The Vault UI only allows MongoDB configuration(plugin dropdown)

I have deployed the vault community version in K8s and while exploring the UI, I observed that the database engine only shows MongoDB plugin and no other database servers.
Also there doesn’t seem to be any method using which plugins can be added.
Although MySQL could be used with the command line by using just the Database engine using “plugin_name=mysql-database-plugin” but it doesn’t allow to create from UI and add ROLES or do other things.
Is the command line the only way to achieve this?

With the release of 1.8.0 MySQL should be available to manage through the UI per the release notes:

Versions prior to 1.8.0 would require configuration via CLI or API.