# cat /etc/resolv.conf
nameserver 192.168.1.1

# hostnamectl set-hostname host.domain
# reboot
# cat /etc/resolv.conf
# Generated by NetworkManager
search domain


# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com