Hi,
using Monit 5.15 on FreeBSD 10.2:
<config>
set daemon 5
set logfile syslog
set pidfile /var/run/monit.pid
set idfile /var/.monit.id
set statefile /var/.monit.state
set mailserver localhost
set httpd port 2812 and
use address 192.168.40.72
allow 192.168.20.0/24
allow admin:monit
check process haproxy with pidfile /var/run/haproxy.pid
if failed host 192.168.40.72 port 9090 type tcp
then exec "/bin/sh -c '/bin/echo `/bin/date` >> /tmp/monit.test'"
</config>
When i run monit with -vI and i kill haproxy, i have the following output:
<log>
Adding net allow '192.168.20.0/24'
Adding credentials for user 'admin'
Runtime constants:
Control file = /usr/local/etc/monitrc
Log file = syslog
Pid file = /var/run/monit.pid
Id file = /var/.monit.id
State file = /var/.monit.state
Debug = True
Log = True
Use syslog = True
Is Daemon = True
Use process engine = True
Poll time = 5 seconds with start delay 0 seconds
Expect buffer = 256 bytes
Mail server(s) = localhost:25 with timeout 30 seconds
Mail from = (not defined)
Mail subject = (not defined)
Mail message = (not defined)
Start monit httpd = True
httpd bind address = 192.168.40.72
httpd portnumber = 2812
httpd ssl = Disabled
httpd signature = Enabled
httpd auth. style = Basic Authentication and Host/Net allow list
Alert mail to = address@hidden
Alert on = All events
The service list contains the following entries:
Process Name = haproxy
Pid file = /var/run/haproxy.pid
Monitoring mode = active
Existence = if does not exist then restart
Port = if failed [192.168.40.72]:9090 type TCP/IP protocol DEFAULT with timeout 5 seconds then exec '/bin/sh -c /bin/echo `/bin/date` >> /tmp/monit.test'
System Name = appsrv01
Monitoring mode = active
-------------------------------------------------------------------------------
pidfile '/var/run/monit.pid' does not exist
Starting Monit 5.15 daemon with http interface at [192.168.40.72]:2812
Starting Monit HTTP server at [192.168.40.72]:2812
Monit HTTP server started
'appsrv01' Monit 5.15 started
Sending Monit instance changed notification to address@hidden
'haproxy' process is running with pid 42999
'haproxy' zombie check succeeded
'haproxy' succeeded testing protocol [DEFAULT] at [192.168.40.72]:9090 [TCP/IP]
'haproxy' connection succeeded to [192.168.40.72]:9090 [TCP/IP]
'haproxy' process is running with pid 42999
'haproxy' zombie check succeeded
'haproxy' succeeded testing protocol [DEFAULT] at [192.168.40.72]:9090 [TCP/IP]
'haproxy' connection succeeded to [192.168.40.72]:9090 [TCP/IP]
'haproxy' process is running with pid 42999
'haproxy' zombie check succeeded
'haproxy' succeeded testing protocol [DEFAULT] at [192.168.40.72]:9090 [TCP/IP]
'haproxy' connection succeeded to [192.168.40.72]:9090 [TCP/IP]
'haproxy' process test failed [pid=42999] -- No such process
'haproxy' process is not running
Sending Does not exist notification to address@hidden
'haproxy' trying to restart
'haproxy' stop skipped -- method not defined
'haproxy' start method not defined
'haproxy' monitoring enabled
'haproxy' process test failed [pid=42999] -- No such process
'haproxy' process is not running
'haproxy' trying to restart
'haproxy' stop skipped -- method not defined
'haproxy' start method not defined
'haproxy' monitoring enabled
^CShutting down Monit HTTP server
Monit HTTP server stopped
Monit daemon with pid [48685] stopped
'appsrv01' Monit 5.15 stopped
Sending Monit instance changed notification to address@hidden
</log>
The EXEC Line never gets executed, i dont see any new lines in /tmp/monit.test
If i change the checked Port from 9090 to some invalid port, lets say 9190 and start monit (haproxy is running !), i see:
<log>
Starting Monit 5.15 daemon with http interface at [192.168.40.72]:2812
Starting Monit HTTP server at [192.168.40.72]:2812
Monit HTTP server started
'appsrv01' Monit 5.15 started
Sending Monit instance changed notification to address@hidden
'haproxy' process is running with pid 50703
'haproxy' zombie check succeeded
Socket test failed for [192.168.40.72]:9190 -- Connection refused
'haproxy' failed protocol test [DEFAULT] at [192.168.40.72]:9190 [TCP/IP] -- Connection refused
Sending Connection failed notification to address@hidden
'haproxy' exec: /bin/sh
'haproxy' process is running with pid 50703
'haproxy' zombie check succeeded
Socket test failed for [192.168.40.72]:9190 -- Connection refused
'haproxy' failed protocol test [DEFAULT] at [192.168.40.72]:9190 [TCP/IP] -- Connection refused
'haproxy' exec: /bin/sh
</log>
Why does the EXEC Line works here but not when i kill -9 haproxy ?
What i'm trying to do is get monit to run the exec in case of a haproxy failure.
The exec line will then contain a command to switch the CARP IP to another host.
haproxy itself is monitored using zabbix, so the NOC can investigate the cause of the failure later.
Thanks®ards
gerald