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

learn more… | top users | synonyms

0
votes
2answers
4k views

check_ssh executed from Nagios server returns “Server answer: ”, nothing else

Commmand works on the host I need to monitor (its IP is denoted as $HOSTADDRESS$ here): [root@host ~]# /usr/local/nagios/libexec/check_ssh localhost SSH OK - OpenSSH_4.3 (protocol 2.0) However, on ...
7
votes
7answers
6k views

How do I refresh nagios and stay on the current page?

Ever since I updated to nagios 3.2.1 from 3.0.6 I can no longer refresh any status pages. When I refresh, it just goes back to the "home" page of nagios, forcing me to drill back down to whatever I ...
0
votes
1answer
11 views

Debugging Nagios notification failure

I have spent the day setting up custom twitter notification on nagios. Everything seems to be in place and the notifications seems to be triggered but the script is not called. my contacts ...
1
vote
1answer
1k views

Nagios NRPE plugin check_ad - Fixed

i've reading about this problem much and trying to solve it on my own ways but still not luck. I've running debian 7 as nagios server. Problem is that i cant check state of my Active Directory Domain ...
0
votes
1answer
18 views

check_mk Nagios Plugins

I am trying to move from Nagios to OMD, however, I have a Nagios plugin which I really need (phpfpm) but I am unable to add the plugin to check_mk. On the check_mk website says that you should use ...
0
votes
3answers
46 views

Use Nagios to monitor 2 locations

As I am new to Nagios, I would like to ask if anyone knows how to monitor 2 physical locations using Nagios. So for example, we are having 2 datacenters which are interconnected. I have set-up a ...
-3
votes
2answers
43 views

VMware ESXi 5.5.0 server - nagios monitoring [on hold]

I have a VMware ESXi 5.5.0 server and I want that my Nagios server can monitor it. How can I install the nagios-tools on the ESXi 5.5.0 server?
1
vote
1answer
33 views

Why are my passive checks not processed?

I have the following service configuration to capture SNMP traps: define service { name SNMP_TRAP service_description SNMP_TRAP ...
5
votes
5answers
4k views

Nagios Multiple servers config files

I'm already configuring a Nagios setup to monitor about 30 Windows servers. Now i am adding every servers definition to the Windows.cfg file but i think would be easyly configurable to have one .cfg ...
1
vote
1answer
939 views

Is there a way to more detail on this error message “Error processing object config files!” from Nagios

I am migrating from Nagios 3.2.3 to 4.02 and I am stuck with a non-specific error message: Is there a way to coax some more detail out of Nagios Core? I get no clue from the attached error output ...
3
votes
3answers
2k views

Nagios plugin to take process snapshot when load is high

We have configured Nagios with check_load via NRPE plugin to monitor server load, it reports when load is high, but does not have option to take a snapshot top processes (like top command) at that ...
1
vote
2answers
3k views

Monitor a HTTPS site requiring login with Nagios

I'm trying to figure out how to get Nagios to monitor a few sites that are using HTTPS and require a username/password to log in - I can't figure out how it should be done so I can set a username and ...
1
vote
0answers
16 views

check_mk: global name 'entry' is not defined

I'm having a ton of trouble with a nagios installation I've been working on powered by check_mk and OMD. When using the web gui to manage check_mk, the notifications page displays the following Python ...
1
vote
1answer
26 views

Nagios: Could not resolve hostname

My setup: hosts.cfg - contains definitions for each host under monitoring, e.g.: define host{ use linux-server host_name rdss-vpn ...
0
votes
0answers
10 views

How to install and configure Nagios-MNTOS?

I just tried to configure MNTOS for my 2 Nagios server. I'm very new to this tool. I do not get a clarity on the installation. Should i install MNTOS on a separate server or any of my 2 Nagios ...
2
votes
5answers
4k views

Nagios NRPE: Command “my_command” not defined

I have installed Nagios® Core™ 3.5.1 and NRPE v2.14 on my client which running RHEL 6.3 I have this error message on my Nagios NRPE: Command 'check_mysql_connections' not defined On my nrpe.cfg I ...
4
votes
3answers
525 views

Weird Extended Information on Nagios Web UI

Below are screenshots when I click on any Service/Host Extended Information: The weird info at the top: The content of line begin with __gmon_start_libc.so...: ...
-1
votes
2answers
22 views

Checking ldapsearch and ldapsearch -h 127.0.0.1 -Z -x in nagios [closed]

Basically I just want to ensure whether ldapsearch and ldapsearch -h 127.0.0.1 -Z -x I did some check_ldap command and it's fine but I specially want to verify ldapsearch and ldapsearch -h ...
0
votes
1answer
177 views

Nagiosgraph mouseover fails

I have setup Nagios 4 together with Nagiosgraph and they are both working perfect. However the javascript Mouseover effect does not work. I have copied the following line in ...
4
votes
5answers
19k views

What Warning and Critical values to use for check_load?

