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1. 前言
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2. 概念原理
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2.1 设计理念
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2.2 Objects
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2.2.1 Pod
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2.2.1.1 Pod解析
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2.2.1.2 Init容器
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2.2.1.3 Pod安全策略
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2.2.1.4 Pod的生命周期
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2.2.2 Node
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2.2.3 Namespace
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2.2.4 Service
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2.2.5 Volume和Persistent Volume
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2.2.6 Deployment
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2.2.7 Secret
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2.2.8 StatefulSet
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2.2.9 DaemonSet
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2.2.10 ServiceAccount
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2.2.11 ReplicationController和ReplicaSet
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2.2.12 Job
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2.2.13 CronJob
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2.2.14 Ingress
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2.2.15 ConfigMap
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2.2.16 Horizontal Pod Autoscaling
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2.2.17 Label
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2.2.18 垃圾收集
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2.2.19 NetworkPolicy
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3. 用户指南
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3.1 资源配置
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3.1.1 配置Pod的liveness和readiness探针
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3.1.2 配置Pod的Service Account
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3.2 命令使用
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3.2.1 使用kubectl
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3.2.2 docker用户过度到kubectl命令行指南
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3.3 集群安全性管理
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3.3.1 管理集群中的TLS
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3.3.2 kubelet的认证授权
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3.3.3 TLS bootstrap
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2017-08-31 14:23:44 +08:00
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3.3.4 kubectl的用户认证授权
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3.3.5 RBAC——基于角色的访问控制
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2017-09-07 14:13:59 +08:00
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3.3.6 IP伪装代理
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3.4 访问 Kubernetes 集群
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3.4.1 访问集群
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3.4.2 使用 kubeconfig 文件配置跨集群认证
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3.4.3 通过端口转发访问集群中的应用程序
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<li class="chapter " data-level="1.3.4.4" data-path="../guide/service-access-application-cluster.html">
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3.4.4 使用 service 访问群集中的应用程序
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<li class="chapter " data-level="1.3.5" data-path="../guide/application-development-deployment-flow.html">
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3.5 在kubernetes中开发部署应用
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3.5.1 适用于kubernetes的应用开发部署流程
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3.5.2 迁移传统应用到kubernetes中——以Hadoop YARN为例
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4. 最佳实践
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4.1 在CentOS上部署kubernetes1.6集群
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<li class="chapter " data-level="1.4.1.1" data-path="../practice/create-tls-and-secret-key.html">
