查看 Helm Chart 默认值
helm show values dify/dify
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
# 3.9.1 起提供；3.9.0 只能使用上方的全局 user/password
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：数据库初始化
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 | （3.9.1 起提供，3.9.0 不支持）每个数据库独立账号配置，优先级高于全局账号 |
| dialectOptions.postgres | PostgreSQL 专用配置（sslMode、uriScheme、extras 等） |
| dialectOptions.mysql | MySQL/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 |
|---|---|
| postgres | 5432 |
| mysql | 3306 |
| tidb | 4000 |
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"