{ "manifest_version": "1.0.0", "template": { "id": "00da5cc9-396f-41ec-a5c4-28fef03bad67", "slug": "prefect", "name": "Prefect [Updated Sep ’26]", "description": "Prefect [Sep ’26] (ETL & Automation alternative to Airflow) Self Host", "url": "https://railway.com/deploy/prefect", "upstream": { "image": "prefecthq/prefect:3-latest" } }, "services": [ { "name": "prefect", "source": { "image": "prefecthq/prefect:3-latest" }, "needs_volume": false, "http": true }, { "name": "Postgres", "source": { "image": "ghcr.io/railwayapp-templates/postgres-ssl:17" }, "needs_volume": true, "volume_mount_path": "/var/lib/postgresql/data", "tcp_ports": [ 5432 ], "http": false } ], "required_inputs": [ { "key": "PORT", "service": "prefect", "description": "Provide a value for PORT.", "secret": false, "strategy": "default", "default": "4200" }, { "key": "PREFECT_UI_URL", "service": "prefect", "description": "Provide a value for PREFECT_UI_URL.", "secret": false, "strategy": "railway_provided", "railway_source": "railway_domain" }, { "key": "PREFECT_API_URL", "service": "prefect", "description": "Provide a value for PREFECT_API_URL.", "secret": false, "strategy": "railway_provided", "railway_source": "railway_domain" }, { "key": "PREFECT_SERVER_API_HOST", "service": "prefect", "description": "Provide a value for PREFECT_SERVER_API_HOST.", "secret": false, "strategy": "default", "default": "0.0.0.0" }, { "key": "PREFECT_SERVER_API_PORT", "service": "prefect", "description": "Provide a value for PREFECT_SERVER_API_PORT.", "secret": false, "strategy": "railway_provided", "railway_source": "reference_variable" }, { "key": "PREFECT_API_DATABASE_CONNECTION_URL", "service": "prefect", "description": "Provide a value for PREFECT_API_DATABASE_CONNECTION_URL.", "secret": false, "strategy": "railway_provided", "railway_source": "reference_variable" }, { "key": "PGDATA", "service": "Postgres", "description": "Provide a value for PGDATA.", "secret": false, "strategy": "default", "default": "/var/lib/postgresql/data/pgdata" }, { "key": "PGHOST", "service": "Postgres", "description": "Provide a value for PGHOST.", "secret": false, "strategy": "railway_provided", "railway_source": "railway_private_domain" }, { "key": "PGPORT", "service": "Postgres", "description": "Provide a value for PGPORT.", "secret": false, "strategy": "default", "default": "5432" }, { "key": "PGUSER", "service": "Postgres", "description": "Provide a value for PGUSER.", "secret": false, "strategy": "railway_provided", "railway_source": "reference_variable" }, { "key": "PGDATABASE", "service": "Postgres", "description": "Provide a value for PGDATABASE.", "secret": false, "strategy": "railway_provided", "railway_source": "reference_variable" }, { "key": "PGPASSWORD", "service": "Postgres", "description": "Provide a value for PGPASSWORD.", "secret": true, "strategy": "railway_provided", "railway_source": "reference_variable" }, { "key": "POSTGRES_DB", "service": "Postgres", "description": "Provide a value for POSTGRES_DB.", "secret": false, "strategy": "default", "default": "railway" }, { "key": "DATABASE_URL", "service": "Postgres", "description": "Provide a value for DATABASE_URL.", "secret": false, "strategy": "railway_provided", "railway_source": "railway_private_domain" }, { "key": "POSTGRES_USER", "service": "Postgres", "description": "Provide a value for POSTGRES_USER.", "secret": false, "strategy": "default", "default": "postgres" }, { "key": "SSL_CERT_DAYS", "service": "Postgres", "description": "Provide a value for SSL_CERT_DAYS.", "secret": false, "strategy": "default", "default": "820" }, { "key": "POSTGRES_PASSWORD", "service": "Postgres", "description": "Provide a value for POSTGRES_PASSWORD.", "secret": true, "strategy": "generate", "generate": "strong_password" }, { "key": "DATABASE_PUBLIC_URL", "service": "Postgres", "description": "Provide a value for DATABASE_PUBLIC_URL.", "secret": false, "strategy": "railway_provided", "railway_source": "reference_variable" } ], "deploy": { "mcp": { "server": "railway", "tool": "deploy_template", "args": { "template_code": "prefect" } }, "cli": "railway deploy --template