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4.1.1 创建TLS证书和秘钥
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4.1.2 创建kubeconfig文件
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<li class="chapter " data-level="1.4.1.3" data-path="../practice/etcd-cluster-installation.html">
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4.1.3 创建高可用etcd集群
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4.1.4 安装kubectl命令行工具
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4.1.5 部署master节点
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4.1.6 部署node节点
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<li class="chapter " data-level="1.4.1.7" data-path="../practice/kubedns-addon-installation.html">
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4.1.7 安装kubedns插件
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<li class="chapter " data-level="1.4.1.8" data-path="../practice/dashboard-addon-installation.html">
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4.1.8 安装dashboard插件
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<li class="chapter " data-level="1.4.1.9" data-path="../practice/heapster-addon-installation.html">
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4.1.9 安装heapster插件
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<li class="chapter " data-level="1.4.1.10" data-path="../practice/efk-addon-installation.html">
<a href="../practice/efk-addon-installation.html">
4.1.10 安装EFK插件
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</ul>
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<li class="chapter " data-level="1.4.2" data-path="../practice/service-discovery-and-loadbalancing.html">
<a href="../practice/service-discovery-and-loadbalancing.html">
4.2 服务发现与负载均衡
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<li class="chapter " data-level="1.4.2.1" data-path="../practice/traefik-ingress-installation.html">
<a href="../practice/traefik-ingress-installation.html">
4.2.1 安装Traefik ingress
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<li class="chapter " data-level="1.4.2.2" data-path="../practice/distributed-load-test.html">
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4.2.2 分布式负载测试
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<li class="chapter " data-level="1.4.2.3" data-path="../practice/network-and-cluster-perfermance-test.html">
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4.2.3 网络和集群性能测试
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<li class="chapter " data-level="1.4.2.4" data-path="../practice/edge-node-configuration.html">
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4.2.4 边缘节点配置
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<li class="chapter " data-level="1.4.3" data-path="../practice/operation.html">
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4.3 运维管理
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<li class="chapter " data-level="1.4.3.1" data-path="../practice/service-rolling-update.html">
<a href="../practice/service-rolling-update.html">
4.3.1 服务滚动升级
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<li class="chapter " data-level="1.4.3.2" data-path="../practice/app-log-collection.html">
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4.3.2 应用日志收集
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<li class="chapter " data-level="1.4.3.3" data-path="../practice/configuration-best-practice.html">
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4.3.3 配置最佳实践
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<li class="chapter " data-level="1.4.3.4" data-path="../practice/monitor.html">
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4.3.4 集群及应用监控
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<li class="chapter " data-level="1.4.3.5" data-path="../practice/jenkins-ci-cd.html">
<a href="../practice/jenkins-ci-cd.html">
4.3.5 使用Jenkins进行持续构建与发布
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<li class="chapter " data-level="1.4.3.6" data-path="../practice/data-persistence-problem.html">
<a href="../practice/data-persistence-problem.html">
4.3.6 数据持久化问题
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4.3.7 管理容器的计算资源
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4.4 存储管理
