mmlb · Oct 17, 2026 · Oct 16, 2026
@@ -84,6 +84,11 @@ workflows:
         - 'slackapi/slack-github-action@v4.0.0'
     '.github/workflows/qemu-image-build.yml':
         - 'actions/checkout@v7.0.1'
+        - 'actions/upload-artifact@v7.0.2'
+        - 'aws-actions/configure-aws-credentials@v6.3.0'
+    '.github/workflows/qemu-image-release.yml':
+        - 'actions/checkout@v7.0.1'
+        - 'actions/download-artifact@v8.0.2'
         - 'aws-actions/amazon-ecr-login@v2.1.7'
         - 'aws-actions/configure-aws-credentials@v6.3.0'
         - 'slackapi/slack-github-action@v4.0.0'

@@ -231,7 +231,7 @@ jobs:
       - checks-aarch64-darwin
       - checks-aarch64-linux
       - checks-x86_64-linux
-    # must always run, otherwise if any of the needs fail then this is skipped and PR is allowed through 
+    # must always run, otherwise if any of the needs fail then this is skipped and PR is allowed through
     # not sure what GH's thinking is there that skipped == passed for the branch protection rule...
     # insert Mr Incredible meme -> pass is pass, skipped is not passed, PR should not merge
     if: always()
@@ -264,6 +264,10 @@ jobs:
       DEV_AWS_ROLE: ${{ secrets.DEV_AWS_ROLE }}
       NIX_SIGN_SECRET_KEY: ${{ secrets.NIX_SIGN_SECRET_KEY }}
 
+  qemu:
+    needs: builds-aarch64-linux
+    uses: $/.github/workflows/qemu-image-build.yml
+
   check:
     name: Nix CI ✅
     if: always()
@@ -272,6 +276,7 @@ jobs:
       - amis
       - checks
       - containers
+      - qemu
       - schema
     steps:
       - name: Check dependent job results

@@ -1,16 +1,27 @@
 name: Build QEMU image
 
 on:
-  push:
-    branches:
-      - develop
-      - release/*
-    paths:
-      - ansible/postgres_release.yml
+  workflow_call:
+    inputs:
+      arch:
+        description: Guest architecture (amd64 is experimental and publishes only to staging)
+        type: string
+        default: arm64
+      publish:
+        description: Upload the built disk image as an artifact for the release workflow
+        type: boolean
+        default: false
+    outputs:
+      version:
+        description: Image tag for this build
+        value: ${{ jobs.build.outputs.version }}
+      artifact:
+        description: Name of the uploaded disk image artifact (empty unless publish was set)
+        value: ${{ jobs.build.outputs.artifact }}
   workflow_dispatch:
     inputs:
       arch:
-        description: 'Guest architecture (amd64 is experimental and publishes only to staging)'
+        description: Guest architecture (amd64 is experimental and publishes only to staging)
         type: choice
         default: arm64
         options:
@@ -19,63 +30,28 @@ on:
 
 permissions:
   contents: read
-  id-token: write
 
 jobs:
-  prepare:
-    runs-on: blacksmith-2vcpu-ubuntu-2404
-    outputs:
-      postgres_versions: ${{ steps.set-versions.outputs.postgres_versions }}
-    steps:
-      - name: Checkout Repo
-        uses: actions/checkout@v7.0.1
-
-      - name: Set PostgreSQL versions - only builds pg17 atm
-        id: set-versions
-        run: |
-          VERSIONS=$(yq -e -o=json -I=0 '[.postgres_major[1]]' ansible/vars.yml)
-          echo "postgres_versions=$VERSIONS" >> $GITHUB_OUTPUT
-
   build:
-    needs: prepare
-    strategy:
-      matrix:
-        postgres_version: ${{ fromJson(needs.prepare.outputs.postgres_versions) }}
-        arch: ["${{ inputs.arch || 'arm64' }}"]
-    runs-on: ${{ matrix.arch == 'amd64' && 'blacksmith-16vcpu-ubuntu-2404' || 'arm-native-runner' }}
+    runs-on: ${{ inputs.arch == 'amd64' && 'blacksmith-16vcpu-ubuntu-2404' || 'arm-native-runner' }}
     env:
-      TARGET_ARCH: ${{ matrix.arch }}
+      # only builds pg17 atm
+      POSTGRES_MAJOR_VERSION: "17"
+      TARGET_ARCH: ${{ inputs.arch || 'arm64' }}
     timeout-minutes: 150
+    outputs:
+      version: ${{ steps.process_release_version.outputs.version }}
+      artifact: ${{ inputs.publish && format('qemu-image-{0}', inputs.arch || 'arm64') || '' }}
     permissions:
-      contents: write
-      packages: write
-      id-token: write
+      contents: read
 
