chkservd monitors and restarts services on Cpanel servers. You can enable/disable services to be monitored by going to "Service Configuration" - "Service Manager" in WebHostManager.

Common Error and the Fix

Error

/etc/rc.d/init.d/chkservd restart
Stopping chkservd: [FAILED]
Starting chkservd: Can't locate Net/AIM.pm in @INC (@INC contains: /usr/lib/perl5/5.8.7/i686-linux /usr/lib/perl5/5.8.7 /usr/lib/perl5/site_perl/5.8.7/i686-linux /usr/lib/perl5/site_perl/5.8.7 /usr/lib/perl5/site_perl/5.8.5 /usr/lib/perl5/site_perl/5.8.4 /usr/lib/perl5/site_perl/5.8.3 /usr/lib/perl5/site_perl/5.8.2 /usr/lib/perl5/site_perl/5.8.1 /usr/lib/perl5/site_perl/5.8.0 /usr/lib/perl5/site_perl . /usr/local/cpanel /usr/local/cpanel /scripts /usr/local/cpanel /scripts /usr/local/cpanel /usr/local/cpanel) at /usr/local/cpanel/Cpanel/iContact.pm line 14.
BEGIN failed--compilation aborted at /usr/local/cpanel/Cpanel/iContact.pm line 14.
Compilation failed in require at /usr/local/cpanel/Cpanel/Notify.pm line 14.
BEGIN failed--compilation aborted at /usr/local/cpanel/Cpanel/Notify.pm line 14.
Compilation failed in require at /usr/local/cpanel/libexec/chkservd line 14.
BEGIN failed--compilation aborted at /usr/local/cpanel/libexec/chkservd line 14.
[FAILED]
**********************************
For the above error refer the following link
http://www.eth0.us/net-aim-pm
**************************

solution

perl -MCPAN -e shell
install Bundle::CPAN
reload cpan
install HTTP::Date
install Net::AIM::Connection
install Net::AIM
install Tie::IxHash
install DBI
install DBD::mysql

That should fix you up and let cPanel start to work correctly.