kubectl-plugins

A collection of plugins for kubectl integration (for Kubectl versions >= 1.12.0)

A portion of these plugins are available on krew as well.

Note

• These plugins are for kubectl versions at or above 1.12.0 only. Check your version via kubectl version
• For versions below 1.12.0, use the 1.11.0 branch.
• To upgrade your kubectl version via homebrew: brew upgrade kubectl, or via gcloud: gcloud components update
• The kubectl-ip plugin requires jq ( brew/apt/yum install jq )
• All coding was written to maintain compatibility across both BSD and GNU.
• Requires Bash.

Install on Linux/Mac

git clone https://github.com/jordanwilson230/kubectl-plugins.git
cd kubectl-plugins
./install-plugins.sh
source ~/.bash_profile

To Uninstall

rm -rf ~/.kube/plugins/jordanwilson230
ex '+g/jordanwilson230/d' -cwq ~/.bash_profile

Remove the image plugin:

ex '+g/IMG_REGISTRY=/d' -cwq ~/.bash_profile

Remove the prompt plugin:

ex '+g/function kubectl()/d' -cwq ~/.bash_profile
ex '+g/KUBECTL_\(.*\)_PROMPT/d' -cwq ~/.bash_profile

kubectl ssh

• Like kubectl exec, but offers a –user flag to exec as root (or any other user)
• ‘ssh’ is a misnomer (it works by mounting a docker socket as a volume), but it’s easier to work with as a command.
• You must be in the same namespace as the target pod or you can use -n namespace option to specify the namespace
• Kudos to mikelorant for thinking of the docker socket! :)

Usage: kubectl ssh [OPTIONAL: -n <namespace>] [OPTIONAL: -u <user>] [OPTIONAL: -c <Container Name>] [REQUIRED: <PodName> ] -- [command]

Example: kubectl ssh -n default -u root -c prometheus prometheus-282sd0s2 -- bash

Option	Required	Description	Example
-h	N	Show usage	kubectl ssh -h
-d	N	Enable debug mode. Print a trace of each commands	kubectl ssh -d kafka-0
-n	N	The namespace scope for this CLI request	kubectl ssh -n infra kafka-0
-u	N	User to exec as. Defaults to root	kubectl ssh -u kafka kafka-0
-c	N	Specify container within pod	kubectl ssh -c burrow-metrics kafka-0
–	N	Pass an optional command. Defaults to /bin/sh	kubectl ssh kafka -- ls /etc/burrow

kubectl switch

• View current namespace: kubectl switch
• Switch namespace: kubectl switch preprod
• Switch cluster: kubectl switch cluster staging (accepts fuzzy on the cluster name)
• List and select from all available clusters: kubeclt switch cluster -l

Option	Required	Description	Example
-l	N	List available clusters and prompts for selection. Can only be used when cluster is passed.	kubNctl switch cluster -l
-h	N	Show usage	kubectl switch -h

kubectl prompt

• Displays a warning prompt when issuing commands in a flagged cluster or namespace
• Commands that trigger the prompt include create, scale, delete, apply, etc.,
• Flag a namespace: kubectl prompt add -n production
• Flag a cluster: kubectl prompt add -c my-cluster
• List flagged environments: kubectl prompt list
• Clear flagged environments: kubectl prompt remove
• View description: kubectl prompt

kubectl image

• Search for Docker images
• If you have a Google Container Registry, run kubectl image -c to set it as the default for future searches.
• If not configured with -c, searches will use Docker Hub by default.
• Adding -p will search Docker Hub, regardless of any default.
• Sorts Docker Hub images by number of stars.
• Sorts GCR images by upload date.

Example: kubectl image kafka

kubectl ip

• Outputs the node name, node IP, and Pod IP for a given resource. Search is performed against common labels (defaults to app, name, component)

Example: kubectl ip cassandra

kubectl uptime

• Displays total uptime for pods/statefulsets in the current namespace.

Example: kubectl uptime

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