Linux process Monitoring

Linux Process monitoring MonitMonit is a small open source tool to manage and monitor UNIX systems. Monit can automatically maintain the process, to avoid the process of abnormal exit and other problems arising.

• System: Monit can monitor the problem, including process status, System CPU load, memory consumption, etc., such as when the Apache service CPU load and memory lock is too high, it will restart the Apache service.

• Process: Monit can monitor daemon processes, including system processes. For example, when one is down, it automatically resumes restarting the process.

• File system:Monit can monitor changes in local files, directories, and file systems, including timestamps, checksum values, and size changes. For example, you can monitor file SHA1 and MD5 values to monitor whether a file has changed.

• Network:Monit can monitor network connections, support TCP, UDP, Unix domain sockets, and HTTP, SMTP, and so on.

• Timed scripts:Monit can be used to test programs and scripts on a timed basis, obtaining output from the program to determine success or otherwise.

Installation:

sudo apt-get install Monit

To edit a configuration:

sudo vim/etc/monit/monitrc

Start, stop, restart:

sudo/etc/init.d//etc/init.d//etc/init.d/monit Restart

To set the page monitoring status:

and 0.0.0.0/0.0.0.0 allowlocalhost

Increased monitoring:

Note that there is a need to add start and stop, missing one is not possible

1. Monitoring according to the program name

" /home/yxd/test.py "  "xxxxx"

2. According to PID monitoring

Check process Apache with pidfile/var/run/"/etc/init.d/rcwebserver.sh start https"  "/etc/init.d/rcwebserver.sh stop https" if changed PID then Aler 

Reference: Monitoring system critical processes with Monit SupervisordSupervisor is a C/s system that allows users to monitor and control the number of background service processes in a UNIX-like operating system. It is written by Python and is often used for restart protection of process exception exits. Installation:

Pip Install Supervisor

To view the configuration file:

Echo_supervisord_conf

From the results of this command, you can see the configuration information for each module. To create a configuration file:

echo_supervisord_conf >/etc/supervisord.conf

To configure the app:

[Program:test]command=python/root/test_supervisor.pyprocess_name=%(program_name) sstdout_ LogFile=/root/test.logstderr_logfile=/root/test.log

Save, start:

/usr/bin/supervisord-c/etc/supervisord.conf

Reference: Managing Python processes with Supervisord

Linux process Monitoring