What is kubernetes pods with example commands

• Kubernetes run PODS
• Atomic Unit of Work Scheduling is POD in kubernetes
• Pod get instansciated from Kubelet
• Pod contains one or more container e.g docker
• Pod get assignment of IP from kube proxy
• Worker may have one or multiple pods
• Pods is Scheduled to kubelet by Schedular
• Pods are EMPHERAL. Same POD can not be run. Similar pods you may get
• PODS is running state as long as “All Container” is running/succeded.
• Pods has state from PEDNING -> RUNNING -> succeded/failed -> Terminated
• Pod name must be unique in Namespace

Example of PODS?

apiVersion: v1
kind: Pod
metadata:
  name: nodehelloworld.example.com
  labels:
    app: helloworld
spec:
  containers:
  - name: devopsschool1
    image: scmgalaxy/nginx-devopsschoolv1
    ports:
    - name: nginx-port
      containerPort: 80

Working with Kubernetes pods?

   54  vi pod.yaml
   55  ls
   56  kubectl get ns
   57  kubectl create ns rajesh
   58  clear
   59  ls
   60  kubectl get ns
   61  clear
   62  kubectl get pods
   63  kubectl get pods -n=rajesh
   64  kubectl get pods -n=dev
   65  clear
   66  ls
   67  kubectl create -f pod.yaml
   68  kubectl get pods
   69  clear
   70  kubectl get pods
   71  kubectl create -f pod.yaml
   72  kubectl create -f pod.yaml -n=rajesh
   73  kubectl get pods -n=rajesh
   74  kubectl get pods
   75  kubectl get pods -n=rajesh,dev
   76  kubectl get pods --all-namespaces
   77  clear
   78  kubectl get pods -o wide
   79  ping 10.44.0.1
   80  clear
   81  ls
   82  clear
   83  kubectl get pods
   84  kubectl edit pod nodehelloworld.example.com
   85  kubectl get pods --show-labels
   86  kubectl -h
   87  kubectl get -h
   88  clear
   89  kubectl get pods -h
   90  clear
   91  ls
   92  vi pod.yaml
   93  kubectl apply -f pod.yaml
   94  kubectl get pods --show-labels
   95  clear
   96  ls
   97  kubectl get pods
   98  kubectl delete pod nodehelloworld.example.com
   99  kubectl delete pod nodehelloworld.example.com -n=rajesh
  100  kubectl get pods --all-namespaces
  101  history

Working with Kubernetes Pods

Kubernetes Pod Example Programs

Kubernetes POD observability and Deep Dive

Kubernetes Resource requests and limits of Pod and Container

Working with Kubernetes Cluster using Kubectl Part – 10 – Pods Life Cycle

Working with Kubernetes Cluster using Kubectl Part – 9 – Multi Containers Pods

Working with Kubernetes Pods & Deployment

How to check Containers readiness inside a pod using readinessProbe?

How to check Containers health inside a kubernetes pod using livenessProbe?

Understanding Node Selector and Node Affinity in Kubernetes