Kubernetes Cheatsheet

In the fast-paced world of Kubernetes, having a quick reference guide at your fingertips can be invaluable. Whether you’re a seasoned pro or just starting your Kubernetes journey, this cheatsheet has got you covered from creating objects to managing labels and selectors. Let’s dive in!

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1. Creating Objects

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 the 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 and Expose as Service

kubectl run <pod_name> –image <image_name> –port <port> –expose

Create Pod YAML File

kubectl run <pod_name> –image <image_name> –dryrun=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>

2. ConfigMaps Commands

Create config Map from key-value

kubectl create configmap <configmap_name> –fromliteral=<key>:<value> –from-literal=<key>:<value>

Create Config Map from File

kubectl create configmap <configmap_name> –fromfile=<file_name>

Create Config Map from Env File

kubectl create configmap <configmap_name> –from-envfile=<file_name>

3. Secret Commands

Create a Secret from the Key-Value

kubectl create secret generic <secret_name> –fromliteral=<key>:<value> –from-literal=<key>:<value>

Create a Secret from the File

kubectl create secret generic <secret_name> –fromfile=<file_name>

4. Monitoring Usage Commands

Get Node CPU and Memory Utilization

kubectl top node <node_name>

Get Pod CPU and Memory Utilization

kubectl top pods <pod_name>

5. Node Commands

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>

6. Pod Commands

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>

7. Deployment Commands

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>

8. Service Commands

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>

9. Endpoints Commands

Get Endpoints

kubectl get endpoints <endpoints_name>

10. Ingress Commands

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>

11. DaemonSet Commands

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 daemonset <daemonset_name>

12. StatefulSet Commands

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 StatefulSet

kubectl delete statefulset <statefulset_name>

13. ConfigMaps Commands

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>

14. Secret Commands

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>

15. Rollout Commands

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 the Deployment

kubectl rollout history deployment <deployment_name>

Get Specified Revision of Deployment

kubectl rollout history deployment <deployment_name> –revision=<revision_number>

16. Job Commands

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>

17. Cronjob Commands

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>

18. Network Policy Commands

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>

19. Labels and Selectors Commands

Show Labels of Node, Pod, and Deployment

kubectl get <node/pod/deployment> –show-labels

Attach Labels to Node, Pod, and Deployment

kubectl label <node/pod/deployment> <resource_name> <key>=<value>

Remove Labels from Node, Pod, and Deployment

kubectl label <node/pod/deployment> <resource_name> <key>-

Select Node, Pod, and Deployment by Using Labels

kubectl get <node/pod/deployment> -l <label_selector>

Stay tuned for more updates and advanced Kubernetes commands!

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