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:
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- Edit the /etc/security/limits.conf file.
- Add the following line: uptime soft nofiles 4096.
- Restart uptime_core service.
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To verify the number of open files for the Java process on Linux:
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# ps -f -u uptime | grep
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java
Get the PID for java and insert below.
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# lsof | grep <PID> | wc
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–l
If this is more than the number of files allowed to the user, we could be broken.
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# ulimit -n
Shows the number of files the user can get (need to be logged in as the up.time user).