kubenete使用deploy controller 先生成资源编排文件yaml 再用yaml部署Nginx

妖狐艹你老母 2022-10-16 06:21 184阅读 0赞

Controller是集群中的一个管理和创建容器的对象，pod通过controller对应用进行运维如动态扩缩容、滚动升级等，pod和controller通过标签建立关系，deployment是一个controller，可以部署无状态应用、动态扩缩容和滚动升级等。

下面将用资源编排文件进行部署Nginx应用

1 生成资源编排文件

[root@k8smaster ~]# kubectl create deploy web --image=nginx -o yaml --dry-run > web.yaml
    W0526 20:46:16.279104  111394 helpers.go:535] --dry-run is deprecated and can be replaced with --dry-run=client.
    [root@k8smaster ~]# ls
    anaconda-ks.cfg  web.yaml
    [root@k8smaster ~]# cat web.yaml
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      creationTimestamp: null
      labels:
        app: web
      name: web
    spec:
      replicas: 1
      selector:
        matchLabels:
          app: web
      strategy: {}
      template:
        metadata:
          creationTimestamp: null
          labels:
            app: web
        spec:
          containers:
          - image: nginx
            name: nginx
            resources: {}
    status: {}

2 基于资源编排文件创建pod

[root@k8smaster ~]# kubectl apply -f web.yaml
    deployment.apps/web created
    [root@k8smaster ~]# kubectl get pod
    NAME                   READY   STATUS    RESTARTS   AGE
    web-5dcb957ccc-6w985   1/1     Running   0          23s
    [root@k8smaster ~]# kubectl get deployment
    NAME   READY   UP-TO-DATE   AVAILABLE   AGE
    web    1/1     1            1           46s

# 暴露端口 导出资源编排文件
    [root@k8smaster ~]# kubectl expose deploy web --port=80 --type=NodePort --target-port=80 --name=web6 -o yaml > web6.yaml
    [root@k8smaster ~]# ls
    anaconda-ks.cfg  web6.yaml  web.yaml

# 基于资源编排文件web6 运行
    [root@k8smaster ~]# kubectl apply -f web6.yaml
    Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
    service/web6 configured
    [root@k8smaster ~]# kubectl get pods,svc
    NAME                       READY   STATUS    RESTARTS   AGE
    pod/web-5dcb957ccc-fvdcz   1/1     Running   0          6m7s
    
    NAME                 TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
    service/kubernetes   ClusterIP   10.96.0.1        <none>        443/TCP        9h
    service/nginx        NodePort    10.110.212.204   <none>        80:31816/TCP   9h
    service/web          ClusterIP   10.109.226.118   <none>        80/TCP         105m
    service/web1         ClusterIP   10.97.60.63      <none>        80/TCP         18m
    service/web3         NodePort    10.102.36.72     <none>        80:32270/TCP   8m23s
    service/web6         NodePort    10.110.48.120    <none>        80:31725/TCP   4m3s