Apache log safe to ignore or way to fix this?

[T4B]

installed hestiacp with deb 12 when i check my apache2 log i see this error how can i fix this ?

apache2: Could not reliably determine the server’s fully qualified domain name, using sub.domainname.com. Set the ‘ServerName’ directive globally to suppress this message

[chris]

Are you using the search function on this forum?

Upgrade to Ubuntu 22.04

I fixed this by adding the following to: /etc/apache2/apache2.conf around line 20, just above the <IfModule mpm_prefork_module> block. ServerName host.mydomain.com (This should be ra.domain.com in your case.) Update in /etc/apt/sources.list.d/hestia.list to use jammy instead of focal (This issue has been discussed before in the forum, you can search for it.)