Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes.

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2answers
84 views

Monitoring PSUs with local IPMI and Nagios

I'd like to use Nagios to monitor the redundant PSUs in my servers (running Debian Wheezy). I've run the sensors-detect script in the lm-sensors package, and the only thing it can find is Driver ...
-3
votes
2answers
247 views

Truncating return data as it is bigger then NRPE allows

I'm using latest NSCLIENT on a Win Server 2012, and see: Truncating return data as it is bigger then NRPE allows in the log file. How can I fix this?
5
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5answers
27k views

How can I manually run a nagios check from the command line?

When defining and testing new services in nagios I have been restarting nagios, then clicking the service, and rescheduling a check for as soon as possible, then waiting until the check happens. Is ...
4
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2answers
726 views

nagios contact groups to check_mk

I have Nagios installed with traditional configuration files. I have created some contact groups and assigned them to hosts. For web UI I'm using check_mk. And here's the question: Check_mk supports ...
0
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1answer
102 views

Multiple monitoring machines for the same hosts

I'm fairly new to monitoring and am currently trying to setup a monitoring solution for our network infrastructure. Our hardware is pretty old and can therefore fail at any time. We have taken ...
0
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1answer
567 views

NSClient seems to be ignoring allow_nasty_meta_chars setting

I am trying to detect an eventlog entry on a server, so am trying to use the CheckEventLog command: ./check_nrpe -H hostname -c CheckEventLog -a MaxWarn=1 MaxCrit=1 "filter=generated gt -3d AND id=23 ...
1
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2answers
776 views

Nagios admin doesn't have permission

I have installed and configured nagios on CentOS using yum I get "It appears as though you do not have permission to view information for any of the hosts you requested..." on the web interface. I ...
0
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0answers
35 views

Nagios XI- Different Access Permissions to Different Users

I am having 22 Linux servers configured and being monitored in Nagios XI. I have created a user, apart from nagiosadmin (the admin user), to whom I have to give access to only 4 servers, so that he ...
3
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3answers
561 views

Nagios Hardening

I've been trying to look into hardening Nagios (if there is such a thing...), but haven't found anything too definitive on what to do or guidance on what to even look at. I'm wary to keep Nagios ...
4
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3answers
11k views

Nagios: Disable notifications from command line on Windows/Linux

Our routine maintenance requires services have to be brought down. The problem is these services have Nagios checks and we either have to go to the web interface and disable the check or get the ...
0
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1answer
367 views

check_mysql_query cannot connect to mysql, but works from the command line

I have Nagios 3 running on Debian Wheezy. I am able to run the query the following query from the command line. The credentials for the mysql db are stored in ~nagios/.my.cnf nagios@intranet:~$ ...
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2answers
289 views

Is it reasonable to use Nagios to check that a service is NOT available?

Suppose I have a server with a private interface and a public interface. Public might have things like HTTP(S) servers, private might have MySQL and SSH. Obviously Nagios is useful to check that the ...
0
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1answer
165 views

Use Nagios hostgroups in check_cluster --service check?

Is there a way to use hostgroups within a check_cluster --service check? I've only seen examples that list out each host in the cluster individually like this: define service{ ... ...
5
votes
1answer
297 views

Nagios escalations, prematurely critical escalation after warning

In Nagios 3, I would like a service to be escalated after being critical XX minutes. It works great on services that go from UP to CRITICAL. However, if the service has been warning >XX minutes (say ...
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1answer
1k views

Nagios CHECK_NRPE: Error receiving data from daemon. RHEL 6

So I'm trying to set up a Nagios check_load service on a Red Hat server. I followed the documentation from Red Hat to install the NRPE client: ...
2
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1answer
238 views

Redundant monitoring with Nagios

I am working with Nagios 4.0.7 on two servers to monitor my network. Recently I developed the third one in order to have more redundancy so I start reading information about failover redundancy mostly ...
0
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1answer
91 views

Nagios: Specify a contact group for a whole host group?

