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Defining new nagios service
Posted: Mon Jul 07, 2014 11:52 am
by i386
Hello All
I am new to Nagios. I recently installed it. I currently have the nagios host running. It is monitoring one client server using the Nagios Remote Plugin Executor (nrpe).
I hope that someone can help me, as assistance would be greatly appreciated.
I am trying to define a new service to monitor the root hard disk.
I currently have the following.
Code: Select all
define service {
use generic-service
host_name nagc1
service_description disk
command_name check_disk
command_line /usr/lib64/nagios/plugins/check_disk -v / -c 5 -w 7
}
for some reason this does not seem to be working. I cant seem to understand why. This service definition is a copy of another service definition which is working fine.
when I try and restart the nagios service I get the following error:
Code: Select all
[root@nagios1 servers]# service nagios start
Starting nagios:CONFIG ERROR! Start aborted. Check your Nagios configuration.
I have also tried to run a sanity check.
Code: Select all
[root@nagios1 servers]# nagios -v clientone.cfg
Nagios Core 3.5.1
Copyright (c) 2009-2011 Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 08-30-2013
License: GPL
Website: http://www.nagios.org
Reading configuration data...
Error in configuration file '/etc/nagios/servers/clientone.cfg' - Line 1 (NULL value)
Error processing main config file!
***> The name of the main configuration file looks suspicious...
Make sure you are specifying the name of the MAIN configuration file on
the command line and not the name of another configuration file. The
main configuration file is typically '/usr/local/nagios/etc/nagios.cfg'
***> One or more problems was encountered while processing the config files...
Check your configuration file(s) to ensure that they contain valid
directives and data defintions. If you are upgrading from a previous
version of Nagios, you should be aware that some variables/definitions
may have been removed or modified in this version. Make sure to read
the HTML documentation regarding the config files, as well as the
'Whats New' section to find out what has changed.
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 12:03 pm
by eloyd
Error in configuration file '/etc/nagios/servers/clientone.cfg' - Line 1 (NULL value)
This is your problem. You may have a character in this file in line one that doesn't display on your screen that is causing the Nagios processor to not be able to read the file properly. Try deleting line one and see what happens (assuming line one is empty).
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 12:15 pm
by tmcdonald
This is often seen when copying a file from a Windows environment. Can you post the /etc/nagios/servers/clientone.cfg file please?
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 12:20 pm
by i386
eloyd wrote:Error in configuration file '/etc/nagios/servers/clientone.cfg' - Line 1 (NULL value)
This is your problem. You may have a character in this file in line one that doesn't display on your screen that is causing the Nagios processor to not be able to read the file properly. Try deleting line one and see what happens (assuming line one is empty).
Hi
First off Thank you for your help!!!!
I would like to believe that is the problem. However the configuration file is fine if I comment out the new service definition.
besides, I did go down that road, but was not able to see this 'character' thats being complained about.
Code: Select all
[root@nagios1 servers]# cat -n clientone.cfg
1 define host {
2 use linux-server
3 host_name nagc1
4 alias nagc1
5 address 192.168.1.107
6 # hostgroups allhosts
7 }
8
9 define service {
10 use generic-service
11 host_name nagc1
12 service_description PING
13 check_command check_ping!100.0,20%!500.0,60%
14 normal_check_interval 10
15 retry_check_interval 1
16 }
17
18 define service {
19 use generic-service
20 host_name nagc1
21 service_description SSH
22 check_command check_ssh
23 notifications_enabled 0
24 }
25
26 define service {
27 use generic-service
28 host_name nagc1
29 service_description Current Load
30 check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
31 }
32
33 define service {
34 use generic-service
35 host_name nagc1
36 service_description disk
37 command_name check_disk
38 # command_line /usr/lib64/nagios/plugins/check_disk -v / -c 5 -w 7
39 }
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 12:30 pm
by eloyd
Does Trevor's comment shed any light?
This is often seen when copying a file from a Windows environment
If it were me, I'd delete lines 1-8 and recreate them by manually typing the information back in.
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 2:03 pm
by i386
tmcdonald wrote:This is often seen when copying a file from a Windows environment. Can you post the /etc/nagios/servers/clientone.cfg file please?