Right now I am using these values: # y = c * p / 100 # y: nagios value # c: number of cores # p: wanted load procent # 4 cores # time 5 minutes 10 minutes 15 minutes # warning: 90% ...
15
votes
10answers
37k views

NRPE unable to read output, but why?

I have this problem with NRPE, all the stuff I've found so far on the net seems to point me at things I've already tried. # /usr/local/nagios/plugins/check_nrpe -H nrpeclient gives NRPE v2.12 as ...
0
votes
1answer
1k views

FreeNAS/FreeBSD: How to access status of ZFS volume from jail?

I am trying to set up NRPE to enable remote Nagios monitoring of a new FreeNAS 0.91 system. I mostly have this working. I can connect and inquire about basic information like number of processes, ...
5
votes
6answers
10k views

Use Nagios to monitor a log file and send log details

I know Nagios can monitor and alert on the content within a log file, but does anyone know of a plug-in, or other tool, that will monitor a log file for a particular string and then send the entire ...
0
votes
0answers
36 views

check_snmp plugin on nagios returns: External command error: snmpget: Authentication failure (incorrect password, community or key)

I’m trying to check the uptime of a Cisco 2960X switch on Nagios with check_snmp plugin but I always get the following error: [root@nagios]# /usr/lib64/nagios/plugins/check_snmp -P 3 -U snmpv3user -L ...
2
votes
2answers
31 views

Define service for all hosts that belong to all the given hostgroups

I can not figure out how to create a service for all hosts that are in 2 given hostgroups. Example hostgroups: oracle: hostA, hostB prod: hostB, hostC Now I need a service for all hosts that are ...
3
votes
3answers
9k views

Nagios alert by email for WARNING and pager for CRITICAL [duplicate]

I want to set Nagios up to issue warnings (e.g. mildly high load or disk usage) via email, but for critical items to alert by pager. Right now we notify via email and pager simultaneously for all ...
0
votes
0answers
12 views

Monitor Log File With Nagios based on description [duplicate]

We have a Log file on our system which monitors our back-up system. If there is an error in the backup system, an error message is added in the log file. Can we monitor that there is an error message ...
1
vote
1answer
1k views

Problems in monitoring file age with nagios (command substitution in filename)

In my current nagios installation I check for the existence of a remote backup through NRPE. In particular, my remote nrpe.cfg (on a Ubuntu 8.x) is: ...
0
votes
2answers
4k views

pnp4nagios does not generate perfdata

I am running nagios2, pnp4nagios-0.6.16 and php 5.2.4-2ubuntu5.19. In my setup, pnp4nagios is correctly generating perfdata, which can be seen via the web interface in graphical form for lots of ...
3
votes
2answers
2k views

Nagios: Service dependency on same host for an entire hostgroup

I have a Nagios system with a large number of hosts categorised in different hostgroups. Each of these hosts has two services monitored on it, one of which is intended to be dependent on the other - ...
1
vote
2answers
3k views

nrpe: Host is not allowed to talk to us

I installed nrpe on new servers. Nagios is already running and checking other server (I haven't installed). I've got several error lines in my syslog file : Oct 31 15:17:01 myservername nrpe[41848]: ...
2
votes
3answers
5k views

How I can check for exact amount of space (MB or GB) in Nagios using check_nt command instead of percentage used value?

