How to manage related applications

Modern mysql_client interface:

Relations to new applications are supported via the “mysql_client” interface. To create a relation:

juju relate mysql-k8s application

To remove a relation:

juju remove-relation mysql-k8s application

Legacy mysql interface:

This charm also supports the legacy relation via the mysql interface. Please note that these interface is deprecated.

juju relate mysql-k8s:mysql wordpress-k8s

Also extended permissions can be requested using mysql-root endpoint:

juju relate mysql-k8s:mysql-root wordpress-k8s

Rotate applications password

To rotate the passwords of users created for related applications, the relation should be removed and related again. That process will generate a new user and password for the application, while retaining the requested database and data.

juju remove-relation application mysql-k8s
juju add-relation application mysql-k8s

Internal operator user

The operator user is used internally by the Charmed MySQL Operator, the set-password action can be used to rotate its password.

• To set a specific password for the operator user

juju run-action mysql-k8s/leader set-password password=<password> --wait

• To randomly generate a password for the operator user

juju run-action mysql-k8s/leader set-password --wait