How to Troubleshoot Deployment Failures on DigitalOcean App Platform
Deployment failures often stem from health check issues (app not binding to 0.0.0.0:$PORT), missing env vars, container errors, or resource limits. Start by reviewing build and deploy logs in the dashboard, verify port binding and configs locally, then force a rebuild with cache clear. Most issues resolve in 15-45 minutes via log inspection and quick fixes.
Prerequisites
- Access to DigitalOcean account and App Platform dashboard
- App source code cloned locally for testing
- Familiarity with app runtime (e.g., Node.js package.json, Python requirements.txt)
- Environment variables and secrets configured
- Local dev environment matching Linux AMD64
Step-by-Step Instructions
Access Failed Deployment Details
Examine Build Logs
package.json or requirements.txt), syntax issues, or 'build complete' followed by failure. Builds use cached layers unless cleared; check for resource exhaustion like disk space.Review Deploy Logs
/ after 90s; ensure app listens on $PORT default 8080); ContainerOutOfMemory (increase instance size). Copy error messages.Check App Configuration
DATABASE_URL match local; edit to trigger redeploy); Health Checks (ensure HTTP path responds; disable temporarily).Verify Resource Limits
Force Rebuild and Deploy
Test with Interactive Console
ps aux, curl http://localhost:$PORT to verify app state, port binding, and services.Validate Locally and Reconnect Repo
manage.py, requirements.txt) at root, test on Linux AMD64. Reconnect GitHub repo if disconnected; commit live changes first.Address Database/Env Issues
DATABASE_URL and secrets; for Docker apps, ensure SSL/CA certs. Test connections locally matching App Platform env.Common Issues & Troubleshooting
ContainerHealthChecksFailed or No Deploy Logs
Bind app to process.env.PORT || 3000 and '0.0.0.0' (e.g., Node: app.listen(process.env.PORT, '0.0.0.0')). Disable/relax health checks in dashboard; ensure fast startup and 200 response on check path.
ContainerCommandNotExecutable or ContainerExitNonZero
Clear custom run commands; use Procfile or package.json scripts. Check exit codes/stack traces in logs; test in console.
ContainerOutOfMemory or ResourceExhausted
Increase instance size in Settings > Resources; upgrade plan. Contact support for account limits.
Buildpack Detection Failed or Hanging Build
Ensure required files at repo root; force rebuild with cache clear. Check status page; open support ticket with deployment ID.
Missing Env Vars or DB Connection Issues
Double-check all vars/secrets in dashboard match local .env; test redeploy after edits.