Ensure separate partition exists for /var

Information

The /var directory is used by daemons and other system services to temporarily store dynamic data. Some directories created by these processes may be world-writable.

Solution

For new installations, during installation create a custom partition setup and specify a separate partition for /var .
For systems that were previously installed, create a new partition and configure /etc/fstab as appropriate.

See Also

https://www.cisco.com/c/en/us/td/docs/security/firepower/623/configuration/guide/fpmc-config-guide-v623.html