I'm migrating a config from a very old version of Nagios (1.5 something I think) to Nagios 3.5.1. The config I'm moving has contact groups specified for the host groups. The new Nagios says Error: ...
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1answer
64 views

Monitoring root certificate

For enterprise wide systems wherein SSL certs are utilized, what is the best way of monitoring root CAs or intermediate CAs? If the systems were on Linux OS. Are there nagios checks that can catch ...
2
votes
1answer
184 views

Why isn't snmptt translating this trap?

I have a device that is sending snmp v1 traps and snmptt cannot translate them. To grab a copy of the trap, I stopped the snmptt service, and copied the trap to /tmp. The OID I'm trying to trigger ...
1
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1answer
188 views

Nagios plugin check_snmp_int does not match regular expression

I am using nagios plugin check_snmp_int with -n switch. Help show: -n, --name=NAME Name in description OID (eth0, ppp0 ...). This is treated as a regexp : -n eth will match eth0,eth1,... ...
2
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2answers
2k views

Allowing nagios plugin check_dhcp to work without setuid root

Nagios has a plugin, check_dhcp, that does exactly what you'd think. It's widely suggested to install it setuid root, because it uses SO_BINDTODEVICE, which usually only root can do. Of course a ...
0
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2answers
91 views

What is the default location to store nagios snmp user variables?

I'm taking over a nagios server and trying to figure out where the previous admin kept his snmpv3 user and password variables, would anyone have a clue where the standard location for this is?
0
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1answer
305 views

check_http!--ssl actually checks http

When monitoring the SSL service on a host that runs HTTPS but not HTTP, Icinga warns about a 403 Forbidden return code. But that warning is for HTTP, not HTTPS. Manually running the check_http ...
-1
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1answer
280 views

Nagios Schedule a Check on Command Line

I use Nagios Core 3.5.1. In order to skip the HTTP authentication (guest user without password could also be tedious), I turn off the Nagios authentication based on this article. (even though turning ...
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3answers
229 views

Installing check_logfiles Nagios plugin [closed]

i want to install the check_logfiles Nagios plugin. The installation step says that After unpacking the tar-archive you have to call ./configure. With ./configure --help you can show the options ...
0
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1answer
3k views

check_http --ssl still checking HTTP

Shouldn't the following command return an HTTPS/SSL status code? $ check_http --ssl google.de HTTP OK: HTTP/1.0 302 Found - 984 bytes in 0,099 second response time |time=0,099305s;;;0,000000 ...
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0answers
30 views

How to monitor primary and backup nodes

Currently we are running Nagios 3 on Linux which monitors Node-A (Primary) . As part of a new requirement (Geo-cluster support), we introduced a Backup Node (Node-B) for above primary node so that ...
-2
votes
1answer
443 views

Nagios/Gammu, nagios user can't send sms

I have a Nagios, and Gammu installed. When I use gammu as root, like the following : /usr/bin/gammu identify (or else) It works, but when I do it as nagios user, i got this answer : Can't open ...
0
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1answer
59 views

icinga nrpe executes locally instead of server

I am very new to icinga. In fact I finished setting it up today. I am trying to monitor a bunch of stuff on my nrpe machines. I set up my services in /etc/icinga/objects/my.server.com.cfg and ...
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0answers
83 views

icinga-web not updating icinga status properly

I have a problem similar to this one... if you look at the photo there, you'll see that the icinga server is marked as down. I checked everything according to the answer given there, but it has ...
1
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0answers
171 views

Nagios 3.5 can't send notification email despite nagios logs ok / centos6

I spent hours trying to make nagios send email notification. my contact configuration is quite simple : I juste have one : nagiosadmin, and he is the default contact. In /var/log/nagios.log, nagios ...
1
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1answer
3k views

Nagios interval_length and check_interval

I am getting a little confused with Nagios timers. Whilst testing, I set a failure that was not picked up for around 5 minutes. I am not much more than pings and http checks and I really want to step ...
2
votes
1answer
2k views

Where are Nagios Availability-Report files stored?

