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View Helm Chart default values

helm show values dify/dify

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Connect to an external database

You can use PostgreSQL, MySQL, or TiDB as an external database. Below is a generic configuration example for the external database in the updated Helm chart: 
###################################
# External database (Postgres/MySQL/TiDB)
###################################
externalDatabase:
  enabled: false
  # postgres | mysql | tidb
  engine: "postgres"
  host: "localhost"

  # Default ports: postgres=5432, mysql=3306, tidb=4000
  # Note: when switching engine, remember to update port accordingly
  port: 5432

  # Global database credentials (used by default)
  user: "postgres"
  password: "#REPLACE_ME#"

  timezone: "UTC"

  databases:
    dify: "dify"
    plugin_daemon: "dify_plugin_daemon"
    enterprise: "enterprise"
    audit: "audit"

  ###################################
  # Per-database credentials (optional)
  ###################################
  # Configure username and password independently for each database
  # These take precedence over the global user/password
  # If empty, fallback to the global credentials
  databaseCredentials:
    dify:
      user: ""
      password: ""
    enterprise:
      user: ""
      password: ""
    audit:
      user: ""
      password: ""
    plugin_daemon:
      user: ""
      password: ""


  dialectOptions:
    postgres:
      sslMode: "require"
      uriScheme: "postgresql"
      # extras: "options=-c search_path=your-schema -c your-other-option=xxx"
      extras: ""

    mysql:
      # MySQL/TiDB params, e.g. charset=utf8mb4&parseTime=true&loc=UTC
      params: "charset=utf8mb4&parseTime=true&loc=UTC"
      tls: false

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⚠️ Important

Before starting Dify, create the required databases manually:

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Database initialization

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PostgreSQL

CREATE DATABASE dify;
CREATE DATABASE enterprise;
CREATE DATABASE audit;
-- dify_plugin_daemon is created automatically on first startup of the plugin daemon

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MySQL / TiDB

CREATE DATABASE IF NOT EXISTS dify;
CREATE DATABASE IF NOT EXISTS enterprise;
CREATE DATABASE IF NOT EXISTS audit;
-- dify_plugin_daemon is created automatically on first startup of the plugin daemon

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Configuration reference

FieldDescription
engineDatabase engine: postgres / mysql / tidb
databasesMapping of database names used by each component
databaseCredentials(New) Per-database credentials; takes precedence over global credentials
dialectOptions.postgresPostgreSQL-specific options (e.g. sslMode, uriScheme, extras)
dialectOptions.mysqlMySQL/TiDB-specific options (e.g. params, tls)

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Per-database credentials behavior

Precedence: 
databaseCredentials[db] > global user/password
  • If a database has its own credentials configured → use those credentials
  • If empty → fall back to global user/password

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Default ports

EngineDefault port
postgres5432
mysql3306
tidb4000

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Configuration examples

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External PostgreSQL

externalDatabase:
  enabled: true
  engine: "postgres"
  host: "postgres.example.com"
  port: 5432

  user: "postgres"
  password: "******"

  databases:
    dify: "dify"
    plugin_daemon: "dify_plugin_daemon"
    enterprise: "enterprise"
    audit: "audit"

  databaseCredentials:
    dify:
      user: ""
      password: ""
    enterprise:
      user: ""
      password: ""
    audit:
      user: ""
      password: ""
    plugin_daemon:
      user: ""
      password: ""

  dialectOptions:
    postgres:
      sslMode: "require"

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External MySQL

externalDatabase:
  enabled: true
  engine: "mysql"
  host: "mysql.example.com"
  port: 3306

  user: "root"
  password: "******"

  databases:
    dify: "dify"
    plugin_daemon: "dify_plugin_daemon"
    enterprise: "enterprise"
    audit: "audit"

  databaseCredentials:
    dify:
      user: ""
      password: ""
    enterprise:
      user: ""
      password: ""
    audit:
      user: ""
      password: ""
    plugin_daemon:
      user: ""
      password: ""

  dialectOptions:
    mysql:
      params: "charset=utf8mb4&parseTime=true&loc=UTC"

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External TiDB

externalDatabase:
  enabled: true
  engine: "tidb"
  host: "tidb.example.com"
  port: 4000

  user: "root"
  password: "******"

  databases:
    dify: "dify"
    plugin_daemon: "dify_plugin_daemon"
    enterprise: "enterprise"
    audit: "audit"

  databaseCredentials:
    dify:
      user: ""
      password: ""
    enterprise:
      user: ""
      password: ""
    audit:
      user: ""
      password: ""
    plugin_daemon:
      user: ""
      password: ""

  dialectOptions:
    mysql:
      params: "charset=utf8mb4&parseTime=true&loc=UTC"