The easy fix probably should be to add ramfs to excludes of modules/mariadb/manifests/monitor_disk.pp but that is a delicate change, as this p@ges on every host- needs proper testing.

To exclude ramfs and tmpfs filesystems when checking MariaDB disk space, you can use the df command with specific options. Here's how to approach this:

Understanding ramfs and tmpfs
ramfs and tmpfs are temporary file systems that store data in RAM. Unlike regular file systems, they don't occupy fixed disk space, making them unsuitable for MariaDB data storage due to data loss upon system reboot ¹.

Checking Disk Space
To check disk space excluding ramfs and tmpfs, you can use the df command with the -x option, which excludes specific filesystem types. Here's an example:
df -x tmpfs -x ramfs

This command will display disk usage statistics for all mounted filesystems except tmpfs and ramfs.

Optimizing MariaDB Disk Space
To optimize MariaDB disk space, consider the following steps ² ³:

• *Optimize InnoDB Log Files*: Adjust the innodb_log_file_size variable to control the size of log files.
• *Run OPTIMIZE TABLE*: Execute OPTIMIZE TABLE commands to reorganize and optimize storage space used by the database.
• *Check for Disk Space Allocation*: Use queries to retrieve disk space allocated by datafiles but not used.

Additional Tips

• Regularly monitor disk space usage to prevent running out of space.
• Consider automating optimization using Cron Jobs.
• Ensure proper configuration of MariaDB to prevent excessive disk space usage ².

Thanks Jaime - I will merge on Monday.

After merging Jaime's patch I think this is done