How to access Nagios Availability-Report files to retrieve "UP Time Percent" and so other information about Hosts and Services? I know It can be accessed through Nagios CGI but I want to use it on a ...
1
vote
1answer
94 views

Nagios check fails: UWSGI CRITICAL: could not connect() to workers Operation now in progress

All seems to be installed and work as it should (site/server is running) but keep getting this error: UWSGI CRITICAL: could not connect() to workers Operation now in progress when running: uwsgi ...
1
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2answers
4k views

Nagios NRPE “No Output returned from plugin“ error

So I've just started configuring Nagios in my environment and I'm getting the above error when trying to user the NRPE plugin. The host file is as follows: define { host_name servername ...
2
votes
1answer
289 views

How to test nagios send_nsca with netcat

I am trying to write a unit test of send_nsca using nc but it is failing. I want to start nc to listen to the nsca port and then use send_ncsa to send a message to that port. In one terminal I am ...
0
votes
1answer
532 views

NSClient++: Invalid return code -1073741502

I got a problem with NSClient++ (version 0.3.8.76). I set up an external script handler, and it was working. But since some time it returns this, everytime i run the check: No output available from ...
4
votes
1answer
197 views

Custom nagios command, append $HOSTADDRESS$

I'm very new to nagios, and trying to get a custom command to bend to my will. I have looked through various examples, and can't find anyone appending the $HOSTADDRESS$ macro, so maybe I have to go ...
0
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1answer
1k views

NSCA does not recieve pasive checks

NSCA seems to register the connection, as seems in the syslog, but for an unknow reason (at least for me) does not write it to icinga.cmd, or at least, read it. this is the syslog. Jun 27 ...
0
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0answers
189 views

'check_tomcat.pl' plugin returning CRITICAL: /manager/status?XML=true HTTP/1.1 404 Not Found

I don't know what I'm doing wrong. I'm trying to use this plugin, check_tomcat.pl but it doesn't seem to be configured correctly. Keeps returning the error: CRITICAL: ...
-1
votes
1answer
470 views

Nagios nrpe check_nrpe plugin missing [closed]

installed nagios nrpe into remote machine from ubuntu repository sudo apt-get install nagios-nrpe-server and plugins as sudo apt-get install nagios-plugins-basic nagios-plugins ...
1
vote
1answer
3k views

What is the correct way to stop the nagios ndo2db daemon?

What is the correct way to kill Nagios's ndo2db daemon? When I shutdown nagios and ndo2db I do the following: /etc/init.d/nagios stop /etc/init.d/ndo2db stop and I see the following in nagios.log: ...
0
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1answer
104 views

Nagios check_snmp (New Response) CRITICAL 7

I have got a new critical figure / output as 7 SNMP CRITICAL - *7* What does above 7 refer to?
0
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1answer
115 views

Setting downtimes in Nagios/Icinga via SCCM

At our company we have quite a lot of Windows 2012/2008 servers which are updated automatically (and sometimes rebooted) via SCCM. All our servers are monitored via Icinga/Nagios. If the servers are ...
0
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0answers
191 views

Percona-Nagios-Plugins: pmp-check-mysql-status not showing information properly, what could be the cause?

I've downloaded Percona's Nagios monitoring tools and started setting them up, but I have some problem with one of the checks (the only one I've tried so far). I have this command in ...
3
votes
1answer
148 views

Nagios check for wuauserv on Windows Server 2008+

From Windows Server 2008+, wuauserv is no longer a service that's ran all of the time and is instead ran as a scheduled task. I'm not sure of the exact behavior of how the scheduled task is created as ...
3
votes
4answers
6k views

nagios nrpe check_procs wrong return value

I have a problem with my nagios monitoring. I'm trying to check a process on a remote host using nrpe. The host was already been monitored by nagios, so I only needed to add a line to the nrpe.cfg ...
0
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0answers
92 views

Nagios sends out emails with Attachments

I use NSCLIENT to run a custom powershell script that echos a few lines of text. From what I noticed, after echoing more than 2 lines, the alerts received via email from Nagios have the body empty and ...
0
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0answers
17 views

CheckMK template does not show up

I following this checkmk guide to monitor disk parameters: http://dev.vemarsas.it/documents/32 I restarted the nagios multiple times and rescanned the hosts. Any idea why?
3
votes
2answers
6k views

How to monitor log files via Nagios

Is it possible that i can monitor . kernel log messages , apache error logs , mail log messages via nagios. I have three linux servers and i want that on every server there should be something so ...