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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6
votes
5answers
2k views

Nagios Check that Simulates Web Full Rendering Time

Does anyone know of a Nagios plugin or cli program that can simulate the load time of a webpage as it would be in a browser. For example the resulting total load time of something like Pingdom's Full ...
4
votes
6answers
9k 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 ...
2
votes
3answers
6k views

How to use nagios' check_ldap?

I'm having a spot of trouble with check_ldap. my command is: ./check_ldap -H myhost.com -b o=ABC,c=D -p 1234 I'm getting the error: "could not search/find object classes in o=ABC,c=D" Any ...
3
votes
1answer
749 views

Overriding Nagios hostgroup service with host service

I currently am experimenting with defining a set of services to all hosts in a hostgroup, this is working fine. My issue is that I then want to be able to override these service definitions which ...
0
votes
0answers
111 views

Nconf can't generate & deploy Nagios configuration (SELinux)

this is my 1st post here. I'm having trouble with getting NConf (Nagios configuration tool) work with Nagios under CentOS 6.5 (64bit) with SELinux enabled. NConf wasn't able to generate & deploy ...
3
votes
1answer
149 views

Nagios plugin check_hwinfo not working

I am using Nagios to monitor Windows hosts. I am using Nagios 3.5 running on a Centos 7 server. The following packages have been installed from the official repositories and from the EPEL repository: ...
-1
votes
2answers
34 views

How to pass your own -H flag to a nagios plugin?

Looking here on the nagios docs I see that it's standard practice to pass a hostaddress macro to your commands with the -H flag. What if your command already has a -H flag however? It's not clear to ...
-3
votes
1answer
159 views

Passing arguments to nagios plugin

I've installed my first plugin on a Nagios server, but am having trouble getting the arguments right. I've tried some things with $ARG1$ but am essentially just flopping around. One complication, ...
0
votes
1answer
123 views

Is it possible to get host groups from nagios config to ansible?

We have already nice preconfigured nagios with hosts, host groups etc... Is it possible to get host groups from nagios to ansible? are there some plug-in/module which may allow us to do: ansible ...
1
vote
2answers
90 views

NAGIOS host availability test for host that can't be PINGed, won't talk to me, but can be traceroute'd

Part of my network estate has a fairly important dependency on a host whose availability is difficult to check. I have a number of hosts behind it, and my NAGIOS VPS provider occasionally has routing ...
0
votes
1answer
393 views

Nagios Configuration error: “Unexpected token or statement in file” during Pre-flight check

I'm using Nagios 3.2.3 on CentOS 6.5. Everything during install and make went smoothly. I transferred over my conf files, made the appropriate changes, and did a pre-flight test against my nagios.cfg ...
0
votes
1answer
320 views

Apache and LDAP Authentication

We are using Apache mod_authnz_ldap to authenticate users to Nagios using our LDAP Active Directory. Right now it is working with using SamAccountName. However, Nagios is using the SamAccountName as ...
0
votes
5answers
240 views

NRPE Home Directory

I'm using NRPE and I a rather annoying problem. I need a couple temporary files written to the home directory of the user NRPE is running under (nagios). I checked that the /etc/passwd entry for ...
0
votes
2answers
823 views

SNMP timeout in nagios

Why would I be getting "WARNING - SNMP check timeout." in nagios? (For various things like load and disk space checks) snmpd is running fine on the machine being checked. Please let me know what ...
0
votes
1answer
110 views

Monitor Linux services with Nagios 4 [closed]

I'm trying to monitor a few RHEL7 services via Nagios. I'd like to monitor if the services are running or stopped and receive an alert when stopped. I haven't any out of the box option with Nagios 4 ...
6
votes
2answers
5k views

Checking a secure website with Nagios

I want to create a nagios check of my secure website. All the check needs to do is login to the site with login details that I pass the script. Does anyone know of a plugin or script that will allow ...
1
vote
2answers
414 views

omd nagios monitoring servicestate mssql / Failed to open service

I'm trying to monitor mssql service in OMD nagios, but with no success so far. Communication port: 1433 instance name is like: MSSQL$instance Here's my check: check_command check_nt!SERVICESTATE!-l ...
0
votes
0answers
48 views

Nagios Core 3 Check_AS400

I'm monitoring several iseries LPARS with Nagios 3.5.1 running Ubuntu 14.04. I downloaded the .CLASS check_AS400 plugin and followed the instructions. I have a hidden file .as400 that houses the sign ...
0
votes
1answer
126 views

Nagios: how to monitor supermicro based systems

I have several older supermicro based NAS devices. Happened to be at our hosting facility today and saw that one had a disk failure. I thought that I was monitoring this via SNMP->Nagios but clearly ...
0
votes
0answers
260 views

Nagios 4 on Centos 7 - Old server

I am trying to install Nagios 4 on an old Pentium 4 machine running Centos 7. I have installed the OS from the x86_64 ISO provided at the website. Nagios is downloaded with wget from Sourceforge. I ...
0
votes
2answers
138 views

What controls the Y-axis of data drawn into graphs?

