questions to ask regarding nagios

s0tGaL · 07-29-2010, 08:22 AM

Hello everyone.

I have a few questions to ask, so please pardon me

1) How to check for https in commands config file for Nagios? I only know how to check for http, not sure for https.

2) The log file in Nagios, is it possible to extend Nagios's plugins (or are there already have plugins existed) so that we could actually make use of the log file to check for status of each and every services in different hosts, instead of looking through the log file manually which can be very time-consuming if the list is very long.

Very sorry if the questions posted are stupid, i am a new Nagios user so wanting to know more.

[FYI: i'm using ubuntu to install Nagios]

Thank you and have a nice day.

sem007 · 07-29-2010, 09:48 AM

Quote:

1) How to check for https in commands config file for Nagios? I only know how to check for http, not sure for https.

user port number with check_http

/usr/local/nagios/libexec/check_http -H ipaddress -p 443

Quote:

2) The log file in Nagios, is it possible to extend Nagios's plugins (or are there already have plugins existed) so that we could actually make use of the log file to check for status of each and every services in different hosts, instead of looking through the log file manually which can be very time-consuming if the list is very long.

sorry but I am not understand you question.

s0tGaL · 07-29-2010, 09:58 AM

Quote:

Originally Posted by sem007

user port number with check_http

/usr/local/nagios/libexec/check_http -H ipaddress -p 443

Oh i see. thanks =)

Quote:

Originally Posted by sem007

sorry but I am not understand you question.

What i mean is, you know in Nagios there is a log file right? So i want to know if currently there is any Nagios plugins that enable one to actually 'read' the log file instead of looking through the log file manually. Because in the log file there are a lot of service status for different servers that we are monitoring, so it will be good if there is any Nagios plugins that i could make use of to read the log file.

sem007 · 07-29-2010, 10:50 AM

Quote:

Originally Posted by s0tGaL

Oh i see. thanks =)

What i mean is, you know in Nagios there is a log file right? So i want to know if currently there is any Nagios plugins that enable one to actually 'read' the log file instead of looking through the log file manually. Because in the log file there are a lot of service status for different servers that we are monitoring, so it will be good if there is any Nagios plugins that i could make use of to read the log file.

You really not require to monitor log file. because nagios have web page and you can monitor hosts and services status through that.

web page display same status as log file so you really not require the same.

HTH

s0tGaL · 07-29-2010, 07:35 PM

I do know about that, but i'm required to monitor log file for a purpose. That's why i'm asking on this

s0tGaL · 07-29-2010, 08:25 PM

Hey sem007,

just to confirm, is this correct?:

Code:

define command{
        command_name    check_https
        command_line    $USER1$/check_https -I $HOSTADDRESS$ $ARG1$ -p 443
        }

thanks again.

sem007 · 07-30-2010, 03:16 AM

Do not assign -p in commnads.cfg file

Code:

define command{
        command_name    check_https
        command_line    $USER1$/check_https -I $HOSTADDRESS$ $ARG1$
        }

define port in host's service file
exa

Code:

check_command                   check_http!443

sem007 · 07-30-2010, 03:33 AM

if you compile nagios-plugin with --with-openssl option then you can verify ssl connection of http server and you can create new command entry for HTTPS like

Code:

# 'check_https' command definition
define command{
        command_name    check_https
        command_line    $USER1$/check_http --ssl -H $HOSTADDRESS$
        }

I hope this will help you..

s0tGaL · 07-30-2010, 04:23 AM

Quote:

Originally Posted by sem007

if you compile nagios-plugin with --with-openssl option then you can verify ssl connection of http server and you can create new command entry for HTTPS like

Code:

# 'check_https' command definition
define command{
        command_name    check_https
        command_line    $USER1$/check_http --ssl -H $HOSTADDRESS$
        }

I hope this will help you..

i don't really understand this part sorry.

And i changed according in windows.cfg:

Code:

define service{
        use                     generic-service
        host_name               remotehost
        service_description     HTTPS
        check_command           check_http!443
       }

right? just want to confirm (:

for some windows servers that i'm monitoring, i got 'Connection refused' and 'CRITICAL - Socket timeout after 10 seconds' Hmm.

i did open port 443 in windows firewall to allow HTTPS, maybe why it still can't connect.

sem007 · 07-30-2010, 04:39 AM

Quote:

Quote:
Originally Posted by sem007 View Post
if you compile nagios-plugin with --with-openssl option then you can verify ssl connection of http server and you can create new command entry for HTTPS like

Code:

# 'check_https' command definition
define command{
command_name check_https
command_line $USER1$/check_http --ssl -H $HOSTADDRESS$
}

I hope this will help you..
i don't really understand this part sorry.

--ssl or -S option will Connect via SSL. Port defaults to 443
for that you have to compile nagios-plugin with --with-openssl option.

check_http --help to verify options.

read nagios-user mailing list

s0tGaL · 07-30-2010, 06:22 AM

Oh okay. So for HTTPS i have to connect via SSL first?

so i have to write this for commands:

Code:

# 'check_https' command definition
define command{
        command_name    check_https
        command_line    $USER1$/check_http --ssl -H $HOSTADDRESS$
        }

instead of this which i wrote earlier:

Code:

define command{
        command_name    check_https
        command_line    $USER1$/check_https -I $HOSTADDRESS$ $ARG1$
        }

thanks again