Kubernetes Pods - Commands

Creating a Pod

Create pod.yml with following content

Get the file (pod.yml)

apiVersion: v1
kind: Pod
metadata:
  name: first-app
  labels:
    app: nodeapp
spec:
  containers:
    - name: nodeapp
      image: kammana/nodeapp:v1
      ports:
        - containerPort: 8080

$ kubectl create -f https://raw.githubusercontent.com/javahometech/kubernetes/master/pods/pods.yml

Command to get all pods

$ kubectl get pods

Command to describe pod details

Syntax - kubectl describe pods/POD_NAME

$ kubectl describe pods/nodeapp

Executing commands on pods

Syntax - kubectl exec POD_NAME CMD_TO_EXECUTE

$ kubectl exec nodeapp printenv

Getting into pods Terminal

Syntax - kubectl exec -it POD_NAME bash

$ kubectl exec -it nodeapp bash

Get logs from pods

Syntax - kubectl logs POD_NAME

$ kubectl logs nodeapp

Exposing Pods to Internet

By default Pods run in a isolated environment i.e. they are reachable within kubernetes cluster, if you wanna reach your pod outside cluster, You have to expose it

$ kubectl expose pods/nodeapp --type="NodePort" --port 8080