Merge pull request #4859 from ministryofjustice/add-eks-script

Add script to create GitHub issues for EKS upgrades

scripts/README.md

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+# Creating issues for EKS upgrades
+
+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. |

scripts/eks-updates.sh

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+#!/bin/bash
+
+# get supported versions
+VERSIONS=($(aws eks describe-addon-versions | jq -r ".addons[] | .addonVersions[] | .compatibilities[] | .clusterVersion" | sort | uniq))
+
+# list clusters
+CLUSTERS=(live live-2 manager)
+
+for CLUSTER in "${CLUSTERS[@]}";
+
+do
+  # get cluster versions
+  CLUSTER_VERSION=$(aws eks describe-cluster --name "$CLUSTER" | jq -r '.cluster.version')
+
+  for VERSION in "${VERSIONS[@]}";
+  do
+    if [[ "$CLUSTER_VERSION" != "$VERSION" ]]; then
+      if (( $(echo "$CLUSTER_VERSION < $VERSION" | bc -l) )); then # check if newer version is supported
+        TITLE="EKS: Upgrade $CLUSTER to Kubernetes v$VERSION";
+        BODY=$(cat << END
+## Background
+
+EKS supports Kubernetes $VERSION. The $CLUSTER cluster needs upgrading to Kubernetes $VERSION.
+
+See [Amazon EKS Kubernetes versions](https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html) for more details.
+END
+)
+
+        # get github issues and check if one already exists
+        GITHUB_ISSUES=$(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" --label EPIC --repo ministryofjustice/cloud-platform
+        else
+          echo "Issue already exists for $TITLE, skipping..."
+        fi
+      fi
+    fi
+  done
+done