teach_0809/Kubernetes_0809 at main · devopstrainer1/teach_0809 · GitHub

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## Deployment Replica set
apiVersion: apps/v1
kind: Deployment
metadata:
 name: abc123
 labels:
  app: nginx
spec:
 replicas: 3
 selector:
  matchLabels:
   app: nginx
 template:
  metadata:
   labels:
    app: nginx
  spec:
   containers:
    - name: amit
      image: nginx
      ports:
       - containerPort: 80

#### service ( clusterip)

apiVersion: v1
kind: Service
metadata:
 name: amit-cluster
spec:
 selector:
  app: nginx
 ports:
  - protocol: TCP
    port: 80
    targetPort: 80
 type: ClusterIP

#### service ( nodeport)

apiVersion: v1
kind: Service
metadata:
 name: amit-nodeport
spec:
 selector:
  app: nginx
 ports:
  - protocol: TCP
    port: 80
    targetPort: 80
 type: NodePort

### service ( loadbalancer)

apiVersion: v1
kind: Service
metadata:
 name: amit-nodeport
spec:
 selector:
  app: nginx
 ports:
  - protocol: TCP
    port: 80
    targetPort: 80
 type: LoadBalancer

### random pod

apiVersion: v1
kind: Pod
metadata:
 name: random
spec:
 containers:
  - name: jabez
    image: alpine
    command: ["/bin/sh", "-c"]
    args: ["shuf -i 0-100 -n 1 >> /opt/num.out ; sleep 200;"]

### volume mapping

apiVersion: v1
kind: Pod
metadata:
 name: random
spec:
 containers:
  - name: jabez
    image: alpine
    command: ["/bin/sh", "-c"]
    args: ["shuf -i 0-100 -n 1 >> /opt/num.out ; sleep 200;"]
    volumeMounts:
     - name: external-vol
       mountPath: /opt
 volumes:
  - name: external-vol
    hostPath:
     path: /tmp
     type: Directory

#### secret management

apiVersion: v1
kind: Pod
metadata:
 name: database
spec:
 containers:
  - name: yogesh
    image: mysql
    env:
     - name: MYSQL_ROOT_PASSWORD
       valueFrom:
        secretKeyRef:
         name: esther
         key: password