Server Configuration

This Document describes the Darkseal server configuration.

Overview

server:
  rootPath: '/api/*'
  applicationConnectors:
    - type: http
      port: 8585
  adminConnectors:
    - type: http
      port: 8586

# Logging settings.
# https://logback.qos.ch/manual/layouts.html#conversionWord
logging:
  level: INFO
  loggers:
    org.openmetadata.service.common: DEBUG
    io.swagger: ERROR
  appenders:
    - type: file
      threshold: TRACE
      logFormat: "%level [%d{HH:mm:ss.SSS}] [%t] %logger{5} - %msg %n"
      currentLogFilename: ./logs/openmetadata.log
      archivedLogFilenamePattern: ./logs/openmetadata-%d{yyyy-MM-dd}-%i.log.gz
      archivedFileCount: 7
      timeZone: UTC
      maxFileSize: 50MB

database:
  # the name of the JDBC driver, mysql in our case
  driverClass: com.mysql.cj.jdbc.Driver
  # the username and password
  user: openmetadata_user
  password: openmetadata_password
  # the JDBC URL; the database is called openmetadata_db
  url: jdbc:mysql://localhost/openmetadata_db?useSSL=false&serverTimezone=UTC


elasticsearch:
  host: localhost
  port: 9200

eventHandlerConfiguration:
  eventHandlerClassNames:
    - "org.openmetadata.service.events.AuditEventHandler"

health:
  delayedShutdownHandlerEnabled: true
  shutdownWaitPeriod: 1s
  healthCheckUrlPaths: ["/api/v1/health-check"]
  healthChecks:
    - name: UserDatabaseCheck
      critical: true
      schedule:
        checkInterval: 2500ms
        downtimeInterval: 10s
        failureAttempts: 2
        successAttempts: 1

Server Port

server:
  rootPath: '/api/*'
  applicationConnectors:
    - type: http
      port: 8585
  adminConnectors:
    - type: http
      port: 8586

By default, the Darkseal server runs on port 8585. It uses Jetty Server. The above config can be changed to make it run on a different port. Once you have updated the port details in config restart the server.

Database

Darkseal supports MySQL or Postgres as the database. The database configurations and connection strings must be as specified below.

The section below refers to the database connection details to MySQL database. We recommend you create a MySQL user with a strong password and update this section accordingly.

database:
  # the name of the JDBC driver, mysql in our case
  driverClass: com.mysql.cj.jdbc.Driver
  # the username and password
  user: openmetadata_user
  password: openmetadata_password
  # the JDBC URL; the database is called openmetadata_db
  url: jdbc:mysql://localhost/openmetadata_db?useSSL=false&serverTimezone=UTC

The section below refers to the database connection details to Postgres database. Darkseal uses stored generated columns which is supported in Postgres 12. Ensure that you have Postgres 12 or a later version. We recommend you create a Postgres user with a strong password and update this section accordingly.

database:
  # the name of the JDBC driver, postgres in our case
  driverClass: org.postgresql.Driver
  # the username and password
  user: openmetadata_user
  password: openmetadata_password
  # the JDBC URL; the database is called openmetadata_db
  url: jdbc:postgresql://localhost:5432/openmetadata_db?useSSL=false&serverTimezone=UTC

Elasticsearch

elasticsearch:
  host: localhost
  port: 9200

Elasticsearch is one of the prerequisites to run Darkseal. Default configuration expects a single instance of Elasticsearch running on the local machine. Please make sure you update it with your production elastic search.

Event Handles

eventHandlerConfiguration:
  eventHandlerClassNames:
    - "org.openmetadata.service.events.AuditEventHandler"

EventHandler configuration is optional. It will update the AuditLog in MySQL DB and also ElasticSearch indexes whenever any entity is updated either through UI or API interactions. We recommend you leave it there as it enhances the user experience.

Health Check

health:
  delayedShutdownHandlerEnabled: true
  shutdownWaitPeriod: 1s
  healthCheckUrlPaths: ["/api/v1/health-check"]
  healthChecks:
    - name: UserDatabaseCheck
      critical: true
      schedule:
        checkInterval: 2500ms
        downtimeInterval: 10s
        failureAttempts: 2
        successAttempts: 1

Health check API provides an API endpoint to check the Darkseal server health. We recommend in production settings to use this API to monitor the health of your Darkseal instance. Please tune the above configuration according to your production needs.

Security

Please follow our Enable Security guide to configure security for your Darkseal server.