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<title>配置 Pod 的 liveness 和 readiness 探针 · Kubernetes Handbook - Kubernetes 中文指南/云原生应用架构实践手册 · Jimmy Song</title>
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<a href="https://jimmysong.io/awesome-cloud-native" target="_blank" class="custom-link">云原生开源项目大全</a>
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<a href="https://cloudnative.to" target="_blank" class="custom-link">云原生社区</a>
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<li class="header">前言</li>
<li class="chapter " data-level="1.1" data-path="../">
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<b>1.1.</b>
序言
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<li class="header">云原生</li>
<li class="chapter " data-level="2.1" data-path="../cloud-native/cloud-native-definition.html">
<a href="../cloud-native/cloud-native-definition.html">
<b>2.1.</b>
云原生的定义
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<li class="chapter " data-level="2.2" data-path="../cloud-native/cloud-native-philosophy.html">
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<b>2.2.</b>
云原生的设计哲学
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<li class="chapter " data-level="2.3" data-path="../cloud-native/kubernetes-history.html">
<a href="../cloud-native/kubernetes-history.html">
<b>2.3.</b>
Kubernetes 的诞生
</a>
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<li class="chapter " data-level="2.4" data-path="../cloud-native/kubernetes-and-cloud-native-app-overview.html">
<a href="../cloud-native/kubernetes-and-cloud-native-app-overview.html">
<b>2.4.</b>
Kubernetes 与云原生应用概览
</a>
</li>
<li class="chapter " data-level="2.5" data-path="../cloud-native/from-kubernetes-to-cloud-native.html">
<a href="../cloud-native/from-kubernetes-to-cloud-native.html">
<b>2.5.</b>
云原生应用之路 —— 从 Kubernetes 到云原生
</a>
</li>
<li class="chapter " data-level="2.6" data-path="../cloud-native/define-cloud-native-app.html">
<a href="../cloud-native/define-cloud-native-app.html">
<b>2.6.</b>
定义云原生应用
</a>
<ul class="articles">
<li class="chapter " data-level="2.6.1" data-path="../cloud-native/oam.html">
<a href="../cloud-native/oam.html">
<b>2.6.1.</b>
OAM
</a>
<ul class="articles">
<li class="chapter " data-level="2.6.1.1" data-path="../cloud-native/workload.html">
<a href="../cloud-native/workload.html">
<b>2.6.1.1.</b>
Workload
</a>
</li>
<li class="chapter " data-level="2.6.1.2" data-path="../cloud-native/component.html">
<a href="../cloud-native/component.html">
<b>2.6.1.2.</b>
Component
</a>
</li>
<li class="chapter " data-level="2.6.1.3" data-path="../cloud-native/trait.html">
<a href="../cloud-native/trait.html">
<b>2.6.1.3.</b>
Trait
</a>
</li>
<li class="chapter " data-level="2.6.1.4" data-path="../cloud-native/application-scope.html">
<a href="../cloud-native/application-scope.html">
<b>2.6.1.4.</b>
Application Scope
</a>
</li>
<li class="chapter " data-level="2.6.1.5" data-path="../cloud-native/application-configuration.html">
<a href="../cloud-native/application-configuration.html">
<b>2.6.1.5.</b>
Application Configuration
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2.6.2" data-path="../cloud-native/crossplane.html">
<a href="../cloud-native/crossplane.html">
<b>2.6.2.</b>
Crossplane
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2.7" data-path="../cloud-native/cloud-native-programming-languages.html">
<a href="../cloud-native/cloud-native-programming-languages.html">
<b>2.7.</b>
云原生平台配置语言
</a>
<ul class="articles">
<li class="chapter " data-level="2.7.1" data-path="../cloud-native/cloud-native-programming-language-ballerina.html">
<a href="../cloud-native/cloud-native-programming-language-ballerina.html">
<b>2.7.1.</b>
Ballerina
</a>
</li>
<li class="chapter " data-level="2.7.2" data-path="../cloud-native/cloud-native-programming-language-pulumi.html">
<a href="../cloud-native/cloud-native-programming-language-pulumi.html">
<b>2.7.2.</b>
Pulumi
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2.8" data-path="../cloud-native/the-future-of-cloud-native.html">
<a href="../cloud-native/the-future-of-cloud-native.html">
<b>2.8.</b>
云原生的未来
</a>
</li>
<li class="header">快速入门</li>
<li class="chapter " data-level="3.1" data-path="../cloud-native/quick-start.html">
<a href="../cloud-native/quick-start.html">
<b>3.1.</b>
云原生新手入门指南
</a>
</li>
<li class="chapter " data-level="3.2" data-path="../cloud-native/play-with-kubernetes.html">
<a href="../cloud-native/play-with-kubernetes.html">
<b>3.2.</b>
Play with Kubernetes
</a>
</li>
<li class="chapter " data-level="3.3" data-path="../cloud-native/cloud-native-local-quick-start.html">
<a href="../cloud-native/cloud-native-local-quick-start.html">
<b>3.3.</b>
快速部署一个云原生本地实验环境
</a>
</li>
<li class="chapter " data-level="3.4" data-path="../cloud-native/setup-kubernetes-with-rancher-and-aliyun.html">
<a href="../cloud-native/setup-kubernetes-with-rancher-and-aliyun.html">
<b>3.4.</b>
使用 Rancher 在阿里云上部署 Kubenretes 集群
</a>
</li>
<li class="header">概念与原理</li>
<li class="chapter " data-level="4.1" data-path="../concepts/">
<a href="../concepts/">
<b>4.1.</b>
Kubernetes 架构
</a>
<ul class="articles">
<li class="chapter " data-level="4.1.1" data-path="../concepts/concepts.html">
<a href="../concepts/concepts.html">
<b>4.1.1.</b>
Kubernetes 的设计理念
</a>
</li>
<li class="chapter " data-level="4.1.2" data-path="../concepts/etcd.html">
<a href="../concepts/etcd.html">
<b>4.1.2.</b>
Etcd 解析
</a>
</li>
<li class="chapter " data-level="4.1.3" data-path="../concepts/open-interfaces.html">
<a href="../concepts/open-interfaces.html">
<b>4.1.3.</b>
开放接口
</a>
<ul class="articles">
<li class="chapter " data-level="4.1.3.1" data-path="../concepts/cri.html">
<a href="../concepts/cri.html">
<b>4.1.3.1.</b>
容器运行时接口CRI
</a>
</li>
<li class="chapter " data-level="4.1.3.2" data-path="../concepts/cni.html">
<a href="../concepts/cni.html">
<b>4.1.3.2.</b>
容器网络接口CNI
</a>
</li>
<li class="chapter " data-level="4.1.3.3" data-path="../concepts/csi.html">
<a href="../concepts/csi.html">
<b>4.1.3.3.</b>
容器存储接口CSI
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.1.4" data-path="../concepts/objects.html">
<a href="../concepts/objects.html">
<b>4.1.4.</b>
Kubernetes 中的资源对象
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.2" data-path="../concepts/pod-state-and-lifecycle.html">
<a href="../concepts/pod-state-and-lifecycle.html">
<b>4.2.</b>
Pod 状态与生命周期管理
</a>
<ul class="articles">
<li class="chapter " data-level="4.2.1" data-path="../concepts/pod-overview.html">
<a href="../concepts/pod-overview.html">
<b>4.2.1.</b>
Pod 概览
</a>
</li>
<li class="chapter " data-level="4.2.2" data-path="../concepts/pod.html">
<a href="../concepts/pod.html">
<b>4.2.2.</b>
Pod 解析
</a>
</li>
<li class="chapter " data-level="4.2.3" data-path="../concepts/init-containers.html">
<a href="../concepts/init-containers.html">
<b>4.2.3.</b>
Init 容器
</a>
</li>
<li class="chapter " data-level="4.2.4" data-path="../concepts/pause-container.html">
<a href="../concepts/pause-container.html">
<b>4.2.4.</b>
Pause 容器
</a>
</li>
<li class="chapter " data-level="4.2.5" data-path="../concepts/pod-security-policy.html">
<a href="../concepts/pod-security-policy.html">
<b>4.2.5.</b>
Pod 安全策略
</a>
</li>
<li class="chapter " data-level="4.2.6" data-path="../concepts/pod-lifecycle.html">
<a href="../concepts/pod-lifecycle.html">
<b>4.2.6.</b>
Pod 的生命周期
</a>
</li>
<li class="chapter " data-level="4.2.7" data-path="../concepts/pod-hook.html">
<a href="../concepts/pod-hook.html">
<b>4.2.7.</b>
Pod Hook
</a>
</li>
<li class="chapter " data-level="4.2.8" data-path="../concepts/pod-preset.html">
<a href="../concepts/pod-preset.html">
<b>4.2.8.</b>
Pod Preset
</a>
</li>
<li class="chapter " data-level="4.2.9" data-path="../concepts/pod-disruption-budget.html">
<a href="../concepts/pod-disruption-budget.html">
<b>4.2.9.</b>
Pod 中断与 PDBPod 中断预算)
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.3" data-path="../concepts/cluster.html">
<a href="../concepts/cluster.html">
<b>4.3.</b>
集群资源管理
</a>
<ul class="articles">
<li class="chapter " data-level="4.3.1" data-path="../concepts/node.html">
<a href="../concepts/node.html">
<b>4.3.1.</b>
Node
</a>
</li>
<li class="chapter " data-level="4.3.2" data-path="../concepts/namespace.html">
<a href="../concepts/namespace.html">
<b>4.3.2.</b>
Namespace
</a>
</li>
<li class="chapter " data-level="4.3.3" data-path="../concepts/label.html">
<a href="../concepts/label.html">
<b>4.3.3.</b>
Label
</a>
</li>
<li class="chapter " data-level="4.3.4" data-path="../concepts/annotation.html">
<a href="../concepts/annotation.html">
<b>4.3.4.</b>
Annotation
</a>
</li>
<li class="chapter " data-level="4.3.5" data-path="../concepts/taint-and-toleration.html">
<a href="../concepts/taint-and-toleration.html">
<b>4.3.5.</b>
Taint 和 Toleration污点和容忍
</a>
</li>
<li class="chapter " data-level="4.3.6" data-path="../concepts/garbage-collection.html">
<a href="../concepts/garbage-collection.html">
<b>4.3.6.</b>
垃圾收集
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.4" data-path="../concepts/controllers.html">
<a href="../concepts/controllers.html">
<b>4.4.</b>
控制器
</a>
<ul class="articles">
<li class="chapter " data-level="4.4.1" data-path="../concepts/deployment.html">
<a href="../concepts/deployment.html">
<b>4.4.1.</b>
Deployment
</a>
</li>
<li class="chapter " data-level="4.4.2" data-path="../concepts/statefulset.html">
<a href="../concepts/statefulset.html">
<b>4.4.2.</b>
StatefulSet
</a>
</li>
<li class="chapter " data-level="4.4.3" data-path="../concepts/daemonset.html">
<a href="../concepts/daemonset.html">
<b>4.4.3.</b>
DaemonSet
</a>
</li>
<li class="chapter " data-level="4.4.4" data-path="../concepts/replicaset.html">
<a href="../concepts/replicaset.html">
<b>4.4.4.</b>
ReplicationController 和 ReplicaSet
</a>
</li>
<li class="chapter " data-level="4.4.5" data-path="../concepts/job.html">
<a href="../concepts/job.html">
<b>4.4.5.</b>
Job
</a>
</li>
<li class="chapter " data-level="4.4.6" data-path="../concepts/cronjob.html">
<a href="../concepts/cronjob.html">
<b>4.4.6.</b>
CronJob
</a>
</li>
<li class="chapter " data-level="4.4.7" data-path="../concepts/horizontal-pod-autoscaling.html">
