KubeOps Kubernetes CheatSheet

This is Kubernetes Cheatsheet based on Kubernetes API 1.19 version.

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Creating Objects

Name	Command
Create resource	kubectl apply -f ./<file_name>.yaml
Create from multiple files	kubectl apply -f ./<file_name_1>.yaml -f ./<file_name_2>.yaml
Create all files in directory	kubectl apply -f ./<directory_name>
Create from url	kubectl apply -f https://<url>
Create pod	kubectl run <pod_name> --image <image_name>
Create pod, then expose it as service	kubectl run <pod_name> --image <image_name> --port <port> --expose
Create pod yaml file	kubectl run <pod_name> --image image_name --dry-run=client -o yaml > <file_name>.yaml
Create deployment	kubectl create deployment <deployment_name> --image <image_name>
Create deployment yaml file	kubectl create deployment <deployment_name> --image <image_name> --dry-run=client -o yaml > <file_name>.yaml
Create service	kubectl create service <service-type> <service_name> --tcp=<port:target_port>
Create service yaml file	kubectl create service <service-type> <service_name> --tcp=<port:target_port> --dry-run=client -o yaml > <file_name>.yaml
Expose service from pod/deployment	kubectl expose deployment <pod/deployment_name> --type=<service-type> --port <port> --target-port <target_port>
Create config map from key-value	kubectl create configmap <configmap_name> --from-literal=<key>:<value> --from-literal=<key>:<value>
Create config map from file	kubectl create configmap <configmap_name> --from-file=<file_name>
Create config map from env file	kubectl create configmap <configmap_name> --from-env-file=<file_name>
Create secret from key-value	kubectl create secret generic <secret_name> --from-literal=<key>:<value> --from-literal=<key>:<value>
Create secret from file	kubectl create secret generic <secret_name> --from-file=<file_name>
Create job	kubectl create job <job_name> --image=<image_name>
Create job from cronjob	kubectl create job <job_name> --from=cronjob/<cronjob-name>
Create cronjob	kubectl create cronjob --image=<image_name> --schedule='<cron-syntax>' -- <command> <args>
Create inline yaml	cat <<EOF | kubectl create -f - <enter> YAML CONTENT <enter> EOF <enter>

Monitoring Usage Commands

Name	Command
Get node cpu and memory utilization	kubectl top node <node_name>
Get pod cpu and memory utilization	kubectl top pods <pod_name>

Namespace Usage Commands

Name	Command
Get all namespaces	kubectl get namespaces
Get namespace	kubectl get namespaces <namespace_name>
Get namespace in yaml	kubectl get namespaces <namespace_name> -o yaml
Describe namespace	kubectl describe namespaces <namespace_name>
Execute command with specific namespace (Example)	kubectl get pods --namespace=<namespace_name>
Set default namespace for 'kubectl'	kubectl config set-context --current --namespace="<namespace_name>"
Check current namespace	kubectl config view --minify | grep namespace:
Cleanup namespace with specific namespace	kubectl delete all --all --namespace="<namespace_name>"
Cleanup namespace (Be careful, make sure you're right namespace)	kubectl delete all --all

Node Commands

Name	Command
Describe node	kubectl describe node <node_name>
Get node in yaml	kubectl get node <node_name> -o yaml
Get node	kubectl get node <node_name>
Drain node	kubectl drain node <node_name>
Cordon node	kubectl cordon node <node_name>
Uncordon node	kubectl uncordon node <node_name>

Pod Commands

Name	Command
Get pod	kubectl get pod <pod_name>
Get pod in yaml	kubectl get pod <pod_name> -o yaml
Get pod wide information	kubectl get pod <pod_name> -o wide
Get pod with watch	kubectl get pod <pod_name> -w
Edit pod	kubectl edit pod <pod_name>
Describe pod	kubectl describe pod <pod_name>
Delete pod	kubectl delete pod <pod_name>
Log pod	kubectl logs pod <pod_name>
Tail -f pod	kubectl logs pod -f <pod_name>
Execute into pod	kubectl exec -it pod <pod_name> -- /bin/bash
Running Temporary Image	kubectl run <pod_name> --image=curlimages/curl --rm -it --restart=Never -- curl <destination>

