net-snmp/net-snmp.logrotate

/var/log/net-snmpd.log {
   compress
   dateext
   maxage 365
   rotate 99
   size=+1024k
   notifempty
   missingok
   create 600 root root
   su root root
   sharedscripts
   postrotate
       /usr/bin/systemctl try-reload-or-restart snmpd.service >/dev/null
       /usr/bin/systemctl try-reload-or-restart snmptrapd.service >/dev/null 	
   endscript

}