Questions tagged [nagios]

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

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Passing C variables values to js script [closed]

I recently had a little problem when I was trying to develop one of the nagios interface is how to take values in C programming language and integrate them in js script to design a chart in the same ...
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Nagios Core full daily report

Is there an (easy) way to make it possible in nagios core to let it send a full daily report that shows me an overview, like the WebUI what's the status of the host, services, etc. is? I want this ...
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Nagios server monitoring itself?

When it comes to Nagios monitoring, does the server monitor itself as a client? If yes, does nagios server consider itself as a remote server?
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How to change Nagios check_snmp configuration to use SNMP v3

I posted this on SuperUser but I realized this question is probably more relevant here. I am trying to check uptime via Nagios's check_snmp plugin on a SNMP version 3 enabled UPS. I'm able to do an ...
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How does nagios store monitoring data captured?

I have a few questions about nagios and databases: How and where does nagios store the data it collects? How can I transfer this data to the database? Thanks in advance.
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Remote monitoring by Nagios Core

I am working on a project using Nagios to monitor a controller that monitors gas leaks, temperature,... remotely. How can a Nagios Core in one city communicate and receive supervision information ...
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Nagios Parent service

We have an issue where lots of our checks will suddenly fail if the network from our office stops working for a short while. We had a 15 minute outage and nagios sent 800 odd txt messages to us. my ...
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How to silence check_mk mysql slave check

I have check_mk running to see if the mysql slave replication is running. Some of the tables however create issues that a cronjob fixes periodically by cleanup. I can't change the application that's ...
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Nagios4 prompts for username/password but has limited capabilities after logged in

I followed the instructions from here: https://support.nagios.com/forum/viewtopic.php?f=7&t=56970 And now nagios prompts me to log in. It is correctly parsing the username/password. Unfortunately,...
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Virtual machine network issue with host and ping service checks (within Nagios Core and from command line)

I have got a Ubuntu server guest virtual machine (installed via virt-install) which runs Nagios Core monitoring but there is a major issue with the monitoring (i.e. ping packet loss / RTA or ...
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84 views

Nagios is alerting CHECK_NRPE: Socket timeout after 30 seconds but it is running

I have nagios on my server which is alerting me CHECK_NRPE: Socket timeout after 30 seconds. But my service is running: ● nagios-nrpe-server.service - Nagios Remote Plugin Executor Loaded: ...
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How to disable nagios service check at a specific interval

I'm monitoring nagios services with daily checks using nrpe and check_procs. I need to disable the check from 17:00 to 08:00 . I tried to use timeperiod defined in timperiod.cfg but the problem is ...
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Creating memory check via nagios core

How to check memory and incoming/outgoing connections of host. I have created memory usage i am getting error as below. Name of service:Memory Usage Status:UNKNOWN Last Check:03-13-2020 04:05:45 ...
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49 views

Two nagios instances in the same machine

After days of surfing on the net and trying by myself, I urgently need your help. So, I have Nagios Core 4.4.3 installed in my centos machine that I use to monitor PROD and TEST environnement of one ...
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Nagios - check procs and --metric=elapsed on the same service

After many days of working and searching onn the net, I'm getting back to you as a last chance for help. I'm working actually on monitoring unix process with nagios core 4.4.3 with nrpe . My goal is ...
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NSClient++ rejects connection or fails to send info

I'm trying to get to work some active checks on Windows endpoint machines, NSClient++ works just fine with my Windows servers but when it comes to checking any endpoint the only response I get is ...
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24 views

Nagios Core4.4.3 snmptrap

I followed the instructions at the link: Snmptrap-config-ling To configure Nagios Core 4.4.3 with snmptrap for a Sonicwall, and a Netapp, it works perfectly but I have a problem / error with: When I ...
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26 views

Asserting on extended information from Nagios's check_mysql

I'm running the check_mysql plugin using NRPE on a remote DB-server, and while I can get satisfactory data on whether or not the server process is working as needed, I see that the plugin outputs a ...
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nagios: Enable IPv6 for nsca server

I have here a nsca plugin of an nagios server which runs with IPv4 very well. But how can I force nsca to listen also for IPv6 connections? The nsca port is in my case 5667. The firwall is open for ...
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236 views

Nagios NRPE won't allow arguments

I am trying to use a Nagios NRPE plugin to communicate with my servers. I have a command definition in /etc/nagios/nrpe_local.cfg to use it: command[check_service]=/usr/lib/nagios/plugins/...
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61 views

mk-livestatus No UNIX Socket Existing

I'm currently in the process of setting up NagVis, and one of the prerequisites is that mk-livestatus be up and running on your Nagios server. This is proving difficult. The website for check_mk ...
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117 views

Authentication Failure using mod_authnz_ldap with Active Directory

I've set up a Nagios Core server on CentOS and I want people to be able to use their AD credentials to log into the web interface. At the moment, the httpd configuration is: AuthBasicProvider ...
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24 views

MySQL least privileges to get database/tables size

I'm using centreon_plugins to monitor some mysql databases. As a best practice I create a dedicated user for monitoring and I give it the least possible privileges. For simple monitoring I usually ...
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295 views

Nagios Core 4.4.5 Ncpa 2.2.0 Monitor Disk Usage in Windows Machines

I'd like to achieve the following result: from nagios core 4.4.5 receive disk usage information on several windows servers using ncpa 2.2.0. Right now I did the following thing. I configured in nagios ...
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66 views

NAgios: add/import a list of host to ping, automatically?

