pod-test

apiVersion: v1

kind: Pod

metadata:

  name: init-demo

  # 命名空間

  namespace: default

  labels:

    app: nginx

spec:

  # 調度約束：

  # nodeName: 將Pod調度到指定的Node名稱上

  # nodeSelector: 將Pod調度到匹配Label的Node上

  # nodeName: k8s-node1

  # nodeSelector:

  #   env_role: dev

  containers:

  - name: nginx

    image: nginx

    # 鏡像拉去策略：IfNotPresent, Never, Always

    imagePullPolicy: IfNotPresent

    ports:

    - containerPort: 80

    env:

    - name: MYSQL_ROOT_PASSWORD

      value: "password"

    # pod資源請求和限制

    resources:

      requests:

      memory: "64Mi"

      cpu: "250m"

      limits:

      memory: "128Mi"

      cpu: "500m"

    # 健康檢查策略：

    # livenessProbe: 檢查失敗，將殺死容器，根據Pod的restartPolicy來操做

    # readinessProde: 檢查失敗，Kubernetes會把Pod從service endpoints中剔除

    # 健康檢查方法：httpGet, exec, tcpSocket

    livenessProbe:

      # exec:

      #   command:

      #   - cat 

      #   - /tmp/health

      # tcpSocket:

      #   port: 80

      httpGet:

        # scheme: HTTP

        path: /

        port: 80

      initialDelaySeconds: 10

      periodSeconds: 20

    # 掛載目錄

    volumeMounts:

    - name: workdir

      mountPath: /usr/share/nginx/html

  imagePullSecrets:

    name: myregistrykey

  # 重啓策略：Always, Never, Onfailure

  restartPolicy: Always

  # These containers are run during pod initialization初始化容器，先於業務容器開始執行

  initContainers:

  - name: install

    image: busybox

    command:

    - wget

    - "-O"

    - "/work-dir/index.html"

    - http://kubernetes.io

    volumeMounts:

    - name: workdir

      mountPath: "/work-dir"

  dnsPolicy: Default

# 存儲 hostpath, emptydir, nfs, configmap

  volumes:

  - name: workdir

    emptyDir: {}

  - name: data

    hostPath:

    path: /tmp

    type: Directory

  - name: wwwroot

    nfs:

    server: 192.168.0.200

    path: /data/nfs

  - name: filebeat-config

    configMap:

    name: filebeat-config