     steps:
       - name: Checkout Repo
         uses: actions/checkout@v7.0.1
 
-      - name: enable KVM support
-        run: |
-          sudo chown runner /dev/kvm
-          sudo chmod 666 /dev/kvm
-
-      - name: Set PostgreSQL version environment variable
-        run: |
-          echo "POSTGRES_MAJOR_VERSION=${{ matrix.postgres_version }}" >> $GITHUB_ENV
-
       - name: Install Nix
         uses: $/.github/actions/install-nix
 
-      - name: Run checks if triggered manually
-        if: ${{ github.event_name == 'workflow_dispatch' && matrix.arch == 'arm64' }}
-        run: |
-          SUFFIX=$(nix run nixpkgs#yq -- -e '.postgres_release.postgres${{ matrix.postgres_version }}' ansible/postgres_release.yml | sed -E 's/[0-9\.]+(.*)$/\1/')
-          if [[ -z $SUFFIX ]] ; then
-            echo "Version must include non-numeric characters if built manually."
-            exit 1
-          fi
-
       - name: Verify QEMU can use KVM
         shell: bash
         run: |
@@ -99,81 +75,35 @@ jobs:
       - name: Build QEMU artifact
         env:
           GIT_SHA: ${{ steps.resolve-git-sha.outputs.sha }}
-        run: BUILD_QEMU_IMAGE_HW_VIRT_ONLY=1 nix run .#build-qemu-image "${{ matrix.postgres_version }}" "$TARGET_ARCH"
+        run: BUILD_QEMU_IMAGE_HW_VIRT_ONLY=1 nix run .#build-qemu-image "$POSTGRES_MAJOR_VERSION" "$TARGET_ARCH"
 
       - name: Grab release version
         id: process_release_version
         run: |
-          PG_VERSION=$(nix run nixpkgs#yq -- -er '.postgres_release.postgres${{ matrix.postgres_version }}' ansible/postgres_release.yml)
+          PG_VERSION=$(nix run nixpkgs#yq -- -er ".postgres_release.postgres$POSTGRES_MAJOR_VERSION" ansible/postgres_release.yml)
           if [[ "$TARGET_ARCH" == amd64 ]]; then
             PG_VERSION="$PG_VERSION-amd64-$GITHUB_RUN_ID-$GITHUB_RUN_ATTEMPT"
           fi
           echo "version=$PG_VERSION" >> $GITHUB_OUTPUT
 
-      - name: configure aws credentials - staging
-        if: ${{ github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release/') }}
-        uses: aws-actions/configure-aws-credentials@v6.3.0
-        with:
-          role-to-assume: ${{ secrets.CONTROL_PLANE_DEV_ROLE }}
-          aws-region: "us-east-1"
-
-      - name: Login to Amazon ECR Staging
-        if: ${{ github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release/') }}
-        id: login-ecr-private-dev
-        uses: aws-actions/amazon-ecr-login@v2.1.7
-
       - name: Build image
         env:
           IMAGE_TAG: ${{ steps.process_release_version.outputs.version }}
         run: |
           docker build --platform "linux/$TARGET_ARCH" -f Dockerfile-kubernetes -t "postgres:$IMAGE_TAG" packer-work-qemu-*
 
