WHM/CPanel check_unreliable_resolvers
Maintenance ended; however, it did not exit cleanly (256) - Partial DNS resolver failure
nameserver entry in resolve.conf resetting after restarting network services?
DNS Resolver Failure Notification IPV6? - File /etc/resolv.conf deleted on every reboot, why or what?
/etc/resolv.conf overwritten in CentOS 7 - resolv.conf keeps getting reset by something
Timeout 2001:4860:4860::8888



:

update update
Maintenance ended; however, it did not exit cleanly (256)
DNS

:



DNS Google
DNS

:
nameserver 8.8.8.8
nameserver 8.8.4.4
:
dhclient dhcp



:

In CentOS 7 you will often find /etc/resolv.conf overwritten after each reboot or network service restart. Its done the NetworkManager. If you check your resolv.conf after reboot you will see that your changes are gone
using your preferred command-line text editor (for example, vi, vim, nano



:
nano /etc/sysconfig/network-scripts/ifcfg-eth1
0 name server





: Dns1 Dns2 Dns3

4.2.2.2 .

dhcp name servers



:
nano /etc/resolv.conf

:
https://support.cpanel.net/hc/en-us/...via-WHM-or-SSH
https://unix.stackexchange.com/quest...ting-network-s
https://forums.cpanel.net/threads/ot...ervers.619975/
https://forums.cpanel.net/threads/re...etting.588027/
https://forums.cpanel.net/threads/ma...ly-256.640005/
https://support.cpanel.net/hc/en-us/...-when-it-ended
https://www.quora.com/What-is-a-4-2-2-2-DNS
https://docs.cpanel.net/whm/networki...configuration/