MySQL
Coolify deploys MySQL as a standalone container on the selected server and destination. A new resource gets generated root and application-user passwords, a persistent data volume, an internal connection URL, and a health check.
MySQL is an open-source relational database used by applications that need SQL storage and transactions.
Create a MySQL database
Open New Resource
Open the project and environment where the database should live, then select New Resource.
Select MySQL
Under Databases, select MySQL. You can also search for MySQL by name.
Select a server
Select the server that should run MySQL. Build servers cannot be selected because they do not host running database resources.
Select a destination
Select the Docker network destination that MySQL should join.
Review the generated configuration
Coolify creates the resource and opens Configuration > General. Review the image, root password, normal username and password, initial database, and connection URLs. Keep the default private networking unless an external client requires access.
Start MySQL
Select Start and follow the startup output. Wait until MySQL is running and healthy, then copy the Internal URL into applications on the same destination network.
Default configuration
| Setting | Default or behavior |
|---|---|
| Internal port | 3306 |
| Default image | mysql:8 |
| Normal user | mysql |
| Initial database | default |
| Data mount | /var/lib/mysql |
| Scheduled backups | Supported |
| SSL | Supported with MySQL SSL modes |
The root password and normal-user password are generated when the resource is created. If you change credentials or the initial database inside MySQL, update the matching values in Configuration > General so connection URLs and automated backups use the current values.
Connect to MySQL
Use the Internal URL for an application on the same Coolify destination network:
mysql://<user>:<password>@<database-container>:3306/<database>When Make it publicly available is enabled, Coolify shows a Public URL using the server address and Public Port. Keep MySQL private unless an external client requires direct access.
Read Databases for port mappings, the public TCP proxy, and firewall considerations.
Configure MySQL
Open Configuration > General to change the image, credentials, Ports Mappings, public proxy, custom Docker options, and Custom Mysql Configuration. Coolify mounts the custom configuration into the MySQL container and recreates the generated configuration when you restart the resource.
Use the image version that matches your application and backup/restore tooling. Test major-version changes against a copy of the data before applying them to production.
Back up and restore MySQL
Coolify uses mysqldump for scheduled backups. Selected databases are dumped directly; Backup All Databases creates a gzip-compressed all-database dump. Multiple selected database names are comma-separated.
Configure schedules, retention, and S3 storage under Database backups. The built-in Import Backup form accepts MySQL backups while the database is running; follow Restore a database for the import workflow.
Stop application writes and verify the target resource before confirming an import. Keep a separate copy of any data that must not be replaced.
SSL and health checks
MySQL supports Prefer, Require, Verify CA, and Verify Full. The verification modes require the client to trust the Coolify CA certificate. See Database SSL.
Configure the Docker health check under Configuration > Healthcheck and restart MySQL after saving.