Deployment Commands

Name	Command
Get deployment	kubectl get deployment <deployment_name>
Get deployment in yaml	kubectl get deployment <deployment_name> -o yaml
Get deployment wide information	kubectl get deployment <deployment_name> -o wide
Edit deployment	kubectl edit deployment <deployment_name>
Describe deployment	kubectl describe deployment <deployment_name>
Delete deployment	kubectl delete deployment <deployment_name>
Log deployment	kubectl logs deployment/deployment_name -f
Update image	kubectl set image deployment <deployment_name> <container_name>=<new_image_name>
Scale deployment with replicas	kubectl scale deployment <deployment_name> --replicas <replicas>
Autoscaling deployment	kubectl autoscale deployment <deployment_name> --min=<min_number_of_pod> --max=<max_number_of_pod> --cpu-percent=<percent_of_requested_CPU>

Service Commands

Name	Command
Get service	kubectl get service <service>
Get service in yaml	kubectl get service <service> -o yaml
Get service wide information	kubectl get service <service> -o wide
Edit service	kubectl edit service <service>
Describe service	kubectl describe service <service>
Delete service	kubectl delete service <service>

Endpoints Commands

Name	Command
Get endpoints	kubectl get endpoints <endpoints_name>

Ingress Commands

Name	Command
Get ingress	kubectl get ingress
Get ingress in yaml	kubectl get ingress -o yaml
Get ingress wide information	kubectl get ingress -o wide
Edit ingress	kubectl edit ingress <ingress_name>
Describe ingress	kubectl describe ingress <ingress_name>
Delete ingress	kubectl delete ingress <ingress_name>

DaemonSet Commands

Name	Command
Get daemonset	kubectl get daemonset <daemonset_name>
Get daemonset in yaml	kubectl get daemonset <daemonset_name> -o yaml
Edit daemonset	kubectl edit daemonset <daemonset_name>
Describe daemonset	kubectl describe daemonset <daemonset_name>
Delete daemonset	kubectl delete deployment <daemonset_name>

StatefulSet Commands

Name	Command
Get statefulset	kubectl get statefulset <statefulset_name>
Get statefulset in yaml	kubectl get statefulset <statefulset_name> -o yaml
Edit statefulset	kubectl edit statefulset <statefulset_name>
Describe statefulset	kubectl describe statefulset <statefulset_name>
Delete statefuleset	kubectl delete statefulset <statefulset_name>

ConfigMaps Commands

Name	Command
Get configmap	kubectl get configmap <configmap_name>
Get configmap in yaml	kubectl get configmap <configmap_name> -o yaml
Edit configmap	kubectl edit configmap <configmap_name>
Describe configmap	kubectl describe configmap <configmap_name>
Delete configmap	kubectl delete configmap <configmap_name>

Secret Commands

Name	Command
Get secret	kubectl get secret <secret_name>
Get secret in yaml	kubectl get secret <secret_name> -o yaml
Edit secret	kubectl edit secret <secret_name>
Describe secret	kubectl describe secret <secret_name>
Delete secret	kubectl delete secret <secret_name>

Rollout Commands

Name	Command
Restart deployment	kubectl rollout restart deployment <deployment_name>
Undo deployment with the latest revision	kubectl rollout undo deployment <deployment_name>
Undo deployment with specified revision	kubectl rollout undo deployment <deployment_name> --to-revision <revision_number>
Get all revisions of deployment	kubectl rollout history deployment <deployment_name>
Get specified revision of deployment	kubectl rollout history deployment <deployment_name> --revision=<revision_number>

Job Commands

Name	Command
Get job	kubectl get job <job_name>
Get job in yaml	kubectl get job <job_name> -o yaml
Edit job in yaml	kubectl edit job <job_name>
Describe job	kubectl describe job <job_name>
Delete job	kubectl delete job <job_name>

