Merge pull request #4868 from ministryofjustice/eks-addon-updates

Add script to create GitHub issues for EKS add-on upgrades

scripts/README.md

@@ -2,6 +2,7 @@
 
 This directory contains scripts to automatically create GitHub issues based on EKS upgrades.
 
-| Script                             | Description                                                                                                                                                                                                                      |
-| ---------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| [eks-updates.sh](./eks-updates.sh) | Fetches current cluster versions and compares them against supported Kubernetes versions in EKS. It creates a GitHub issue (example)[https://github.com/ministryofjustice/cloud-platform/issues/4857] to track upgrade progress. |
+| Script                                         | Description                                                                                                                                                                                                                                                                    |
+| ---------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| [eks-updates.sh](./eks-updates.sh)             | Fetches current cluster versions and compares them against supported Kubernetes versions in EKS. It creates a GitHub issue [example](https://github.com/ministryofjustice/cloud-platform/issues/4857) to track upgrade progress.                                               |
+| [eks-addon-updates.sh](./eks-addon-updates.sh) | Fetches cluster add-on versions and compares them against the latest supported add-on version for the Kubernetes version a cluster is running. It creates a GitHub issue [example](https://github.com/ministryofjustice/cloud-platform/issues/4867) to track upgrade progress. |

scripts/eks-addon-updates.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# list clusters
+CLUSTERS=(live live-2 manager)
+
+for CLUSTER in "${CLUSTERS[@]}";
+do
+  # get cluster versions
+  CLUSTER_VERSION=$(aws eks describe-cluster --name "$CLUSTER" | jq -r '.cluster.version')
+
+  # get addons
+  CLUSTER_ADDONS=($(aws eks list-addons --cluster-name "$CLUSTER" | jq -r '.addons[] | .'))
+
+  for CLUSTER_ADDON in "${CLUSTER_ADDONS[@]}";
+  do
+    # get addon version for cluster
+    CLUSTER_ADDON_VERSION=$(aws eks describe-addon --cluster-name "$CLUSTER" --addon-name "$CLUSTER_ADDON" | jq -r '.addon.addonVersion')
+
+    # get latest supported addon version for the cluster/k8s version
+    LATEST_SUPPORTED_ADDON_VERSION_FOR_KUBERNETES_VERSION=$(aws eks describe-addon-versions --addon-name "$CLUSTER_ADDON" --kubernetes-version "$CLUSTER_VERSION" | jq -r '.addons[0].addonVersions[0].addonVersion')
+
+    TITLE="EKS addon ($CLUSTER): Update $CLUSTER_ADDON from $CLUSTER_ADDON_VERSION to the latest version"
+
+    if [[ "$LATEST_SUPPORTED_ADDON_VERSION_FOR_KUBERNETES_VERSION" != "$CLUSTER_ADDON_VERSION" ]]; then # check if newer version is supported
+      BODY=$(cat << END
+## Background
+
+There is a new version of the EKS add-on $CLUSTER_ADDON. $CLUSTER_ADDON needs updating on the $CLUSTER cluster. When this issue was created, the latest supported add-on version for Kubernetes $CLUSTER_VERSION was $LATEST_SUPPORTED_ADDON_VERSION_FOR_KUBERNETES_VERSION.
+
+See the [Amazon EKS add-ons](https://docs.aws.amazon.com/eks/latest/userguide/eks-add-ons.html) documentation for more information about addons, or find the latest versions for these EKS add-ons directly:
+
+- [coredns](https://docs.aws.amazon.com/eks/latest/userguide/managing-coredns.html)
+- [kube-proxy](https://docs.aws.amazon.com/eks/latest/userguide/managing-kube-proxy.html)
+- [vpc-cni](https://docs.aws.amazon.com/eks/latest/userguide/managing-vpc-cni.html)
+END
+)
+
+      GITHUB_ISSUES=$(gh issue list --repo ministryofjustice/cloud-platform --state all --search "in:title \"$TITLE\"" --limit 50 --json title | jq -r "[ .[] | select(.title == \"$TITLE\") ] | length")
+
+      # if no issues yet, create one
+      if (( $(echo "0 == $GITHUB_ISSUES" | bc -l) )); then
+        echo "No issue found for $TITLE, creating one..."
+        gh issue create --title "$TITLE" --body "$BODY" --repo ministryofjustice/cloud-platform
+      else
+        echo "Issue already exists for $TITLE, skipping..."
+      fi
+    else
+      echo "Up to date, skipping issue creation for $TITLE"
+    fi
+
+  done
+done