[feat] Support usage of existing Secret for DB credentials #87
Description
What would you like to be added?
Currently database credentials can be defined by using externalStorage.password, mysql.auth.password and global.postgresql.auth.password. To make usage of clusterpedia secure in GitOps-based setups there should be an option to reference an existing Secret instead of defining the password in the values.yaml.
Why is this needed?
To not expose the DB password when using a GitOps-based approach.