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Kubernetes Helper Script - Quickly bash into any environment without having to copy-and-paste namespace names or pod names.
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| #!/bin/bash | |
| # Created by the award-winning Rick Peacock, genericised and extended by James Sheasby Thomas. | |
| #!Usage: ''$ ./kubehelper.sh' then follow prompts. | |
| #! Ensure you have a context set, or hardcode '--context=[yourcontext]' into the kubectl commands in this script. | |
| set -e -o pipefail | |
| echo "Desired namespace (partial match is fine):" | |
| read -r PREFIX | |
| NAMESPACES=$(kubectl get namespaces | grep ^"$PREFIX" | grep Active | awk '{ print $1 }') | |
| if [ -z "$NAMESPACES" ]; then echo "Couldn't find any matching namespaces, please check your prefix is correct or run 'kubectl get namespaces'" && exit 0;fi | |
| echo "Enter the number of your required namespace or q to quit:" | |
| select NAMESPACE in "Quit" $NAMESPACES | |
| do | |
| if [[ "$NAMESPACE" = "Quit" ]]; then exit 0; fi | |
| break | |
| done | |
| echo "Selected namespace: $NAMESPACE" | |
| PODS=$(kubectl --namespace="$NAMESPACE" get pods | grep Running | awk '{ print $1 }') | |
| if [ -z "$PODS" ]; then echo "Couldn't find any running pods, please check the environment's health or run 'kubectl --namespace==$NAMESPACE get pods'" && exit 0;fi | |
| echo "Enter the number of the required pod or q to quit:" | |
| select POD in "Quit" $PODS | |
| do | |
| if [[ "$POD" = "Quit" ]]; then exit 0; fi | |
| break | |
| done | |
| CONTAINERS=$(kubectl --namespace="$NAMESPACE" get pods $POD -o jsonpath='{.spec.containers[*].name}') | |
| if [ -z "$CONTAINERS" ]; then echo "Couldn't find any running containers, please check the environment's health or run 'kubectl --namespace="$NAMESPACE" --pod=$POD get containers'" && exit 0;fi | |
| echo "Enter the number of the required container or q to quit:" | |
| select CONTAINER in "Quit" $CONTAINERS | |
| do | |
| if [[ "$CONTAINER" = "Quit" ]]; then exit 0; fi | |
| break | |
| done | |
| echo "Connecting to $CONTAINER in pod: $POD" | |
| # This command will fail if your chosen container does not come with a shell (common with Go services). | |
| # If you know that the containers you're working with have Bash on them, you can change /bin/sh to /bin/bash | |
| kubectl --namespace="$NAMESPACE" exec -it "$POD" --container=$CONTAINER -- /bin/sh |
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