-      - name: Push docker image to Amazon ECR
-        if: ${{ github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release/') }}
-        env:
-          REGISTRY: 812073016711.dkr.ecr.us-east-1.amazonaws.com
-          REPOSITORY: postgres-vm-image
-          IMAGE_TAG: ${{ steps.process_release_version.outputs.version }}
-        run: |
-          docker tag "postgres:$IMAGE_TAG" "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
-          docker push "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
-
-      # TODO (darora): temporarily also push to prod account from here - add a guard to only publish proper tagged releases to prod?
-      - name: configure aws credentials - prod
-        if: ${{ matrix.arch == 'arm64' && (github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release/')) }}
-        uses: aws-actions/configure-aws-credentials@v6.3.0
-        with:
-          role-to-assume: ${{ secrets.CONTROL_PLANE_PROD_ROLE }}
-          aws-region: "us-east-1"
-
-      - name: Login to Amazon ECR Prod
-        if: ${{ matrix.arch == 'arm64' && (github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release/')) }}
-        id: login-ecr-private-prod
-        uses: aws-actions/amazon-ecr-login@v2.1.7
-
-      - name: Push docker image to Amazon ECR Prod
-        if: ${{ matrix.arch == 'arm64' && (github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release/')) }}
-        env:
-          REGISTRY: 156470330064.dkr.ecr.us-east-1.amazonaws.com
-          REPOSITORY: postgres-vm-image
-          IMAGE_TAG: ${{ steps.process_release_version.outputs.version }}
+      - name: Compress disk image
+        if: inputs.publish
         run: |
-          docker tag "postgres:$IMAGE_TAG" "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
-          docker push "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
+          nix run nixpkgs#zstd -- -T0 -o "$RUNNER_TEMP/packer-cloudimg.zst" packer-work-qemu-*/output-cloudimg/packer-cloudimg
 
