Difference between revisions of "Kubectl port-forward"

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(Created page with "{{Draft}} * <code>kubectl --namespace default port-forward $POD_NAME 3000</code> == See also == * {{kubectl}} Category:Kubernetes")
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<code>[[kubectl]] [[port-forward]]</code> [[forward]] one or more local ports to a [[pod]].
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* Man: https://www.mankier.com/1/kubectl-port-forward
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* <code>[[kubectl port-forward --help]]</code>
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* <code>[[kubectl]] [[port-forward]] [[deployment/]]mydeployment 8080:443</code>
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* <code>[[kubectl]] [[port-forward]] [[deployment/]]mydeployment 8080:443 &</code>
  
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== Examples ==
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* [[Grafana]]: <code>kubectl --namespace default port-forward [[$POD_NAME]] [[3000]]</code>
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* [[Prometheus]]:
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** <code>kubectl --namespace default port-forward $POD_NAME [[9090]]</code>
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** <code>[[kubectl port-forward]] --namespace default [[svc/]][[prometheus-kube-prometheus-prometheus]] [[9090]]:9090</code>
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** [[Alertmanager]]: <code>kubectl port-forward --namespace default svc/prometheus-kube-prometheus-alertmanager 9093:9093</code>
  
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* <code>kubectl --namespace default port-forward $POD_NAME 3000</code>
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<code>[[kubectl port-forward svc/argocd-server -n argocd 8080:443]]</code>
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[[Forwarding from]] 127.0.0.1:8080 -> 8080
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[[export]] POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=grafana" -o jsonpath="{.items[0].metadata.name}")
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kubectl --namespace default port-forward $POD_NAME 3000
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Forwarding from 127.0.0.1:3000 -> 3000
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Forwarding from [::1]:3000 -> 3000
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kubectl -n default port-forward $POD_NAME 8443:[[8443]]
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Forwarding from 127.0.0.1:8443 -> 8443
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Forwarding from [::1]:8443 -> 8443
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kubectl -n your-namespace port-forward [[service]]/[[pritunl-ui]] 7111:443
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List of ports, do not included <code>[[port-forward]]</code> ports:
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[[kubectl get svc --all-namespaces -o json]] | jq '.items[] | {name:.metadata.name, p:.spec.ports[] } | select( .p.nodePort != null ) | "\(.name): localhost:\(.p.nodePort) -> \(.p.port) -> \(.p.targetPort)"'
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== Examples with errors ==
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kubectl --namespace default port-forward $[[POD_NAME]] 3000
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error: unable to forward port because [[pod is not running]]. Current status=Failed
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kubectl --namespace default port-forward $POD_NAME 3000
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[[error: unable to forward port because pod is not running. Current status=Pending]]
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kubectl --namespace default port-forward $POD_NAME 3000
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error: You must be logged in to the server ([[Unauthorized]])
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kubectl --namespace default port-forward $POD_NAME 3000
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error: TYPE/NAME and list of ports are required for port-forward
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See '[[kubectl port-forward -h]]' for help and examples
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kubectl port-forward service/my-argo-argocd-server -n default 8080:443
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[[error: timed out waiting for the condition]]
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[[bind: address alredy in use]] [[unable to create listener]]
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Solution: <code>[[lsof -i]]</code>
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== Related ==
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* <code>[[kubectl get pods]]</code>
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* [[Port forwarding]]
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* <code>[[kubectl proxy]]</code>
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* [[Kubernetes networking]]
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* <code>[[kubectl get services]]</code>
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* <code>[[kubectl create service clusterip]]</code>
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* <code>[[minikube tunnel]]</code>
  
 
== See also ==
 
== See also ==
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* {{kubectl}}
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* {{kubectl port-forward}}
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* {{Kubernetes networking}}
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* {{Kubernetes services}}
  
 
[[Category:Kubernetes]]
 
[[Category:Kubernetes]]

Latest revision as of 07:39, 9 July 2024

kubectl port-forward forward one or more local ports to a pod.

Examples[edit]

kubectl port-forward svc/argocd-server -n argocd 8080:443
Forwarding from 127.0.0.1:8080 -> 8080

export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=grafana" -o jsonpath="{.items[0].metadata.name}")

kubectl --namespace default port-forward $POD_NAME 3000
Forwarding from 127.0.0.1:3000 -> 3000
Forwarding from [::1]:3000 -> 3000

kubectl -n default port-forward $POD_NAME 8443:8443
Forwarding from 127.0.0.1:8443 -> 8443
Forwarding from [::1]:8443 -> 8443

kubectl -n your-namespace port-forward service/pritunl-ui 7111:443


List of ports, do not included port-forward ports: 

kubectl get svc --all-namespaces -o json | jq '.items[] | {name:.metadata.name, p:.spec.ports[] } | select( .p.nodePort != null ) | "\(.name): localhost:\(.p.nodePort) -> \(.p.port) -> \(.p.targetPort)"'

Examples with errors[edit]

kubectl --namespace default port-forward $POD_NAME 3000
error: unable to forward port because pod is not running. Current status=Failed

kubectl --namespace default port-forward $POD_NAME 3000
error: unable to forward port because pod is not running. Current status=Pending

kubectl --namespace default port-forward $POD_NAME 3000
error: You must be logged in to the server (Unauthorized)

kubectl --namespace default port-forward $POD_NAME 3000
error: TYPE/NAME and list of ports are required for port-forward
See 'kubectl port-forward -h' for help and examples

kubectl port-forward service/my-argo-argocd-server -n default 8080:443
error: timed out waiting for the condition



bind: address alredy in use unable to create listener

Solution: lsof -i

Related[edit]

See also[edit]

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