@CaygriWEB and @ServerHealers
The chkservd process attempts to connect to 127.0.0.1:80†in order to validate that this service is functioning. If you blocked connections with iptables or the Host Access Control†interface in WHM, this failure may be a false positive.
To resolve this issue, either open the firewall to allow connections as the root user to 127.0.0.1:80†or disable checks for this service in WHM's Service Manager†interface with the Configure Monitor Settings†link below.
Configure Monitor Settings:
https://server.example.com:2087/scripts/srvmng#service-chkservd
Configure chkservd:
https://server.example.com:2087/scripts2/tweaksettings?find=chkservd
Disable HTML notifications:
https://server.example.com:2087/scripts2/tweaksettings?find=chkservd_plaintext_notify
