Open Source tools to visualise MySQL/MariaDB performance metrics (show global status with interval)

I'm searching for an Open Source tool to visualise MySQL/MariaDB performance metrics (output of show global status in nice graphs). In MongoDB world there is the Closed Source Ops Manager and the Open Source mtools . I'm searching for something similar. In official Oracle training for MySQL 5.6 there are diagrams like While searching the internet I also found some RRDtool based graphs. So my question is how to generate ad hoc nice visualisations from MariaDB performance metrics? Is there some Open Source project which helps in this task? How do other DBAs do this?