I am searching for a way to automatically add a few hundreds of hosts to ping in Nagios. I guess there could be procedure or a file to fill with something like an /etc/hosts file to have Nagios to ...
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Failed to start Nagios Core 4.4.5.,nagios.service: control process exited, code=exited status=203

When I started nagios, I was given the following error:,nagios.service: control process exited, code=exited status=203。Please confuse
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Nagios add “Contact group” name in the email alerts

I've been managing a nagios server which was setup by someone else. I found that there's a lot of contact groups configs and contacts_name. I'm trying to disable some of them since some alerts are ...
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25 views

Nagios3: Different CRITICAL color for certain host groups

My colleagues want a new host group to have more visibility and want the Critical status to be different color. This is defined in nagios3/stylesheets/status.css as statusBGCRITICAL but as I can't ...
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47 views

pnp4nagios graph after 3 days

Dears, I have a weird issue with my pnp4nagios, In fact i have a nagios server and a lot of graphs using pnp4nagios, however, i only have a problem with a single graph. The problem is that it only ...
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113 views

Talking to NRPE2 clients from an NRPE3 server

I'm standing up a new Nagios server, and I have run into a bit of a snag. Our existing server is running FreeBSD 11 w/ Nagios 4.3.4 and nrpe2. It can communicate w/ the nrpe2 daemons on our various ...
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49 views

Monitor unix process with Nagios Core

I'm begginer with Nagios and i'm trying to monitor if a specific process on my unix machine is up or not. Server and client are on the same machine : Trying to monitor that machine from a Nagios ...
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109 views

Setting up exception for error in nagios

I am not sure if this is possible but I would like to set up exception where Nagios does not report on a few checks. e.g. On one of our server, one of the ram component is broken and its been broken ...
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NSClient++ with .NET modules

I'm trying to implement a plugin for monitoring SQL DBs through NSClient++. My idea was to create a plugin or a .net module that can allow me to receive the parameters in some format, open a ...
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295 views

spaces in nagios argument ruining command - check_NRPE

I have a Nagios NRPE command failing to accept an argument that includes a white space. I'll include a list of everything I've tried at the very end. Here's examples of how my setup is: In the ...
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1k views

NRPE not working after NRPE plugin upgrade from v2.15 to v3.2.1

I'm migrating our Icinga 2 from Debian 8 to Ubuntu 18.04. The old server had NRPE plugin 2.15. The new server has NRPE plugin 3.2.1. If I try to connect with the new plugin to old NRPE servers (v2.15 ...
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102 views

custom nagios plugin that could generate multiple alerts

I am trying to create a plugin (in python) for nagios that would fetch a json file from a remote server and then according to the contents of that file will generate alerts. The specific file is ...
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79 views

Nagios 4; Need a way to see the history of a service

I need to work out the history of a service in nagios. So I clicked on the service, then "View history for this service", but just get an error saying "No history information was found for this ...
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Nagios dependancy of services on host state

please, how can i configure Nagios when a host get down, in order to get only one alert of host down and not receive the host's services alerts (the rest of alerts)?
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Monitor long ongoing mysql queries

is there any plugin or possibility to check with nagios MySQL query, which is running longer than for example 1hour? So I get alerted and can manage it? I use this code, but I am not sure how to ...
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146 views

Nagios not sending emails

Nagios is not sending emails. I see the logs that it shows alerts but no emails are going out. Any suggestions to debug the issue? /var/log/maillog doesn't show any log entry. Manually sending emails ...
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87 views

Nagios: Dependency from service to different host

We have a server "zibal" that is running several Selenium checks for websites on multiple hosts. At the moment, when one of the servers hosting a website goes down, the failing selenium check will ...
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Icinga 1.x alert history shows all items from 1970

Icinga Classic UI 1.13.4 (as offered by Debian 9, replacing Nagios 3 from Debian 8) is exhibiting a strange behaviour when reviewing alert history. When selecting "View Alert History For This Host" ...
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573 views

Using the Dell open manage plugin with Nagios Core; fails to find server

I'm trying to monitor a Dell R730 server using the Dell OpenManage Plugin (https://www.dell.com/support/article/uk/en/ukbsdt1/sln311076/dell-emc-openmanage-plug-in-for-nagios-core?lang=en). I've got ...
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158 views

How not to raise other alarms in Nagios when Linux server is down?

Nagios reports when processes are down or when Filesystems are unmounted. But it reports all that when the Linux server is down. What do I need to configure to make sure when server is down only ...
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1answer
179 views

How do I use Nagios to monitor a log file that generates a random ID

This the log file that I want to monitor: /test/James-2018-11-16_15215125111115-16.15.41.111-appserver0.log I want Nagios to read it this log file so I can monitor a specific string. The issue is ...
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120 views

Can I stop monitoring a Host if it's OFF, and turn monitoring ON when it's ON?

I was wondering if there's a possibility that Nagios could stop monitoring a host if it's OFF, and turn monitoring ON when it's ON? The idea was to use my Nagios server that will monitor if a ...
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1answer
48 views

Nagios notifications only for online hosts

At work I have some 30 Linux workstations which share user accounts and data with NIS and NFS. Users are allowed to turn them off if they do not need them. In order to get an overview over the systems ...
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333 views

Nagios/Icinga: Don't show CRITICAL for DRBD partitions on standby node

I've set up a pacemaker/corosync ha-cluster in a failover configuration with two nodes: productive and standby. There are three DRBD partitions. Everything works fine so far. I'm using Nagios NRPE on ...
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188 views

How to get ethernet bandwidth statistics with check_snmp?

while running check_snmp_int.pl to get interface names i get the answer # ./check_snmp_int.pl -H 56.22.17.43 -2 -C public -p 44200 -v -n zzz Alarm at 15 + 5 SNMP v2c login Filter : zzz OID : 1.3.6....
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18 views

Use serviceescalation to “de-escalate” notifications

Is it OK to use the serviceescalation Nagios facility to reduce frequency of the notifications sent? The idea is to setup a generic service template with frequent notifications by default and provide ...

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