Code: Select all
[root@nagios1 servers]# cat -n clientone.cfg
1 define host {
2 use linux-server
3 host_name nagc1
4 alias nagc1
5 address 192.168.1.107
6 # hostgroups allhosts
7 }
8
9 define service {
10 use generic-service
11 host_name nagc1
12 service_description PING
13 check_command check_ping!100.0,20%!500.0,60%
14 normal_check_interval 10
15 retry_check_interval 1
16 }
17
18 define service {
19 use generic-service
20 host_name nagc1
21 service_description SSH
22 check_command check_ssh
23 notifications_enabled 0
24 }
25
26 define service {
27 use generic-service
28 host_name nagc1
29 service_description Current Load
30 check_command check_local_load!5.0,4.0,3.0!10.0,6.0,4.0
31 }
32
33 define service {
34 use generic-service
35 host_name nagc1
36 service_description disk
37 command_name check_disk
38 # command_line /usr/lib64/nagios/plugins/check_disk -v / -c 5 -w 7
39 }
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 2:09 pm
by i386
eloyd wrote:Does Trevor's comment shed any light?
This is often seen when copying a file from a Windows environment
If it were me, I'd delete lines 1-8 and recreate them by manually typing the information back in.
You know? I did copy the original code from a web site. Then I modified it with my server details.
I will delete lines 1 - 8, and type them in manually.
...However, that does not explain why it works when I comment out the new definitions.
let me ask another question.
can some one post the service definitions akd "define service" for the root(/) hard disk check on a nrpe client?
I have the following, but I want to be sure its correct:
Code: Select all
33 define service {
34 use generic-service
35 host_name nagc1
36 service_description disk
37 command_name check_disk
38 command_line /usr/lib64/nagios/plugins/check_disk -v / -c 5 -w 7
39 }
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 2:15 pm
by eloyd
...However, that does not explain why it works when I comment out the new definitions.
If you're commenting out a line that has a non-printable character in it, then that does explain it.
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 2:18 pm
by eloyd
I have the following, but I want to be sure its correct:
Nope. You can't have a "command_line" in a service check.
- The service check definition uses "check_command" to specify the command and arguments.
"check_command" is defined in commands.cfg
The commands.cfg has a list of what FILE to execute when the COMMAND is given, and passes the ARGUMENTS to it.
You will want to look at
http://nagios.sourceforge.net/docs/3_0/ ... ml#service for details.
Re: Defining new nagios service
Posted: Mon Jul 07, 2014 2:19 pm
by i386
i386 wrote:eloyd wrote:Does Trevor's comment shed any light?
This is often seen when copying a file from a Windows environment
If it were me, I'd delete lines 1-8 and recreate them by manually typing the information back in.
You know? I did copy the original code from a web site. Then I modified it with my server details.
I will delete lines 1 - 8, and type them in manually.
...However, that does not explain why it works when I comment out the new definitions.
let me ask another question.
can some one post the service definitions akd "define service" for the root(/) hard disk check on a nrpe client?
I have the following, but I want to be sure its correct:
Code: Select all
33 define service {
34 use generic-service
35 host_name nagc1
36 service_description disk
37 command_name check_disk
38 command_line /usr/lib64/nagios/plugins/check_disk -v / -c 5 -w 7
39 }
Okay, Ive deleted lines 1-8 and manaually entered them. Now its complaining about line 2. Go figure.
Code: Select all
[root@nagios1 servers]# nagios -v clientone.cfg
Nagios Core 3.5.1
Copyright (c) 2009-2011 Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 08-30-2013
License: GPL
Website: http://www.nagios.org
Reading configuration data...
Error in configuration file '/etc/nagios/servers/clientone.cfg' - Line 2 (NULL value)
Error processing main config file!
***> The name of the main configuration file looks suspicious...
Make sure you are specifying the name of the MAIN configuration file on
the command line and not the name of another configuration file. The
main configuration file is typically '/usr/local/nagios/etc/nagios.cfg'
***> One or more problems was encountered while processing the config files...
Check your configuration file(s) to ensure that they contain valid
directives and data defintions. If you are upgrading from a previous
version of Nagios, you should be aware that some variables/definitions
may have been removed or modified in this version. Make sure to read
the HTML documentation regarding the config files, as well as the
'Whats New' section to find out what has changed.
[root@nagios1 servers]# cat -n clientone.cfg
1
2 define host {
3 use linux-server
4 host_name nagc1
5 alias nagc1
6 address 192.168.1.107
7 }
8