render-web-services

Configure Render web services by setting port binding, health check paths, and deploy lifecycle controls. TLS termination occurs automatically at the Render edge, enabling zero-downtime deployments when health checks pass during the build, swap, and drain phases.

Render web service health checks fail when the configured healthCheckPath does not return a successful response or the PORT environment variable is mismatched. Verify your application binds to the expected port and the health check path returns a valid HTTP response.

Set up a custom domain on Render web services by adding your domain in the Dashboard or Blueprint, then configuring DNS records to point to Render. Render automatically provisions and manages TLS certificates for verified custom domains.

Persistent disks attach to Render web services for file storage across builds and deployments. While you can configure multi-port services, ensure disk mount paths and port binding configurations align to avoid deployment conflicts.

Render web services support auto-deploy from repository changes and PR previews for branch deployments. Configure these deploy lifecycle controls in the Blueprint or Dashboard to automatically build and route traffic to preview instances.

Render web service deploy lifecycle phases include build, pre-deploy, swap, drain, and rollback. These steps manage the transition from old to new instances, ensuring traffic routing stability and zero-downtime updates when health checks pass.