Drew Malzahn
85c02d7f7f
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scp overwrites in place, which fails with ETXTBSY ("text file busy") on
repeat deploys because systemd is executing /usr/local/bin/share-svc.
Copy to a temp path, chmod, then mv it over the destination so rename(2)
swaps the dir entry without touching the busy inode.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
88 lines
3.3 KiB
YAML
88 lines
3.3 KiB
YAML
name: Deploy
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# Builds the static frontend and the Go share-service, ships both to the
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# Caddy host, and restarts the service.
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#
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# Required repo secret:
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# DEPLOY_SSH_KEY - base64-encoded private SSH key authorized for
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# ${DEPLOY_USER}@${DEPLOY_HOST}. Generate with:
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# base64 -w0 < deploy_key # Linux
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# base64 -i deploy_key | tr -d '\n' # macOS
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#
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# Override host/user/paths via repo variables (Settings > Actions > Variables)
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# if they ever change; the defaults below match the Justfile.
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on:
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push:
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branches: [master]
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workflow_dispatch:
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env:
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DEPLOY_HOST: ${{ vars.DEPLOY_HOST || 'goldfish.malzahn.lan' }}
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DEPLOY_USER: ${{ vars.DEPLOY_USER || 'root' }}
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WWW_ROOT: ${{ vars.WWW_ROOT || '/usr/share/caddy/public_html/fabula' }}
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GO_ARCH: ${{ vars.GO_ARCH || 'amd64' }}
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jobs:
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deploy:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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# --- Build frontend ---
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- uses: actions/setup-node@v4
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with:
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node-version: 20
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cache: npm
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- run: npm ci
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- run: npm run build # -> dist/
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# --- Build backend (static, no cgo) ---
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- uses: actions/setup-go@v5
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with:
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go-version-file: server/go.mod
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cache-dependency-path: server/go.sum
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- name: Build share-svc
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working-directory: server
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run: CGO_ENABLED=0 GOOS=linux GOARCH="$GO_ARCH" go build -o share-svc .
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# --- Deploy ---
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- name: Configure SSH
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run: |
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command -v rsync >/dev/null || { apt-get update && apt-get install -y rsync; }
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mkdir -p ~/.ssh && chmod 700 ~/.ssh
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# DEPLOY_SSH_KEY is stored base64-encoded so the PEM survives the
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# secret round-trip intact (no CRLF/whitespace/newline mangling).
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echo "${{ secrets.DEPLOY_SSH_KEY }}" | base64 -d > ~/.ssh/deploy_key
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chmod 600 ~/.ssh/deploy_key
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ssh-keyscan -H "$DEPLOY_HOST" >> ~/.ssh/known_hosts 2>/dev/null
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- name: Copy frontend
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run: |
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rsync -az --delete -e "ssh -i ~/.ssh/deploy_key" \
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dist/ "$DEPLOY_USER@$DEPLOY_HOST:$WWW_ROOT/"
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- name: Copy backend binary + unit file
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run: |
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# Copy to a temp path then atomically rename into place. You can't
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# overwrite a running executable in place (ETXTBSY / "Text file busy"),
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# but rename(2) just swaps the directory entry while the old inode keeps
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# serving the running process until the restart step picks up the new
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# binary. chmod first so the exec bit survives the rename (scp doesn't
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# preserve mode without -p).
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scp -i ~/.ssh/deploy_key server/share-svc \
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"$DEPLOY_USER@$DEPLOY_HOST:/usr/local/bin/share-svc.new"
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ssh -i ~/.ssh/deploy_key "$DEPLOY_USER@$DEPLOY_HOST" \
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'chmod 0755 /usr/local/bin/share-svc.new && mv -f /usr/local/bin/share-svc.new /usr/local/bin/share-svc'
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scp -i ~/.ssh/deploy_key server/share-svc.service \
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"$DEPLOY_USER@$DEPLOY_HOST:/etc/systemd/system/share-svc.service"
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- name: Restart services
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run: |
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ssh -i ~/.ssh/deploy_key "$DEPLOY_USER@$DEPLOY_HOST" '
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systemctl daemon-reload &&
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systemctl enable --now share-svc &&
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systemctl restart share-svc &&
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systemctl reload caddy
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'
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