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4.4.1 GlusterFS
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<li class="chapter " data-level="1.4.4.1.1" data-path="../practice/using-glusterfs-for-persistent-storage.html">
<a href="../practice/using-glusterfs-for-persistent-storage.html">
4.4.1.1 使用GlusterFS做持久化存储
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<li class="chapter " data-level="1.4.4.1.2" data-path="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
<a href="../practice/storage-for-containers-using-glusterfs-with-openshift.html">
4.4.1.2 在OpenShift中使用GlusterFS做持久化存储
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<li class="chapter " data-level="1.4.4.2" data-path="../practice/cephfs.html">
<a href="../practice/cephfs.html">
4.4.2 CephFS
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<li class="chapter " data-level="1.4.4.2.1" data-path="../practice/using-ceph-for-persistent-storage.html">
<a href="../practice/using-ceph-for-persistent-storage.html">
4.4.2.1 使用Ceph做持久化存储
</a>
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</li>
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</ul>
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<li class="chapter " data-level="1.5" data-path="../usecases/">
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5. 领域应用
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<li class="chapter " data-level="1.5.1" data-path="../usecases/microservices.html">
<a href="../usecases/microservices.html">
5.1 微服务架构
</a>
<ul class="articles">
<li class="chapter " data-level="1.5.1.1" data-path="../usecases/istio.html">
<a href="../usecases/istio.html">
5.1.1 Istio
</a>
<ul class="articles">
<li class="chapter " data-level="1.5.1.1.1" data-path="../usecases/istio-installation.html">
<a href="../usecases/istio-installation.html">
5.1.1.1 安装istio
</a>
</li>
<li class="chapter " data-level="1.5.1.1.2" data-path="../usecases/configuring-request-routing.html">
<a href="../usecases/configuring-request-routing.html">
5.1.1.2 配置请求的路由规则
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.5.1.2" data-path="../usecases/linkerd.html">
<a href="../usecases/linkerd.html">
5.1.2 Linkerd
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<li class="chapter " data-level="1.5.1.2.1" data-path="../usecases/linkerd-user-guide.html">
<a href="../usecases/linkerd-user-guide.html">
5.1.2.1 Linkerd 使用指南
</a>
</li>
</ul>
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<li class="chapter " data-level="1.5.1.3" data-path="../usecases/service-discovery-in-microservices.html">
<a href="../usecases/service-discovery-in-microservices.html">
5.1.3 微服务中的服务发现
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.5.2" data-path="../usecases/big-data.html">
<a href="../usecases/big-data.html">
5.2 大数据
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<ul class="articles">
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<li class="chapter " data-level="1.5.2.1" data-path="../usecases/spark-standalone-on-kubernetes.html">
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<a href="../usecases/spark-standalone-on-kubernetes.html">
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5.2.1 Spark standalone on Kubernetes
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</a>
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</li>
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<li class="chapter " data-level="1.5.2.2" data-path="../usecases/running-spark-with-kubernetes-native-scheduler.html">
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<a href="../usecases/running-spark-with-kubernetes-native-scheduler.html">
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5.2.2 运行支持kubernetes原生调度的Spark程序
</a>
2017-08-21 17:44:43 +08:00
</li>
</ul>
2017-08-30 16:52:33 +08:00
</li>
<li class="chapter " data-level="1.5.3" data-path="../usecases/serverless.html">
<a href="../usecases/serverless.html">
5.3 Serverless架构
</a>
2017-08-21 17:44:43 +08:00
</li>
</ul>
</li>
<li class="chapter " data-level="1.6" data-path="../develop/">
<a href="../develop/">
6. 开发指南
</a>
<ul class="articles">
<li class="chapter " data-level="1.6.1" data-path="../develop/developing-environment.html">
<a href="../develop/developing-environment.html">
6.1 开发环境搭建
</a>
</li>
