Can't get Monit to work
- by Andrea
I am trying to configure Monit on my local machine to get a taste at how it works, but I have some issues.
What I am trying to do is to get any evidence that Monit is up and running correctly and is actually monitoring something. So my /etc/monit/monitrc looks like
set daemon 60
set logfile /var/log/monit.log
set idfile /var/lib/monit/id
set statefile /var/lib/monit/state
set eventqueue
basedir /var/lib/monit/events
slots 100
set httpd port 2812 and
allow username:password
check process apache2 with pidfile /usr/local/apache/logs/apache2.pid
start program = "/etc/init.d/apache2 start"
stop program = "/etc/init.d/apache2 stop"
if failed port 6543 protocol http then exec "/usr/bin/touch /tmp/monit"
If I understand correctly, since apache does not listen on port 6543 (it is just a random number) I should get an error, and as a consequence the file /tmp/monit should be created. So I start monit by
sudo service monit start
sudo monit monitor apache2
Unfortunately no such file is created. Instead the web console shows an error for apache - execution failed. The log says 'apache2' failed to start.
What am I doing wrong?
EDIT As suggested in the comments, I ran monit in verbose mode, by
monit -vv monitor apache2
(the exact command suggested in the comments failed). The output is
Runtime constants:
Control file = /etc/monit/monitrc
Log file = /var/log/monit.log
Pid file = /var/run/monit.pid
Debug = True
Log = True
Use syslog = False
Is Daemon = True
Use process engine = True
Poll time = 60 seconds with start delay 0 seconds
Expect buffer = 256 bytes
Event queue = base directory /var/lib/monit/events with 100 slots
Mail from = (not defined)
Mail subject = (not defined)
Mail message = (not defined)
Start monit httpd = True
httpd bind address = Any/All
httpd portnumber = 2812
httpd signature = True
Use ssl encryption = False
httpd auth. style = Basic Authentication
The service list contains the following entries:
Process Name = apache2
Pid file = /usr/local/apache/logs/apache2.pid
Monitoring mode = active
Start program = '/etc/init.d/apache2 start' timeout 30 second(s)
Stop program = '/etc/init.d/apache2 stop' timeout 30 second(s)
Existence = if does not exist 1 times within 1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s) then alert
Pid = if changed 1 times within 1 cycle(s) then alert
Ppid = if changed 1 times within 1 cycle(s) then alert
Port = if failed localhost:6543 [HTTP via TCP] with timeout 5 seconds 1 times within 1 cycle(s) then exec '/usr/bin/touch /tmp/prova-monit' timeout 0 cycle(s) else if succeeded 1 times within 1 cycle(s) then alert
System Name = system_andrea-Vostro-420-Series
Monitoring mode = active
