Skip to content

Latest commit

 

History

History
84 lines (71 loc) · 1.89 KB

pods.md

File metadata and controls

84 lines (71 loc) · 1.89 KB
Raw

Kubernetes Pods

Pods are the smallest deployable units in Kubernetes and run inside nodes.

Key Features of Pods

  • A node can have multiple Pods.
  • To deploy more Pods, new nodes can be created.
  • Pods have a one-to-one relationship with containers, but they are not restricted to a single container.
    • Additional helper containers can be included for tasks like managing user data.
  • Pods within the same node can share:
    • Storage
    • Information
  • Pods in the same node are part of the same network namespace, allowing them to communicate easily.

Kubernetes Pod Management Commands

1. View Pods

  • List all Pods in the default namespace: 
    kubectl get pods
  • List Pods in a specific namespace: 
    kubectl get pods -n <namespace>
  • View detailed information about a Pod: 
    kubectl describe pod <pod-name>

2. Create a Pod

  • Create a Pod using a YAML file: 
    kubectl apply -f pod-definition.yml

3. Delete a Pod

  • Delete a specific Pod: 
    kubectl delete pod <pod-name>
  • Delete all Pods in a namespace: 
    kubectl delete pods --all -n <namespace>

4. Check Logs

  • View logs for a Pod: 
    kubectl logs <pod-name>
  • View logs for a specific container in a Pod: 
    kubectl logs <pod-name> -c <container-name>

5. Execute Commands in a Pod

  • Access the shell of a Pod’s container: 
    kubectl exec -it <pod-name> -- /bin/bash
  • Run a command inside a Pod: 
    kubectl exec <pod-name> -- <command>

6. Debugging Pods

  • Check events related to a Pod: 
    kubectl describe pod <pod-name>
  • Check the Pod status: 
    kubectl get pods <pod-name> -o wide

7. Monitor Pods

  • Watch changes in Pod states: 
    kubectl get pods -w