<li class="chapter " data-level="1.6.2" data-path="../develop/testing.html">
<a href="../develop/testing.html">
6.2 单元测试和集成测试
</a>
</li>
<li class="chapter " data-level="1.6.3" data-path="../develop/client-go-sample.html">
<a href="../develop/client-go-sample.html">
6.3 client-go示例
</a>
</li>
<li class="chapter " data-level="1.6.4" data-path="../develop/contribute.html">
<a href="../develop/contribute.html">
6.4 社区贡献
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.7" data-path="../appendix/">
<a href="../appendix/">
7. 附录
</a>
<ul class="articles">
<li class="chapter " data-level="1.7.1" data-path="../appendix/docker-best-practice.html">
<a href="../appendix/docker-best-practice.html">
7.1 Docker最佳实践
</a>
</li>
<li class="chapter " data-level="1.7.2" data-path="../appendix/issues.html">
<a href="../appendix/issues.html">
7.2 问题记录
</a>
</li>
<li class="chapter " data-level="1.7.3" data-path="../appendix/tricks.html">
<a href="../appendix/tricks.html">
7.3 使用技巧
</a>
</li>
</ul>
</li>
<li class="divider"></li>
<li>
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
本書使用 GitBook 釋出
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<h1>
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<a href=".." >2.2.9 DaemonSet</a>
</h1>
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<h1 id="daemonset">DaemonSet</h1>
<h2 id="&#x4EC0;&#x4E48;&#x662F;-daemonset&#xFF1F;">&#x4EC0;&#x4E48;&#x662F; DaemonSet&#xFF1F;</h2>
<p> <em>DaemonSet</em> &#x786E;&#x4FDD;&#x5168;&#x90E8;&#xFF08;&#x6216;&#x8005;&#x4E00;&#x4E9B;&#xFF09;Node &#x4E0A;&#x8FD0;&#x884C;&#x4E00;&#x4E2A; Pod &#x7684;&#x526F;&#x672C;&#x3002;&#x5F53;&#x6709; Node &#x52A0;&#x5165;&#x96C6;&#x7FA4;&#x65F6;&#xFF0C;&#x4E5F;&#x4F1A;&#x4E3A;&#x4ED6;&#x4EEC;&#x65B0;&#x589E;&#x4E00;&#x4E2A; Pod &#x3002;&#x5F53;&#x6709; Node &#x4ECE;&#x96C6;&#x7FA4;&#x79FB;&#x9664;&#x65F6;&#xFF0C;&#x8FD9;&#x4E9B; Pod &#x4E5F;&#x4F1A;&#x88AB;&#x56DE;&#x6536;&#x3002;&#x5220;&#x9664; DaemonSet &#x5C06;&#x4F1A;&#x5220;&#x9664;&#x5B83;&#x521B;&#x5EFA;&#x7684;&#x6240;&#x6709; Pod&#x3002;</p>
<p>&#x4F7F;&#x7528; DaemonSet &#x7684;&#x4E00;&#x4E9B;&#x5178;&#x578B;&#x7528;&#x6CD5;&#xFF1A;</p>
<ul>
<li>&#x8FD0;&#x884C;&#x96C6;&#x7FA4;&#x5B58;&#x50A8; daemon&#xFF0C;&#x4F8B;&#x5982;&#x5728;&#x6BCF;&#x4E2A; Node &#x4E0A;&#x8FD0;&#x884C; <code>glusterd</code>&#x3001;<code>ceph</code>&#x3002;</li>
<li>&#x5728;&#x6BCF;&#x4E2A; Node &#x4E0A;&#x8FD0;&#x884C;&#x65E5;&#x5FD7;&#x6536;&#x96C6; daemon&#xFF0C;&#x4F8B;&#x5982;<code>fluentd</code>&#x3001;<code>logstash</code>&#x3002;</li>
<li>&#x5728;&#x6BCF;&#x4E2A; Node &#x4E0A;&#x8FD0;&#x884C;&#x76D1;&#x63A7; daemon&#xFF0C;&#x4F8B;&#x5982; <a href="https://github.com/prometheus/node_exporter" target="_blank">Prometheus Node Exporter</a>&#x3001;<code>collectd</code>&#x3001;Datadog &#x4EE3;&#x7406;&#x3001;New Relic &#x4EE3;&#x7406;&#xFF0C;&#x6216; Ganglia <code>gmond</code>&#x3002;</li>
</ul>
<p>&#x4E00;&#x4E2A;&#x7B80;&#x5355;&#x7684;&#x7528;&#x6CD5;&#x662F;&#xFF0C;&#x5728;&#x6240;&#x6709;&#x7684; Node &#x4E0A;&#x90FD;&#x5B58;&#x5728;&#x4E00;&#x4E2A; DaemonSet&#xFF0C;&#x5C06;&#x88AB;&#x4F5C;&#x4E3A;&#x6BCF;&#x79CD;&#x7C7B;&#x578B;&#x7684; daemon &#x4F7F;&#x7528;&#x3002;
&#x4E00;&#x4E2A;&#x7A0D;&#x5FAE;&#x590D;&#x6742;&#x7684;&#x7528;&#x6CD5;&#x53EF;&#x80FD;&#x662F;&#xFF0C;&#x5BF9;&#x5355;&#x72EC;&#x7684;&#x6BCF;&#x79CD;&#x7C7B;&#x578B;&#x7684; daemon &#x4F7F;&#x7528;&#x591A;&#x4E2A; DaemonSet&#xFF0C;&#x4F46;&#x5177;&#x6709;&#x4E0D;&#x540C;&#x7684;&#x6807;&#x5FD7;&#xFF0C;&#x548C;/&#x6216;&#x5BF9;&#x4E0D;&#x540C;&#x786C;&#x4EF6;&#x7C7B;&#x578B;&#x5177;&#x6709;&#x4E0D;&#x540C;&#x7684;&#x5185;&#x5B58;&#x3001;CPU&#x8981;&#x6C42;&#x3002;</p>
<h2 id="&#x7F16;&#x5199;-daemonset-spec">&#x7F16;&#x5199; DaemonSet Spec</h2>
<h3 id="&#x5FC5;&#x9700;&#x5B57;&#x6BB5;">&#x5FC5;&#x9700;&#x5B57;&#x6BB5;</h3>
<p>&#x548C;&#x5176;&#x5B83;&#x6240;&#x6709; Kubernetes &#x914D;&#x7F6E;&#x4E00;&#x6837;&#xFF0C;DaemonSet &#x9700;&#x8981; <code>apiVersion</code>&#x3001;<code>kind</code> &#x548C; <code>metadata</code>&#x5B57;&#x6BB5;&#x3002;&#x6709;&#x5173;&#x914D;&#x7F6E;&#x6587;&#x4EF6;&#x7684;&#x901A;&#x7528;&#x4FE1;&#x606F;&#xFF0C;&#x8BE6;&#x89C1;&#x6587;&#x6863; <a href="https://kubernetes.io/docs/user-guide/deploying-applications/" target="_blank">&#x90E8;&#x7F72;&#x5E94;&#x7528;</a>&#x3001;<a href="https://kubernetes.io/docs/user-guide/configuring-containers/" target="_blank">&#x914D;&#x7F6E;&#x5BB9;&#x5668;</a> &#x548C; <a href="https://kubernetes.io/docs/concepts/tools/kubectl/object-management-overview/" target="_blank">&#x8D44;&#x6E90;&#x7BA1;&#x7406;</a> &#x3002;</p>