How I can check for exact amount of space left (MB or GB) in Nagios using check_nt command instead of percentage value? Currently I'm using this command: check_command ...
0
votes
1answer
1k views

Nagios - Could not complete SSL handshake

I'm trying to configure Nagios command for checking status of physical memory on a remote Windows host using NRPE plugin. I'm using Nagios v3.0.6 on Ubuntu Server v14.10, and latest stable version of ...
0
votes
0answers
16 views

How to forward incoming SNMP trap from Nagios To Other Application

I have a setup in which all devices are sending snmp traps to Nagios. I have a application behind Nagios which will processes snmp traps. Now what I want is every snmp trap coming to Nagios should be ...
1
vote
2answers
29 views

check_nrpe ssl couldnt complete handshake, in both master and client server it works fine individually

I am getting this check_nrpe ssl couldnt complete handshake error in master server when I try executing the below command. /usr/local/nagios/libexec/check_nrpe -H 10.192.122.234 10.192.122.234 ...
1
vote
1answer
46 views

Remotely monitoring ISC DHCP Server with Nagios

I have a WAN and I'm trying to use Nagios to check that a DHCP server in a subnet not directly visible to the Nagios box is up and handing out IP addresses, and I've been unable to make this work. I ...
0
votes
2answers
8k views

Cannot get check_uptime plugin for Nagios to work. Unknown status?

Hoping you guys might be able to spot what i'm missing here. I'm not able to get a simple check_uptime plugin to work in Nagios. When I invoke help for the plugin using: ...
-3
votes
1answer
39 views

which port is used on nagios check_nrpe, is the ssh connection is must between nagios master and client server [closed]

I have configured the nagios master server and nagios client servers, still after lot of debugging i couldn't achieve the communication btwn these two :( i am getting this generic error CHECK_NRPE: ...
4
votes
2answers
1k 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
votes
1answer
42 views

Monitoring Processes in Detail - not summarized [closed]

I want to monitor the running processes of a linux machine over time. My do-it-yourself solution would be: Dump ps aux --forest every minute to a file. Background: If I get a message "something ...
0
votes
1answer
30 views

Nagios 4.0.x - Mail notification only sending to the first contact of contactgroup

I have a working Nagios solution since about 4 years. I noticed some time after updating Nagios 3.5.x to a 4.0.8 version, one person havn't received any error notifications. Nothing changed on our ...
4
votes
1answer
189 views

What is a solid process for designing a monitoring system?

The short version: I've got a heterogeneous environment of ~400 hosts using Groundwork/Nagios for monitoring. The current checks, hostgroups, and servicegroups have been put together in an organic, ...
2
votes
1answer
63 views

Change filename format for Nagios archived logs to use different date format?

I have just set up a Nagios server, and by default it keeps archives of the log messages in /var/log/nagios3/archives. However the files are named with US style date format, like ...
1
vote
0answers
60 views

UNKNOWN: No handler for that command

I have the check_task.vbs placed in C:\nsclient++\scripts on a Windows Server 2008 R2. I defined in the NSC.ini a NRPE Handler like this: [NRPE Handlers] check_task=cscript.exe //NoLogo ...
1
vote
1answer
25 views

Configure Nagios to read from SharePoint Online list

I have a SharePoint Online list with domains and the dates on which they expire. I would like to be able to configure Nagios (Centreon 2.1.6) to read the expiry date of a domain from the list and ...
0
votes
0answers
33 views

nagios check fails on nagios host but works locally

I wrote a small bash script to use with nagios to check if nrpe is running. The check works locally when run as root, but fails from the monitoring host. From the host I'm trying to monitor, I ...
0
votes
1answer
39 views

check_mysql_slavestatus RPE: Unable to read output

i am using Nrpe plugin on Ubuntu from nagios exchange check_mysql_slavestatus. Manually its working from : root@Bastion-01:/usr/local/nagios/libexec# ./check_mysql_slavestatus -H Slave-ip -P 3306 ...
0
votes
1answer
81 views

nagios core v4, please help me add more service checks for a single host

I am having difficulties understanding the documentation and would appreciate clarification. I have NRPE and nagios plugins installed from source on both the nagios server and its clients. Can ...
1
vote
1answer
274 views

Network devices bandwidth monitoring and graphing with open source components? [closed]

We can use ganglia to monitor metrics on servers, but it does not seem to be an option for network gear monitoring. To monitor bandwidth of a switch, we need to either poll the port through SNMP ...
1
vote
3answers
4k views

How can I resolve “(Service check did not exit properly)” and “(null)” results with my services?

I'm using some Perl-based scripts for service checks in Nagios and I get (Service check did not exit properly) and (null) as the result in Nagios, but the script works great on the command line. I've ...