I changed monitrc so that all checks are after 5 cycles and see the same behavior, i.e., there is a cpu usage alert after 5 seconds and every 5 seconds thereafter.
set daemon 5
set logfile syslog
set pidfile /home/jones/monit_code/.monit.pid
set idfile /home/jones/monit_code/.monit.id
set statefile /home/jones/monit_code/.monit.state
check device var with path /var
if space usage > 95% for 5 cycles then alert
check device etc with path /etc
if space usage > 95% for 5 cycles then alert
check system $HOST
if memory usage > 85% for 5 cycles then alert
if cpu usage (user) > 75% for 5 cycles then alert
if cpu usage (system) > 65% for 5 cycles then alert
if cpu > 0% for 5 cycles then alert
Thanks for data.
I think the cpu usage alert was triggered by one of other cpu usage tests, which you have in your monit configuration file:
if cpu usage (user) > 75% for 1 cycles then alert if cpu usage (system) > 65% for 1 cycles then alert if cpu > 0% for 5 cycles then alert
There are three independent tests in the config:
1.) "cpu usage (user)" 2.) "cpu usage (system)" 3.) "cpu"
The CPU test #3 (with no options) will check total CPU usage (usr% + sys% + wait%). Tests #1 test usr% only, and #2 tests sys% only.
Only the check #3 has the 5 cycles constraint, the other will alert during first cycle.
Best regards, Martin
Using the precompiled binary,monit-5.19.0-linux-x86.tar.gz, I see the same behavior.
monitrc is attached.
$ bin/monit -vI -c monitrc
Runtime constants:
Control file = /home/jones/monit519/monitrc
Log file = syslog
Pid file = /home/jones/monit_code/.monit.pid
Id file = /home/jones/monit_code/.monit.id
State file = /home/jones/monit_code/.monit.state
Debug = True
Log = True
Use syslog = True
Is Daemon = True
Use process engine = True
Limits = {
= programOutput: 512 B
= sendExpectBuffer: 256 B
= fileContentBuffer: 512 B
= httpContentBuffer: 1024 kB
= networkTimeout: 5 s
= }
Poll time = 5 seconds with start delay 0 seconds
Start monit httpd = False
The service list contains the following entries:
Filesystem Name = var
Path = /var
Monitoring mode = active
On reboot = start
Filesystem flags = if changed then alert
Space usage limit = if greater than 95.0% then alert
Filesystem Name = etc
Path = /etc
Monitoring mode = active
On reboot = start
Filesystem flags = if changed then alert
Space usage limit = if greater than 95.0% then alert
System Name = localhost.localdomain
Monitoring mode = active
On reboot = start
CPU usage limit = if greater than 0.0% for 5 cycles then alert
CPU system limit = if greater than 65.0% then alert
CPU user limit = if greater than 75.0% then alert
Memory usage limit = if greater than 85.0% then alert
-------------------------------------------------------------------------------
pidfile '/home/jones/monit_code/.monit.pid' does not exist
Starting Monit 5.19.0 daemon
'localhost.localdomain' Monit 5.19.0 started
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage check succeeded [current cpu usage=0.0%]
'localhost.localdomain' cpu system usage check skipped (initializing)
'localhost.localdomain' cpu user usage check skipped (initializing)
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage of 2.4% matches resource limit [cpu usage>0.0%]
'localhost.localdomain' cpu system usage check succeeded [current cpu system usage=0.8%]
'localhost.localdomain' cpu user usage check succeeded [current cpu user usage=1.4%]
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage of 2.0% matches resource limit [cpu usage>0.0%]
'localhost.localdomain' cpu system usage check succeeded [current cpu system usage=0.6%]
'localhost.localdomain' cpu user usage check succeeded [current cpu user usage=1.1%]
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage of 2.0% matches resource limit [cpu usage>0.0%]
'localhost.localdomain' cpu system usage check succeeded [current cpu system usage=0.6%]
'localhost.localdomain' cpu user usage check succeeded [current cpu user usage=0.9%]
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage of 2.4% matches resource limit [cpu usage>0.0%]
'localhost.localdomain' cpu system usage check succeeded [current cpu system usage=0.7%]
'localhost.localdomain' cpu user usage check succeeded [current cpu user usage=1.0%]
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage of 2.0% matches resource limit [cpu usage>0.0%]
'localhost.localdomain' cpu system usage check succeeded [current cpu system usage=0.6%]
'localhost.localdomain' cpu user usage check succeeded [current cpu user usage=1.0%]
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
'var' succeeded getting filesystem statistics for '/var'
'var' filesystem flags has not changed
'var' space usage test succeeded [current space usage=32.2%]
'etc' succeeded getting filesystem statistics for '/etc'
'etc' filesystem flags has not changed
'etc' space usage test succeeded [current space usage=32.2%]
'localhost.localdomain' cpu usage of 2.4% matches resource limit [cpu usage>0.0%]
'localhost.localdomain' cpu system usage check succeeded [current cpu system usage=0.6%]
'localhost.localdomain' cpu user usage check succeeded [current cpu user usage=0.9%]
'localhost.localdomain' mem usage check succeeded [current mem usage=37.8%]
Syslog output.
Oct 10 10:25:32 localhost monit[16217]: Starting Monit 5.19.0 daemon
Oct 10 10:25:32 localhost monit[16217]: 'localhost.localdomain' Monit 5.19.0 started
Oct 10 10:25:37 localhost monit[16217]: 'localhost.localdomain' cpu usage of 2.4% matches resource limit [cpu usage>0.0%]
Oct 10 10:25:42 localhost monit[16217]: 'localhost.localdomain' cpu usage of 2.0% matches resource limit [cpu usage>0.0%]
Oct 10 10:25:47 localhost monit[16217]: 'localhost.localdomain' cpu usage of 2.0% matches resource limit [cpu usage>0.0%]
Oct 10 10:25:52 localhost monit[16217]: 'localhost.localdomain' cpu usage of 2.4% matches resource limit [cpu usage>0.0%]
Oct 10 10:25:57 localhost monit[16217]: 'localhost.localdomain' cpu usage of 2.0% matches resource limit [cpu usage>0.0%]
Oct 10 10:26:03 localhost monit[16217]: 'localhost.localdomain' cpu usage of 2.4% matches resource limit [cpu usage>0.0%]
<monitrc>
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