Usually a process will have a limit for how many fd it can open. If the fd count is too many and abnormal, usually it indicates resource leak in code level or a burst of request.
Hence put effective monitoring for fd count of critical processes are important.
Below linux command can find the fd count of a given process use
lsof -p $pid | wc -l
Here comes the plugin in GitHub.Follow @dennyzhang
More Reading:
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Original URL: https://dennyzhang.com/nagois_monitor_process_fd
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