K8s基础yaml文件

一、基础Pod配置

nginx：

apiVersion: v1
kind: Pod
metadata:
  name: nginx-port
  namespace: default
  labels:
    app: myapp
    tier: frontend
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    ports:
    - name: http
      containerPort: 80
    - name: https
      containerPort: 443
  - name: busybox
    image: busybox:latest
    imagePullPolicy: IfNotPresent
    command:
    - "/bin/sh"
    - "-c"
    - "sleep 3600"
  nodeSelector:
    disktype: ssd

---

存活性探针配置：
exec

apiVersion: v1
kind: Pod
metadata:
  name: liveness-exec-pod
  namespace: default
spec:
  containers:
  - name: liveness-exec-cpntainer
    image: busybox:latest
    imagePullPolicy: IfNotPresent
    command: ["/bin/sh","-c","touch /tmp/healthy sleep 60; rm -f /tmp/healthy; sleep 3600"]
    livenessProbe:
      exec:
        command: ["test","-e","/tmp/healthy"]
      initialDelaySeconds: 1

HttpGet

apiVersion: v1
kind: Pod
metadata:
  name: liveness-httpget
  namespace: default
spec:
  containers:
  - name: liveness-exec-cpntainer
    image: ikubernetes/myapp:v1
    imagePullPolicy: IfNotPresent
    ports:
    - name: http
      containerPort: 80
    livenessProbe:
      httpGet:
        port: http
        path: /index.html
      initialDelaySeconds: 1

---

就绪性探针：
HttpGet

apiVersion: v1
kind: Pod
metadata:
  name: readiness-httpget
  namespace: default
spec:
  containers:
  - name: readiness-exec-cpntainer
    image: ikubernetes/myapp:v1
    imagePullPolicy: IfNotPresent
    ports:
    - name: http
      containerPort: 80
    readinessProbe:
      httpGet:
        port: http
        path: /index.html
      initialDelaySeconds: 1
      periodSeconds: 3

---

二、调度器基础配置

ReplicaSet

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: myapp
  namespace: default
spec:
  replicas: 2
  selector:
    matchLabels:
      app: myapp
      release: canary
  template:
    metadata:
      name: myapp-pod
      labels:
        app: myapp
        release: canary
        environment: qa
    spec:
      containers:
      - name: myapp-container
        image: ikubernetes/myapp:v1
        ports:
        - name: http
          containerPort: 80

---

Deployment

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-php
spec:
  selector:
    matchLabels:
      app: nginx-php
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx-php
    spec:
      containers:
      - name: php
        image: harbor.huhuhahei.cn/huhuhahei/lnmp_php:v1
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 9000
        volumeMounts:
        - name: nginx-data
          mountPath: /usr/local/nginx/html
      - name: nginx
        image: harbor.huhuhahei.cn/huhuhahei/lnmp_nginx:v2
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80
        volumeMounts:
        - name: nginx-data
          mountPath: /usr/local/nginx/html
        - name: ngin-conf
          mountPath: /usr/local/nginx/conf/conf.d/
        - name: nginx-logs
          mountPath: /var/log/nginx
      volumes:
      - name: nginx-data
        persistentVolumeClaim:
          claimName: blog-nginx
      - name: nginx-logs
        persistentVolumeClaim:
          claimName: blog-logs
      - name: ngin-conf
        configMap:
         name: ngin-conf
         items:
         - key: nginx.conf
           path: add.conf

DaemonSet

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
      role: logstor
  template:
    metadata:
      labels:
        app: redis
        role: logstor
    spec:
      containers:
      - name: redis
        image: redis:4.0-alpine
        ports:
        - name: redis
          containerPort: 6379
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: filebeat-ds
  namespace: default
spec:
  selector:
    matchLabels:
      app: filebeat
      release: stable
  template:
    metadata:
      labels:
        app: filebeat
        release: stable
    spec:
      containers:
      - name: filebeat
        image: ikubernetes/filebeat:5.6.5-alpine
        env:
        - name: REDIS_HOST
          value: redis.default.svc.cluster.local
        - name: REDIS_LOG_LEVEL
          value: info

statefulset

apiVersion: v1
kind: Service
metadata:
  name: myapp-statefulset
  labels:
    app: myapp
spec:
  ports:
  - name: web
    port: 80
  clusterIP: None
  selector:
    app: myapp-pod
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: myapp
spec:
  serviceName: myapp
  replicas: 3
  selector:
    matchLabels:
      app: myapp-pod
  template:
    metadata:
      labels:
        app: myapp-pod
    spec:
      containers:
      - name: myapp
        image: ikubernetes/myapp:v1
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: myappdata
          mountPath: /usr/share/nginx/html
  volumeClaimTemplates:
  - metadata:
      name: myappdata
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 5Gi

