From 1f1c0c53a121ab1eb373b40aecab16f86d48db81 Mon Sep 17 00:00:00 2001
From: Jason Deal <jmdeal@amazon.com>
Date: Tue, 20 Aug 2024 11:36:01 -0700
Subject: [PATCH] docs: detail how to discover alias versions

---
 .../content/en/docs/concepts/nodeclasses.md   | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/website/content/en/docs/concepts/nodeclasses.md b/website/content/en/docs/concepts/nodeclasses.md
index bd7a70d50629..90a285642dcc 100644
--- a/website/content/en/docs/concepts/nodeclasses.md
+++ b/website/content/en/docs/concepts/nodeclasses.md
@@ -731,6 +731,27 @@ alias: bottlerocket@v1.20.4
 ```
 The Windows family does not support pinning, so only `latest` is supported.
 
+The following commands can be used to determine the versions availble for an alias in your region:
+
+{{< tabpane text=true right=false >}}
+  {{% tab "AL2023" %}}
+  ```bash
+  aws ssm get-parameters-by-path --path "/aws/service/eks/optimized-ami/$K8S_VERSION/amazon-linux-2023/" --recursive | jq -c '.Parameters[].Name' | tr -d '"' | grep -v "recommended" | awk -F '/' '{print $10}' | sed -r 's/.*(v[[:digit:]]+)$/\1/' | sort | uniq
+  ```
+  {{% /tab %}}
+  {{% tab "AL2" %}}
+  ```bash
+  aws ssm get-parameters-by-path --path "/aws/service/eks/optimized-ami/$K8S_VERSION/amazon-linux-2/" --recursive | jq -c '.Parameters[].Name' | tr -d '"' | grep -v "recommended" | awk -F '/' '{print $8}' | sed -r 's/.*(v[[:digit:]]+)$/\1/' | sort | uniq
+  ```
+  {{% /tab %}}
+  {{% tab "Bottlerocket" %}}
+  ```bash
+  aws ssm get-parameters-by-path --path "/aws/service/bottlerocket/aws-k8s-$K8S_VERSION" --recursive | jq -c '.Parameters[].Name' | tr -d '"' | grep -v "latest" | awk -F '/' '{print $7}' | sort | uniq
+  ```
+  {{% /tab %}}
+{{< /tabpane >}}
+
+
 To select an AMI by name, use the `name` field in the selector term. To select an AMI by id, use the `id` field in the selector term. To select AMIs that are not owned by `amazon` or the account that Karpenter is running in, use the `owner` field - you can use a combination of account aliases (e.g. `self` `amazon`, `your-aws-account-name`) and account IDs.
 
 If owner is not set for `name`, it defaults to `self,amazon`, preventing Karpenter from inadvertently selecting an AMI that is owned by a different account. Tags don't require an owner as tags can only be discovered by the user who created them.
@@ -1534,4 +1555,4 @@ NodeClasses have the following status conditions:
 | AMIsReady            | AMIs are discovered                                                                                                                                                                                                               |
 | Ready                | Top level condition that indicates if the nodeClass is ready. If any of the underlying conditions is `False` then this condition is set to `False` and `Message` on the condition indicates the dependency that was not resolved. |
 
-If a NodeClass is not ready, NodePools that reference it through their `nodeClassRef` will not be considered for scheduling.
\ No newline at end of file
+If a NodeClass is not ready, NodePools that reference it through their `nodeClassRef` will not be considered for scheduling.