<a href="../concepts/horizontal-pod-autoscaling.html">
<b>4.4.7.</b>
Horizontal Pod Autoscaling
</a>
<ul class="articles">
<li class="chapter " data-level="4.4.7.1" data-path="../concepts/custom-metrics-hpa.html">
<a href="../concepts/custom-metrics-hpa.html">
<b>4.4.7.1.</b>
自定义指标 HPA
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.4.8" data-path="../concepts/admission-controller.html">
<a href="../concepts/admission-controller.html">
<b>4.4.8.</b>
准入控制器Admission Controller
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.5" data-path="../concepts/service-discovery.html">
<a href="../concepts/service-discovery.html">
<b>4.5.</b>
服务发现与路由
</a>
<ul class="articles">
<li class="chapter " data-level="4.5.1" data-path="../concepts/service.html">
<a href="../concepts/service.html">
<b>4.5.1.</b>
Service
</a>
</li>
<li class="chapter " data-level="4.5.2" data-path="../concepts/topology-aware-routing.html">
<a href="../concepts/topology-aware-routing.html">
<b>4.5.2.</b>
拓扑感知路由
</a>
</li>
<li class="chapter " data-level="4.5.3" data-path="../concepts/ingress.html">
<a href="../concepts/ingress.html">
<b>4.5.3.</b>
Ingress
</a>
<ul class="articles">
<li class="chapter " data-level="4.5.3.1" data-path="../concepts/traefik-ingress-controller.html">
<a href="../concepts/traefik-ingress-controller.html">
<b>4.5.3.1.</b>
Traefik Ingress Controller
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.5.4" data-path="../concepts/gateway.html">
<a href="../concepts/gateway.html">
<b>4.5.4.</b>
Gateway
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.6" data-path="../concepts/authentication-and-permission.html">
<a href="../concepts/authentication-and-permission.html">
<b>4.6.</b>
身份与权限控制
</a>
<ul class="articles">
<li class="chapter " data-level="4.6.1" data-path="../concepts/serviceaccount.html">
<a href="../concepts/serviceaccount.html">
<b>4.6.1.</b>
ServiceAccount
</a>
</li>
<li class="chapter " data-level="4.6.2" data-path="../concepts/rbac.html">
<a href="../concepts/rbac.html">
<b>4.6.2.</b>
基于角色的访问控制RBAC
</a>
</li>
<li class="chapter " data-level="4.6.3" data-path="../concepts/network-policy.html">
<a href="../concepts/network-policy.html">
<b>4.6.3.</b>
NetworkPolicy
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.7" data-path="../concepts/networking.html">
<a href="../concepts/networking.html">
<b>4.7.</b>
网络
</a>
<ul class="articles">
<li class="chapter " data-level="4.7.1" data-path="../concepts/flannel.html">
<a href="../concepts/flannel.html">
<b>4.7.1.</b>
扁平网络 Flannel
</a>
</li>
<li class="chapter " data-level="4.7.2" data-path="../concepts/calico.html">
<a href="../concepts/calico.html">
<b>4.7.2.</b>
非 Overlay 扁平网络 Calico
</a>
</li>
<li class="chapter " data-level="4.7.3" data-path="../concepts/cilium.html">
<a href="../concepts/cilium.html">
<b>4.7.3.</b>
基于 eBPF 的网络 Cilium
</a>
<ul class="articles">
<li class="chapter " data-level="4.7.3.1" data-path="../concepts/cilium-concepts.html">
<a href="../concepts/cilium-concepts.html">
<b>4.7.3.1.</b>
Cilium 架构设计与概念解析
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="4.8" data-path="../concepts/storage.html">
<a href="../concepts/storage.html">
<b>4.8.</b>
存储
</a>
<ul class="articles">
<li class="chapter " data-level="4.8.1" data-path="../concepts/secret.html">
<a href="../concepts/secret.html">
<b>4.8.1.</b>
Secret
</a>
</li>
<li class="chapter " data-level="4.8.2" data-path="../concepts/configmap.html">
<a href="../concepts/configmap.html">
<b>4.8.2.</b>
ConfigMap
</a>
<ul class="articles">
<li class="chapter " data-level="4.8.2.1" data-path="../concepts/configmap-hot-update.html">
<a href="../concepts/configmap-hot-update.html">
<b>4.8.2.1.</b>
ConfigMap 的热更新
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.8.3" data-path="../concepts/volume.html">
<a href="../concepts/volume.html">
<b>4.8.3.</b>
Volume
</a>
</li>
<li class="chapter " data-level="4.8.4" data-path="../concepts/persistent-volume.html">
<a href="../concepts/persistent-volume.html">
<b>4.8.4.</b>
持久化卷Persistent Volume
</a>
</li>
<li class="chapter " data-level="4.8.5" data-path="../concepts/storageclass.html">
<a href="../concepts/storageclass.html">
<b>4.8.5.</b>
Storage Class
</a>
</li>
<li class="chapter " data-level="4.8.6" data-path="../concepts/local-persistent-storage.html">
<a href="../concepts/local-persistent-storage.html">
<b>4.8.6.</b>
本地持久化存储
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.9" data-path="../concepts/extension.html">
<a href="../concepts/extension.html">
<b>4.9.</b>
集群扩展
</a>
<ul class="articles">
<li class="chapter " data-level="4.9.1" data-path="../concepts/custom-resource.html">
<a href="../concepts/custom-resource.html">
<b>4.9.1.</b>
使用自定义资源扩展 API
</a>
</li>
<li class="chapter " data-level="4.9.2" data-path="../concepts/crd.html">
<a href="../concepts/crd.html">
<b>4.9.2.</b>
使用 CRD 扩展 Kubernetes API
</a>
</li>
<li class="chapter " data-level="4.9.3" data-path="../concepts/aggregated-api-server.html">
<a href="../concepts/aggregated-api-server.html">
<b>4.9.3.</b>
Aggregated API Server
</a>
</li>
<li class="chapter " data-level="4.9.4" data-path="../concepts/apiservice.html">
<a href="../concepts/apiservice.html">
<b>4.9.4.</b>
APIService
</a>
</li>
<li class="chapter " data-level="4.9.5" data-path="../concepts/service-catalog.html">
<a href="../concepts/service-catalog.html">
<b>4.9.5.</b>
服务目录Service Catalog
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.10" data-path="../concepts/multicluster.html">
<a href="../concepts/multicluster.html">
<b>4.10.</b>
多集群管理
</a>
<ul class="articles">
<li class="chapter " data-level="4.10.1" data-path="../concepts/multi-cluster-services-api.html">
<a href="../concepts/multi-cluster-services-api.html">
<b>4.10.1.</b>
多集群服务 APIMulti-Cluster Services API
</a>
</li>
<li class="chapter " data-level="4.10.2" data-path="../practice/federation.html">
<a href="../practice/federation.html">
<b>4.10.2.</b>
集群联邦Cluster Federation
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="4.11" data-path="../concepts/scheduling.html">
<a href="../concepts/scheduling.html">
<b>4.11.</b>
资源调度
</a>
<ul class="articles">
<li class="chapter " data-level="4.11.1" data-path="../concepts/qos.html">
<a href="../concepts/qos.html">
<b>4.11.1.</b>
服务质量等级QoS
</a>
</li>
</ul>
</li>
<li class="header">用户指南</li>
<li class="chapter " data-level="5.1" data-path="./">
<a href="./">
<b>5.1.</b>
用户指南概览
</a>
</li>
<li class="chapter " data-level="5.2" data-path="resource-configuration.html">
<a href="resource-configuration.html">
<b>5.2.</b>
资源对象配置
</a>
<ul class="articles">
<li class="chapter active" data-level="5.2.1" data-path="configure-liveness-readiness-probes.html">
<a href="configure-liveness-readiness-probes.html">
<b>5.2.1.</b>
配置 Pod 的 liveness 和 readiness 探针
</a>
</li>
<li class="chapter " data-level="5.2.2" data-path="configure-pod-service-account.html">
<a href="configure-pod-service-account.html">
<b>5.2.2.</b>
配置 Pod 的 Service Account
</a>
</li>
<li class="chapter " data-level="5.2.3" data-path="secret-configuration.html">
<a href="secret-configuration.html">
<b>5.2.3.</b>
Secret 配置
</a>
</li>
<li class="chapter " data-level="5.2.4" data-path="resource-quota-management.html">
<a href="resource-quota-management.html">
<b>5.2.4.</b>
管理 namespace 中的资源配额
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.3" data-path="command-usage.html">
<a href="command-usage.html">
<b>5.3.</b>
命令使用
</a>
<ul class="articles">
<li class="chapter " data-level="5.3.1" data-path="docker-cli-to-kubectl.html">
<a href="docker-cli-to-kubectl.html">
<b>5.3.1.</b>
Docker 用户过渡到 kubectl 命令行指南
</a>
</li>
<li class="chapter " data-level="5.3.2" data-path="using-kubectl.html">
<a href="using-kubectl.html">
<b>5.3.2.</b>
kubectl 命令概览
</a>
</li>
<li class="chapter " data-level="5.3.3" data-path="kubectl-cheatsheet.html">
<a href="kubectl-cheatsheet.html">
<b>5.3.3.</b>
kubectl 命令技巧大全
</a>
</li>
<li class="chapter " data-level="5.3.4" data-path="using-etcdctl-to-access-kubernetes-data.html">
<a href="using-etcdctl-to-access-kubernetes-data.html">
<b>5.3.4.</b>
使用 etcdctl 访问 Kubernetes 数据
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.4" data-path="cluster-security-management.html">
<a href="cluster-security-management.html">
<b>5.4.</b>
集群安全性管理
</a>
<ul class="articles">
<li class="chapter " data-level="5.4.1" data-path="managing-tls-in-a-cluster.html">
<a href="managing-tls-in-a-cluster.html">
<b>5.4.1.</b>
管理集群中的 TLS
</a>
</li>
<li class="chapter " data-level="5.4.2" data-path="kubelet-authentication-authorization.html">
<a href="kubelet-authentication-authorization.html">
<b>5.4.2.</b>
kubelet 的认证授权
</a>
</li>
<li class="chapter " data-level="5.4.3" data-path="tls-bootstrapping.html">
<a href="tls-bootstrapping.html">
<b>5.4.3.</b>
TLS Bootstrap
</a>
</li>
<li class="chapter " data-level="5.4.4" data-path="kubectl-user-authentication-authorization.html">
<a href="kubectl-user-authentication-authorization.html">
<b>5.4.4.</b>
创建用户认证授权的 kubeconfig 文件
</a>
</li>
<li class="chapter " data-level="5.4.5" data-path="ip-masq-agent.html">
<a href="ip-masq-agent.html">
<b>5.4.5.</b>
IP 伪装代理
</a>
</li>
<li class="chapter " data-level="5.4.6" data-path="auth-with-kubeconfig-or-token.html">
<a href="auth-with-kubeconfig-or-token.html">
<b>5.4.6.</b>
使用 kubeconfig 或 token 进行用户身份认证
</a>
</li>
<li class="chapter " data-level="5.4.7" data-path="authentication.html">
<a href="authentication.html">
<b>5.4.7.</b>
Kubernetes 中的用户与身份认证授权
</a>
</li>
<li class="chapter " data-level="5.4.8" data-path="kubernetes-security-best-practice.html">
<a href="kubernetes-security-best-practice.html">
<b>5.4.8.</b>
Kubernetes 集群安全性配置最佳实践
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.5" data-path="access-kubernetes-cluster.html">
<a href="access-kubernetes-cluster.html">
<b>5.5.</b>
访问 Kubernetes 集群
</a>
<ul class="articles">
<li class="chapter " data-level="5.5.1" data-path="access-cluster.html">
<a href="access-cluster.html">
<b>5.5.1.</b>
访问集群
</a>
</li>
<li class="chapter " data-level="5.5.2" data-path="authenticate-across-clusters-kubeconfig.html">
