Radius.Data/mySqlDatabases@2025-08-01-preview
❗️ Preview Release: This documentation covers a preview of Radius which uses different Resource Types from the current release. Enable it by passing the --preview to the Radius CLI or settingRADIUS_PREVIEW=true.
Description
The Radius.Data/mySqlDatabases Resource Type deploys a MySQL database. Provide the administrator username and password directly on the resource. The password property is marked x-radius-sensitive, so Radius encrypts it at rest, redacts it on reads, and exposes it (decrypted) only to the platform-engineer recipe that provisions the database.
resource mysql 'Radius.Data/mySqlDatabases@2025-08-01-preview' = {
name: 'mysql'
properties: {
environment: environment
application: myApplication.id
version: '8.0'
database: 'appdb'
username: 'myadmin'
// From a @secure() password parameter passed in via the CLI
password: password
}
}
When deploying the application definition, provide the database password value as a parameter. It is recommended to use a password generator such as openssl or equivalent. For example, rad deploy app.bicep -p ****** rand -hex 16).
To connect your container to the database, create a connection from the Container resource to the database as shown below.
resource myApplication 'Radius.Core/Applications@2025-08-01-preview' = { ... }
resource frontend 'Radius.Compute/containers@2025-08-01-preview' = {
name: 'frontend'
properties: {
application: myApplication.id
environment: environment
container: {
image: 'frontend:1.25'
ports: {
web: {
containerPort: 8080
}
}
}
connections: {
mysqldb: {
source: database.id
}
}
}
}
The connection automatically injects environment variables into the container for all properties from the database. The environment variables are named CONNECTION_<CONNECTION-NAME>_<PROPERTY-NAME>. In this example, the connection name is mysqldb so the environment variables will be:
- CONNECTION_MYSQLDB_DATABASE
- CONNECTION_MYSQLDB_HOST
- CONNECTION_MYSQLDB_PORT
Top-Level Properties
| Property | Type | Description |
|---|---|---|
application | string | (Optional) The Radius Application ID. myApplication.id for example. |
codeReference | string | Optional URI to the source code of this resource type. ex: https://github.com/radius-project/radius/blob/4fab87e8127adf1db6f43b7029d5235fbe82c5c9/cmd/controller/main.go#L27 |
connections | object | Map of connection name to connection data. |
database | string | (Optional) The name of the database. Defaults to mysql_db if not provided. |
environment | string | (Required) The Radius Environment ID. Typically set by the rad CLI. Typically value should be environment. |
host | string | The host name used to connect to the database. Mapped from the recipe module’s output. |
password | string | (Required) The administrator password for the MySQL database. Marked x-radius-sensitive: Radius encrypts it at rest, redacts it on reads, and exposes it decrypted only to the recipe as {{context.resource.properties.password}}. |
port | integer | The port number used to connect to the database. Mapped from the recipe module’s output (MySQL flexible server uses 3306). |
username | string | (Required) The administrator username for the MySQL database. Provided directly on the resource and passed to the recipe as {{context.resource.properties.username}}. |
version | string | (Optional) The major MySQL server version in the X.Y format. Defaults to 8.4 if not provided.Allowed values: 5.7, 8.0, 8.4. |
Object Properties
connections
| Property | Type | Description |
|---|---|---|
disableDefaultEnvVars | boolean | Disables the automatic injection of environment variables from the connected resource’s properties. |
source | string | Resource ID of the source resource for this connection. |
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