prefect", "api": { "method": "POST", "path": "/graphql/v2", "body": { "query": "mutation templateDeploy($input: TemplateDeployV2Input!) { templateDeployV2(input: $input) { projectId workflowId } }", "variables": { "input": { "templateId": "00da5cc9-396f-41ec-a5c4-28fef03bad67", "serializedConfig": { "services": { "61c4d8be-1831-4f91-9ada-65d3075d8f1e": { "icon": null, "name": "prefect", "deploy": { "startCommand": "prefect server start --host 0.0.0.0 --port 4200", "healthcheckPath": "/api/health" }, "source": { "image": "prefecthq/prefect:3-latest" }, "variables": { "PORT": { "isOptional": false, "defaultValue": "4200" }, "PREFECT_UI_URL": { "isOptional": false, "defaultValue": "https://${{RAILWAY_PUBLIC_DOMAIN}}" }, "PREFECT_API_URL": { "isOptional": false, "defaultValue": "https://${{RAILWAY_PUBLIC_DOMAIN}}/api" }, "PREFECT_SERVER_API_HOST": { "isOptional": false, "defaultValue": "0.0.0.0" }, "PREFECT_SERVER_API_PORT": { "isOptional": false, "defaultValue": "${{PORT}}" }, "PREFECT_API_DATABASE_CONNECTION_URL": { "isOptional": false, "defaultValue": "postgresql+asyncpg://${{Postgres.PGUSER}}:${{Postgres.PGPASSWORD}}@${{Postgres.RAILWAY_TCP_PROXY_DOMAIN}}:${{Postgres.RAILWAY_TCP_PROXY_PORT}}/${{Postgres.PGDATABASE}}" } }, "networking": { "serviceDomains": { "": {} } } }, "f35fafba-11c3-4f14-ac61-b0ce6abc4465": { "icon": "https://devicons.railway.app/i/postgresql.svg", "name": "Postgres", "deploy": { "startCommand": null, "healthcheckPath": null }, "source": { "image": "ghcr.io/railwayapp-templates/postgres-ssl:17" }, "variables": { "PGDATA": { "isOptional": false, "defaultValue": "/var/lib/postgresql/data/pgdata" }, "PGHOST": { "isOptional": false, "defaultValue": "${{RAILWAY_PRIVATE_DOMAIN}}" }, "PGPORT": { "isOptional": false, "defaultValue": "5432" }, "PGUSER": { "isOptional": false, "defaultValue": "${{POSTGRES_USER}}" }, "PGDATABASE": { "isOptional": false, "defaultValue": "${{POSTGRES_DB}}" }, "PGPASSWORD": { "isOptional": false, "defaultValue": "${{POSTGRES_PASSWORD}}" }, "POSTGRES_DB": { "isOptional": false, "defaultValue": "railway" }, "DATABASE_URL": { "isOptional": false, "defaultValue": "postgresql://${{PGUSER}}:${{POSTGRES_PASSWORD}}@${{RAILWAY_PRIVATE_DOMAIN}}:5432/${{PGDATABASE}}" }, "POSTGRES_USER": { "isOptional": false, "defaultValue": "postgres" }, "SSL_CERT_DAYS": { "isOptional": false, "defaultValue": "820" }, "POSTGRES_PASSWORD": { "isOptional": false, "defaultValue": "{{POSTGRES_PASSWORD}}" }, "DATABASE_PUBLIC_URL": { "isOptional": false, "defaultValue": "postgresql://${{PGUSER}}:${{POSTGRES_PASSWORD}}@${{RAILWAY_TCP_PROXY_DOMAIN}}:${{RAILWAY_TCP_PROXY_PORT}}/${{PGDATABASE}}" } }, "networking": { "tcpProxies": { "5432": {} } }, "volumeMounts": { "f35fafba-11c3-4f14-ac61-b0ce6abc4465": { "mountPath": "/var/lib/postgresql/data" } }, "haTemplateCode": "postgres-ha", "haConversionConfig": { "edge": { "label": "Reverse Proxy", "options": [ 2, 3, 4, 5 ], "nodeLabel": "HAProxy", "description": "Routes traffic to the primary", "defaultValue": 3 }, "replica": { "label": "Replicas", "options": [ 2, 3, 4, 5, 6, 7 ], "nodeLabel": "Postgres", "description": "Streaming replicas for automatic failover", "defaultValue": 2 }, "internal": { "label": "Coordinator Nodes", "options": [ 3, 5, 7, 9 ], "nodeLabel": "etcd", "defaultValue": 3 }, "description": "This will convert your Postgres database to an HA cluster with Patroni failover and etcd consensus." } } } } } } } } }, "post_deploy": { "healthcheck": { "service": "prefect", "method": "GET", "path": "/api/health", "expect_status": 200 } }, "resources": { "expected_services": 2, "needs_volume": true }, "generated_at": "2026-09-13T10:14:32.962Z", "generator_version": "0.1.0", "status": "validated", "validated_at": "2026-09-12T01:27:05.915Z", "success_rate_30d": 1, "validation": { "last_run_id": "run_600f6dfc13a74a52b490", "checks": [ { "name": "workflow_completed", "passed": true }, { "name": "all_services_deployed", "passed": true }, { "name": "healthcheck", "passed": true }, { "name": "stays_up", "passed": true } ], "typical_ready_seconds": 214, "typical_build_seconds": 0, "typical_start_seconds": 132, "slowest_service": "prefect" } }