<a href="authenticate-across-clusters-kubeconfig.html">
<b>5.5.2.</b>
使用 kubeconfig 文件配置跨集群认证
</a>
</li>
<li class="chapter " data-level="5.5.3" data-path="connecting-to-applications-port-forward.html">
<a href="connecting-to-applications-port-forward.html">
<b>5.5.3.</b>
通过端口转发访问集群中的应用程序
</a>
</li>
<li class="chapter " data-level="5.5.4" data-path="service-access-application-cluster.html">
<a href="service-access-application-cluster.html">
<b>5.5.4.</b>
使用 service 访问群集中的应用程序
</a>
</li>
<li class="chapter " data-level="5.5.5" data-path="accessing-kubernetes-pods-from-outside-of-the-cluster.html">
<a href="accessing-kubernetes-pods-from-outside-of-the-cluster.html">
<b>5.5.5.</b>
从外部访问 Kubernetes 中的 Pod
</a>
</li>
<li class="chapter " data-level="5.5.6" data-path="kubernetes-desktop-client.html">
<a href="kubernetes-desktop-client.html">
<b>5.5.6.</b>
Lens - Kubernetes IDE
</a>
</li>
<li class="chapter " data-level="5.5.7" data-path="kubernator-kubernetes-ui.html">
<a href="kubernator-kubernetes-ui.html">
<b>5.5.7.</b>
Kubernator - 更底层的 Kubernetes UI
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5.6" data-path="application-development-deployment-flow.html">
<a href="application-development-deployment-flow.html">
<b>5.6.</b>
在 Kubernetes 中开发部署应用
</a>
<ul class="articles">
<li class="chapter " data-level="5.6.1" data-path="deploy-applications-in-kubernetes.html">
<a href="deploy-applications-in-kubernetes.html">
<b>5.6.1.</b>
适用于 Kubernetes 的应用开发部署流程
</a>
</li>
<li class="chapter " data-level="5.6.2" data-path="migrating-hadoop-yarn-to-kubernetes.html">
<a href="migrating-hadoop-yarn-to-kubernetes.html">
<b>5.6.2.</b>
迁移传统应用到 Kubernetes 中 —— 以 Hadoop YARN 为例
</a>
</li>
<li class="chapter " data-level="5.6.3" data-path="using-statefulset.html">
<a href="using-statefulset.html">
<b>5.6.3.</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="6.1" data-path="../practice/">
<a href="../practice/">
<b>6.1.</b>
最佳实践概览
</a>
</li>
<li class="chapter " data-level="6.2" data-path="../practice/install-kubernetes-on-centos.html">
<a href="../practice/install-kubernetes-on-centos.html">
<b>6.2.</b>
在 CentOS 上部署 Kubernetes 集群
</a>
<ul class="articles">
<li class="chapter " data-level="6.2.1" data-path="../practice/create-tls-and-secret-key.html">
<a href="../practice/create-tls-and-secret-key.html">
<b>6.2.1.</b>
创建 TLS 证书和秘钥
</a>
</li>
<li class="chapter " data-level="6.2.2" data-path="../practice/create-kubeconfig.html">
<a href="../practice/create-kubeconfig.html">
<b>6.2.2.</b>
创建 kubeconfig 文件
</a>
</li>
<li class="chapter " data-level="6.2.3" data-path="../practice/etcd-cluster-installation.html">
<a href="../practice/etcd-cluster-installation.html">
<b>6.2.3.</b>
创建高可用 etcd 集群
</a>
</li>
<li class="chapter " data-level="6.2.4" data-path="../practice/kubectl-installation.html">
<a href="../practice/kubectl-installation.html">
<b>6.2.4.</b>
安装 kubectl 命令行工具
</a>
</li>
<li class="chapter " data-level="6.2.5" data-path="../practice/master-installation.html">
<a href="../practice/master-installation.html">
<b>6.2.5.</b>
部署 master 节点
</a>
</li>
<li class="chapter " data-level="6.2.6" data-path="../practice/flannel-installation.html">
<a href="../practice/flannel-installation.html">
<b>6.2.6.</b>
安装 flannel 网络插件
</a>
</li>
<li class="chapter " data-level="6.2.7" data-path="../practice/node-installation.html">
<a href="../practice/node-installation.html">
<b>6.2.7.</b>
部署 node 节点
</a>
</li>
<li class="chapter " data-level="6.2.8" data-path="../practice/kubedns-addon-installation.html">
<a href="../practice/kubedns-addon-installation.html">
<b>6.2.8.</b>
安装 kubedns 插件
</a>
</li>
<li class="chapter " data-level="6.2.9" data-path="../practice/dashboard-addon-installation.html">
<a href="../practice/dashboard-addon-installation.html">
<b>6.2.9.</b>
安装 dashboard 插件
</a>
</li>
<li class="chapter " data-level="6.2.10" data-path="../practice/heapster-addon-installation.html">
<a href="../practice/heapster-addon-installation.html">
<b>6.2.10.</b>
安装 heapster 插件
</a>
</li>
<li class="chapter " data-level="6.2.11" data-path="../practice/efk-addon-installation.html">
<a href="../practice/efk-addon-installation.html">
<b>6.2.11.</b>
安装 EFK 插件
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.3" data-path="../practice/install-kubernetes-with-kubeadm.html">
<a href="../practice/install-kubernetes-with-kubeadm.html">
<b>6.3.</b>
生产级的 Kubernetes 简化管理工具 kubeadm
</a>
<ul class="articles">
<li class="chapter " data-level="6.3.1" data-path="../practice/install-kubernetes-on-ubuntu-server-16.04-with-kubeadm.html">
<a href="../practice/install-kubernetes-on-ubuntu-server-16.04-with-kubeadm.html">
<b>6.3.1.</b>
使用 kubeadm 在 Ubuntu Server 16.04 上快速构建测试集群
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.4" data-path="../practice/service-discovery-and-loadbalancing.html">
<a href="../practice/service-discovery-and-loadbalancing.html">
<b>6.4.</b>
服务发现与负载均衡
</a>
<ul class="articles">
<li class="chapter " data-level="6.4.1" data-path="../practice/traefik-ingress-installation.html">
<a href="../practice/traefik-ingress-installation.html">
<b>6.4.1.</b>
安装 Traefik ingress
</a>
</li>
<li class="chapter " data-level="6.4.2" data-path="../practice/distributed-load-test.html">
<a href="../practice/distributed-load-test.html">
<b>6.4.2.</b>
分布式负载测试
</a>
</li>
<li class="chapter " data-level="6.4.3" data-path="../practice/network-and-cluster-perfermance-test.html">
<a href="../practice/network-and-cluster-perfermance-test.html">
<b>6.4.3.</b>
网络和集群性能测试
</a>
</li>
<li class="chapter " data-level="6.4.4" data-path="../practice/edge-node-configuration.html">
<a href="../practice/edge-node-configuration.html">
<b>6.4.4.</b>
边缘节点配置
</a>
</li>
<li class="chapter " data-level="6.4.5" data-path="../practice/nginx-ingress-installation.html">
<a href="../practice/nginx-ingress-installation.html">
<b>6.4.5.</b>
安装 Nginx ingress
</a>
</li>
<li class="chapter " data-level="6.4.6" data-path="../practice/dns-installation.html">
<a href="../practice/dns-installation.html">
<b>6.4.6.</b>
安装配置 DNS
</a>
<ul class="articles">
<li class="chapter " data-level="6.4.6.1" data-path="../practice/configuring-dns.html">
<a href="../practice/configuring-dns.html">
<b>6.4.6.1.</b>
安装配置 Kube-dns
</a>
</li>
<li class="chapter " data-level="6.4.6.2" data-path="../practice/coredns.html">
<a href="../practice/coredns.html">
<b>6.4.6.2.</b>
安装配置 CoreDNS
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="6.5" data-path="../practice/operation.html">
<a href="../practice/operation.html">
<b>6.5.</b>
运维管理
</a>
<ul class="articles">
<li class="chapter " data-level="6.5.1" data-path="../practice/master-ha.html">
<a href="../practice/master-ha.html">
<b>6.5.1.</b>
Master 节点高可用
</a>
</li>
<li class="chapter " data-level="6.5.2" data-path="../practice/service-rolling-update.html">
<a href="../practice/service-rolling-update.html">
<b>6.5.2.</b>
服务滚动升级
</a>
</li>
<li class="chapter " data-level="6.5.3" data-path="../practice/app-log-collection.html">
<a href="../practice/app-log-collection.html">
<b>6.5.3.</b>
应用日志收集
</a>
</li>
<li class="chapter " data-level="6.5.4" data-path="../practice/configuration-best-practice.html">
<a href="../practice/configuration-best-practice.html">
<b>6.5.4.</b>
配置最佳实践
</a>
</li>
<li class="chapter " data-level="6.5.5" data-path="../practice/monitor.html">
<a href="../practice/monitor.html">
<b>6.5.5.</b>
集群及应用监控
</a>
</li>
<li class="chapter " data-level="6.5.6" data-path="../practice/data-persistence-problem.html">
<a href="../practice/data-persistence-problem.html">
<b>6.5.6.</b>
数据持久化问题
</a>
</li>
<li class="chapter " data-level="6.5.7" data-path="../practice/manage-compute-resources-container.html">
<a href="../practice/manage-compute-resources-container.html">
<b>6.5.7.</b>
管理容器的计算资源
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.6" data-path="../practice/storage.html">
<a href="../practice/storage.html">
<b>6.6.</b>
存储管理
</a>
<ul class="articles">
<li class="chapter " data-level="6.6.1" data-path="../practice/glusterfs.html">
<a href="../practice/glusterfs.html">
<b>6.6.1.</b>
GlusterFS
</a>
<ul class="articles">
<li class="chapter " data-level="6.6.1.1" data-path="../practice/using-glusterfs-for-persistent-storage.html">
<a href="../practice/using-glusterfs-for-persistent-storage.html">
<b>6.6.1.1.</b>
使用 GlusterFS 做持久化存储
</a>
</li>
<li class="chapter " data-level="6.6.1.2" data-path="../practice/using-heketi-gluster-for-persistent-storage.html">
<a href="../practice/using-heketi-gluster-for-persistent-storage.html">
<b>6.6.1.2.</b>
使用 Heketi 作为 Kubernetes 的持久存储 GlusterFS 的 external provisioner
</a>
</li>
<li class="chapter " data-level="6.6.1.3" data-path="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
<a href="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
<b>6.6.1.3.</b>
在 OpenShift 中使用 GlusterFS 做持久化存储
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.6.2" data-path="../practice/glusterd-2.0.html">
<a href="../practice/glusterd-2.0.html">
<b>6.6.2.</b>
GlusterD-2.0
</a>
</li>
<li class="chapter " data-level="6.6.3" data-path="../practice/ceph.html">
<a href="../practice/ceph.html">
<b>6.6.3.</b>
Ceph
</a>
<ul class="articles">
<li class="chapter " data-level="6.6.3.1" data-path="../practice/ceph-helm-install-guide-zh.html">
<a href="../practice/ceph-helm-install-guide-zh.html">
<b>6.6.3.1.</b>
用 Helm 托管安装 Ceph 集群并提供后端存储
</a>
</li>
<li class="chapter " data-level="6.6.3.2" data-path="../practice/using-ceph-for-persistent-storage.html">
<a href="../practice/using-ceph-for-persistent-storage.html">
<b>6.6.3.2.</b>
使用 Ceph 做持久化存储
</a>
</li>
<li class="chapter " data-level="6.6.3.3" data-path="../practice/rbd-provisioner.html">
<a href="../practice/rbd-provisioner.html">
<b>6.6.3.3.</b>
使用 rbd-provisioner 提供 rbd 持久化存储
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.6.4" data-path="../practice/openebs.html">
<a href="../practice/openebs.html">
<b>6.6.4.</b>
OpenEBS
</a>
<ul class="articles">
<li class="chapter " data-level="6.6.4.1" data-path="../practice/using-openebs-for-persistent-storage.html">
<a href="../practice/using-openebs-for-persistent-storage.html">
<b>6.6.4.1.</b>
使用 OpenEBS 做持久化存储
