xFF0C;&#x548C;&#x8C03;&#x5EA6;&#x5668;&#x76F8;&#x540C;&#x3002;</p>
<h3 id="pod-&#x91CD;&#x542F;&#x7684;&#x539F;&#x56E0;">Pod &#x91CD;&#x542F;&#x7684;&#x539F;&#x56E0;</h3>
<p>Pod &#x80FD;&#x591F;&#x91CD;&#x542F;&#xFF0C;&#x4F1A;&#x5BFC;&#x81F4; Init &#x5BB9;&#x5668;&#x91CD;&#x65B0;&#x6267;&#x884C;&#xFF0C;&#x4E3B;&#x8981;&#x6709;&#x5982;&#x4E0B;&#x51E0;&#x4E2A;&#x539F;&#x56E0;&#xFF1A;</p>
<ul>
<li>&#x7528;&#x6237;&#x66F4;&#x65B0; PodSpec &#x5BFC;&#x81F4; Init &#x5BB9;&#x5668;&#x955C;&#x50CF;&#x53D1;&#x751F;&#x6539;&#x53D8;&#x3002;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x955C;&#x50CF;&#x7684;&#x53D8;&#x66F4;&#x53EA;&#x4F1A;&#x91CD;&#x542F;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x3002;</li>
<li>Pod &#x57FA;&#x7840;&#x8BBE;&#x65BD;&#x5BB9;&#x5668;&#x88AB;&#x91CD;&#x542F;&#x3002;&#x8FD9;&#x4E0D;&#x591A;&#x89C1;&#xFF0C;&#x4F46;&#x67D0;&#x4E9B;&#x5177;&#x6709; root &#x6743;&#x9650;&#x53EF;&#x8BBF;&#x95EE; Node &#x7684;&#x4EBA;&#x53EF;&#x80FD;&#x4F1A;&#x8FD9;&#x6837;&#x505A;&#x3002;</li>
<li>&#x5F53; <code>restartPolicy</code> &#x8BBE;&#x7F6E;&#x4E3A; Always&#xFF0C;Pod &#x4E2D;&#x6240;&#x6709;&#x5BB9;&#x5668;&#x4F1A;&#x7EC8;&#x6B62;&#xFF0C;&#x5F3A;&#x5236;&#x91CD;&#x542F;&#xFF0C;&#x7531;&#x4E8E;&#x5783;&#x573E;&#x6536;&#x96C6;&#x5BFC;&#x81F4; Init &#x5BB9;&#x5668;&#x5B8C;&#x6574;&#x7684;&#x8BB0;&#x5F55;&#x4E22;&#x5931;&#x3002;</li>
</ul>
<h2 id="&#x652F;&#x6301;&#x4E0E;&#x517C;&#x5BB9;&#x6027;">&#x652F;&#x6301;&#x4E0E;&#x517C;&#x5BB9;&#x6027;</h2>
<p>Apiserver &#x7248;&#x672C;&#x4E3A; 1.6 &#x6216;&#x66F4;&#x9AD8;&#x7248;&#x672C;&#x7684;&#x96C6;&#x7FA4;&#xFF0C;&#x901A;&#x8FC7;&#x4F7F;&#x7528; <code>spec.initContainers</code> &#x5B57;&#x6BB5;&#x6765;&#x652F;&#x6301; Init &#x5BB9;&#x5668;&#x3002; &#x4E4B;&#x524D;&#x7684;&#x7248;&#x672C;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; alpha &#x548C; beta &#x6CE8;&#x89E3;&#x652F;&#x6301; Init &#x5BB9;&#x5668;&#x3002; <code>spec.initContainers</code> &#x5B57;&#x6BB5;&#x4E5F;&#x88AB;&#x52A0;&#x5165;&#x5230; alpha &#x548C; beta &#x6CE8;&#x89E3;&#x4E2D;&#xFF0C;&#x6240;&#x4EE5; Kubernetes 1.3.0 &#x7248;&#x672C;&#x6216;&#x66F4;&#x9AD8;&#x7248;&#x672C;&#x53EF;&#x4EE5;&#x6267;&#x884C; Init &#x5BB9;&#x5668;&#xFF0C;&#x5E76;&#x4E14; 1.6 &#x7248;&#x672C;&#x7684; apiserver &#x80FD;&#x591F;&#x5B89;&#x5168;&#x5730;&#x56DE;&#x9000;&#x5230; 1.5.x &#x7248;&#x672C;&#xFF0C;&#x800C;&#x4E0D;&#x4F1A;&#x4F7F;&#x5B58;&#x5728;&#x7684;&#x5DF2;&#x521B;&#x5EFA; Pod &#x5931;&#x53BB; Init &#x5BB9;&#x5668;&#x7684;&#x529F;&#x80FD;&#x3002;</p>
<p>&#x539F;&#x6587;&#x5730;&#x5740;&#xFF1A;<a href="https://k8smeetup.github.io/docs/concepts/workloads/pods/init-containers/" target="_blank">https://k8smeetup.github.io/docs/concepts/workloads/pods/init-containers/</a></p>
<p>&#x8BD1;&#x8005;&#xFF1A;<a href="https://github.com/shirdrn" target="_blank">shirdrn</a></p>
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