跳转到主要内容

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查看 Helm Chart 默认值

helm show values dify/dify

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连接外部数据库

支持连接 PostgreSQL、MySQL 或 TiDB 作为外部数据库。 以下是新版 Helm Chart 中外部数据库的通用配置示例： 
###################################
# 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

  # 全局数据库账号（默认使用）
  user: "postgres"
  password: "#REPLACE_ME#"

  timezone: "UTC"

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

  ###################################
  # Per-database credentials（可选）
  ###################################
  # 用于为每个数据库单独配置账号密码
  # 优先级高于全局 user/password
  # 如果为空，则回退使用全局账号
  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

​
⚠️ 重要说明

在启动 Dify 之前，你需要手动创建所需数据库：

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数据库初始化

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PostgreSQL

CREATE DATABASE dify;
CREATE DATABASE enterprise;
CREATE DATABASE audit;
-- dify_plugin_daemon 会在插件守护进程首次启动时自动创建

​
MySQL / TiDB

CREATE DATABASE IF NOT EXISTS dify;
CREATE DATABASE IF NOT EXISTS enterprise;
CREATE DATABASE IF NOT EXISTS audit;
-- dify_plugin_daemon 会在插件守护进程首次启动时自动创建

​
配置说明

字段说明
engine数据库类型：postgres / mysql / tidb
databases各组件使用的数据库名称映射
databaseCredentials（新增）每个数据库独立账号配置，优先级高于全局账号
dialectOptions.postgresPostgreSQL 专用配置（sslMode、uriScheme、extras 等）
dialectOptions.mysqlMySQL/TiDB 专用配置（params、tls 等）

​
Per-DB Credentials 行为说明

优先级规则： 
databaseCredentials[db] > global user/password
  • 若某个数据库配置了独立账号 → 使用该账号
  • 若为空 → 回退使用全局 user/password

​
默认端口

Engine默认端口
postgres5432
mysql3306
tidb4000

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配置示例

​
PostgreSQL（外部）

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"

​
MySQL（外部）

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"

​
TiDB（外部）

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"