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.6.5" data-path="../practice/rook.html">
<a href="../practice/rook.html">
<b>6.6.5.</b>
Rook
</a>
</li>
<li class="chapter " data-level="6.6.6" data-path="../practice/nfs.html">
<a href="../practice/nfs.html">
<b>6.6.6.</b>
NFS
</a>
<ul class="articles">
<li class="chapter " data-level="6.6.6.1" data-path="../practice/using-nfs-for-persistent-storage.html">
<a href="../practice/using-nfs-for-persistent-storage.html">
<b>6.6.6.1.</b>
利用 NFS 动态提供 Kubernetes 后端存储卷
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="6.7" data-path="../practice/monitoring.html">
<a href="../practice/monitoring.html">
<b>6.7.</b>
集群与应用监控
</a>
<ul class="articles">
<li class="chapter " data-level="6.7.1" data-path="../practice/heapster.html">
<a href="../practice/heapster.html">
<b>6.7.1.</b>
Heapster
</a>
<ul class="articles">
<li class="chapter " data-level="6.7.1.1" data-path="../practice/using-heapster-to-get-object-metrics.html">
<a href="../practice/using-heapster-to-get-object-metrics.html">
<b>6.7.1.1.</b>
使用 Heapster 获取集群和对象的 metric 数据
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.7.2" data-path="../practice/prometheus.html">
<a href="../practice/prometheus.html">
<b>6.7.2.</b>
Prometheus
</a>
<ul class="articles">
<li class="chapter " data-level="6.7.2.1" data-path="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
<a href="../practice/using-prometheus-to-monitor-kuberentes-cluster.html">
<b>6.7.2.1.</b>
使用 Prometheus 监控 Kubernetes 集群
</a>
</li>
<li class="chapter " data-level="6.7.2.2" data-path="../practice/promql.html">
<a href="../practice/promql.html">
<b>6.7.2.2.</b>
Prometheus 查询语言 PromQL 使用说明
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="6.8" data-path="../practice/distributed-tracing.html">
<a href="../practice/distributed-tracing.html">
<b>6.8.</b>
分布式追踪
</a>
<ul class="articles">
<li class="chapter " data-level="6.8.1" data-path="../practice/opentracing.html">
<a href="../practice/opentracing.html">
<b>6.8.1.</b>
OpenTracing
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.9" data-path="../practice/services-management-tool.html">
<a href="../practice/services-management-tool.html">
<b>6.9.</b>
服务编排管理
</a>
<ul class="articles">
<li class="chapter " data-level="6.9.1" data-path="../practice/helm.html">
<a href="../practice/helm.html">
<b>6.9.1.</b>
使用 Helm 管理 Kubernetes 应用
</a>
</li>
<li class="chapter " data-level="6.9.2" data-path="../practice/create-private-charts-repo.html">
<a href="../practice/create-private-charts-repo.html">
<b>6.9.2.</b>
构建私有 Chart 仓库
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.10" data-path="../practice/ci-cd.html">
<a href="../practice/ci-cd.html">
<b>6.10.</b>
持续集成与发布CI/CD
</a>
<ul class="articles">
<li class="chapter " data-level="6.10.1" data-path="../practice/jenkins-ci-cd.html">
<a href="../practice/jenkins-ci-cd.html">
<b>6.10.1.</b>
使用 Jenkins 进行持续集成与发布
</a>
</li>
<li class="chapter " data-level="6.10.2" data-path="../practice/drone-ci-cd.html">
<a href="../practice/drone-ci-cd.html">
<b>6.10.2.</b>
使用 Drone 进行持续集成与发布
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.11" data-path="../practice/update-and-upgrade.html">
<a href="../practice/update-and-upgrade.html">
<b>6.11.</b>
更新与升级
</a>
<ul class="articles">
<li class="chapter " data-level="6.11.1" data-path="../practice/manually-upgrade.html">
<a href="../practice/manually-upgrade.html">
<b>6.11.1.</b>
手动升级 Kubernetes 集群
</a>
</li>
<li class="chapter " data-level="6.11.2" data-path="../practice/dashboard-upgrade.html">
<a href="../practice/dashboard-upgrade.html">
<b>6.11.2.</b>
升级 dashboard
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6.12" data-path="../practice/controller-extended.html">
<a href="../practice/controller-extended.html">
<b>6.12.</b>
扩展控制器
</a>
<ul class="articles">
<li class="chapter " data-level="6.12.1" data-path="../practice/openkruise.html">
<a href="../practice/openkruise.html">
<b>6.12.1.</b>
OpenKruise
</a>
<ul class="articles">
<li class="chapter " data-level="6.12.1.1" data-path="../practice/in-place-update.html">
<a href="../practice/in-place-update.html">
<b>6.12.1.1.</b>
原地升级
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="6.13" data-path="../practice/security-policy.html">
<a href="../practice/security-policy.html">
<b>6.13.</b>
安全策略
</a>
<ul class="articles">
<li class="chapter " data-level="6.13.1" data-path="../practice/open-policy-agent.html">
<a href="../practice/open-policy-agent.html">
<b>6.13.1.</b>
开放策略代理OPA
</a>
</li>
<li class="chapter " data-level="6.13.2" data-path="../practice/cloud-native-security.html">
<a href="../practice/cloud-native-security.html">
<b>6.13.2.</b>
云原生安全
</a>
</li>
</ul>
</li>
<li class="header">服务网格</li>
<li class="chapter " data-level="7.1" data-path="../usecases/service-mesh.html">
<a href="../usecases/service-mesh.html">
<b>7.1.</b>
服务网格Service Mesh
</a>
</li>
<li class="chapter " data-level="7.2" data-path="../usecases/the-enterprise-path-to-service-mesh-architectures.html">
<a href="../usecases/the-enterprise-path-to-service-mesh-architectures.html">
<b>7.2.</b>
企业级服务网格架构
</a>
<ul class="articles">
<li class="chapter " data-level="7.2.1" data-path="../usecases/service-mesh-fundamental.html">
<a href="../usecases/service-mesh-fundamental.html">
<b>7.2.1.</b>
服务网格基础
</a>
</li>
<li class="chapter " data-level="7.2.2" data-path="../usecases/comparing-service-mesh-technologies.html">
<a href="../usecases/comparing-service-mesh-technologies.html">
<b>7.2.2.</b>
服务网格技术对比
</a>
</li>
<li class="chapter " data-level="7.2.3" data-path="../usecases/service-mesh-vs-api-gateway.html">
<a href="../usecases/service-mesh-vs-api-gateway.html">
<b>7.2.3.</b>
服务网格对比 API 网关
</a>
</li>
<li class="chapter " data-level="7.2.4" data-path="../usecases/service-mesh-adoption-and-evolution.html">
<a href="../usecases/service-mesh-adoption-and-evolution.html">
<b>7.2.4.</b>
采纳和演进
</a>
</li>
<li class="chapter " data-level="7.2.5" data-path="../usecases/service-mesh-customization-and-integration.html">
<a href="../usecases/service-mesh-customization-and-integration.html">
<b>7.2.5.</b>
定制和集成
</a>
</li>
<li class="chapter " data-level="7.2.6" data-path="../usecases/service-mesh-conclusion.html">
<a href="../usecases/service-mesh-conclusion.html">
<b>7.2.6.</b>
总结
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="7.3" data-path="../usecases/istio.html">
<a href="../usecases/istio.html">
<b>7.3.</b>
Istio
</a>
<ul class="articles">
<li class="chapter " data-level="7.3.1" data-path="../usecases/before-using-istio.html">
<a href="../usecases/before-using-istio.html">
<b>7.3.1.</b>
使用 Istio 前需要考虑的问题
</a>
</li>
<li class="chapter " data-level="7.3.2" data-path="../usecases/sidecar-spec-in-istio.html">
<a href="../usecases/sidecar-spec-in-istio.html">
<b>7.3.2.</b>
Istio 中 sidecar 的注入规范及示例
</a>
</li>
<li class="chapter " data-level="7.3.3" data-path="../usecases/istio-community-tips.html">
<a href="../usecases/istio-community-tips.html">
<b>7.3.3.</b>
如何参与 Istio 社区及注意事项
</a>
</li>
<li class="chapter " data-level="7.3.4" data-path="../usecases/istio-tutorials-collection.html">
<a href="../usecases/istio-tutorials-collection.html">
<b>7.3.4.</b>
Istio 免费学习资源汇总
</a>
</li>
<li class="chapter " data-level="7.3.5" data-path="../usecases/understand-sidecar-injection-and-traffic-hijack-in-istio-service-mesh.html">
<a href="../usecases/understand-sidecar-injection-and-traffic-hijack-in-istio-service-mesh.html">
<b>7.3.5.</b>
Sidecar 的注入与流量劫持
</a>
</li>
<li class="chapter " data-level="7.3.6" data-path="../usecases/envoy-sidecar-routing-of-istio-service-mesh-deep-dive.html">
<a href="../usecases/envoy-sidecar-routing-of-istio-service-mesh-deep-dive.html">
<b>7.3.6.</b>
Envoy Sidecar 代理的路由转发
</a>
</li>
<li class="chapter " data-level="7.3.7" data-path="../usecases/how-to-integrate-istio-with-vm.html">
<a href="../usecases/how-to-integrate-istio-with-vm.html">
<b>7.3.7.</b>
Istio 如何支持虚拟机
</a>
</li>
<li class="chapter " data-level="7.3.8" data-path="../usecases/istio-vm-support.html">
<a href="../usecases/istio-vm-support.html">
<b>7.3.8.</b>
Istio 支持虚拟机的历史
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="7.4" data-path="../usecases/envoy.html">
<a href="../usecases/envoy.html">
<b>7.4.</b>
Envoy
</a>
<ul class="articles">
<li class="chapter " data-level="7.4.1" data-path="../usecases/envoy-terminology.html">
<a href="../usecases/envoy-terminology.html">
<b>7.4.1.</b>
Envoy 的架构与基本术语
</a>
</li>
<li class="chapter " data-level="7.4.2" data-path="../usecases/envoy-front-proxy.html">
<a href="../usecases/envoy-front-proxy.html">
<b>7.4.2.</b>
Envoy 作为前端代理
</a>
</li>
<li class="chapter " data-level="7.4.3" data-path="../usecases/envoy-mesh-in-kubernetes-tutorial.html">
<a href="../usecases/envoy-mesh-in-kubernetes-tutorial.html">
<b>7.4.3.</b>
Envoy mesh 教程
</a>
</li>
</ul>
</li>
<li class="header">领域应用</li>
<li class="chapter " data-level="8.1" data-path="../usecases/">
<a href="../usecases/">
<b>8.1.</b>
领域应用概览
</a>
</li>
<li class="chapter " data-level="8.2" data-path="../usecases/microservices.html">
<a href="../usecases/microservices.html">
<b>8.2.</b>
微服务架构
</a>
<ul class="articles">
<li class="chapter " data-level="8.2.1" data-path="../usecases/service-discovery-in-microservices.html">
<a href="../usecases/service-discovery-in-microservices.html">
<b>8.2.1.</b>
微服务中的服务发现
</a>
</li>
<li class="chapter " data-level="8.2.2" data-path="../usecases/microservices-for-java-developers.html">
<a href="../usecases/microservices-for-java-developers.html">
<b>8.2.2.</b>
使用 Java 构建微服务并发布到 Kubernetes 平台
</a>
<ul class="articles">
<li class="chapter " data-level="8.2.2.1" data-path="../usecases/spring-boot-quick-start-guide.html">
<a href="../usecases/spring-boot-quick-start-guide.html">
<b>8.2.2.1.</b>
Spring Boot 快速开始指南
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="8.3" data-path="../usecases/big-data.html">
<a href="../usecases/big-data.html">
<b>8.3.</b>
大数据
</a>
<ul class="articles">
<li class="chapter " data-level="8.3.1" data-path="../usecases/spark-on-kubernetes.html">
<a href="../usecases/spark-on-kubernetes.html">
<b>8.3.1.</b>
