gistfile1.txt

21.1.1:

apiVersion: v1
kind: Pod
metadata:
  name: demo
spec:
  containers:
  - name: nginx
    image: nginx:1.7.9

21.1.6:

apiVersion: v1
kind: Pod
metadata:
  name: demo
spec:
  containers:
  - name: nginx
    image: nginx:1.7.9
  - name: sidecar
    image: centos:7
    command: ["ping"]
    args: ["8.8.8.8"]
    
21.2.1:

apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: rs-demo
spec:
  replicas: 3
  selector:
    matchLabels:
      component: reverse-proxy
  template:
    metadata:
      labels:
        component: reverse-proxy
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        
21.3.1:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
    
22.1.4:

apiVersion: v1
kind: Pod
metadata:
  name: dbdemo
  namespace: default
spec:
  containers:
  - name: pg
    image: postgres:9.6
    env:
      - name: POSTGRES_USER
        valueFrom:
          configMapKeyRef:
            name: dbconfig
            key: user
      - name: POSTGRES_DB
        valueFrom:
          configMapKeyRef:
            name: dbconfig
            key: db
      - name: POSTGRES_PASSWORD
        value: 'password'
        
22.1.10:

apiVersion: v1
kind: Pod
metadata:
  name: dbdemo
  namespace: default
spec:
  containers:
  - name: pg
    image: postgres:9.6
    volumeMounts:
    - name: dbinit-vol
      mountPath: /docker-entrypoint-initdb.d
    env:
      - name: POSTGRES_USER
        valueFrom:
          configMapKeyRef:
            name: dbconfig
            key: user
      - name: POSTGRES_DB
        valueFrom:
          configMapKeyRef:
            name: dbconfig
            key: db
      - name: POSTGRES_PASSWORD
        value: 'password'
  volumes:
    - name: dbinit-vol
      configMap:
        name: dbinit
        
22.2.1:

apiVersion: v1
kind: Secret
metadata:
  name: postgres-pwd
  namespace: default
type: Opaque
stringData:
  password: "mypassword"
  
22.2.2:


apiVersion: v1
kind: Pod
metadata:
  name: dbdemo
  namespace: default
spec:
  containers:
  - name: pg
    image: postgres:9.6
    volumeMounts:
    - name: dbinit-vol
      mountPath: /docker-entrypoint-initdb.d
    env:
      - name: POSTGRES_USER
        valueFrom:
          configMapKeyRef:
            name: dbconfig
            key: user
      - name: POSTGRES_DB
        valueFrom:
          configMapKeyRef:
            name: dbconfig
            key: db
      - name: POSTGRES_PASSWORD
        valueFrom:
          secretKeyRef:
            name: postgres-pwd
            key: password
  volumes:
    - name: dbinit-vol
      configMap:
        name: dbinit