<p>DaemonSet &#x4E5F;&#x9700;&#x8981;&#x4E00;&#x4E2A; <a href="https://git.k8s.io/community/contributors/devel/api-conventions.md#spec-and-status" target="_blank"><code>.spec</code></a> &#x914D;&#x7F6E;&#x6BB5;&#x3002;</p>
<h3 id="pod-&#x6A21;&#x677F;">Pod &#x6A21;&#x677F;</h3>
<p><code>.spec</code> &#x552F;&#x4E00;&#x5FC5;&#x9700;&#x7684;&#x5B57;&#x6BB5;&#x662F; <code>.spec.template</code>&#x3002;</p>
<p><code>.spec.template</code> &#x662F;&#x4E00;&#x4E2A; <a href="https://kubernetes.io/docs/user-guide/replication-controller/#pod-template" target="_blank">Pod &#x6A21;&#x677F;</a>&#x3002;
&#x5B83;&#x4E0E; <a href="https://kubernetes.io/docs/user-guide/pods" target="_blank">Pod</a> &#x5177;&#x6709;&#x76F8;&#x540C;&#x7684; schema&#xFF0C;&#x9664;&#x4E86;&#x5B83;&#x662F;&#x5D4C;&#x5957;&#x7684;&#xFF0C;&#x800C;&#x4E14;&#x4E0D;&#x5177;&#x6709; <code>apiVersion</code> &#x6216; <code>kind</code> &#x5B57;&#x6BB5;&#x3002;</p>
<p>Pod &#x9664;&#x4E86;&#x5FC5;&#x987B;&#x5B57;&#x6BB5;&#x5916;&#xFF0C;&#x5728; DaemonSet &#x4E2D;&#x7684; Pod &#x6A21;&#x677F;&#x5FC5;&#x987B;&#x6307;&#x5B9A;&#x5408;&#x7406;&#x7684;&#x6807;&#x7B7E;&#xFF08;&#x67E5;&#x770B; <a href="#pod-selector">pod selector</a>&#xFF09;&#x3002;</p>
<p>&#x5728; DaemonSet &#x4E2D;&#x7684; Pod &#x6A21;&#x677F;&#x5FC5;&#x9700;&#x5177;&#x6709;&#x4E00;&#x4E2A;&#x503C;&#x4E3A; <code>Always</code> &#x7684; <a href="https://kubernetes.io/docs/user-guide/pod-states" target="_blank"><code>RestartPolicy</code></a>&#xFF0C;&#x6216;&#x8005;&#x672A;&#x6307;&#x5B9A;&#x5B83;&#x7684;&#x503C;&#xFF0C;&#x9ED8;&#x8BA4;&#x662F; <code>Always</code>&#x3002;</p>
<h3 id="pod-selector">Pod Selector</h3>
<p><code>.spec.selector</code> &#x5B57;&#x6BB5;&#x8868;&#x793A; Pod Selector&#xFF0C;&#x5B83;&#x4E0E; <a href="https://kubernetes.io/docs/concepts/jobs/run-to-completion-finite-workloads/" target="_blank">Job</a> &#x6216;&#x5176;&#x5B83;&#x8D44;&#x6E90;&#x7684; <code>.sper.selector</code> &#x7684;&#x539F;&#x7406;&#x662F;&#x76F8;&#x540C;&#x7684;&#x3002;</p>
<p><code>spec.selector</code> &#x8868;&#x793A;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#xFF0C;&#x5B83;&#x7531;&#x5982;&#x4E0B;&#x4E24;&#x4E2A;&#x5B57;&#x6BB5;&#x7EC4;&#x6210;&#xFF1A;</p>
<ul>
<li><code>matchLabels</code> - &#x4E0E; <a href="https://kubernetes.io/docs/concepts/workloads/controllers/replicationcontroller/" target="_blank">ReplicationController</a> &#x7684; <code>.spec.selector</code> &#x7684;&#x539F;&#x7406;&#x76F8;&#x540C;&#x3002;</li>
<li><code>matchExpressions</code> - &#x5141;&#x8BB8;&#x6784;&#x5EFA;&#x66F4;&#x52A0;&#x590D;&#x6742;&#x7684; Selector&#xFF0C;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x6307;&#x5B9A; key&#x3001;value &#x5217;&#x8868;&#xFF0C;&#x4EE5;&#x53CA;&#x4E0E; key &#x548C; value &#x5217;&#x8868;&#x7684;&#x76F8;&#x5173;&#x7684;&#x64CD;&#x4F5C;&#x7B26;&#x3002;</li>
</ul>
<p>&#x5F53;&#x4E0A;&#x8FF0;&#x4E24;&#x4E2A;&#x5B57;&#x6BB5;&#x90FD;&#x6307;&#x5B9A;&#x65F6;&#xFF0C;&#x7ED3;&#x679C;&#x8868;&#x793A;&#x7684;&#x662F; AND &#x5173;&#x7CFB;&#x3002;</p>
<p>&#x5982;&#x679C;&#x6307;&#x5B9A;&#x4E86; <code>.spec.selector</code>&#xFF0C;&#x5FC5;&#x987B;&#x4E0E; <code>.spec.template.metadata.labels</code> &#x76F8;&#x5339;&#x914D;&#x3002;&#x5982;&#x679C;&#x6CA1;&#x6709;&#x6307;&#x5B9A;&#xFF0C;&#x5B83;&#x4EEC;&#x9ED8;&#x8BA4;&#x662F;&#x7B49;&#x4EF7;&#x7684;&#x3002;&#x5982;&#x679C;&#x4E0E;&#x5B83;&#x4EEC;&#x914D;&#x7F6E;&#x7684;&#x4E0D;&#x5339;&#x914D;&#xFF0C;&#x5219;&#x4F1A;&#x88AB; API &#x62D2;&#x7EDD;&#x3002;</p>
<p>&#x5982;&#x679C; Pod &#x7684; label &#x4E0E; selector &#x5339;&#x914D;&#xFF0C;&#x6216;&#x8005;&#x76F4;&#x63A5;&#x57FA;&#x4E8E;&#x5176;&#x5B83;&#x7684; DaemonSet&#x3001;&#x6216;&#x8005; Controller&#xFF08;&#x4F8B;&#x5982; ReplicationController&#xFF09;&#xFF0C;&#x4E5F;&#x4E0D;&#x53EF;&#x4EE5;&#x521B;&#x5EFA;&#x4EFB;&#x4F55; Pod&#x3002;