Spark 与 Kubernetes
</a>
<ul class="articles">
<li class="chapter " data-level="8.3.1.1" data-path="../usecases/spark-standalone-on-kubernetes.html">
<a href="../usecases/spark-standalone-on-kubernetes.html">
<b>8.3.1.1.</b>
Spark standalone on Kubernetes
</a>
</li>
<li class="chapter " data-level="8.3.1.2" data-path="../usecases/running-spark-with-kubernetes-native-scheduler.html">
<a href="../usecases/running-spark-with-kubernetes-native-scheduler.html">
<b>8.3.1.2.</b>
运行支持 Kubernetes 原生调度的 Spark 程序
</a>
</li>
</ul>
</li>
</ul>
</li>
<li class="chapter " data-level="8.4" data-path="../usecases/serverless.html">
<a href="../usecases/serverless.html">
<b>8.4.</b>
Serverless 架构
</a>
<ul class="articles">
<li class="chapter " data-level="8.4.1" data-path="../usecases/understanding-serverless.html">
<a href="../usecases/understanding-serverless.html">
<b>8.4.1.</b>
理解 Serverless
</a>
</li>
<li class="chapter " data-level="8.4.2" data-path="../usecases/faas.html">
<a href="../usecases/faas.html">
<b>8.4.2.</b>
FaaS函数即服务
</a>
<ul class="articles">
<li class="chapter " data-level="8.4.2.1" data-path="../usecases/openfaas-quick-start.html">
<a href="../usecases/openfaas-quick-start.html">
<b>8.4.2.1.</b>
OpenFaaS 快速入门指南
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="8.4.3" data-path="../usecases/knative.html">
<a href="../usecases/knative.html">
<b>8.4.3.</b>
Knative
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="8.5" data-path="../usecases/edge-computing.html">
<a href="../usecases/edge-computing.html">
<b>8.5.</b>
边缘计算
</a>
</li>
<li class="chapter " data-level="8.6" data-path="../usecases/ai.html">
<a href="../usecases/ai.html">
<b>8.6.</b>
人工智能
</a>
</li>
<li class="chapter " data-level="8.7" data-path="../usecases/observability.html">
<a href="../usecases/observability.html">
<b>8.7.</b>
可观察性
</a>
</li>
<li class="header">开发指南</li>
<li class="chapter " data-level="9.1" data-path="../develop/">
<a href="../develop/">
<b>9.1.</b>
开发指南概览
</a>
</li>
<li class="chapter " data-level="9.2" data-path="../develop/sigs-and-working-group.html">
<a href="../develop/sigs-and-working-group.html">
<b>9.2.</b>
SIG 和工作组
</a>
</li>
<li class="chapter " data-level="9.3" data-path="../develop/developing-environment.html">
<a href="../develop/developing-environment.html">
<b>9.3.</b>
开发环境搭建
</a>
<ul class="articles">
<li class="chapter " data-level="9.3.1" data-path="../develop/using-vagrant-and-virtualbox-for-development.html">
<a href="../develop/using-vagrant-and-virtualbox-for-development.html">
<b>9.3.1.</b>
本地分布式开发环境搭建(使用 Vagrant 和 Virtualbox
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="9.4" data-path="../develop/testing.html">
<a href="../develop/testing.html">
<b>9.4.</b>
单元测试和集成测试
</a>
</li>
<li class="chapter " data-level="9.5" data-path="../develop/client-go-sample.html">
<a href="../develop/client-go-sample.html">
<b>9.5.</b>
client-go 示例
</a>
<ul class="articles">
<li class="chapter " data-level="9.5.1" data-path="../develop/client-go-informer-sourcecode-analyse.html">
<a href="../develop/client-go-informer-sourcecode-analyse.html">
<b>9.5.1.</b>
client-go 中的 informer 源码分析
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="9.6" data-path="../develop/operator.html">
<a href="../develop/operator.html">
<b>9.6.</b>
Operator
</a>
<ul class="articles">
<li class="chapter " data-level="9.6.1" data-path="../develop/operator-sdk.html">
<a href="../develop/operator-sdk.html">
<b>9.6.1.</b>
operator-sdk
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="9.7" data-path="../develop/kubebuilder.html">
<a href="../develop/kubebuilder.html">
<b>9.7.</b>
kubebuilder
</a>
<ul class="articles">
<li class="chapter " data-level="9.7.1" data-path="../develop/kubebuilder-example.html">
<a href="../develop/kubebuilder-example.html">
<b>9.7.1.</b>
使用 kubebuilder 创建 operator 示例
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="9.8" data-path="../develop/advance-developer.html">
<a href="../develop/advance-developer.html">
<b>9.8.</b>
高级开发指南
</a>
</li>
<li class="chapter " data-level="9.9" data-path="../develop/contribute.html">
<a href="../develop/contribute.html">
<b>9.9.</b>
社区贡献
</a>
</li>
<li class="chapter " data-level="9.10" data-path="../develop/minikube.html">
<a href="../develop/minikube.html">
<b>9.10.</b>
Minikube
</a>
</li>
<li class="header">社区及生态</li>
<li class="chapter " data-level="10.1" data-path="../cloud-native/cncf.html">
<a href="../cloud-native/cncf.html">
<b>10.1.</b>
云原生计算基金会CNCF
</a>
<ul class="articles">
<li class="chapter " data-level="10.1.1" data-path="../cloud-native/cncf-charter.html">
<a href="../cloud-native/cncf-charter.html">
<b>10.1.1.</b>
CNCF 章程
</a>
</li>
<li class="chapter " data-level="10.1.2" data-path="../cloud-native/cncf-sig.html">
<a href="../cloud-native/cncf-sig.html">
<b>10.1.2.</b>
CNCF 特别兴趣小组SIG说明
</a>
</li>
<li class="chapter " data-level="10.1.3" data-path="../cloud-native/cncf-sandbox-criteria.html">
<a href="../cloud-native/cncf-sandbox-criteria.html">
<b>10.1.3.</b>
开源项目加入 CNCF Sandbox 的要求
</a>
</li>
<li class="chapter " data-level="10.1.4" data-path="../cloud-native/cncf-project-governing.html">
<a href="../cloud-native/cncf-project-governing.html">
<b>10.1.4.</b>
CNCF 中的项目治理
</a>
</li>
<li class="chapter " data-level="10.1.5" data-path="../cloud-native/cncf-ambassador.html">
<a href="../cloud-native/cncf-ambassador.html">
<b>10.1.5.</b>
CNCF Ambassador
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="10.2" data-path="../cloud-native/certification.html">
<a href="../cloud-native/certification.html">
<b>10.2.</b>
认证及培训
</a>
<ul class="articles">
<li class="chapter " data-level="10.2.1" data-path="../appendix/about-kcsp.html">
<a href="../appendix/about-kcsp.html">
<b>10.2.1.</b>
认证 Kubernetes 服务提供商KCSP说明
</a>
</li>
<li class="chapter " data-level="10.2.2" data-path="../appendix/about-cka-candidate.html">
<a href="../appendix/about-cka-candidate.html">
<b>10.2.2.</b>
认证 Kubernetes 管理员CKA说明
</a>
</li>
</ul>
</li>
<li class="header">附录</li>
<li class="chapter " data-level="11.1" data-path="../appendix/">
<a href="../appendix/">
<b>11.1.</b>
附录说明
</a>
</li>
<li class="chapter " data-level="11.2" data-path="../appendix/debug-kubernetes-services.html">
<a href="../appendix/debug-kubernetes-services.html">
<b>11.2.</b>
Kubernetes 中的应用故障排查
</a>
</li>
<li class="chapter " data-level="11.3" data-path="../appendix/material-share.html">
<a href="../appendix/material-share.html">
<b>11.3.</b>
Kubernetes 参考资源
</a>
</li>
<li class="chapter " data-level="11.4" data-path="../appendix/tricks.html">
<a href="../appendix/tricks.html">
<b>11.4.</b>
Kubernetes 使用技巧
</a>
</li>
<li class="chapter " data-level="11.5" data-path="../appendix/issues.html">
<a href="../appendix/issues.html">
<b>11.5.</b>
Kubernetes 相关问题记录
</a>
</li>
<li class="chapter " data-level="11.6" data-path="../appendix/summary-and-outlook.html">
<a href="../appendix/summary-and-outlook.html">
<b>11.6.</b>
Kubernetes 及云原生年度总结及展望
</a>
<ul class="articles">
<li class="chapter " data-level="11.6.1" data-path="../appendix/kubernetes-and-cloud-native-summary-in-2017-and-outlook-for-2018.html">
<a href="../appendix/kubernetes-and-cloud-native-summary-in-2017-and-outlook-for-2018.html">
<b>11.6.1.</b>
Kubernetes 与云原生 2017 年年终总结及 2018 年展望
</a>
</li>
<li class="chapter " data-level="11.6.2" data-path="../appendix/kubernetes-and-cloud-native-summary-in-2018-and-outlook-for-2019.html">
<a href="../appendix/kubernetes-and-cloud-native-summary-in-2018-and-outlook-for-2019.html">
<b>11.6.2.</b>
Kubernetes 与云原生 2018 年年终总结及 2019 年展望
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="11.7" data-path="../appendix/cncf-annual-report.html">
<a href="../appendix/cncf-annual-report.html">
<b>11.7.</b>
CNCF 年度报告解读
</a>
<ul class="articles">
<li class="chapter " data-level="11.7.1" data-path="../appendix/cncf-annual-report-2018.html">
<a href="../appendix/cncf-annual-report-2018.html">
<b>11.7.1.</b>
CNCF 2018 年年度报告解读
</a>
</li>
<li class="chapter " data-level="11.7.2" data-path="../appendix/cncf-annual-report-2020.html">
<a href="../appendix/cncf-annual-report-2020.html">
<b>11.7.2.</b>
CNCF 2020 年年度报告解读
</a>
</li>
</ul>
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<a href=".." >配置 Pod 的 liveness 和 readiness 探针</a>
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<h1 id="&#x914D;&#x7F6E;-pod-&#x7684;-liveness-&#x548C;-readiness-&#x63A2;&#x9488;">&#x914D;&#x7F6E; Pod &#x7684; liveness &#x548C; readiness &#x63A2;&#x9488;</h1>
<p>&#x5F53;&#x4F60;&#x4F7F;&#x7528; Kubernetes &#x7684;&#x65F6;&#x5019;&#xFF0C;&#x6709;&#x6CA1;&#x6709;&#x9047;&#x5230;&#x8FC7; Pod &#x5728;&#x542F;&#x52A8;&#x540E;&#x4E00;&#x4F1A;&#x5C31;&#x6302;&#x6389;&#x7136;&#x540E;&#x53C8;&#x91CD;&#x65B0;&#x542F;&#x52A8;&#x8FD9;&#x6837;&#x7684;&#x6076;&#x6027;&#x5FAA;&#x73AF;&#xFF1F;&#x4F60;&#x6709;&#x6CA1;&#x6709;&#x60F3;&#x8FC7; Kubernetes &#x662F;&#x5982;&#x4F55;&#x68C0;&#x6D4B; pod &#x662F;&#x5426;&#x8FD8;&#x5B58;&#x6D3B;&#xFF1F;&#x867D;&#x7136;&#x5BB9;&#x5668;&#x5DF2;&#x7ECF;&#x542F;&#x52A8;&#xFF0C;&#x4F46;&#x662F; Kubernetes &#x5982;&#x4F55;&#x77E5;&#x9053;&#x5BB9;&#x5668;&#x7684;&#x8FDB;&#x7A0B;&#x662F;&#x5426;&#x51C6;&#x5907;&#x597D;&#x5BF9;&#x5916;&#x63D0;&#x4F9B;&#x670D;&#x52A1;&#x4E86;&#x5462;&#xFF1F;&#x8BA9;&#x6211;&#x4EEC;&#x901A;&#x8FC7; Kubernetes &#x5B98;&#x7F51;&#x7684;&#x8FD9;&#x7BC7;&#x6587;&#x7AE0; <a href="https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-probes/" target="_blank">Configure Liveness and Readiness Probes</a>&#xFF0C;&#x6765;&#x4E00;&#x63A2;&#x7A76;&#x7ADF;&#x3002;</p>
<p>&#x672C;&#x6587;&#x5C06;&#x5C55;&#x793A;&#x5982;&#x4F55;&#x914D;&#x7F6E;&#x5BB9;&#x5668;&#x7684;&#x5B58;&#x6D3B;&#x548C;&#x53EF;&#x8BFB;&#x6027;&#x63A2;&#x9488;&#x3002;</p>