三、Service配置

NodePort

apiVersion: v1
kind: Service
metadata:
  name: myapp
  namespace: default
spec:
  selector:
    app: myapp
    release: canary
  clusterIP: 10.99.99.99
  type: NodePort
  ports:
  - port: 80
    targetPort: 80
    nodePort: 30080

ClusterIP

apiVersion: v1
kind: Service
metadata:
  name: redis
  namespace: default
spec:
  selector:
    app: redis
    role: logstor
  clusterIP: 10.97.97.97
  type: ClusterIP
  ports:
  - port: 6379
    targetPort: 6379

四、持久卷配置

emptyDir

apiVersion: v1
kind: Pod
metadata:
  name: nginx-port
  namespace: default
  labels:
    app: myapp
    tier: frontend
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    ports:
    - name: http
      containerPort: 80
    - name: https
      containerPort: 443
    volumeMounts:
    - name: html
      mountPath: /usr/share/nginx/html/
  - name: busybox
    image: busybox:latest
    imagePullPolicy: IfNotPresent
    volumeMounts:
    - name: html
      mountPath: /data/
    command:
    - "/bin/sh"
    - "-c"
    - "while true; do echo $(date) >> /data/index.html; sleep 2;done"
  nodeSelector:
    disktype: ssd
  volumes:
  - name: html
    emptyDir: {}

hostpath

apiVersion: v1
kind: Pod
metadata:
  name: pod-vol-hostpath
  namespace: default
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    volumeMounts:
    - name: html
      mountPath: /usr/share/nginx/html/
  volumes:
  - name: html
    hostPath:
      path: /data/pod/volume1
      type: DirectoryOrCreate

nfs

apiVersion: v1
kind: Pod
metadata:
  name: pod-vol-nfs
  namespace: default
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    volumeMounts:
    - name: html
      mountPath: /usr/share/nginx/html/
  volumes:
  - name: html
    nfs:
      path: /data/test
      server: 10.7.48.223

PV

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv001
  labels:
    name: pv0001
spec:
  nfs:
    path: /data/v1
    server: 10.7.48.223
  accessModes: ["ReadWriteMany","ReadWriteOnce"]
  capacity:
    storage: 5Gi
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv002
  labels:
    name: pv0002
spec:
  nfs:
    path: /data/v2
    server: 10.7.48.223
  accessModes: ["ReadWriteMany"]
  capacity:
    storage: 5Gi
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv003
  labels:
    name: pv0003
spec:
  nfs:
    path: /data/v3
    server: 10.7.48.223
  accessModes: ["ReadWriteMany","ReadWriteOnce"]
  capacity:
    storage: 5Gi
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv004
  labels:
    name: pv0004
spec:
  nfs:
    path: /data/v4
    server: 10.7.48.223
  accessModes: ["ReadWriteMany","ReadWriteOnce"]
  capacity:
    storage: 5Gi
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv005
  labels:
    name: pv0005
spec:
  nfs:
    path: /data/v5
    server: 10.7.48.223
  accessModes: ["ReadWriteMany","ReadWriteOnce"]
  capacity:
    storage: 5Gi
---

pvc

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mypvc
  namespace: default
spec:
  accessModes: ["ReadWriteMany"]
  resources:
    requests:
      storage: 6Gi
---
apiVersion: v1
kind: Pod
metadata:
  name: pod-vol-pvc-nfs
  namespace: default
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    volumeMounts:
    - name: html
      mountPath: /usr/share/nginx/html/
  volumes:
  - name: html
    persistentVolumeClaim:
      claimName: mypvc

五、配置中心（configmap）

通过环境变量注入配置

apiVersion: v1
kind: Pod
metadata:
  name: pod-cm-1
  namespace: default
  labels:
    app: myapp
    tier: frontend
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    ports:
    - name: http
      containerPort: 80
    env:
    - name: NGINX_SERVER_PORT
      valueFrom:
        configMapKeyRef:
          name: nginx-config
          key: nginx_port
    - name: NGINX_SERVER_NAME
      valueFrom:
        configMapKeyRef:
          name: nginx-config
          key: server_name

通过配置文件注入

apiVersion: v1
kind: Pod
metadata:
  name: pod-cm-2
  namespace: default
  labels:
    app: myapp
    tier: frontend
spec:
  containers:
  - name: myapp
    image: ikubernetes/myapp:v1
    ports:
    - name: http
      containerPort: 80
    volumeMounts:
    - name: nginxconf
      mountPath: /etc/nginx/config.d/
      readOnly: true
  volumes:
  - name: nginxconf
    configMap:
      name: nginx-config