From a76632908386086368a2f6cee59ebfde8a361f60 Mon Sep 17 00:00:00 2001
From: Pavan Gudiwada <25551553+pavangudiwada@users.noreply.github.com>
Date: Tue, 2 Jan 2024 23:03:11 +0530
Subject: [PATCH] Add support for resource recommendations using Robusta KRR
(#2399)
* Adding Robusta KRR as a K9s plugin
* Fixed file extension
* Updated details for simplicity
* Updated Author and dependency details
---
plugins/README.md | 21 +++++++++++----------
plugins/resource-recommendations.yml | 28 ++++++++++++++++++++++++++++
2 files changed, 39 insertions(+), 10 deletions(-)
create mode 100644 plugins/resource-recommendations.yml
diff --git a/plugins/README.md b/plugins/README.md
index f49134e2..4afe2cf1 100644
--- a/plugins/README.md
+++ b/plugins/README.md
@@ -4,16 +4,17 @@ K9s plugins extend the tool to provide additional functionality via actions to f
Following is an example of some of plugin files in this directory. Other files are not listed in this table.
-| Plugin-Name | Description | Available on Views | Shortcut | Kubectl plugin, external dependencies |
-|--------------------|------------------------------------------------------------------|--------------------|----------|---------------------------------------------------------------------------------------|
-| debug-container.yml| Add [ephemeral debug container][1]
([nicolaka/netshoot][2]) | containers | Shift-d | |
-| 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/) |
-| job_suspend.yml | Suspends a running cronjob | cronjobs | Ctrl-s | |
-| k3d_root_shell.yml | Root shell to k3d container | containers | Shift-s | [jq](https://stedolan.github.io/jq/) |
-| 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 |
-| log_full.yml | get full logs from pod/container | pods/containers | Ctrl-l | |
+| Plugin-Name | Description | Available on Views | Shortcut | Kubectl plugin, external dependencies |
+|--------------------|------------------------------------------------------------------|--------------------------|----------|---------------------------------------------------------------------------------------|
+| debug-container.yml| Add [ephemeral debug container][1]
([nicolaka/netshoot][2]) | containers | Shift-d | |
+| 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/) |
+| job_suspend.yml | Suspends a running cronjob | cronjobs | Ctrl-s | |
+| k3d_root_shell.yml | Root shell to k3d container | containers | Shift-s | [jq](https://stedolan.github.io/jq/) |
+| resource-recommendations.yml | View recommendations for CPU/Memory requests based on historical data | deployments/daemonsets/statefulsets | Shift-k | [Robusta KRR](https://github.com/robusta-dev/krr) |
+| 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 |
+| log_full.yml | get full logs from pod/container | pods/containers | Ctrl-l | |
[1]: https://kubernetes.io/docs/tasks/debug/debug-application/debug-running-pod/#ephemeral-container
[2]: https://github.com/nicolaka/netshoot
diff --git a/plugins/resource-recommendations.yml b/plugins/resource-recommendations.yml
new file mode 100644
index 00000000..b85518f6
--- /dev/null
+++ b/plugins/resource-recommendations.yml
@@ -0,0 +1,28 @@
+plugins:
+# Author: Daniel Rubin
+# Get recommendations for CPU/Memory requests and limits using Robusta KRR
+# Requires Prometheus in the Cluster and Robusta KRR (https://github.com/robusta-dev/krr) on your system
+# Open K9s in deployments/daemonsets/statefulsets view, then:
+# Shift-K to get recommendations
+ krr:
+ shortCut: Shift-K
+ description: Get krr
+ scopes:
+ - deployments
+ - daemonsets
+ - statefulsets
+ command: bash
+ background: false
+ confirm: false
+ args:
+ - -c
+ - |
+ LABELS=$(kubectl get $RESOURCE_NAME $NAME -n $NAMESPACE --context $CONTEXT --show-labels | awk '{print $NF}' | awk '{if(NR>1)print}')
+ krr simple --cluster $CONTEXT --selector $LABELS
+ echo "Press 'q' to exit"
+ while : ; do
+ read -n 1 k <&1
+ if [[ $k = q ]] ; then
+ break
+ fi
+ done
\ No newline at end of file