<p>Kubelet &#x4F7F;&#x7528; liveness probe&#xFF08;&#x5B58;&#x6D3B;&#x63A2;&#x9488;&#xFF09;&#x6765;&#x786E;&#x5B9A;&#x4F55;&#x65F6;&#x91CD;&#x542F;&#x5BB9;&#x5668;&#x3002;&#x4F8B;&#x5982;&#xFF0C;&#x5F53;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5904;&#x4E8E;&#x8FD0;&#x884C;&#x72B6;&#x6001;&#x4F46;&#x65E0;&#x6CD5;&#x505A;&#x8FDB;&#x4E00;&#x6B65;&#x64CD;&#x4F5C;&#xFF0C;liveness &#x63A2;&#x9488;&#x5C06;&#x6355;&#x83B7;&#x5230; deadlock&#xFF0C;&#x91CD;&#x542F;&#x5904;&#x4E8E;&#x8BE5;&#x72B6;&#x6001;&#x4E0B;&#x7684;&#x5BB9;&#x5668;&#xFF0C;&#x4F7F;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x5728;&#x5B58;&#x5728; bug &#x7684;&#x60C5;&#x51B5;&#x4E0B;&#x4F9D;&#x7136;&#x80FD;&#x591F;&#x7EE7;&#x7EED;&#x8FD0;&#x884C;&#x4E0B;&#x53BB;&#xFF08;&#x8C01;&#x7684;&#x7A0B;&#x5E8F;&#x8FD8;&#x6CA1;&#x51E0;&#x4E2A; bug &#x5462;&#xFF09;&#x3002;</p>
<p>Kubelet &#x4F7F;&#x7528; readiness probe&#xFF08;&#x5C31;&#x7EEA;&#x63A2;&#x9488;&#xFF09;&#x6765;&#x786E;&#x5B9A;&#x5BB9;&#x5668;&#x662F;&#x5426;&#x5DF2;&#x7ECF;&#x5C31;&#x7EEA;&#x53EF;&#x4EE5;&#x63A5;&#x53D7;&#x6D41;&#x91CF;&#x3002;&#x53EA;&#x6709;&#x5F53; Pod &#x4E2D;&#x7684;&#x5BB9;&#x5668;&#x90FD;&#x5904;&#x4E8E;&#x5C31;&#x7EEA;&#x72B6;&#x6001;&#x65F6; kubelet &#x624D;&#x4F1A;&#x8BA4;&#x5B9A;&#x8BE5; Pod &#x5904;&#x4E8E;&#x5C31;&#x7EEA;&#x72B6;&#x6001;&#x3002;&#x8BE5;&#x4FE1;&#x53F7;&#x7684;&#x4F5C;&#x7528;&#x662F;&#x63A7;&#x5236;&#x54EA;&#x4E9B; Pod &#x5E94;&#x8BE5;&#x4F5C;&#x4E3A; service &#x7684;&#x540E;&#x7AEF;&#x3002;&#x5982;&#x679C; Pod &#x5904;&#x4E8E;&#x975E;&#x5C31;&#x7EEA;&#x72B6;&#x6001;&#xFF0C;&#x90A3;&#x4E48;&#x5B83;&#x4EEC;&#x5C06;&#x4F1A;&#x88AB;&#x4ECE; service &#x7684; load balancer &#x4E2D;&#x79FB;&#x9664;&#x3002;</p>
<h2 id="&#x5B9A;&#x4E49;-liveness-&#x547D;&#x4EE4;">&#x5B9A;&#x4E49; liveness &#x547D;&#x4EE4;</h2>
<p>&#x8BB8;&#x591A;&#x957F;&#x65F6;&#x95F4;&#x8FD0;&#x884C;&#x7684;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x6700;&#x7EC8;&#x4F1A;&#x8F6C;&#x6362;&#x5230; broken &#x72B6;&#x6001;&#xFF0C;&#x9664;&#x975E;&#x91CD;&#x65B0;&#x542F;&#x52A8;&#xFF0C;&#x5426;&#x5219;&#x65E0;&#x6CD5;&#x6062;&#x590D;&#x3002;Kubernetes &#x63D0;&#x4F9B;&#x4E86; liveness probe &#x6765;&#x68C0;&#x6D4B;&#x548C;&#x8865;&#x6551;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#x3002;</p>
<p>&#x5728;&#x672C;&#x6B21;&#x7EC3;&#x4E60;&#x5C06;&#x57FA;&#x4E8E; <code>gcr.io/google_containers/busybox</code> &#x955C;&#x50CF;&#x521B;&#x5EFA;&#x8FD0;&#x884C;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;&#x7684; Pod&#x3002;&#x4EE5;&#x4E0B;&#x662F; Pod &#x7684;&#x914D;&#x7F6E;&#x6587;&#x4EF6; <code>exec-liveness.yaml</code>&#xFF1A;</p>
<pre class="language-"><code class="lang-yaml"><span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1
<span class="token key atrule">kind</span><span class="token punctuation">:</span> Pod
<span class="token key atrule">metadata</span><span class="token punctuation">:</span>
<span class="token key atrule">labels</span><span class="token punctuation">:</span>
<span class="token key atrule">test</span><span class="token punctuation">:</span> liveness
<span class="token key atrule">name</span><span class="token punctuation">:</span> liveness<span class="token punctuation">-</span>exec
<span class="token key atrule">spec</span><span class="token punctuation">:</span>
<span class="token key atrule">containers</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> liveness
<span class="token key atrule">args</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> /bin/sh
<span class="token punctuation">-</span> <span class="token punctuation">-</span>c
<span class="token punctuation">-</span> touch /tmp/healthy; sleep 30; rm <span class="token punctuation">-</span>rf /tmp/healthy; sleep 600
<span class="token key atrule">image</span><span class="token punctuation">:</span> gcr.io/google_containers/busybox
<span class="token key atrule">livenessProbe</span><span class="token punctuation">:</span>
<span class="token key atrule">exec</span><span class="token punctuation">:</span>
<span class="token key atrule">command</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> cat
<span class="token punctuation">-</span> /tmp/healthy
<span class="token key atrule">initialDelaySeconds</span><span class="token punctuation">:</span> <span class="token number">5</span>
<span class="token key atrule">periodSeconds</span><span class="token punctuation">:</span> <span class="token number">5</span>
</code></pre>
<p>&#x8BE5;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x7ED9; Pod &#x914D;&#x7F6E;&#x4E86;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;&#x3002;<code>periodSeconds</code> &#x89C4;&#x5B9A; kubelet &#x8981;&#x6BCF;&#x9694; 5 &#x79D2;&#x6267;&#x884C;&#x4E00;&#x6B21; liveness probe&#x3002; <code>initialDelaySeconds</code> &#x544A;&#x8BC9; kubelet &#x5728;&#x7B2C;&#x4E00;&#x6B21;&#x6267;&#x884C; probe &#x4E4B;&#x524D;&#x8981;&#x7684;&#x7B49;&#x5F85; 5 &#x79D2;&#x949F;&#x3002;&#x63A2;&#x9488;&#x68C0;&#x6D4B;&#x547D;&#x4EE4;&#x662F;&#x5728;&#x5BB9;&#x5668;&#x4E2D;&#x6267;&#x884C; <code>cat /tmp/healthy</code> &#x547D;&#x4EE4;&#x3002;&#x5982;&#x679C;&#x547D;&#x4EE4;&#x6267;&#x884C;&#x6210;&#x529F;&#xFF0C;&#x5C06;&#x8FD4;&#x56DE; 0&#xFF0C;kubelet &#x5C31;&#x4F1A;&#x8BA4;&#x4E3A;&#x8BE5;&#x5BB9;&#x5668;&#x662F;&#x6D3B;&#x7740;&#x7684;&#x5E76;&#x4E14;&#x5F88;&#x5065;&#x5EB7;&#x3002;&#x5982;&#x679C;&#x8FD4;&#x56DE;&#x975E; 0 &#x503C;&#xFF0C;kubelet &#x5C31;&#x4F1A;&#x6740;&#x6389;&#x8FD9;&#x4E2A;&#x5BB9;&#x5668;&#x5E76;&#x91CD;&#x542F;&#x5B83;&#x3002;</p>
<p>&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x65F6;&#xFF0C;&#x6267;&#x884C;&#x8BE5;&#x547D;&#x4EE4;&#xFF1A;</p>
<pre class="language-"><code class="lang-bash">/bin/sh -c <span class="token string">&quot;touch /tmp/healthy; sleep 30; rm -rf /tmp/healthy; sleep 600&quot;</span>
</code></pre>
<p>&#x5728;&#x5BB9;&#x5668;&#x751F;&#x547D;&#x7684;&#x6700;&#x521D; 30 &#x79D2;&#x5185;&#x6709;&#x4E00;&#x4E2A; <code>/tmp/healthy</code> &#x6587;&#x4EF6;&#xFF0C;&#x5728;&#x8FD9; 30 &#x79D2;&#x5185; <code>cat /tmp/healthy</code> &#x547D;&#x4EE4;&#x4F1A;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x6210;&#x529F;&#x7684;&#x8FD4;&#x56DE;&#x7801;&#x3002;30 &#x79D2;&#x540E;&#xFF0C; <code>cat /tmp/healthy</code> &#x5C06;&#x8FD4;&#x56DE;&#x5931;&#x8D25;&#x7684;&#x8FD4;&#x56DE;&#x7801;&#x3002;</p>
<p>&#x521B;&#x5EFA; Pod&#xFF1A;</p>
<pre class="language-"><code class="lang-bash">kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/exec-liveness.yaml
</code></pre>
<p>&#x5728; 30 &#x79D2;&#x5185;&#xFF0C;&#x67E5;&#x770B; Pod &#x7684; event&#xFF1A;</p>
<pre class="language-"><code>kubectl describe pod liveness-exec
</code></pre><p>&#x7ED3;&#x679C;&#x663E;&#x793A;&#x6CA1;&#x6709;&#x5931;&#x8D25;&#x7684; liveness probe&#xFF1A;</p>
<pre class="language-"><code class="lang-bash">FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
24s 24s <span class="token number">1</span> <span class="token punctuation">{</span>default-scheduler <span class="token punctuation">}</span> Normal Scheduled Successfully assigned liveness-exec to worker0
23s 23s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Pulling pulling image <span class="token string">&quot;gcr.io/google_containers/busybox&quot;</span>
23s 23s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Pulled Successfully pulled image <span class="token string">&quot;gcr.io/google_containers/busybox&quot;</span>
23s 23s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Created Created container with docker <span class="token function">id</span> 86849c15382e<span class="token punctuation">;</span> Security:<span class="token punctuation">[</span>seccomp<span class="token operator">=</span>unconfined<span class="token punctuation">]</span>
23s 23s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Started Started container with docker <span class="token function">id</span> 86849c15382e
</code></pre>
<p>&#x542F;&#x52A8; 35 &#x79D2;&#x540E;&#xFF0C;&#x518D;&#x6B21;&#x67E5;&#x770B; pod &#x7684; event&#xFF1A;</p>
<pre class="language-"><code class="lang-bash">kubectl describe pod liveness-exec
</code></pre>
<p>&#x5728;&#x6700;&#x4E0B;&#x9762;&#x6709;&#x4E00;&#x6761;&#x4FE1;&#x606F;&#x663E;&#x793A; liveness probe &#x5931;&#x8D25;&#xFF0C;&#x5BB9;&#x5668;&#x88AB;&#x5220;&#x6389;&#x5E76;&#x91CD;&#x65B0;&#x521B;&#x5EFA;&#x3002;</p>
<pre class="language-"><code class="lang-bash">FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
37s 37s <span class="token number">1</span> <span class="token punctuation">{</span>default-scheduler <span class="token punctuation">}</span> Normal Scheduled Successfully assigned liveness-exec to worker0
36s 36s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Pulling pulling image <span class="token string">&quot;gcr.io/google_containers/busybox&quot;</span>
36s 36s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Pulled Successfully pulled image <span class="token string">&quot;gcr.io/google_containers/busybox&quot;</span>
36s 36s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Created Created container with docker <span class="token function">id</span> 86849c15382e<span class="token punctuation">;</span> Security:<span class="token punctuation">[</span>seccomp<span class="token operator">=</span>unconfined<span class="token punctuation">]</span>
36s 36s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Normal Started Started container with docker <span class="token function">id</span> 86849c15382e
2s 2s <span class="token number">1</span> <span class="token punctuation">{</span>kubelet worker0<span class="token punctuation">}</span> spec.containers<span class="token punctuation">{</span>liveness<span class="token punctuation">}</span> Warning Unhealthy Liveness probe failed: cat: can<span class="token string">&apos;t open &apos;</span>/tmp/healthy&apos;: No such <span class="token function">file</span> or directory
</code></pre>
<p>&#x518D;&#x7B49; 30 &#x79D2;&#xFF0C;&#x786E;&#x8BA4;&#x5BB9;&#x5668;&#x5DF2;&#x7ECF;&#x91CD;&#x542F;&#xFF1A;</p>
<pre class="language-"><code class="lang-bash">kubectl get pod liveness-exec
</code></pre>
<p>&#x4ECE;&#x8F93;&#x51FA;&#x7ED3;&#x679C;&#x6765; <code>RESTARTS</code> &#x503C;&#x52A0; 1 &#x4E86;&#x3002;</p>
<pre class="language-"><code class="lang-bash">NAME READY STATUS RESTARTS AGE
liveness-exec <span class="token number">1</span>/1 Running <span class="token number">1</span> 1m
</code></pre>
<h2 id="&#x5B9A;&#x4E49;&#x4E00;&#x4E2A;-liveness-http-&#x8BF7;&#x6C42;">&#x5B9A;&#x4E49;&#x4E00;&#x4E2A; liveness HTTP &#x8BF7;&#x6C42;</h2>
