Problem:
Every time the foreman-installer command runs it adds “option ntp-servers none;” to /etc/dhcp/dhcpd.conf which results in the warning “dhcpd: none: host unknown” because “none” is obviously not a resolvable host name.
Although “option ntp-servers” awaits a list of IP addresses the ISC DHCP server seems to fallback to name resolution (as per docs https://kb.isc.org/docs/isc-dhcp-44-manual-pages-dhcp-options).
I can’t find an --foreman-proxy-dhcp option to set the ntp-servers option to a value or to disable it. It just defaults to “option ntp-servers none”.
Expected outcome:
Ability to specify a preferred NTP server in the foreman-installer command for this DHCP option or not adding it at all to prevent the ISC DHCP server from regularly logging this warning.
Foreman and Proxy versions:
Foreman: 3.11.2, Proxy: 3.11.5
Distribution and version:
Debian 11.11
Other relevant data:
It can be fixed by a workaround which is just to add the host name “none” to /etc/hosts and in my case just blackhole that to 127.0.0.2.
Our managed hosts use the Debian systemd-timesyncd service rather than the NTP server provided via DHCP option.