I've recently set up Nagios for a client and have been wondering about some of the graphs we get out of NagioGrapher. For example, all systems use the same graph configuration for their physical ...
-2
votes
1answer
214 views

NRPE: Unable to read output locally

I am running /usr/lib64/nagios/plugins/check_nrpe -H 127.0.0.1 -c check_disk as root yet get NRPE: Unable to read output. Any help?
1
vote
2answers
61 views

How can I monitor “primary and secondary” Cognos nodes?

We have several Content Managers in Cognos that are running: one as a primary, one as a secondary. I would like to be alerted if there isn't one node acting as primary, if the primary node changed, ...
1
vote
1answer
72 views

Nagios compilation error on Centos

I am trying to install Nagios 4 on a Centos 7 machine using the instructions found here. When I get to the compilation and input make all I get this error: make[1]: *** No rule to make target ...
1
vote
2answers
85 views

Set different warning thresholds for Nagios on weekends

I'm using Nagios to monitor CPU usage on my servers with the check_load plugin. On weekends we have some batch jobs running and there are hardly any real users anyway, so I'd like to have the warning ...
1
vote
2answers
102 views

Nagios: check host service even if host is down

Is there a way to force nagios 3 to check a particular host's service (and notify such events) even if the host is down? The reason I ask so is that I have a service that checks if a host's IP ...
1
vote
1answer
26 views

Nagios Notification Period Setting, Will Nagios Hold the Email?

I am sorry for getting a little lazy not to try it out, but considering it may be helpful for others too, so I ask this question. If I set Nagios notification period like: 7 am - 5 pm, Mon-Fri Once ...
1
vote
1answer
212 views

Negative values for storage size over SNMP

We ran out of space on a 5 TB volume on a Windows storage server, so we copied the data into a new 10 TB volume. Now our nagios-based monitoring is reporting data I'm not happy with. When I looked ...
1
vote
1answer
102 views

DataStax OpsCenter 5.0.0 API doesn't increase last_seen when nodes down if DataStax OpsCenter Agent is down, used to work with 3.2.2

I've been using the DataStax OpsCenter (Enterprise) 5.0.0 REST API with DSE 4.5.1 (Cassandra 2.0.9) to query the /$cluster_name/nodes endpoint and see the last_seen field for the number of seconds ...
3
votes
2answers
1k views

Nagios child/parent relationship for host that is reachable by multiple paths?

Consider the following network setup below: Further, assume that Switch 1 and 2 are managed switches, but only have an IP address assigned on vlan3. How would you set up the parent/child tree for ...
0
votes
2answers
90 views

Nagiographer on Debian Wheezy work partialy

I made standard installation which is Nagios3 + Nagiosgrapher on Debian 7.6. In /etc/nagios3/nagios.cfg I added: process_performance_data=1 and ...
0
votes
1answer
56 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 ...
2
votes
1answer
2k views

Nagios NTP, discarding peer

We're using nagios *check_ntp_time* for monitoring time on our servers. Unfortunately the service is flapping. And reporting a lot of false-positives. It happens everytime for random server in random ...
0
votes
1answer
97 views

New nagios/cacti monitoring setup, should I use a dedicated VM?

Currently we have 4 bare metal servers and one small VM server (all running centos6) and I'm looking at setting up monitoring for the Percona MySQL db server and replication slave (bare metal), as ...
1
vote
1answer
63 views

Nagios/Icinga: different passwords for each NSClient++ host

Is it possible to pass a different password to the check_nt/check_nrpe command for each windows host I have defined in my icinga configs? For example, I have 3 windows hosts define host { use ...
-4
votes
2answers
40 views

Nagios Wrapper Script that Checks board [closed]

I am in need of a kind of automation script or program run in the Linux environment that can check my Nagios board and can display results or store it's results of the Host, Service, Description, etc ...
1
vote
2answers
71 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
203 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
votes
5answers
26k 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
votes
2answers
640 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
91 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
votes
1answer
504 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
vote
2answers
756 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
votes
0answers
34 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
votes
3answers
550 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 ...
3
votes
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
votes
1answer
328 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:~$ ...
8
votes
2answers
275 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
votes
1answer
154 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
272 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 ...