:~$ sudo service monit restart :~$ netstat -naĪctive Internet connections (servers and established) error : 'ubuntu18niginxmariadb2' loadavg(5min) of 1.9 matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(1min) of 2.1 matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(1min) of 4.3 matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(5min) of 2.1 matches resource limit warning : 'ubuntu18niginxmariadb2' cpu usage of 99.5% matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(1min) of 2.0 matches resource limit warning : 'ubuntu18niginxmariadb2' cpu usage of 50.7% matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(1min) of 1.3 matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(1min) of 4.0 matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(5min) of 1.8 matches resource limit warning : 'ubuntu18niginxmariadb2' cpu usage of 87.7% matches resource limit error : 'ubuntu18niginxmariadb2' loadavg(1min) of 1.0 matches resource limit
info : 'ubuntu18niginxmariadb2' Monit 5.25.1 stopped error : 'ubuntu18niginxmariadb2' loadavg(1min) of 4.1 matches resource limit info : 'ubuntu18niginxmariadb2' exec: '/sbin/shutdown -r now' error : 'ubuntu18niginxmariadb2' loadavg(5min) of 1.6 matches resource limit warning : 'ubuntu18niginxmariadb2' cpu usage of 98.7% matches resource limit info : 'ubuntu18niginxmariadb2' Monit 5.25.1 started Here are some logs when system resource threshold reached, and monit service was triggered: :~$ cat /var/log/monit.log If cpu usage > 75% for 3 cycles then exec " /sbin/shutdown -r now " If cpu usage > 50% for 5 cycles then alert If loadavg (5min) > 1.05 then exec " /sbin/shutdown -r now " Once gauge exceeded, monit will trigger a reboot using command ‘/sbin/shutdown -r now’. Sep 05 18:20:09 ubuntu-min-nginx systemd: Started LSB: service and resource monitoring daemon.Ĭonfigure monit to monitor system load, cpu usage and memory usage. Sep 05 18:20:09 ubuntu-min-nginx monit: * Starting daemon monitor monit Sep 05 18:20:09 ubuntu-min-nginx systemd: Starting LSB: service and resource monitoring daemon. Sep 05 18:20:09 ubuntu-min-nginx systemd: Stopped LSB: service and resource monitoring daemon. └─27911 /usr/bin/monit -c /etc/monit/monitrc Process: 27896 ExecStart=/etc/init.d/monit start (code=exited, status=0/SUCCESS) Process: 27892 ExecStop=/etc/init.d/monit stop (code=exited, status=0/SUCCESS) Loaded: loaded (/etc/init.d/monit generated)Īctive: active (running) since Thu 18:20:09 UTC 26s ago rvice - LSB: service and resource monitoring daemon.:~$ sudo service monit restart :~$ sudo service monit status Processing triggers for systemd (237-3ubuntu10.28). 45688 files and directories currently installed.) Selecting previously unselected package monit. Get:1 bionic/universe amd64 monit amd64 1:5.25.1-1build1 ĭebconf: delaying package configuration, since apt-utils is not installed The following NEW packages will be installed:Ġ upgraded, 1 newly installed, 0 to remove and 0 not upgraded.Īfter this operation, 946 kB of additional disk space will be used. The following package was automatically installed and is no longer required:Įxim4 | postfix | mail-transport-agent sysvinit-core Monit logs to syslog or to its own log file (/var/log/monit.log) and notifies you about error conditions via customisable alert messages. Monit is controlled via an easy to configure control file (/etc/monit/monitrc) based on a free-format, token-oriented syntax. You can use Monit to monitor files, directories and file systems for changes, such as timestamps changes, checksum changes or size changes. Monit can start a process if it does not run, restart a process if it does not respond and stop a process if it uses too much resources. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.
What is Monit? Monit is a utility for managing and monitoring processes, programs, files, directories and file systems on a Unix like system.
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