&#x5426;&#x5219; DaemonSet Controller &#x5C06;&#x8BA4;&#x4E3A;&#x90A3;&#x4E9B; Pod &#x662F;&#x5B83;&#x521B;&#x5EFA;&#x7684;&#x3002;Kubernetes &#x4E0D;&#x4F1A;&#x963B;&#x6B62;&#x8FD9;&#x6837;&#x505A;&#x3002;&#x4E00;&#x4E2A;&#x573A;&#x666F;&#x662F;&#xFF0C;&#x53EF;&#x80FD;&#x5E0C;&#x671B;&#x5728;&#x4E00;&#x4E2A;&#x5177;&#x6709;&#x4E0D;&#x540C;&#x503C;&#x7684;&#x3001;&#x7528;&#x6765;&#x6D4B;&#x8BD5;&#x7528;&#x7684; Node &#x4E0A;&#x624B;&#x52A8;&#x521B;&#x5EFA; Pod&#x3002;</p>
<h3 id="&#x4EC5;&#x5728;&#x76F8;&#x540C;&#x7684;-node-&#x4E0A;&#x8FD0;&#x884C;-pod">&#x4EC5;&#x5728;&#x76F8;&#x540C;&#x7684; Node &#x4E0A;&#x8FD0;&#x884C; Pod</h3>
<p>&#x5982;&#x679C;&#x6307;&#x5B9A;&#x4E86; <code>.spec.template.spec.nodeSelector</code>&#xFF0C;DaemonSet Controller &#x5C06;&#x5728;&#x80FD;&#x591F;&#x5339;&#x914D;&#x4E0A; <a href="https://kubernetes.io/docs/concepts/configuration/assign-pod-node/" target="_blank">Node Selector</a> &#x7684; Node &#x4E0A;&#x521B;&#x5EFA; Pod&#x3002;
&#x7C7B;&#x4F3C;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#xFF0C;&#x53EF;&#x4EE5;&#x6307;&#x5B9A; <code>.spec.template.spec.affinity</code>&#xFF0C;&#x7136;&#x540E; DaemonSet Controller &#x5C06;&#x5728;&#x80FD;&#x591F;&#x5339;&#x914D;&#x4E0A; <a href="https://kubernetes.io/docs/concepts/configuration/assign-pod-node/" target="_blank">Node Affinity</a> &#x7684; Node &#x4E0A;&#x521B;&#x5EFA; Pod&#x3002;
&#x5982;&#x679C;&#x6839;&#x672C;&#x5C31;&#x6CA1;&#x6709;&#x6307;&#x5B9A;&#xFF0C;&#x5219; DaemonSet Controller &#x5C06;&#x5728;&#x6240;&#x6709; Node &#x4E0A;&#x521B;&#x5EFA; Pod&#x3002;</p>
<h2 id="&#x5982;&#x679C;&#x8C03;&#x5EA6;-daemon-pod">&#x5982;&#x679C;&#x8C03;&#x5EA6; Daemon Pod</h2>
<p>&#x6B63;&#x5E38;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;Pod &#x8FD0;&#x884C;&#x5728;&#x54EA;&#x4E2A;&#x673A;&#x5668;&#x4E0A;&#x662F;&#x7531; Kubernetes &#x8C03;&#x5EA6;&#x5668;&#x8FDB;&#x884C;&#x9009;&#x62E9;&#x7684;&#x3002;&#x7136;&#x800C;&#xFF0C;&#x7531; Daemon Controller &#x521B;&#x5EFA;&#x7684; Pod &#x5DF2;&#x7ECF;&#x786E;&#x5B9A;&#x4E86;&#x5728;&#x54EA;&#x4E2A;&#x673A;&#x5668;&#x4E0A;&#xFF08;Pod &#x521B;&#x5EFA;&#x65F6;&#x6307;&#x5B9A;&#x4E86; <code>.spec.nodeName</code>&#xFF09;&#xFF0C;&#x56E0;&#x6B64;&#xFF1A;</p>
<ul>
<li>DaemonSet Controller &#x5E76;&#x4E0D;&#x5173;&#x5FC3;&#x4E00;&#x4E2A; Node &#x7684; <a href="https://kubernetes.io/docs/admin/node/#manual-node-administration" target="_blank"><code>unschedulable</code></a> &#x5B57;&#x6BB5;&#x3002;</li>
<li>DaemonSet Controller &#x53EF;&#x4EE5;&#x521B;&#x5EFA; Pod&#xFF0C;&#x5373;&#x4F7F;&#x8C03;&#x5EA6;&#x5668;&#x8FD8;&#x6CA1;&#x6709;&#x88AB;&#x542F;&#x52A8;&#xFF0C;&#x8FD9;&#x5BF9;&#x96C6;&#x7FA4;&#x542F;&#x52A8;&#x662F;&#x975E;&#x5E38;&#x6709;&#x5E2E;&#x52A9;&#x7684;&#x3002;</li>
</ul>
<p>Daemon Pod &#x5173;&#x5FC3; <a href="https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#taints-and-tolerations-beta-feature" target="_blank">Taint &#x548C; Toleration</a>&#xFF0C;&#x5B83;&#x4EEC;&#x4F1A;&#x4E3A;&#x6CA1;&#x6709;&#x6307;&#x5B9A; <code>tolerationSeconds</code> &#x7684; <code>node.alpha.kubernetes.io/notReady</code> &#x548C; <code>node.alpha.kubernetes.io/unreachable</code> &#x7684; Taint&#xFF0C;&#x800C;&#x521B;&#x5EFA;&#x5177;&#x6709; <code>NoExecute</code> &#x7684; Toleration&#x3002;&#x8FD9;&#x786E;&#x4FDD;&#x4E86;&#x5F53; alpha &#x7279;&#x6027;&#x7684; <code>TaintBasedEvictions</code> &#x88AB;&#x542F;&#x7528;&#xFF0C;&#x5F53; Node &#x51FA;&#x73B0;&#x6545;&#x969C;&#xFF0C;&#x6BD4;&#x5982;&#x7F51;&#x7EDC;&#x5206;&#x533A;&#xFF0C;&#x8FD9;&#x65F6;&#x5B83;&#x4EEC;&#x5C06;&#x4E0D;&#x4F1A;&#x88AB;&#x6E05;&#x9664;&#x6389;&#xFF08;&#x5F53; <code>TaintBasedEvictions</code> &#x7279;&#x6027;&#x6CA1;&#x6709;&#x542F;&#x7528;&#xFF0C;&#x5728;&#x8FD9;&#x4E9B;&#x573A;&#x666F;&#x4E0B;&#x4E5F;&#x4E0D;&#x4F1A;&#x88AB;&#x6E05;&#x9664;&#xFF0C;&#x4F46;&#x4F1A;&#x56E0;&#x4E3A; NodeController &#x7684;&#x786C;&#x7F16;&#x7801;&#x884C;&#x4E3A;&#x800C;&#x88AB;&#x6E05;&#x9664;&#xFF0C;Toleration &#x662F;&#x4E0D;&#x4F1A;&#x7684;&#xFF09;&#x3002;</p>
<h2 id="&#x4E0E;-daemon-pod-&#x901A;&#x4FE1;">&#x4E0E; Daemon Pod &#x901A;&#x4FE1;</h2>
<p>&#x4E0E; DaemonSet &#x4E2D;&#x7684; Pod &#x8FDB;&#x884C;&#x901A;&#x4FE1;&#xFF0C;&#x51E0;&#x79CD;&#x53EF;&#x80FD;&#x7684;&#x6A21;&#x5F0F;&#x5982;&#x4E0B;&#xFF1A;</p>
<ul>
<li><strong>Push</strong>&#xFF1A;&#x914D;&#x7F6E; DaemonSet &#x4E2D;&#x7684; Pod &#x5411;&#x5176;&#x5B83; Service &#x53D1;&#x9001;&#x66F4;&#x65B0;&#xFF0C;&#x4F8B;&#x5982;&#x7EDF;&#x8BA1;&#x6570;&#x636E;&#x5E93;&#x3002;&#x5B83;&#x4EEC;&#x6CA1;&#x6709;&#x5BA2;&#x6237;&#x7AEF;&#x3002;</li>
