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Kubernetes Command Reference
This guide provides a concise reference for common kubectl commands used to manage Kubernetes clusters. Whether you’re managing nodes, namespaces, pods, deployments, or autoscaling, the examples below will help you perform everyday tasks with confidence.
General Commands
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List API Resources
Display all available API resources along with their short names:kubectl api-resources
API Resources & Documentation
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Get Detailed Documentation for an API Resource
kubectl explain <api-resource-name>Example:
kubectl explain podkubectl explain pod.metadata
Applying YAML Files
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Apply a Configuration from a YAML File
Apply a YAML configuration to a specific namespace:
kubectl apply -f <yaml-file> -n <namespace-name>
Viewing Cluster Resources
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Display All Resources in a Namespace
kubectl get all -n <namespace-name> -
Display ReplicaSets, Pods, and Deployments in a Specific Namespace
kubectl get rs,pods,deployments -n <namespace-name>
ReplicaSet & Deployment Management
Scaling and Rollouts
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Scale a ReplicaSet
kubectl scale rs <replicaset-name> --replicas=<count> -n <namespace-name> -
View Rollout History of a Deployment
kubectl rollout history deployment <deployment-name> -n <namespace-name> -
View Details of a Specific Revision
kubectl rollout history deployment <deployment-name> -n <namespace-name> --revision=<number> -
Roll Back a Deployment to a Specific Revision
kubectl rollout undo deployment <deployment-name> -n <namespace-name> --to-revision=<number>
Autoscaling
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Autoscale a Deployment
Automatically scale a deployment based on CPU utilization:kubectl autoscale deployment <deployment-name> -n <namespace-name> --cpu-percent=<target-cpu-percentage> --min=<min-pods> --max=<max-pods> -
View Horizontal Pod Autoscalers (HPA)
kubectl get hpa -n <namespace-name>
Additional Information
- Static Manifest Files
Any YAML files placed in/etc/kubernetes/manifests/are automatically loaded when the kubelet starts (for example, after a server reboot).