Case number CPANEL-39912
I'm posting this in hopes that it will help anyone who encounters this issue and possibly avoid some open tickets for cPanel support.
When my servers updated to cPanel 100.0.8 last night, on one of the servers clamd & clamav went down and after trying all of the usual methods (including some from cPanel support articles) I still could not get the services running again. I received these alerts every 5 minutes for hours:
I submitted a ticket to cPanel support and thankfully the Technical Analyst assigned to it was able to provide a workaround for the missing library bug and he published this article - https://support.cpanel.net/hc/en-us...-to-missing-library-after-updating-to-100-0-8
ClamAV and clamd started running again after he ran this workaround command:
Phew! 
I guess this could be marked as solved although technically it is still a bug / case in progress.
I'm posting this in hopes that it will help anyone who encounters this issue and possibly avoid some open tickets for cPanel support.
When my servers updated to cPanel 100.0.8 last night, on one of the servers clamd & clamav went down and after trying all of the usual methods (including some from cPanel support articles) I still could not get the services running again. I received these alerts every 5 minutes for hours:
Code:
Service Check Raw Output (XID 6jq96b) The “clamd” service is down.
The subprocess “/usr/local/cpanel/scripts/restartsrv_clamd” reported error number 255 when it ended.
Startup Log /usr/local/cpanel/3rdparty/bin/clamd: error while loading shared libraries: libjson-c.so.2: cannot open shared object file: No such file or directory
Code:
Notification The service “clamav” appears to be down.
Service Check Method The system’s command to check or to restart this service failed.
ClamAV and clamd started running again after he ran this workaround command:
Code:
yum install json-c -y
I guess this could be marked as solved although technically it is still a bug / case in progress.