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Kubectl Cheat Sheet by

Kubernetes kubectl reference
kubectl     kubernetes

Viewing / Accessing resources

kubectl get --all-­nam­espaces {resou­rce­_type}
Get resource from all namespaces
kubectl describe {resou­rce­_type}
Describes the given resources
kubectl rollin­g-u­pdate {pod_n­ame}
Performs a rolling update for a given pod
kubectl scale --repl­icas=3 {resou­rce­_ty­pe}­/{r­eso­urc­e_n­ame}
Scale given resource
kubectl proxy
Proxy the api server API to your local machine on port 8001
kubectl port-f­orward {pod_name} {local­_po­rt}­:{r­emo­te_­port}
Forward the pod port to your local port

Creating /editing objects

kubectl apply -f ./my-m­ani­fes­t.yaml
Apply a config­uration to a resource by filename or stdin. Also overrides the existing config­ura­tion.
kubectl create -f ./my-m­ani­fes­t.yaml
Create resour­ce(s)
kubectl create -f ./dir
Create resour­ce(s) in all manifest files in dir
Create from url
kubectl run nginx --imag­e=nginx
Start a single instance of nginx
kubectl replace --force -f ./pod.j­son
Force replace, delete and then re-create the resource. Will cause a service outage.
kubectl edit svc/do­cke­r-r­egi­stry
Edit the service named docker­-re­gistry

Resource types

ConfigMaps allow you to decouple config­uration artifacts from image content to keep contai­nerized applic­ations portable.
A DaemonSet ensures that all (or some) Nodes run a copy of a Pod.
A Deployment controller provides declar­ative updates for Pods and Replic­aSets.
An Ingress is a collection of rules that allow inbound connec­tions to reach the cluster services.
A job creates one or more pods and ensures that a specified number of them succes­sfully terminate.
Kubernetes supports multiple virtual clusters backed by the same physical cluster. These virtual clusters are called namesp­aces.
Nodes are the physical cluster nodes.
A Persis­ten­tVo­lum­eClaim (PVC) is a request for storage by a user.
A Persis­ten­tVolume (PV) is a piece of storage in the cluster that has been provis­ioned by an admini­str­ator.
A Pod is the basic building block of Kubern­ete­s–the smallest and simplest unit in the Kubernetes object model that you create or deploy.
A ReplicaSet ensures that a specified number of pod replicas are running at any one time.
A Cron Job manages time based Jobs.
Objects of type secret are intended to hold sensitive inform­ation.
A Kubernetes Service is an abstra­ction which defines a logical set of Pods and a policy by which to access them.

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