Hello,
according to PMM user manual a node must be registered to PMM server with ‘pmm-admin config’ command passing in PMM admin user credentials. This password is then being stored on a node in a client config file totally unencrypted.
I find this pretty much insecure, as these admin credentials allow full control of the PMM server, including access to user creation, database nodes managemend and DB query analysis.
How can I create a limited user account with permissions just enough to register a new node and further metrics submission?