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Monday, 6 April 2020

Thank you kubie exactly what I needed

On average I deal with at least 5 different Kubernetes clusters so today when I saw / heard of kubie I had to install it.

kubie is an alternative to kubectx, kubens and the k on prompt modification script. It offers context switching, namespace switching and prompt modification in a way that makes each shell independent from others

Installing kubie right now involved download the release from the link below. Homebrew support is pending

https://github.com/sbstp/kubie/releases

Once added to your path it's as simple as this

1. Check kubie is in your path

$ which kubie
/usr/local/bin/kubie

2. Run "kubie ctx" as follows and select the "apples" k8s context

papicella@papicella:~/pivotal/PCF/APJ/PEZ-HaaS/haas-236$ kubie ctx



[apples|default] papicella@papicella:~/pivotal/PCF/APJ/PEZ-HaaS/haas-236$

3. Switch to a new namespace as shown below and watch how the PS1 prompt changes to indicate the k8s conext and new namespace we have set as result of the command below

$ kubectl config set-context --current --namespace=vmware-system-tmc
Context "apples" modified.

[apples|vmware-system-tmc] papicella@papicella:~/pivotal/PCF/APJ/PEZ-HaaS/haas-236$

4. Finally kubie exec is a subcommand that allows you to run commands inside of a context, a bit like kubectl exec allows you to run a command inside a pod. Here is some examples below
  
[apples|vmware-system-tmc] papicella@papicella:~/pivotal/PCF/APJ/PEZ-HaaS/haas-236$ kubie exec apples vmware-system-tmc kubectl get pods
NAME                                        READY   STATUS    RESTARTS   AGE
agent-updater-75f88b44f6-9f9jj              1/1     Running   0          2d23h
agentupdater-workload-1586145240-kmwln      1/1     Running   0          3s
cluster-health-extension-76d9b549b5-dlhms   1/1     Running   0          2d23h
data-protection-59c88488bd-9wxk2            1/1     Running   0          2d23h
extension-manager-8d69d95fd-sgksw           1/1     Running   0          2d23h
extension-updater-77fdc4574d-fkcwb          1/1     Running   0          2d23h
inspection-extension-64857d4d95-nl76f       1/1     Running   0          2d23h
intent-agent-6794bb7995-jmcxg               1/1     Running   0          2d23h
policy-sync-extension-7c968c9dcd-x4jvl      1/1     Running   0          2d23h
policy-webhook-779c6f6c6-ppbn6              1/1     Running   0          2d23h
policy-webhook-779c6f6c6-r82h4              1/1     Running   1          2d23h
sync-agent-d67f95889-qbxtb                  1/1     Running   6          2d23h
[apples|vmware-system-tmc] papicella@papicella:~/pivotal/PCF/APJ/PEZ-HaaS/haas-236$ kubie exec apples default kubectl get pods
NAME                                     READY   STATUS      RESTARTS   AGE
pbs-demo-image-build-1-mnh6v-build-pod   0/1     Completed   0          2d23h
[apples|vmware-system-tmc] papicella@papicella:~/pivotal/PCF/APJ/PEZ-HaaS/haas-236$

More Information

Blog Page:
https://blog.sbstp.ca/introducing-kubie/

GitHub Page:
https://github.com/sbstp/kubie

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