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Plugin for opening a root shell to k3d containter (#1709) 

* Plugin for opening a root shell to k3d containter

* Add namespace and context to kubectl call

Co-authored-by: Igor Iatsenko <igor.iatsenko@here.com>
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iserpent 2022-09-18 16:08:38 +02:00 committed by GitHub
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15
plugins/README.md
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K9s plugins extend the tool to provide additional functionality via actions to further help you observe or administer your Kubernetes clusters.
| Plugin-Name | Description | Available on Views | Shortcut | Kubectl plugin, external dependencies |
|-----------------|----------------------------------|--------------------|----------|---------------------------------------------------------------------------------------|
| log_stern.yml | View resource logs using stern | pods | Ctrl-l | |
| log_jq.yml | View resource logs using jq | pods | Ctrl-j | kubectl-plugins/kubectl-jq |
| job_suspend.yml | Suspends a running cronjob | cronjobs | Ctrl-s | |
| dive.yml | Dive image layers | containers | d | [Dive](https://github.com/wagoodman/dive) |
| get-all.yml | get all resources in a namespace | all | g | [Krew](https://krew.sigs.k8s.io/), [ketall](https://github.com/corneliusweig/ketall/) |
| Plugin-Name | Description | Available on Views | Shortcut | Kubectl plugin, external dependencies |
|--------------------|----------------------------------|--------------------|----------|---------------------------------------------------------------------------------------|
| log_stern.yml | View resource logs using stern | pods | Ctrl-l | |
| log_jq.yml | View resource logs using jq | pods | Ctrl-j | kubectl-plugins/kubectl-jq |
| job_suspend.yml | Suspends a running cronjob | cronjobs | Ctrl-s | |
| dive.yml | Dive image layers | containers | d | [Dive](https://github.com/wagoodman/dive) |
| k3d_root_shell.yml | Root shell to k3d container | containers | Shift-s | [jq](https://stedolan.github.io/jq/) |
| get-all.yml | get all resources in a namespace | all | g | [Krew](https://krew.sigs.k8s.io/), [ketall](https://github.com/corneliusweig/ketall/) |

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plugins/k3d_root_shell.yml Normal file
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plugin:
# Opens a shell to k3d container as root
k3d-root-shell:
shortCut: Shift-S
confirm: false
description: "Root Shell"
scopes:
- containers
command: bash
background: false
args:
- -c
- |
# Check dependencies
command -v jq >/dev/null || { echo -e "jq is not installed (https://stedolan.github.io/jq/)\nPress 'q' to close" | less; exit 1; }
# Extract node name and container ID
POD_DATA="$(kubectl get pod/$POD -o json --namespace $NAMESPACE --context $CONTEXT)"
# ${...} is used to prevent variable substitution by k9s (e.g. $POD_DATA)
NODE_NAME=$(echo "${POD_DATA}" | jq -r '.spec.nodeName')
CONTAINER_ID=$(echo "${POD_DATA}" | jq -r '.status.containerStatuses[] | select(.name == "$COL-NAME") | .containerID ' | grep -oP '(?<=containerd://).*')
echo "<<K9s-Root-Shell>> Pod: $NAMESPACE/$POD | Container: $COL-NAME (${NODE_NAME}/${CONTAINER_ID})"
# Credits for this approach to https://gist.github.com/mamiu/4944e10305bc1c3af84946b33237b0e9
docker exec -it $NODE_NAME sh -c "runc --root /run/containerd/runc/k8s.io/ exec -t -u 0 ${CONTAINER_ID} sh"