nice clean recipes
pear.dunkirk.sh
recipes
feat: add rollback
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.github/workflows/deploy.yml
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.github/workflows/deploy.yml
···
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with:
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go-version-file: go.mod
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- name: Install cross-compiler
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run: sudo apt-get update && sudo apt-get install -y gcc-aarch64-linux-gnu
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- name: Build
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run: GOOS=linux GOARCH=arm64 CGO_ENABLED=0 go build -ldflags "-X main.gitHash=$(git rev-parse --short HEAD)" -o pear .
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run: GOOS=linux GOARCH=arm64 CGO_ENABLED=1 CC=aarch64-linux-gnu-gcc go build -ldflags "-X main.gitHash=$(git rev-parse --short HEAD)" -o pear .
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- name: Setup Tailscale
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uses: tailscale/github-action@v4
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echo "StrictHostKeyChecking accept-new" >> ~/.ssh/config
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- name: Deploy
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id: deploy
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run: |
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C="\033[36m" G="\033[32m" Y="\033[33m" D="\033[2m" R="\033[0m"
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echo "start=$(date +%s)" >> "$GITHUB_OUTPUT"
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PREV_SHORT=$(ssh pear@terebithia "cd ~/app && git rev-parse --short HEAD")
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PREV_FULL=$(ssh pear@terebithia "cd ~/app && git rev-parse HEAD")
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echo "prev_short=$PREV_SHORT" >> "$GITHUB_OUTPUT"
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echo "prev_full=$PREV_FULL" >> "$GITHUB_OUTPUT"
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echo -e "${C}:: pear${R} ${D}${PREV_SHORT}${R}"
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# Snapshot DB before deploy
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ssh pear@terebithia "cp /var/lib/pear/data/pear.db /var/lib/pear/data/pear.db.pre-deploy 2>/dev/null || true"
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# Pull latest code
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ssh pear@terebithia << 'PULL'
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set -e
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cd ~/app
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git fetch --all --quiet
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git reset --hard origin/main --quiet
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PULL
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NEW_SHORT=$(ssh pear@terebithia "cd ~/app && git rev-parse --short HEAD")
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NEW_FULL=$(ssh pear@terebithia "cd ~/app && git rev-parse HEAD")
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echo "new_short=$NEW_SHORT" >> "$GITHUB_OUTPUT"
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echo "new_full=$NEW_FULL" >> "$GITHUB_OUTPUT"
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echo -e "${C}:: pear${R} ${D}${PREV_SHORT} → ${NEW_SHORT}${R}"
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# Upload binary and restart
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echo "::group::upload & restart"
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scp pear pear@terebithia:~/app/pear-new
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ssh pear@terebithia << 'DEPLOY'
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ssh pear@terebithia << 'INSTALL'
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set -e
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cd ~/app
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chmod +x pear-new
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mv -f pear-new pear
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sudo /run/current-system/sw/bin/systemctl restart pear.service
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DEPLOY
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INSTALL
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echo "::endgroup::"
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echo -e "${G}:: deployed pear${R}"
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- name: Health check
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id: health
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run: |
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for i in $(seq 1 12); do
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if curl -sf -o /dev/null "https://pear.dunkirk.sh"; then
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echo "Healthy"
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echo "status=healthy" >> "$GITHUB_OUTPUT"
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exit 0
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fi
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echo "Attempt $i/12 failed"
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sleep 5
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done
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echo "Health check failed"
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exit 1
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echo "status=failed" >> "$GITHUB_OUTPUT"
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exit 1
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- name: Summary
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if: always()
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run: |
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DURATION="$(($(date +%s) - ${{ steps.deploy.outputs.start }}))s"
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PREV_SHORT="${{ steps.deploy.outputs.prev_short }}"
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PREV_FULL="${{ steps.deploy.outputs.prev_full }}"
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NEW_SHORT="${{ steps.deploy.outputs.new_short }}"
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NEW_FULL="${{ steps.deploy.outputs.new_full }}"
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HEALTH="${{ steps.health.outputs.status }}"
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REPO="https://github.com/${{ github.repository }}"
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if [ "${{ job.status }}" = "success" ]; then STATUS="Deployed"; else STATUS="Failed"; fi
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cat >> "$GITHUB_STEP_SUMMARY" << EOF
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| status | commits | health |
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|---|---|---|
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| \`${STATUS}\` in \`${DURATION}\` | [\`${PREV_SHORT}\`](${REPO}/commit/${PREV_FULL}) → [\`${NEW_SHORT}\`](${REPO}/commit/${NEW_FULL}) | \`${HEALTH:-skipped}\` |
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EOF
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- name: Rollback on failure
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if: failure()
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run: |
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echo "::warning::Deploy failed — rolling back pear"
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ssh pear@terebithia << 'ROLLBACK'
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set -e
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RED="\033[31m" Y="\033[33m" G="\033[32m" D="\033[2m" R="\033[0m"
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cd ~/app
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PREV=$(cat /tmp/pear-prev-commit 2>/dev/null || echo "")
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if [ -n "$PREV" ]; then
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SHORT=$(echo "$PREV" | cut -c1-7)
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echo -e "${Y}:: rolling back to ${SHORT}${R}"
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sudo /run/current-system/sw/bin/systemctl stop pear.service || true
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if [ -f /var/lib/pear/data/pear.db.pre-deploy ]; then
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echo -e "${Y}:: restoring database snapshot${R}"
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cp /var/lib/pear/data/pear.db.pre-deploy /var/lib/pear/data/pear.db
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fi
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git reset --hard "$PREV" --quiet
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CGO_ENABLED=1 go build -ldflags "-X main.gitHash=$(git rev-parse --short HEAD)" -o pear .
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sudo /run/current-system/sw/bin/systemctl restart pear.service
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echo -e "${G}:: rolled back to ${SHORT}${R}"
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else
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echo -e "${RED}:: no previous commit recorded, cannot rollback${R}"
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exit 1
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fi
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ROLLBACK