<p>&#x6211;&#x4EEC;&#x8FD8;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; HTTP GET &#x8BF7;&#x6C42;&#x4F5C;&#x4E3A; liveness probe&#x3002;&#x4E0B;&#x9762;&#x662F;&#x4E00;&#x4E2A;&#x57FA;&#x4E8E; <code>gcr.io/google_containers/liveness</code> &#x955C;&#x50CF;&#x8FD0;&#x884C;&#x4E86;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;&#x7684; Pod &#x7684;&#x4F8B;&#x5B50; <code>http-liveness.yaml</code>&#xFF1A;</p>
<pre class="language-"><code class="lang-yaml"><span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1
<span class="token key atrule">kind</span><span class="token punctuation">:</span> Pod
<span class="token key atrule">metadata</span><span class="token punctuation">:</span>
<span class="token key atrule">labels</span><span class="token punctuation">:</span>
<span class="token key atrule">test</span><span class="token punctuation">:</span> liveness
<span class="token key atrule">name</span><span class="token punctuation">:</span> liveness<span class="token punctuation">-</span>http
<span class="token key atrule">spec</span><span class="token punctuation">:</span>
<span class="token key atrule">containers</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> liveness
<span class="token key atrule">args</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> /server
<span class="token key atrule">image</span><span class="token punctuation">:</span> gcr.io/google_containers/liveness
<span class="token key atrule">livenessProbe</span><span class="token punctuation">:</span>
<span class="token key atrule">httpGet</span><span class="token punctuation">:</span>
<span class="token key atrule">path</span><span class="token punctuation">:</span> /healthz
<span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">8080</span>
<span class="token key atrule">httpHeaders</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> X<span class="token punctuation">-</span>Custom<span class="token punctuation">-</span>Header
<span class="token key atrule">value</span><span class="token punctuation">:</span> Awesome
<span class="token key atrule">initialDelaySeconds</span><span class="token punctuation">:</span> <span class="token number">3</span>
<span class="token key atrule">periodSeconds</span><span class="token punctuation">:</span> <span class="token number">3</span>
</code></pre>
<p>&#x8BE5;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x53EA;&#x5B9A;&#x4E49;&#x4E86;&#x4E00;&#x4E2A;&#x5BB9;&#x5668;&#xFF0C;<code>livenessProbe</code> &#x6307;&#x5B9A; kubelet &#x9700;&#x8981;&#x6BCF;&#x9694; 3 &#x79D2;&#x6267;&#x884C;&#x4E00;&#x6B21; liveness probe&#x3002;<code>initialDelaySeconds</code> &#x6307;&#x5B9A; kubelet &#x5728;&#x8BE5;&#x6267;&#x884C;&#x7B2C;&#x4E00;&#x6B21;&#x63A2;&#x6D4B;&#x4E4B;&#x524D;&#x9700;&#x8981;&#x7B49;&#x5F85; 3 &#x79D2;&#x949F;&#x3002;&#x8BE5;&#x63A2;&#x9488;&#x5C06;&#x5411;&#x5BB9;&#x5668;&#x4E2D;&#x7684; server &#x7684; 8080 &#x7AEF;&#x53E3;&#x53D1;&#x9001;&#x4E00;&#x4E2A; HTTP GET &#x8BF7;&#x6C42;&#x3002;&#x5982;&#x679C; server &#x7684; <code>/healthz</code> &#x8DEF;&#x5F84;&#x7684; handler &#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x6210;&#x529F;&#x7684;&#x8FD4;&#x56DE;&#x7801;&#xFF0C;kubelet &#x5C31;&#x4F1A;&#x8BA4;&#x5B9A;&#x8BE5;&#x5BB9;&#x5668;&#x662F;&#x6D3B;&#x7740;&#x7684;&#x5E76;&#x4E14;&#x5F88;&#x5065;&#x5EB7;&#x3002;&#x5982;&#x679C;&#x8FD4;&#x56DE;&#x5931;&#x8D25;&#x7684;&#x8FD4;&#x56DE;&#x7801;&#xFF0C;kubelet &#x5C06;&#x6740;&#x6389;&#x8BE5;&#x5BB9;&#x5668;&#x5E76;&#x91CD;&#x542F;&#x5B83;&#x3002;</p>
<p>&#x4EFB;&#x4F55;&#x5927;&#x4E8E; 200 &#x5C0F;&#x4E8E; 400 &#x7684;&#x8FD4;&#x56DE;&#x7801;&#x90FD;&#x4F1A;&#x8BA4;&#x5B9A;&#x662F;&#x6210;&#x529F;&#x7684;&#x8FD4;&#x56DE;&#x7801;&#x3002;&#x5176;&#x4ED6;&#x8FD4;&#x56DE;&#x7801;&#x90FD;&#x4F1A;&#x88AB;&#x8BA4;&#x4E3A;&#x662F;&#x5931;&#x8D25;&#x7684;&#x8FD4;&#x56DE;&#x7801;&#x3002;</p>
<p>&#x6700;&#x5F00;&#x59CB;&#x7684; 10 &#x79D2;&#x8BE5;&#x5BB9;&#x5668;&#x662F;&#x6D3B;&#x7740;&#x7684;&#xFF0C; <code>/healthz</code> handler &#x8FD4;&#x56DE; 200 &#x7684;&#x72B6;&#x6001;&#x7801;&#x3002;&#x8FD9;&#x4E4B;&#x540E;&#x5C06;&#x8FD4;&#x56DE; 500 &#x7684;&#x8FD4;&#x56DE;&#x7801;&#x3002;</p>
<pre class="language-"><code class="lang-go">http<span class="token punctuation">.</span><span class="token function">HandleFunc</span><span class="token punctuation">(</span><span class="token string">&quot;/healthz&quot;</span><span class="token punctuation">,</span> <span class="token keyword">func</span><span class="token punctuation">(</span>w http<span class="token punctuation">.</span>ResponseWriter<span class="token punctuation">,</span> r <span class="token operator">*</span>http<span class="token punctuation">.</span>Request<span class="token punctuation">)</span> <span class="token punctuation">{</span>
duration <span class="token operator">:=</span> time<span class="token punctuation">.</span><span class="token function">Now</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">Sub</span><span class="token punctuation">(</span>started<span class="token punctuation">)</span>
<span class="token keyword">if</span> duration<span class="token punctuation">.</span><span class="token function">Seconds</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">&gt;</span> <span class="token number">10</span> <span class="token punctuation">{</span>
w<span class="token punctuation">.</span><span class="token function">WriteHeader</span><span class="token punctuation">(</span><span class="token number">500</span><span class="token punctuation">)</span>
w<span class="token punctuation">.</span><span class="token function">Write</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token function">byte</span><span class="token punctuation">(</span>fmt<span class="token punctuation">.</span><span class="token function">Sprintf</span><span class="token punctuation">(</span><span class="token string">&quot;error: %v&quot;</span><span class="token punctuation">,</span> duration<span class="token punctuation">.</span><span class="token function">Seconds</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
w<span class="token punctuation">.</span><span class="token function">WriteHeader</span><span class="token punctuation">(</span><span class="token number">200</span><span class="token punctuation">)</span>
w<span class="token punctuation">.</span><span class="token function">Write</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token function">byte</span><span class="token punctuation">(</span><span class="token string">&quot;ok&quot;</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre>
<p>&#x5BB9;&#x5668;&#x542F;&#x52A8; 3 &#x79D2;&#x540E;&#xFF0C;kubelet &#x5F00;&#x59CB;&#x6267;&#x884C;&#x5065;&#x5EB7;&#x68C0;&#x67E5;&#x3002;&#x7B2C;&#x4E00;&#x6B21;&#x5065;&#x5EB7;&#x76D1;&#x6D4B;&#x4F1A;&#x6210;&#x529F;&#xFF0C;&#x4F46;&#x662F; 10 &#x79D2;&#x540E;&#xFF0C;&#x5065;&#x5EB7;&#x68C0;&#x67E5;&#x5C06;&#x5931;&#x8D25;&#xFF0C;kubelet &#x5C06;&#x6740;&#x6389;&#x548C;&#x91CD;&#x542F;&#x5BB9;&#x5668;&#x3002;</p>
<p>&#x521B;&#x5EFA;&#x4E00;&#x4E2A; Pod &#x6765;&#x6D4B;&#x8BD5;&#x4E00;&#x4E0B; HTTP liveness &#x68C0;&#x6D4B;&#xFF1A;</p>
<pre class="language-"><code class="lang-bash">kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/http-liveness.yaml
</code></pre>
<p>After 10 seconds, view Pod events to verify that liveness probes have failed and the Container has been restarted:</p>
<p>10 &#x79D2;&#x540E;&#xFF0C;&#x67E5;&#x770B; Pod &#x7684; event&#xFF0C;&#x786E;&#x8BA4; liveness probe &#x5931;&#x8D25;&#x5E76;&#x91CD;&#x542F;&#x4E86;&#x5BB9;&#x5668;&#x3002;</p>
<pre class="language-"><code class="lang-bash">kubectl describe pod liveness-http
</code></pre>
<h2 id="&#x5B9A;&#x4E49;-tcp-liveness-&#x63A2;&#x9488;">&#x5B9A;&#x4E49; TCP liveness &#x63A2;&#x9488;</h2>
<p>&#x7B2C;&#x4E09;&#x79CD; liveness probe &#x4F7F;&#x7528; TCP Socket&#x3002; &#x4F7F;&#x7528;&#x6B64;&#x914D;&#x7F6E;&#xFF0C;kubelet &#x5C06;&#x5C1D;&#x8BD5;&#x5728;&#x6307;&#x5B9A;&#x7AEF;&#x53E3;&#x4E0A;&#x6253;&#x5F00;&#x5BB9;&#x5668;&#x7684;&#x5957;&#x63A5;&#x5B57;&#x3002; &#x5982;&#x679C;&#x53EF;&#x4EE5;&#x5EFA;&#x7ACB;&#x8FDE;&#x63A5;&#xFF0C;&#x5BB9;&#x5668;&#x88AB;&#x8BA4;&#x4E3A;&#x662F;&#x5065;&#x5EB7;&#x7684;&#xFF0C;&#x5982;&#x679C;&#x4E0D;&#x80FD;&#x5C31;&#x8BA4;&#x4E3A;&#x662F;&#x5931;&#x8D25;&#x7684;&#x3002;</p>
<pre class="language-"><code class="lang-yaml"><span class="token key atrule">apiVersion</span><span class="token punctuation">:</span> v1
<span class="token key atrule">kind</span><span class="token punctuation">:</span> Pod
<span class="token key atrule">metadata</span><span class="token punctuation">:</span>
<span class="token key atrule">name</span><span class="token punctuation">:</span> goproxy
<span class="token key atrule">labels</span><span class="token punctuation">:</span>
<span class="token key atrule">app</span><span class="token punctuation">:</span> goproxy
<span class="token key atrule">spec</span><span class="token punctuation">:</span>
<span class="token key atrule">containers</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> goproxy
<span class="token key atrule">image</span><span class="token punctuation">:</span> gcr.io/google_containers/goproxy<span class="token punctuation">:</span><span class="token number">0.1</span>
<span class="token key atrule">ports</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">containerPort</span><span class="token punctuation">:</span> <span class="token number">8080</span>
<span class="token key atrule">readinessProbe</span><span class="token punctuation">:</span>
<span class="token key atrule">tcpSocket</span><span class="token punctuation">:</span>
<span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">8080</span>
<span class="token key atrule">initialDelaySeconds</span><span class="token punctuation">:</span> <span class="token number">5</span>
<span class="token key atrule">periodSeconds</span><span class="token punctuation">:</span> <span class="token number">10</span>
<span class="token key atrule">livenessProbe</span><span class="token punctuation">:</span>
<span class="token key atrule">tcpSocket</span><span class="token punctuation">:</span>
