Solved

Monit problem

Posted on 2008-06-23
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Last Modified: 2010-05-18
I am a newbie in monit. I am not able to receive alerts as well as cannot access web to monitor the failures after installing monit.

Steps that i followed:

1.Installed monit
2 Edited the monitrc as follows

----------------------------------------------------------------------------------------------------
set daemon  120
set logfile syslog facility log_daemon
set mailserver localhost port 25 with timeout 15 seconds  
set mail-format { from: monit@adea-alert.com }
set alert jaisonshereen@gmail.com        
set alert jaisonshereen@gmail.com  only on { timeout }  
set httpd port 2812 and
use address localhost
allow 172.XX.78.99        # allow localhost to connect to the server and
allow admin:monit
check host server1 with address 74.86.138.7
if failed port 80 protocol http then alert

----------------------------------------------------------------------------------------------------


3. save the monitrc
4 Fired the commands : /opt/monit/monit-4.8.1/monit -c /opt/monit/monit-4.8.1/monitrc
5  monit stop all
6  monit start all

I am not getting any alerts in my inbox as well as i not able to access web for monit from http://172.XX.78.99:2812


Kindly help me how i need to proceed with this?


My doubts:

1.Is there any webserver i need to configure apart from monit?

2. Does my entries in monitrc :

This:
------------------------------
set httpd port 2812 and
use address localhost
allow 172.XX.78.99
------------------------

and

This:
-------------------------------------------------
check host server1 with address 74.86.138.7
if failed port 80 protocol http then alert
---------------------------------------------------
are right?


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Question by:jaisonshereen
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9 Comments
 
LVL 14

Expert Comment

by:agriesser
ID: 21853501
use address localhost

means that monit only acceppts connections from localhost, so you have to start a webbrowser on this machine to be able to connect to monit.
If that's not what you want, you should change that line to:

use address 172.XX.78.99

The next thing that got messed up is the access list.
You did only allow the host with it's outside IP to connect to monit whereas you should allow the IP of the client from which you're attempting the connection.

f.ex. if your client has 172.XX.78.100, you should allow it like this:

allow 172.XX.78.100

You can even specify subnets in here, f.ex. to allow all computers in the 172.XX.78 network, use:

allow 172.XX.78.0/255.255.255.0
0
 
LVL 14

Expert Comment

by:agriesser
ID: 21853506
Forgot to mention: You can check what interface monit is listening on with the help of `lsof`:

lsof -n -i :2812
0
 

Author Comment

by:jaisonshereen
ID: 21853934
alert problem is resolved when i fired the command:

sudo monit reload


also,

172.XX.78.99 this is my windows machine where i am trying to connect to the linux server where my monit is running. I hope above what i give is right...

and i will change the address " use address 172.XX.78.99"



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LVL 14

Expert Comment

by:agriesser
ID: 21853976
If .99 is your windows machine, you can't use "use address .99" on the linux machine. If your linux machine f.ex. has 172.XX.78.100, then you should use:

use address 172.XX.78.100
allow 172.XX.78.99
0
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Author Comment

by:jaisonshereen
ID: 21854481
hmm...so "use address localhost"

is not wrong ..right?
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Accepted Solution

by:
agriesser earned 500 total points
ID: 21855144
If you want to bind it to localhost only, no.
But as I said, if it's bound to localhost only, you can only access the webinterface on the localhost.
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Author Comment

by:jaisonshereen
ID: 21858416
yeeeesssssssssssssss its worked ... thanks a ton!!
0
 

Author Closing Comment

by:jaisonshereen
ID: 31470012
Thanks a million TON !! :-)
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LVL 14

Expert Comment

by:agriesser
ID: 21858443
You're welcome :) Good to hear that it works now for you.
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