Questions tagged [check-mk]

Check_MK is an extension to the Nagios monitoring system that enables a Python interface and allows better scalability.

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Checkmk snmp_extended_info firmware data not shown in GUI

I m running Checkmk Raw Edition 2.1.0p4. I m trying to configure the HW/SW Inventory plugin to interrogate multiple appliances' firmware versions. The problem arrises with my Fortigate firewall. The ...
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Checkmk behind NAT can't reach agent in dmz

I have checkmk running in our lan. I want to monitor a linux vm in the dmz. So i installed the agent on the linux vm, enabled ipv4 for it, but checkmk can not find any services since the agent was not ...
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Checkmk 1.6.0p21 can't login even after resetting password - Invalid credentials [closed]

I'm unable to log into a Checkmk 1.6.0p21 dashboard through the web interface. I have access to the machine running it and nothing I do on it makes a difference. It always gives the error "...
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Check_mk agent listening on ipv6, how to change to ipv4

Hi I am new to check_mk and not very good in linux server configuration at all, so thanks for your patience. I installed check_mk under debian via gdebi (systemd not xinetd - and used default ...
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Check_MK: Custom User Notification goes to all users not to the one in Contact Groups

I would like to kindly ask for some advice. I have configuration that looks like this: Users are in Contact Groups. In Host Folders I have permissions to Contact Groups. And Hosts inherits this ...
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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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3k views

Check_MK: How to add service to Servicegroup?

I'm new at monitoring, and would to know is it possible to add a Services to a Servicegroup. What I will do: I have Servers how i monitor and created a Servicegroup, and now I will add queries like ...
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371 views

Check_MK AWS monitoring - RDS checks not working

I have configured AWS monitoring with Check_MK version 1.5.0p13 (following the documentation at the official Check_MK site). Everything works, except RDS checks, when I go to discover services, I get: ...
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Check_mk cannot login - invalid credentials

I've installed omd 2.90-labs-edition. After creating new site I want to login to check_mk (1.2.8.p20) web interface, but the given credentials do not work, I've got "Invalid credentials". This ...
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833 views

check_mk logwatch monitoring log with date in filename on windows

In windows, is there a way to setup dynamic dates on logs filenames monitoring using check_mk_agent's [logfiles] section?? In linux I know we can use $(date +%Y%m%d), but don't know if it works on ...
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Reverse proxy with URL rewrite issues for check_mk and nginx

I'm trying to run check_mk in docker behind a proxy, but I'm having problems with not being able to set the check_mk base_url. So check_mk is running on http://somehost:6000/sitename/check_mk/ and I ...
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Check_MK, read-only OMD access for Digital Signage

I have the latest version (1.4.0p34) of Check_MK setup on Ubuntu server 18 with LDAP integration. I would like to have a page displayed on a Digital signage that I have that is a slide show of an ...
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check_mk using ssh tunnels/ssh proxy

I'm trying to setup monitoring with check_mk and wanted to see if this is possible. My issue is as follows: Layout: Monitoring server: 1.1.1.1 Bastion server: 2.2.2.2 Host A: ...
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Check_mk on auto-scaling non-public servers

In the company I work on, currently all monitoring is "mandated" to happen using check_mk. This forces some of our deployments in AWS to always have public IPs on all machines, and then someone has ...
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1 answer
599 views

Check_mk time periods

I have a Check_MK Raw 1.4.0p21 setup on a Ubuntu box 16.04.3 LTS. I`m having difficultie getting Check_MK to respect WATO Time periode. As you can see in the code block, i have a window between 04:56 ...
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Check manual page of check_sql always giving a warning status

I've installed OMD and activated the Check_mk interface and Nagios engine. It works like a charm except for one thing. I can't properly check my SQL. Here is what I've done so far: Created a new ...
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check_mk BI notifications

I'm trying to configure Check_MK 1.2.8p20 (multisite-enabled) to work with BI notifications. I've set up the service account, have my aggregations working, but, upon check, I receive: ERROR: Invalid ...
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missing dependencies for check_mk on ubuntu (omd-1.20) php5 and perl5

I'm following the install/setup instructions which are available on both the check_mk and DigitalOcean sites to setup monitoring based on a Ubuntu server. However I am getting errors that several ...
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Can nagios check_mk be used to send the contents of a text file to a group of users and if so, how?