<li><strong>NodeIP &#x548C;&#x5DF2;&#x77E5;&#x7AEF;&#x53E3;</strong>&#xFF1A;DaemonSet &#x4E2D;&#x7684; Pod &#x53EF;&#x4EE5;&#x4F7F;&#x7528; <code>hostPort</code>&#xFF0C;&#x4ECE;&#x800C;&#x53EF;&#x4EE5;&#x901A;&#x8FC7; Node IP &#x8BBF;&#x95EE;&#x5230; Pod&#x3002;&#x5BA2;&#x6237;&#x7AEF;&#x80FD;&#x901A;&#x8FC7;&#x67D0;&#x79CD;&#x65B9;&#x6CD5;&#x77E5;&#x9053; Node IP &#x5217;&#x8868;&#xFF0C;&#x5E76;&#x4E14;&#x57FA;&#x4E8E;&#x6B64;&#x4E5F;&#x53EF;&#x4EE5;&#x77E5;&#x9053;&#x7AEF;&#x53E3;&#x3002;</li>
<li><strong>DNS</strong>&#xFF1A;&#x521B;&#x5EFA;&#x5177;&#x6709;&#x76F8;&#x540C; Pod Selector &#x7684; <a href="https://kubernetes.io/docs/user-guide/services/#headless-services" target="_blank">Headless Service</a>&#xFF0C;&#x7136;&#x540E;&#x901A;&#x8FC7;&#x4F7F;&#x7528; <code>endpoints</code> &#x8D44;&#x6E90;&#x6216;&#x4ECE; DNS &#x68C0;&#x7D22;&#x5230;&#x591A;&#x4E2A; A &#x8BB0;&#x5F55;&#x6765;&#x53D1;&#x73B0; DaemonSet&#x3002;</li>
<li><strong>Service</strong>&#xFF1A;&#x521B;&#x5EFA;&#x5177;&#x6709;&#x76F8;&#x540C; Pod Selector &#x7684; Service&#xFF0C;&#x5E76;&#x4F7F;&#x7528;&#x8BE5; Service &#x8BBF;&#x95EE;&#x5230;&#x67D0;&#x4E2A;&#x968F;&#x673A; Node &#x4E0A;&#x7684; daemon&#x3002;&#xFF08;&#x6CA1;&#x6709;&#x529E;&#x6CD5;&#x8BBF;&#x95EE;&#x5230;&#x7279;&#x5B9A; Node&#xFF09;</li>
</ul>
<h2 id="&#x66F4;&#x65B0;-daemonset">&#x66F4;&#x65B0; DaemonSet</h2>
<p>&#x5982;&#x679C;&#x4FEE;&#x6539;&#x4E86; Node Label&#xFF0C;DaemonSet &#x5C06;&#x7ACB;&#x523B;&#x5411;&#x65B0;&#x5339;&#x914D;&#x4E0A;&#x7684; Node &#x6DFB;&#x52A0; Pod&#xFF0C;&#x540C;&#x65F6;&#x5220;&#x9664;&#x65B0;&#x8FD1;&#x65E0;&#x6CD5;&#x5339;&#x914D;&#x4E0A;&#x7684; Node &#x4E0A;&#x7684; Pod&#x3002;</p>
<p>&#x53EF;&#x4EE5;&#x4FEE;&#x6539; DaemonSet &#x521B;&#x5EFA;&#x7684; Pod&#x3002;&#x7136;&#x800C;&#xFF0C;&#x4E0D;&#x5141;&#x8BB8;&#x5BF9; Pod &#x7684;&#x6240;&#x6709;&#x5B57;&#x6BB5;&#x8FDB;&#x884C;&#x66F4;&#x65B0;&#x3002;&#x5F53;&#x4E0B;&#x6B21; Node&#xFF08;&#x5373;&#x4F7F;&#x5177;&#x6709;&#x76F8;&#x540C;&#x7684;&#x540D;&#x79F0;&#xFF09;&#x88AB;&#x521B;&#x5EFA;&#x65F6;&#xFF0C;DaemonSet Controller &#x8FD8;&#x4F1A;&#x4F7F;&#x7528;&#x6700;&#x521D;&#x7684;&#x6A21;&#x677F;&#x3002;</p>
<p>&#x53EF;&#x4EE5;&#x5220;&#x9664;&#x4E00;&#x4E2A; DaemonSet&#x3002;&#x5982;&#x679C;&#x4F7F;&#x7528; <code>kubectl</code> &#x5E76;&#x6307;&#x5B9A; <code>--cascade=false</code> &#x9009;&#x9879;&#xFF0C;&#x5219; Pod &#x5C06;&#x88AB;&#x4FDD;&#x7559;&#x5728; Node &#x4E0A;&#x3002;&#x7136;&#x540E;&#x53EF;&#x4EE5;&#x521B;&#x5EFA;&#x5177;&#x6709;&#x4E0D;&#x540C;&#x6A21;&#x677F;&#x7684;&#x65B0; DaemonSet&#x3002;&#x5177;&#x6709;&#x4E0D;&#x540C;&#x6A21;&#x677F;&#x7684;&#x65B0; DaemonSet &#x5C06;&#x97A5;&#x80FD;&#x591F;&#x901A;&#x8FC7; Label &#x5339;&#x914D;&#x8BC6;&#x522B;&#x6240;&#x6709;&#x5DF2;&#x7ECF;&#x5B58;&#x5728;&#x7684; Pod&#x3002;&#x5B83;&#x4E0D;&#x4F1A;&#x4FEE;&#x6539;&#x6216;&#x5220;&#x9664;&#x5B83;&#x4EEC;&#xFF0C;&#x5373;&#x4F7F;&#x662F;&#x9519;&#x8BEF;&#x5339;&#x914D;&#x4E86; Pod &#x6A21;&#x677F;&#x3002;&#x901A;&#x8FC7;&#x5220;&#x9664; Pod &#x6216;&#x8005; &#x5220;&#x9664; Node&#xFF0C;&#x53EF;&#x4EE5;&#x5F3A;&#x5236;&#x521B;&#x5EFA;&#x65B0;&#x7684; Pod&#x3002;</p>
<p>&#x5728; Kubernetes 1.6 &#x6216;&#x4EE5;&#x540E;&#x7248;&#x672C;&#xFF0C;&#x53EF;&#x4EE5;&#x5728; DaemonSet &#x4E0A; <a href="https://kubernetes.io/docs/tasks/manage-daemon/update-daemon-set/" target="_blank">&#x6267;&#x884C;&#x6EDA;&#x52A8;&#x5347;&#x7EA7;</a>&#x3002;</p>
<h3 id="init-&#x811A;&#x672C;">init &#x811A;&#x672C;</h3>
<p>&#x5F88;&#x53EF;&#x80FD;&#x901A;&#x8FC7;&#x76F4;&#x63A5;&#x5728;&#x4E00;&#x4E2A; Node &#x4E0A;&#x542F;&#x52A8; daemon &#x8FDB;&#x7A0B;&#xFF08;&#x4F8B;&#x5982;&#xFF0C;&#x4F7F;&#x7528; <code>init</code>&#x3001;<code>upstartd</code>&#x3001;&#x6216; <code>systemd</code>&#xFF09;&#x3002;&#x8FD9;&#x975E;&#x5E38;&#x597D;&#xFF0C;&#x7136;&#x800C;&#x57FA;&#x4E8E; DaemonSet &#x6765;&#x8FD0;&#x884C;&#x8FD9;&#x4E9B;&#x8FDB;&#x7A0B;&#x6709;&#x5982;&#x4E0B;&#x4E00;&#x4E9B;&#x597D;&#x5904;&#xFF1A;</p>
<ul>
<li>&#x50CF;&#x5BF9;&#x5F85;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x4E00;&#x6837;&#xFF0C;&#x5177;&#x5907;&#x4E3A; daemon &#x63D0;&#x4F9B;&#x76D1;&#x63A7;&#x548C;&#x7BA1;&#x7406;&#x65E5;&#x5FD7;&#x7684;&#x80FD;&#x529B;&#x3002;</li>
