Kubernetes各组件YAML语法

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我是靠谱客的博主忧虑书包，最近开发中收集的这篇文章主要介绍Kubernetes各组件YAML语法，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

Nginx为例

1.创建NFS共享目录

[ root@localhost ~ ]# yum -y install nfs-utils rpcbind

[ root@localhost ~ ]# mkdir -p /nfsdata

[ root@localhost ~ ]# echo "/nfsdata 192.168.3.0/24(rw,no_passwd_squash,sync)" >> /etc/export

[ root@localhost ~ ]# systemctl enable rpcbind nfs

#开启ipv6

[ root@localhost ~ ]# vim /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0

[ root@localhost ~ ]# sysctl -p

[ root@localhost ~ ]# systemctl start rpcbind nfs

[ root@localhost ~ ]# showmount -e localhost

2.创建PV

[ root@localhost ~ ]# vim nginx.pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nginx
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Recycle
  storageClassName: nfs
  nfs:
    path: /nfsdata
    server: 192.168.3.2

3.创建PVC

[ root@localhost ~ ]# vim nginx.pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nginx
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  storageClassName: nfs

4.创建Deployment

[ root@localhost ~ ]# vim nginx.deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  minReadySeconds: 30             #更新间隔
  strategy:                       #定义滚动更新策略
    rollingUpdate:
      maxSurge: 1                  #允许超出所需规模的最大Pod数量
      maxUnavailable: 0            #允许最大不可用的Pod数量
    type: RollingUpdate            #更新方式滚动更新
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      name: nginx
      labels:
        app: nginx
        version: v1
    spec:
      terminationGracePeriodSeconds: 10     #优雅停止pod,超过一定时间后旧Pod将会被强制杀死
      imagePullSecrets:
      - name: nginx_key
      containers:
      - name: nginx
        image: linuxwei/nginx_test:v1
        imagePullPolicy: IfNotPresent
        env:
          - name: PATH
            value: /usr/local/tomcat/bin:/opt/java/openjdk/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
          - name: LANG
            value: zh_CN.UTF-8
          - name: TZ
            value: Asia/Shanghai
        ports:
        - containerPort: 80
        - containerPort: 8080
        volumeMounts:
        - mountPath: /usr/share/nginx/html
          subPath: nginx
          name: storage
        resources:
          limits:
            cpu: "1"
            memory: 2Gi
          requests:
            cpu: 250m
            memory: 1Gi
        livenessProbe:
          httpGet:
            port: 80
            path: /index.html
          initialDelaySeconds: 30              #容器启动后30秒进行检测
          periodSeconds: 3                     #检查周期间隔
          timeoutSeconds: 10                   #超时时间
        readinessProbe:
          httpGet:
            port: 80
            path: /index.html
          initialDelaySeconds: 1
          periodSeconds: 3
          timeoutSeconds: 10
      volumes:
      - name: storage
        persistentVolumeClaim:
          claimName: nginx
#      - name: nginx-nfs
#        nfs:
#          path: /data/docker/logs
#          server: 172.18.20.1

5.创建Service

[ root@localhost ~ ]# vim nginx.service.yaml

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  selector:
    app: nginx
  type: NodePort
  ports:
    - nodePort: 8080
      name: web
      port: 80
      targetPort: 80