Add ops recipe for pluto (#300)

* Add ops recipe for pluto

* Update content/docs/support-and-ops/ops-recipes/check-deprecated-apis.md

Co-authored-by: Jonas Zeiger <[email protected]>

---------

Co-authored-by: Jonas Zeiger <[email protected]>

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - New recipe for Kyverno stuck in upgrade pending.
+- New recipe for Pluto to check deprecated APIs.
 - New recipe explaining how descheduler works.
 - MC types to glossary (ephemeral and stable-testing)
 - Added `kubectl debug` info in Troubleshooting recipe

content/docs/support-and-ops/ops-recipes/check-deprecated-apis.md

@@ -0,0 +1,98 @@
+---
+title: "Checking for Deprecated Kubernetes APIs with Pluto"
+owner:
+- https://github.com/orgs/giantswarm/teams/team-planeteers
+classification: public
+---
+
+## Overview
+
+[`pluto`](https://github.com/FairwindsOps/pluto) is a tool developed by Fairwinds that helps identify deprecated Kubernetes APIs in your manifests and Helm charts. Keeping your Kubernetes resources up to date with the latest API versions is crucial to ensure smooth upgrades and compatibility with future Kubernetes releases.
+
+## Prerequisites
+
+- **Pluto Installation**: [Install `pluto`](https://pluto.docs.fairwinds.com/installation/) on your local machine.
+
+### Installing Pluto
+
+You can install `pluto` via Homebrew, downloading a binary, or using a container:
+
+#### Homebrew (macOS)
+
+```bash
+brew install FairwindsOps/tap/pluto
+```
+
+#### Binary Download
+
+Download the latest binary from the [releases page](https://github.com/FairwindsOps/pluto/releases) and place it in your PATH.
+
+#### Docker
+
+You can run `pluto` using a Docker container:
+
+```bash
+docker run --rm -v $(pwd):/work fairwinds/pluto:latest detect-files /work
+```
+
+## Usage
+
+### Checking Kubernetes Manifests
+
+To check Kubernetes manifests for deprecated APIs:
+
+1. **Navigate to the directory** containing your Kubernetes YAML files.
+2. **Run Pluto**:
+
+   ```bash
+   pluto detect-files -d ./path/to/manifests
+   ```
+
+   This command will scan all the YAML files in the specified directory and report any deprecated API versions.
+
+### Checking Helm Charts
+
+To check Helm charts for deprecated APIs:
+
+1. **Navigate to the directory** containing your Helm chart.
+2. **Run Pluto**:
+
+   ```bash
+   helm template test ./helm/<HELM_CHART_NAME> | pluto detect-files
+   ```
+
+   This command will render the Helm template and check the resulting manifests for deprecated APIs.
+
+### Checking Live Kubernetes Cluster
+
+To check the currently deployed resources in a Kubernetes cluster:
+
+1. **Ensure kubectl is configured** to access the desired cluster.
+2. **Run Pluto**:
+
+   ```bash
+   pluto detect-helm -owide
+   ```
+
+   This will scan all Helm releases in the cluster for deprecated APIs.
+
+### Checking Specific API Versions
+
+You can specify which Kubernetes version to check against. For example, to check for deprecations against Kubernetes 1.25:
+
+```bash
+pluto detect-files -d ./path/to/manifests --target-versions=k8s=1.25.0
+```
+
+## Interpreting Results
+
+`pluto` will output a list of resources with deprecated API versions, including the file path, line number, and suggested API version to migrate to. Here’s an example output:
+
+```
++----------------------+-----------------------+------------------+-------------------+
+| KIND                 | NAME                  | DEPRECATED API   | REPLACEMENT API   |
++----------------------+-----------------------+------------------+-------------------+
+| Deployment           | example-deployment    | apps/v1beta1     | apps/v1           |
+| Ingress              | example-ingress       | extensions/v1beta1 | networking.k8s.io/v1 |
++----------------------+-----------------------+------------------+-------------------+
+```