<span class="token key atrule">port</span><span class="token punctuation">:</span> <span class="token number">8080</span>
<span class="token key atrule">initialDelaySeconds</span><span class="token punctuation">:</span> <span class="token number">15</span>
<span class="token key atrule">periodSeconds</span><span class="token punctuation">:</span> <span class="token number">20</span>
</code></pre>
<p>&#x5982;&#x60A8;&#x6240;&#x89C1;&#xFF0C;TCP &#x68C0;&#x67E5;&#x7684;&#x914D;&#x7F6E;&#x4E0E; HTTP &#x68C0;&#x67E5;&#x975E;&#x5E38;&#x76F8;&#x4F3C;&#x3002; &#x6B64;&#x793A;&#x4F8B;&#x540C;&#x65F6;&#x4F7F;&#x7528;&#x4E86; readiness &#x548C; liveness probe&#x3002; &#x5BB9;&#x5668;&#x542F;&#x52A8;&#x540E; 5 &#x79D2;&#x949F;&#xFF0C;kubelet &#x5C06;&#x53D1;&#x9001;&#x7B2C;&#x4E00;&#x4E2A; readiness probe&#x3002; &#x8FD9;&#x5C06;&#x5C1D;&#x8BD5;&#x8FDE;&#x63A5;&#x5230;&#x7AEF;&#x53E3; 8080 &#x4E0A;&#x7684; goproxy &#x5BB9;&#x5668;&#x3002;&#x5982;&#x679C;&#x63A2;&#x6D4B;&#x6210;&#x529F;&#xFF0C;&#x5219;&#x8BE5; pod &#x5C06;&#x88AB;&#x6807;&#x8BB0;&#x4E3A;&#x5C31;&#x7EEA;&#x3002;Kubelet &#x5C06;&#x6BCF;&#x9694; 10 &#x79D2;&#x949F;&#x6267;&#x884C;&#x4E00;&#x6B21;&#x8BE5;&#x68C0;&#x67E5;&#x3002;</p>
<p>&#x9664;&#x4E86; readiness probe &#x4E4B;&#x5916;&#xFF0C;&#x8BE5;&#x914D;&#x7F6E;&#x8FD8;&#x5305;&#x62EC; liveness probe&#x3002; &#x5BB9;&#x5668;&#x542F;&#x52A8; 15 &#x79D2;&#x540E;&#xFF0C;kubelet &#x5C06;&#x8FD0;&#x884C;&#x7B2C;&#x4E00;&#x4E2A; liveness probe&#x3002; &#x5C31;&#x50CF; readiness probe &#x4E00;&#x6837;&#xFF0C;&#x8FD9;&#x5C06;&#x5C1D;&#x8BD5;&#x8FDE;&#x63A5;&#x5230; goproxy &#x5BB9;&#x5668;&#x4E0A;&#x7684; 8080 &#x7AEF;&#x53E3;&#x3002;&#x5982;&#x679C; liveness probe &#x5931;&#x8D25;&#xFF0C;&#x5BB9;&#x5668;&#x5C06;&#x91CD;&#x65B0;&#x542F;&#x52A8;&#x3002;</p>
<h2 id="&#x4F7F;&#x7528;&#x547D;&#x540D;&#x7684;&#x7AEF;&#x53E3;">&#x4F7F;&#x7528;&#x547D;&#x540D;&#x7684;&#x7AEF;&#x53E3;</h2>
<p>&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x547D;&#x540D;&#x7684; ContainerPort &#x4F5C;&#x4E3A; HTTP &#x6216; TCP liveness &#x68C0;&#x67E5;&#xFF1A;</p>
<pre class="language-"><code class="lang-yaml"><span class="token key atrule">ports</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> <span class="token key atrule">name</span><span class="token punctuation">:</span> liveness<span class="token punctuation">-</span>port
<span class="token key atrule">containerPort</span><span class="token punctuation">:</span> <span class="token number">8080</span>
<span class="token key atrule">hostPort</span><span class="token punctuation">:</span> <span class="token number">8080</span>
<span class="token key atrule">livenessProbe</span><span class="token punctuation">:</span>
<span class="token key atrule">httpGet</span><span class="token punctuation">:</span>
<span class="token key atrule">path</span><span class="token punctuation">:</span> /healthz
<span class="token key atrule">port</span><span class="token punctuation">:</span> liveness<span class="token punctuation">-</span>port
</code></pre>
<h2 id="&#x5B9A;&#x4E49;-readiness-&#x63A2;&#x9488;">&#x5B9A;&#x4E49; readiness &#x63A2;&#x9488;</h2>
<p>&#x6709;&#x65F6;&#xFF0C;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x6682;&#x65F6;&#x65E0;&#x6CD5;&#x5BF9;&#x5916;&#x90E8;&#x6D41;&#x91CF;&#x63D0;&#x4F9B;&#x670D;&#x52A1;&#x3002; &#x4F8B;&#x5982;&#xFF0C;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x53EF;&#x80FD;&#x9700;&#x8981;&#x5728;&#x542F;&#x52A8;&#x671F;&#x95F4;&#x52A0;&#x8F7D;&#x5927;&#x91CF;&#x6570;&#x636E;&#x6216;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x3002; &#x5728;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x4F60;&#x4E0D;&#x60F3;&#x6740;&#x6B7B;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#xFF0C;&#x4F46;&#x4F60;&#x4E5F;&#x4E0D;&#x60F3;&#x53D1;&#x9001;&#x8BF7;&#x6C42;&#x3002; Kubernetes &#x63D0;&#x4F9B;&#x4E86; readiness probe &#x6765;&#x68C0;&#x6D4B;&#x548C;&#x51CF;&#x8F7B;&#x8FD9;&#x4E9B;&#x60C5;&#x51B5;&#x3002; Pod &#x4E2D;&#x7684;&#x5BB9;&#x5668;&#x53EF;&#x4EE5;&#x62A5;&#x544A;&#x81EA;&#x5DF1;&#x8FD8;&#x6CA1;&#x6709;&#x51C6;&#x5907;&#xFF0C;&#x4E0D;&#x80FD;&#x5904;&#x7406; Kubernetes &#x670D;&#x52A1;&#x53D1;&#x9001;&#x8FC7;&#x6765;&#x7684;&#x6D41;&#x91CF;&#x3002;</p>
<p>Readiness probe &#x7684;&#x914D;&#x7F6E;&#x8DDF; liveness probe &#x5F88;&#x50CF;&#x3002;&#x552F;&#x4E00;&#x7684;&#x4E0D;&#x540C;&#x662F;&#x4F7F;&#x7528; <code>readinessProbe</code> &#x800C;&#x4E0D;&#x662F; <code>livenessProbe</code>&#x3002;</p>
<pre class="language-"><code class="lang-yaml"><span class="token key atrule">readinessProbe</span><span class="token punctuation">:</span>
<span class="token key atrule">exec</span><span class="token punctuation">:</span>
<span class="token key atrule">command</span><span class="token punctuation">:</span>
<span class="token punctuation">-</span> cat
<span class="token punctuation">-</span> /tmp/healthy
<span class="token key atrule">initialDelaySeconds</span><span class="token punctuation">:</span> <span class="token number">5</span>
<span class="token key atrule">periodSeconds</span><span class="token punctuation">:</span> <span class="token number">5</span>
</code></pre>
<p>Readiness probe &#x7684; HTTP &#x548C; TCP &#x7684;&#x63A2;&#x6D4B;&#x5668;&#x914D;&#x7F6E;&#x8DDF; liveness probe &#x4E00;&#x6837;&#x3002;</p>
<p>Readiness &#x548C; livenss probe &#x53EF;&#x4EE5;&#x5E76;&#x884C;&#x7528;&#x4E8E;&#x540C;&#x4E00;&#x5BB9;&#x5668;&#x3002; &#x4F7F;&#x7528;&#x4E24;&#x8005;&#x53EF;&#x4EE5;&#x786E;&#x4FDD;&#x6D41;&#x91CF;&#x65E0;&#x6CD5;&#x5230;&#x8FBE;&#x672A;&#x51C6;&#x5907;&#x597D;&#x7684;&#x5BB9;&#x5668;&#xFF0C;&#x5E76;&#x4E14;&#x5BB9;&#x5668;&#x5728;&#x5931;&#x8D25;&#x65F6;&#x91CD;&#x65B0;&#x542F;&#x52A8;&#x3002;</p>
<h2 id="&#x914D;&#x7F6E;-probe">&#x914D;&#x7F6E; Probe</h2>
<p>Probe &#x4E2D;&#x6709;&#x5F88;&#x591A;&#x7CBE;&#x786E;&#x548C;&#x8BE6;&#x7EC6;&#x7684;&#x914D;&#x7F6E;&#xFF0C;&#x901A;&#x8FC7;&#x5B83;&#x4EEC;&#x4F60;&#x80FD;&#x51C6;&#x786E;&#x7684;&#x63A7;&#x5236; liveness &#x548C; readiness &#x68C0;&#x67E5;&#xFF1A;</p>
<ul>
<li><code>initialDelaySeconds</code>&#xFF1A;&#x5BB9;&#x5668;&#x542F;&#x52A8;&#x540E;&#x7B2C;&#x4E00;&#x6B21;&#x6267;&#x884C;&#x63A2;&#x6D4B;&#x662F;&#x9700;&#x8981;&#x7B49;&#x5F85;&#x591A;&#x5C11;&#x79D2;&#x3002;</li>
<li><code>periodSeconds</code>&#xFF1A;&#x6267;&#x884C;&#x63A2;&#x6D4B;&#x7684;&#x9891;&#x7387;&#x3002;&#x9ED8;&#x8BA4;&#x662F; 10 &#x79D2;&#xFF0C;&#x6700;&#x5C0F; 1 &#x79D2;&#x3002;</li>
<li><code>timeoutSeconds</code>&#xFF1A;&#x63A2;&#x6D4B;&#x8D85;&#x65F6;&#x65F6;&#x95F4;&#x3002;&#x9ED8;&#x8BA4; 1 &#x79D2;&#xFF0C;&#x6700;&#x5C0F; 1 &#x79D2;&#x3002;</li>
<li><code>successThreshold</code>&#xFF1A;&#x63A2;&#x6D4B;&#x5931;&#x8D25;&#x540E;&#xFF0C;&#x6700;&#x5C11;&#x8FDE;&#x7EED;&#x63A2;&#x6D4B;&#x6210;&#x529F;&#x591A;&#x5C11;&#x6B21;&#x624D;&#x88AB;&#x8BA4;&#x5B9A;&#x4E3A;&#x6210;&#x529F;&#x3002;&#x9ED8;&#x8BA4;&#x662F; 1&#x3002;&#x5BF9;&#x4E8E; liveness &#x5FC5;&#x987B;&#x662F; 1&#x3002;&#x6700;&#x5C0F;&#x503C;&#x662F; 1&#x3002;</li>
<li><code>failureThreshold</code>&#xFF1A;&#x63A2;&#x6D4B;&#x6210;&#x529F;&#x540E;&#xFF0C;&#x6700;&#x5C11;&#x8FDE;&#x7EED;&#x63A2;&#x6D4B;&#x5931;&#x8D25;&#x591A;&#x5C11;&#x6B21;&#x624D;&#x88AB;&#x8BA4;&#x5B9A;&#x4E3A;&#x5931;&#x8D25;&#x3002;&#x9ED8;&#x8BA4;&#x662F; 3&#x3002;&#x6700;&#x5C0F;&#x503C;&#x662F; 1&#x3002;</li>
</ul>
<p>HTTP probe &#x4E2D;&#x53EF;&#x4EE5;&#x7ED9; <code>httpGet</code> &#x8BBE;&#x7F6E;&#x5176;&#x4ED6;&#x914D;&#x7F6E;&#x9879;&#xFF1A;</p>
<ul>
<li><code>host</code>&#xFF1A;&#x8FDE;&#x63A5;&#x7684;&#x4E3B;&#x673A;&#x540D;&#xFF0C;&#x9ED8;&#x8BA4;&#x8FDE;&#x63A5;&#x5230; pod &#x7684; IP&#x3002;&#x4F60;&#x53EF;&#x80FD;&#x60F3;&#x5728; http header &#x4E2D;&#x8BBE;&#x7F6E; &quot;Host&quot; &#x800C;&#x4E0D;&#x662F;&#x4F7F;&#x7528; IP&#x3002;</li>
<li><code>scheme</code>&#xFF1A;&#x8FDE;&#x63A5;&#x4F7F;&#x7528;&#x7684; schema&#xFF0C;&#x9ED8;&#x8BA4; HTTP&#x3002;</li>
<li><code>path</code>: &#x8BBF;&#x95EE;&#x7684; HTTP server &#x7684; path&#x3002;</li>
<li><code>httpHeaders</code>&#xFF1A;&#x81EA;&#x5B9A;&#x4E49;&#x8BF7;&#x6C42;&#x7684; header&#x3002;HTTP &#x8FD0;&#x884C;&#x91CD;&#x590D;&#x7684; header&#x3002;</li>
<li><code>port</code>&#xFF1A;&#x8BBF;&#x95EE;&#x7684;&#x5BB9;&#x5668;&#x7684;&#x7AEF;&#x53E3;&#x540D;&#x5B57;&#x6216;&#x8005;&#x7AEF;&#x53E3;&#x53F7;&#x3002;&#x7AEF;&#x53E3;&#x53F7;&#x5FC5;&#x987B;&#x4ECB;&#x4E8E; 1 &#x548C; 65535 &#x4E4B;&#x95F4;&#x3002;</li>
</ul>
<p>&#x5BF9;&#x4E8E; HTTP &#x63A2;&#x6D4B;&#x5668;&#xFF0C;kubelet &#x5411;&#x6307;&#x5B9A;&#x7684;&#x8DEF;&#x5F84;&#x548C;&#x7AEF;&#x53E3;&#x53D1;&#x9001; HTTP &#x8BF7;&#x6C42;&#x4EE5;&#x6267;&#x884C;&#x68C0;&#x67E5;&#x3002; Kubelet &#x5C06; probe &#x53D1;&#x9001;&#x5230;&#x5BB9;&#x5668;&#x7684; IP &#x5730;&#x5740;&#xFF0C;&#x9664;&#x975E;&#x5730;&#x5740;&#x88AB; <code>httpGet</code> &#x4E2D;&#x7684;&#x53EF;&#x9009; <code>host</code> &#x5B57;&#x6BB5;&#x8986;&#x76D6;&#x3002; &#x5728;&#x5927;&#x591A;&#x6570;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x4F60;&#x4E0D;&#x60F3;&#x8BBE;&#x7F6E;&#x4E3B;&#x673A;&#x5B57;&#x6BB5;&#x3002; &#x6709;&#x4E00;&#x79CD;&#x60C5;&#x51B5;&#x4E0B;&#x4F60;&#x53EF;&#x4EE5;&#x8BBE;&#x7F6E;&#x5B83;&#x3002; &#x5047;&#x8BBE;&#x5BB9;&#x5668;&#x5728; 127.0.0.1 &#x4E0A;&#x4FA6;&#x542C;&#xFF0C;&#x5E76;&#x4E14; Pod &#x7684; <code>hostNetwork</code> &#x5B57;&#x6BB5;&#x4E3A; true&#x3002; &#x7136;&#x540E;&#xFF0C;&#x5728; <code>httpGet</code> &#x4E0B;&#x7684; <code>host</code> &#x5E94;&#x8BE5;&#x8BBE;&#x7F6E;&#x4E3A; 127.0.0.1&#x3002; &#x5982;&#x679C;&#x4F60;&#x7684; pod &#x4F9D;&#x8D56;&#x4E8E;&#x865A;&#x62DF;&#x4E3B;&#x673A;&#xFF0C;&#x8FD9;&#x53EF;&#x80FD;&#x662F;&#x66F4;&#x5E38;&#x89C1;&#x7684;&#x60C5;&#x51B5;&#xFF0C;&#x4F60;&#x4E0D;&#x5E94;&#x8BE5;&#x662F;&#x7528; <code>host</code>&#xFF0C;&#x800C;&#x662F;&#x5E94;&#x8BE5;&#x5728; <code>httpHeaders</code> &#x4E2D;&#x8BBE;&#x7F6E; <code>Host</code> &#x5934;&#x3002;</p>
<h2 id="&#x53C2;&#x8003;">&#x53C2;&#x8003;</h2>
<ul>
<li><a href="https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes" target="_blank">Container Probes - kubernetes.io</a></li>
</ul>
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