Pete Biggs writes:
On Thu, 2020-08-06 at 10:26 +0100, isdtor wrote:
[root@localhost ~]# lsb_release -d Description: CentOS Linux release 8.2.2004 (Core) [root@localhost ~]# cat /etc/resolv.conf # Generated by NetworkManager search subdomain.company.com company.com nameserver 1.2.3.4 nameserver 5.6.7.8
[root@localhost ~]# host foo foo.subdomain.company.com has address 1.2.3.4
[root@localhost ~]# host foo.subdomain Host foo.subdomain not found: 3(NXDOMAIN)
[root@localhost ~]# host foo.subdomain.company.com foo.subdomain.company.com has address 1.2.3.4 [root@localhost ~]#
The expected result is that the lookup for foo.subdomain works, like it does under CentOS < 8.
man host
-N ndots The number of dots that have to be in name for it to be considered absolute. The default value is that defined using the ndots statement in /etc/resolv.conf, or 1 if no ndots statement is present. Names with fewer dots are interpreted as relative names and will be searched for in the domains listed in the search or domain directive in /etc/resolv.conf.
As per man resolv.conf, the default setting hasn't changed. It is n=1 on all of CentOS 6/7/8.