Cronjob Commands

Name	Command
Get cronjob	kubectl get cronjob cronjob_name
Get cronjob in yaml	kubectl get cronjob <cronjob_name> -o yaml
Edit cronjob	kubectl edit cronjob <cronjob_name>
Describe cronjob	kubectl describe cronjob <cronjob_name>
Delete cronjob	kubectl delete cronjob <cronjob_name>

Network Policy Commands

Name	Command
Get networkpolicy	kubectl get networkpolicy <networkpolicy_name>
Get networkpolicy in yaml	kubectl get networkpolicy <networkpolicy_name> -o yaml
Get networkpolicy wide information	kubectl get networkpolicy <networkpolicy_name> -o wide
Edit networkpolicy	kubectl edit networkpolicy <networkpolicy_name>
Describe networkpolicy	kubectl describe networkpolicy <networkpolicy_name>
Delete networkpolicy	kubectl delete networkpolicy <networkpolicy_name>

Persistence Volume Commands

Name	Command
Get persistence volume	kubectl get pv <persistencevolume_name>
Get persistence volume in yaml	kubectl get pv <persistencevolume_name> -o yaml
Edit persistence volume	kubectl edit pv <persistencevolume_name>
Describe persistence volume	kubectl describe pv <persistencevolume_name>
Delete persistence volume	kubectl delete pv <persistencevolume_name>

Persistence Volume Claim Commands

Name	Command
Get persistence volume claim	kubectl get pvc <persistencevolume_claim_name>
Get persistence volume claim in yaml	kubectl get pvc <persistencevolume_claim_name> -o yaml
Edit persistence volume claim	kubectl edit pvc <persistencevolume_claim_name>
Describe persistence volume claim	kubectl describe pvc <persistencevolume_claim_name>
Delete persistence volume claim	kubectl delete pvc <persistencevolume_claim_name>

Labels and Selectors Commands

Name	Command
Show labels of node,pod and deployment	kubectl get <node/pod/deployment> --show-labels
Attach labels to <node/pod/deployment>	kubectl label <node/pod/deployment> <pod_name> <key>=<value>
Remove labels from <node/pod/deployment>	kubectl label <node/pod/deployment> <pod_name> <key>-
Select node,pod and deployment by using labels	kubectl get <node/pod/deployment> -l <key>=<value>
Delete all resources by using labels	kubectl delete all -l <key>=<value>

Role-Based Access Control (RBAC) Commands

Name	Command
List current user privilleges with default namespace	kubectl auth can-i --list
List specified user privilleges with default namespace	kubectl auth can-i --list --as <user/service_account>
List current user privilleges with specified namespace	kubectl auth can-i --list -n <namespace>
List specified user privilleges with specified namespace	kubectl auth can-i --list --as <user/service_account> -n <namespace>
Verify if current user is able to do something with resource	kubectl auth can-i <verb> <resource>
Verify if specified user is able to do something with resource	kubectl auth can-i <verb> <resource> --as <user/service_account>
Create service account	kubectl create serviceaccount <serviceaccount_name>
Create role and define resource privilleges	kubectl create role <role_name> --resource=<object> --verb=<verb>
Create cluster role and define cluster resource privilleges	kubectl create clusterrole <clusterrole_name> --resource=<object> --verb=<verb>
Create role binding with service account	kubectl create rolebinding <rolebinding_name> --role <role_name> --serviceaccount <serviceaccount_name>
Create cluster role binding with service account	kubectl create clusterrolebinding <clusterrolebinding_name> --clusterrole <clusterrole_name> --serviceaccount <serviceaccount_name>
Create role binding with user	kubectl create rolebinding <rolebinding_name> --role <role_name> --user <user_name>
Create cluster role binding with user	kubectl create clusterrolebinding <clusterrolebinding_name> --clusterrole <clusterrole_name> --user <user_name>

API Resource

Name	Command
Print the supported API resources on the Kubernetes API server	kubectl api-resources

References

Kubernetes Document: Link

Kubernetes Command: Link

Kubernetes API Reference: Link

Kubernetes CheatSheet Link