Kubernetes daily use commands

 Here is a quick view on k8 commands which are ideally useful for daily interaction work

• kubectl config get-contexts
• display list of contexts
• kubectx <env-name>
• to switch the env
• kubectl get nodes
• Get all nodes
• kubectl get namespaces
• Get all namespaces for a environment
• kubectl -n services get pod <pod-name>
• Get specific pod details
• kubectl -n services get pods
• Get all pods
• kubectl -n services delete pod <pod-name>
• Delete specific pod name
• -o wide
• To get data in more details like which node etc
• -o yaml
• To open specific file to see the details
• kubectl -n services describe pod <pod-name>
• To see description of the pod
• kubectl -n services exec -it  <pod-name> /bin/bash
• Logging into the pod to see details at code level
• kubectl -n services get hpa <hpd-pod-name>
• To check hpa details if hpa enabled
• kubectl -n services scale deploy <pod-name> --replicas=3
• To manual scale
• kubectl -n services get pods -o wide | grep ½
• Get all pods which are in unhealthy state
• kubectl -n services get deployment <pod-name> -o yaml
• To check min/max replicas or any other data point w.r.t deployment
• kubectl -n services get deployment <pod-name> -o yaml
• To edit min/max replicas or any resources
• kubectl -n services rollout restart deployment <po-name>
• To restart a service
• kubectl -n services logs <pod-name> -c install -f
• This could be used if our pod is in Init stage. Gives us the keys that are missing from config(Search for nil after running this command)
• kubectl -n configuration get pods
• Consul and Vault status
• stern -n configuration <name>
• Check logs of vault
• stern -n services <pod-name> -c <app-name> -t --since 1m
• Prints logs of all the pods of last 1 min
• stern -n services geolayers-api-primary -c geolayers-api -t --since 1m | grep '<text>' 
• Prints log only for the text that is in grep
• kubectl describe canary <pod-name> -n services
• To check canary deployment of specific pod
• kubectl get canary -n services
• To check all pods for which canary enabled

Kubectl commands complete cheatsheet : https://kubernetes.io/docs/reference/kubectl/cheatsheet/

Happy Learning !! :)