WIP: Propose PR when overcloud host images are built

Author: MoteHue

.github/workflows/overcloud-host-image-build.yml

@@ -391,6 +391,22 @@ jobs:
           OS_APPLICATION_CREDENTIAL_SECRET: ${{ secrets.OS_APPLICATION_CREDENTIAL_SECRET }}
         if: always()
 
+      - name: Trigger update overcloud host image tags
+        run: |
+          gh workflow run \
+          update-overcloud-host-image-tags.yml \
+          --repo stackhpc/stackhpc-kayobe-config \
+          --ref $BRANCH_NAME \
+          -f rocky9_tag=${{ steps.host_image_tag.outputs.host_image_tag }} \
+          -f ubuntu_noble_tag=${{ steps.host_image_tag.outputs.host_image_tag }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.STACKHPC_RELEASE_TRAIN_TOKEN }}
+          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
+
+      - name: Display link to update overcloud host image tags workflows
+        run: |
+          echo "::notice Overcloud host image promote workflow: https://github.com/stackhpc/stackhpc-kayobe-config/actions/workflows/update-overcloud-host-image-tags.yml"
+
       - name: Send message to Slack via Workflow Builder
         uses: slackapi/[email protected]
         with:

.github/workflows/update-overcloud-host-image-tags.yml

@@ -0,0 +1,58 @@
+name: Update overcloud host image tags
+
+on:
+  workflow_call:
+    inputs:
+      rocky9_tag:
+        description: Overcloud host image tag for Rocky 9
+        type: string
+        required: true
+      ubuntu_noble_tag:
+        description: Overcloud host image tag for Ubuntu
+        type: string
+        required: true
+
+jobs:
+  propose_overcloud_host_image_tag_updates:
+    if: github.repository == 'stackhpc/stackhpc-kayobe-config'
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: write
+      pull-requests: write
+    name: Update overcloud host image tags
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: stackhpc/2025.1
+          path: ${{ github.workspace }}/src/kayobe-config
+
+      - name: Update dependency key
+        run: |
+          sed -i "s/$SEARCH/$PREFIX$TAG_OVERRIDE/g" $REQUIREMENTS
+        env:
+          PREFIX: ${{ matrix.prefix }}
+          TAG: ${{ steps.latest_tag.outputs.latest_tag }}
+          REQUIREMENTS: ${{ github.workspace }}/${{ matrix.path }}
+          SEARCH: ${{ matrix.search_regex }}
+
+      - name: Propose changes via PR if required
+        uses: peter-evans/create-pull-request@v7
+        with:
+          path: ${{ github.workspace }}/src/kayobe-config
+          commit-message: >-
+            Bump ${{ matrix.key }} to ${{ steps.latest_tag.outputs.latest_tag }}
+          author: stackhpc-ci <[email protected]>
+          branch: update-dependency/${{ matrix.key }}/${{ inputs.openstack_version }}
+          delete-branch: true
+          title: >-
+            Bump ${{ matrix.key }} to ${{ steps.latest_tag.outputs.latest_tag }}
+          body: >
+            This PR was created automatically to update ${{ inputs.openstack_version }}
+            ${{ matrix.key }} to ${{ steps.latest_tag.outputs.latest_tag }}.
+
+            GitHub Release Changelog:
+            https://github.com/stackhpc/${{ matrix.key }}/releases/tag/${{ steps.latest_tag.outputs.latest_tag }}
+          labels: |
+            automated
+            ${{ inputs.openstack_codename }}