<li>&#x4E3A; daemon &#x548C;&#x5E94;&#x7528;&#x57CE;&#x897F;&#x4F7F;&#x7528;&#x76F8;&#x540C;&#x7684;&#x914D;&#x7F6E;&#x8BED;&#x8A00;&#x548C;&#x5DE5;&#x5177;&#xFF08;&#x5982; Pod &#x6A21;&#x677F;&#x3001;<code>kubectl</code>&#xFF09;&#x3002;</li>
<li>Kubernetes &#x672A;&#x6765;&#x7248;&#x672C;&#x53EF;&#x80FD;&#x4F1A;&#x652F;&#x6301;&#x5BF9; DaemonSet &#x521B;&#x5EFA; Pod &#x4E0E; Node&#x5347;&#x7EA7;&#x5DE5;&#x4F5C;&#x6D41;&#x8FDB;&#x884C;&#x96C6;&#x6210;&#x3002;</li>
<li>&#x5728;&#x8D44;&#x6E90;&#x53D7;&#x9650;&#x7684;&#x5BB9;&#x5668;&#x4E2D;&#x8FD0;&#x884C; daemon&#xFF0C;&#x80FD;&#x591F;&#x589E;&#x52A0; daemon &#x548C;&#x5E94;&#x7528;&#x5BB9;&#x5668;&#x7684;&#x9694;&#x79BB;&#x6027;&#x3002;&#x7136;&#x800C;&#x8FD9;&#x4E5F;&#x5B9E;&#x73B0;&#x4E86;&#x5728;&#x5BB9;&#x5668;&#x4E2D;&#x8FD0;&#x884C; daemon&#xFF0C;&#x4F46;&#x5374;&#x4E0D;&#x80FD;&#x5728; Pod &#x4E2D;&#x8FD0;&#x884C;&#xFF08;&#x4F8B;&#x5982;&#xFF0C;&#x76F4;&#x63A5;&#x57FA;&#x4E8E; Docker &#x542F;&#x52A8;&#xFF09;&#x3002;</li>
</ul>
<h3 id="&#x88F8;-pod">&#x88F8; Pod</h3>
<p>&#x53EF;&#x80FD;&#x8981;&#x76F4;&#x63A5;&#x521B;&#x5EFA; Pod&#xFF0C;&#x540C;&#x65F6;&#x6307;&#x5B9A;&#x5176;&#x8FD0;&#x884C;&#x5728;&#x7279;&#x5B9A;&#x7684; Node &#x4E0A;&#x3002;
&#x7136;&#x800C;&#xFF0C;DaemonSet &#x66FF;&#x6362;&#x4E86;&#x7531;&#x4E8E;&#x4EFB;&#x4F55;&#x539F;&#x56E0;&#x88AB;&#x5220;&#x9664;&#x6216;&#x7EC8;&#x6B62;&#x7684; Pod&#xFF0C;&#x4F8B;&#x5982; Node &#x5931;&#x8D25;&#x3001;&#x4F8B;&#x884C;&#x8282;&#x70B9;&#x7EF4;&#x62A4;&#xFF0C;&#x6BD4;&#x5982;&#x5185;&#x548C;&#x5347;&#x7EA7;&#x3002;&#x7531;&#x4E8E;&#x8FD9;&#x4E2A;&#x539F;&#x56E0;&#xFF0C;&#x6211;&#x4EEC;&#x5E94;&#x8BE5;&#x4F7F;&#x7528; DaemonSet &#x800C;&#x4E0D;&#x662F;&#x5355;&#x72EC;&#x521B;&#x5EFA; Pod&#x3002;</p>
<h3 id="&#x9759;&#x6001;-pod">&#x9759;&#x6001; Pod</h3>
<p>&#x5F88;&#x53EF;&#x80FD;&#xFF0C;&#x901A;&#x8FC7;&#x5728;&#x4E00;&#x4E2A;&#x6307;&#x5B9A;&#x76EE;&#x5F55;&#x4E0B;&#x7F16;&#x5199;&#x6587;&#x4EF6;&#x6765;&#x521B;&#x5EFA; Pod&#xFF0C;&#x8BE5;&#x76EE;&#x5F55;&#x53D7; Kubelet &#x6240;&#x76D1;&#x89C6;&#x3002;&#x8FD9;&#x4E9B; Pod &#x88AB;&#x79F0;&#x4E3A; <a href="https://kubernetes.io/docs/concepts/cluster-administration/static-pod/" target="_blank">&#x9759;&#x6001; Pod</a>&#x3002;
&#x4E0D;&#x50CF; DaemonSet&#xFF0C;&#x9759;&#x6001; Pod &#x4E0D;&#x53D7; kubectl &#x548C; &#x5176;&#x5B83; Kubernetes API &#x5BA2;&#x6237;&#x7AEF;&#x7BA1;&#x7406;&#x3002;&#x9759;&#x6001; Pod &#x4E0D;&#x4F9D;&#x8D56;&#x4E8E; apiserver&#xFF0C;&#x8FD9;&#x4F7F;&#x5F97;&#x5B83;&#x4EEC;&#x5728;&#x96C6;&#x7FA4;&#x542F;&#x52A8;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#x975E;&#x5E38;&#x6709;&#x7528;&#x3002;
&#x800C;&#x4E14;&#xFF0C;&#x672A;&#x6765;&#x9759;&#x6001; Pod &#x53EF;&#x80FD;&#x4F1A;&#x88AB;&#x5E9F;&#x5F03;&#x6389;&#x3002;</p>
<h3 id="replication-controller">Replication Controller</h3>
<p>DaemonSet &#x4E0E; <a href="https://kubernetes.io/docs/user-guide/replication-controller" target="_blank">Replication Controller</a> &#x975E;&#x5E38;&#x7C7B;&#x4F3C;&#xFF0C;&#x5B83;&#x4EEC;&#x90FD;&#x80FD;&#x521B;&#x5EFA; Pod&#xFF0C;&#x8FD9;&#x4E9B; Pod &#x90FD;&#x5177;&#x6709;&#x4E0D;&#x671F;&#x671B;&#x88AB;&#x7EC8;&#x6B62;&#x7684;&#x8FDB;&#x7A0B;&#xFF08;&#x4F8B;&#x5982;&#xFF0C;Web &#x670D;&#x52A1;&#x5668;&#x3001;&#x5B58;&#x50A8;&#x670D;&#x52A1;&#x5668;&#xFF09;&#x3002;
&#x4E3A;&#x65E0;&#x72B6;&#x6001;&#x7684; Service &#x4F7F;&#x7528; Replication Controller&#xFF0C;&#x50CF; frontend&#xFF0C;&#x5B9E;&#x73B0;&#x5BF9;&#x526F;&#x672C;&#x7684;&#x6570;&#x91CF;&#x8FDB;&#x884C;&#x6269;&#x7F29;&#x5BB9;&#x3001;&#x5E73;&#x6ED1;&#x5347;&#x7EA7;&#xFF0C;&#x6BD4;&#x4E4B;&#x4E8E;&#x7CBE;&#x786E;&#x63A7;&#x5236; Pod &#x8FD0;&#x884C;&#x5728;&#x67D0;&#x4E2A;&#x4E3B;&#x673A;&#x4E0A;&#x8981;&#x91CD;&#x8981;&#x5F97;&#x591A;&#x3002;&#x9700;&#x8981; Pod &#x526F;&#x672C;&#x603B;&#x662F;&#x8FD0;&#x884C;&#x5728;&#x5168;&#x90E8;&#x6216;&#x7279;&#x5B9A;&#x4E3B;&#x673A;&#x4E0A;&#xFF0C;&#x5E76;&#x9700;&#x8981;&#x5148;&#x4E8E;&#x5176;&#x4ED6; Pod &#x542F;&#x52A8;&#xFF0C;&#x5F53;&#x8FD9;&#x88AB;&#x8BA4;&#x4E3A;&#x975E;&#x5E38;&#x91CD;&#x8981;&#x65F6;&#xFF0C;&#x5E94;&#x8BE5;&#x4F7F;&#x7528; Daemon Controller&#x3002;</p>
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