-      - name: Slack Notification on Failure
-        if: ${{ failure() }}
-        uses: slackapi/slack-github-action@v4.0.0
+      - name: Upload disk image
+        if: inputs.publish
+        uses: actions/upload-artifact@v7.0.2
         with:
-          webhook: ${{ secrets.SLACK_NOTIFICATIONS_WEBHOOK }}
-          webhook-type: incoming-webhook
-          payload: |
-            username: gha-failure
-            icon_emoji: ':old_man_yells_at_github_actions:'
-            channel: C0C16MJ8WHX
-            text: |
-              *Building Postgres QEMU artifact failed*
-              *Actions URL:* <${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ github.workflow }}>
-              *Event:* ${{ github.event_name }}
-              *Ref:* ${{ github.ref }}
-              *Commit:* <${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}|${{ github.sha }}>
+          name: qemu-image-${{ env.TARGET_ARCH }}
+          path: ${{ runner.temp }}/packer-cloudimg.zst
+          # already zstd-compressed
+          compression-level: 0
+          retention-days: 3
+          if-no-files-found: error
@@ -0,0 +1,129 @@
+name: Release QEMU image
+
+on:
+  push:
+    branches:
+      - develop
+      - release/*
+    paths:
+      - ansible/postgres_release.yml
+  workflow_dispatch:
+    inputs:
+      arch:
+        description: Guest architecture (amd64 is experimental and publishes only to staging)
+        type: choice
+        default: arm64
+        options:
+          - arm64
+          - amd64
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    uses: $/.github/workflows/qemu-image-build.yml
+    with:
+      arch: ${{ inputs.arch || 'arm64' }}
+      publish: true
+
+  publish:
+    needs: build
+    runs-on: ${{ inputs.arch == 'amd64' && 'blacksmith-16vcpu-ubuntu-2404' || 'arm-native-runner' }}
+    timeout-minutes: 60
+    env:
+      POSTGRES_MAJOR_VERSION: "17"
+      TARGET_ARCH: ${{ inputs.arch || 'arm64' }}
+      IMAGE_TAG: ${{ needs.build.outputs.version }}
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v7.0.1
+
+      - name: Install Nix
+        uses: $/.github/actions/install-nix
+
+      - name: Run checks if publishing manually
+        if: github.event_name == 'workflow_dispatch' && env.TARGET_ARCH == 'arm64'
+        run: |
+          SUFFIX=$(nix run nixpkgs#yq -- -e ".postgres_release.postgres$POSTGRES_MAJOR_VERSION" ansible/postgres_release.yml | sed -E 's/[0-9\.]+(.*)$/\1/')
+          if [[ -z $SUFFIX ]] ; then
+            echo "Version must include non-numeric characters if published manually."
+            exit 1
+          fi
+
+      - name: Download disk image
+        uses: actions/download-artifact@v8.0.2
+        with:
+          name: ${{ needs.build.outputs.artifact }}
+          path: ${{ runner.temp }}/disk-image
+
+      - name: Build image
+        run: |
+          mkdir -p image-context/output-cloudimg
+          nix run nixpkgs#zstd -- -d -o image-context/output-cloudimg/packer-cloudimg "$RUNNER_TEMP/disk-image/packer-cloudimg.zst"
+          docker build --platform "linux/$TARGET_ARCH" -f Dockerfile-kubernetes -t "postgres:$IMAGE_TAG" image-context
+
+      - name: configure aws credentials - staging
+        uses: aws-actions/configure-aws-credentials@v6.3.0
+        with:
+          role-to-assume: ${{ secrets.CONTROL_PLANE_DEV_ROLE }}
+          aws-region: "us-east-1"
+
+      - name: Login to Amazon ECR Staging
+        id: login-ecr-private-dev
+        uses: aws-actions/amazon-ecr-login@v2.1.7
+
+      - name: Push docker image to Amazon ECR
+        env:
+          REGISTRY: 812073016711.dkr.ecr.us-east-1.amazonaws.com
+          REPOSITORY: postgres-vm-image
+        run: |
+          docker tag "postgres:$IMAGE_TAG" "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
+          docker push "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
+
+      # TODO (darora): temporarily also push to prod account from here - add a guard to only publish proper tagged releases to prod?
+      - name: configure aws credentials - prod
+        if: env.TARGET_ARCH == 'arm64'
+        uses: aws-actions/configure-aws-credentials@v6.3.0
+        with:
+          role-to-assume: ${{ secrets.CONTROL_PLANE_PROD_ROLE }}
+          aws-region: "us-east-1"
+
+      - name: Login to Amazon ECR Prod
+        if: env.TARGET_ARCH == 'arm64'
+        id: login-ecr-private-prod
+        uses: aws-actions/amazon-ecr-login@v2.1.7
+
+      - name: Push docker image to Amazon ECR Prod
+        if: env.TARGET_ARCH == 'arm64'
+        env:
+          REGISTRY: 156470330064.dkr.ecr.us-east-1.amazonaws.com
+          REPOSITORY: postgres-vm-image
+        run: |
+          docker tag "postgres:$IMAGE_TAG" "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
+          docker push "$REGISTRY/$REPOSITORY:$IMAGE_TAG"
+
+  notify:
+    needs: [build, publish]
+    if: failure()
+    runs-on: blacksmith-2vcpu-ubuntu-2404
+    steps:
+      - name: Slack Notification on Failure
+        uses: slackapi/slack-github-action@v4.0.0
+        with:
+          webhook: ${{ secrets.SLACK_NOTIFICATIONS_WEBHOOK }}
+          webhook-type: incoming-webhook
+          payload: |
+            username: gha-failure
+            icon_emoji: ':old_man_yells_at_github_actions:'
+            channel: C0C16MJ8WHX
+            text: |
+              *Building Postgres QEMU artifact failed*
+              *Actions URL:* <${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ github.workflow }}>
+              *Event:* ${{ github.event_name }}
+              *Ref:* ${{ github.ref }}
+              *Commit:* <${{ github.server_url }}/${{ github.repository }}/commit/${{ github.sha }}|${{ github.sha }}>
@@ -41,7 +41,8 @@ service:
     running: true
   ssh:
     enabled: false
-    running: true
+  ssh.socket:
+    enabled: true
   atd:
     enabled: false
     running: false

@@ -41,7 +41,8 @@ service:
     running: true
   ssh:
     enabled: false
-    running: true
+  ssh.socket:
+    enabled: true
   atd:
     enabled: false
     running: false