Since the PING monitor opens files to execute the icmp.exe variable, there is a possibility that up.time will consume all available file handles for its user.
Configuring ulimit settings in newer Linux distributions should be done via the following method to avoid this issue:
Edit the /etc/security/limits.conf file. Add the following line: uptime soft nofiles 4096. Restart uptime_core service.
To verify the number of open files for the Java process on Linux:
# ps -f -u uptime | grep java Get the PID for java and insert below.
# lsof | grep <PID> | wc -l If this is more than the number of files allowed to the user, we could be broken.
# ulimit -n Shows the number of files the user can get (need to be logged in as the up.time user).