I have a server that copies files between two ftp sites, a middleman server because the sites have been locked down to only accent connection to this server. Ocassionally the process stops sending ...
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793 views

Check_MK NTP UNKNOWN - no information from NTP: timeout in ntpq -p or NTP daemon not running

Would really appreciate some help with this. I have a remote server that keeps giving me "UNKNOWN - no information from NTP: timeout in ntpq -p or NTP daemon not running" through our Check_MK ...
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OMD (thruk / naemon) and check_mk plugins

I have some problems coming around OMD and I don't seem to find an answer in the documentation... So, my question. Since I have the check_mk agent installed in the monitored machine, can I use the ...
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1k views

Check_mk and wildcards

I've successfully set up check_mk 1.28 via OMD, which I know supports wildcards and regex for assignment of hosts/services to groups. I've tested the wildcards in the search box successfully, but the ...
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1 answer
548 views

check_mk_agent hangs when running cluster check ONLY when triggered by network

My check_mk server connects to several RHEL nodes which have installed check_mk_agent (version 1.2.4p3). A group of these nodes belong to a pacemaker cluster. The check_mk agent is configured by ...
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check_mk send notifications based on service status in Nagios

I have some services status in "Warning", "Unknown" and "Critical". I would like to send notifications for "Warnings" and "Unknown" every hour and for "Critical" every 10 minutes. Right now my set up ...
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Monitoring AWS instance with Check_mk

I installed OMD V1.20 (CentOS 7.x) with the help of this tutorial. I was able to successfully add the server itself as host and it showed some 18 processes and is running fine. After that, I ...
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719 views

Cannot connect to remote site: Authentication to web service failed

I've installed Check_MK 1.2.8p9 (an open monitoring distribution of Nagios) on two servers and I'm attempting to connect the second host to the master. On the Distributed Monitoring WATO page I've ...
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Dumping Splunk Events

We have a nagios instance set up so that using MK-Livestatus and splunk, we are able to push all of nagios's alerts through livestatus's socket thanks to a call from splunk. However, splunk is now ...
2 votes
1 answer
2k views

Check_MK: How do I create Notifications based on groups of services instead of just one service?

I'd like to be able to create a notification that alerts based on the availability of a group of services, instead of just one threshold. For example, say I have 10 AWS servers that all do the same ...
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317 views

How can I trigger an instant rerun of Check_MK data collection through Icinga?

I am using Check_MK to generate checks to make Icinga (a Nagios fork) monitor a bunch of machines. After starting up Icinga, after some time, Check_MK starts to collect data from the configured ...
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How can I get custom logfile checks working with Windows check_mk_agent?

Simple example: I have a logfile in C:\users\user\test.log, containing a line of text: crit I have check_mk_agent.exe installed in Program Files (x86)\check_mk, with check_mk.ini installed in the ...
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389 views

Is possible monitor the VPN's bandwidth with Check_MK? How?

I would like monitor the bandwidth in the VPN of Juniper SSG5 with Check_MK. Is possible? How? For the moment I am monitoring the status with the check automatic (check_mk-juniper_screenos_vpn). ...
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600 views

Obtaining pfSense graphs on another server

I'm trying to be able to get the traffic and system graphs from a pfSense router, which is only available on a specific management IP, onto my monitoring server in some way. So far I've thought of: ...
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4k 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 ...
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1 answer
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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 ...
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7k views

Icinga 2 vs Nagios 4 vs Shinken 2 : is there Performance Benchmarking comparison available?

I am not able to find out any link that displays the benchmarking report for the cores. We have to monitor 50,000 hosts and 30 services per host per minute host check : icmp per 5 minute service ...
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567 views

How to get check_mk BI aggregation status when tab is collapsed in tree?

Check_mk provides the script check_bi_local.py to make a nagios check from the status of the BI tool. The issue is that this only returns the elements of the view that are expanded in the tree. Is ...
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463 views

Restart Service If TCP Check Fails or Timeout

We are using check_mk WATO to monitor our production infrastructure and all the services. Currently, we have HTTP checks for our application. We would like to have an event driven monitoring system ...
4 votes
2 answers
4k 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 ...
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Nagios change threshold values

I'm using nagios checkmk 1.2.2 to monitor some hosts. How can I adjust specific smart values per host so they won't create a critical alert? For example: CRIT - Reallocated sectors: 2CRIT I only ...
1 vote
2 answers
7k views

Check to ping google from host in check_mk using WATO

I'm new to check_mk and got it installed using OMD (last daily version). I'm trying to create a check so my hosts ping google to see if their network connection to the internet is working. I thought ...
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1 answer
837 views

How to exempt weekends from freshness checks in Nagios

Thank you, serverfault, for giving me the answer to how-does-an-administrator-generalize-alerting-when-an-event-doesnt-happen. Now, I only want to check the freshness of these passive services Monday ...
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1 answer
2k views

Updated OMD and Check_MK Agent returns Null

I updated OMD to the current version using the following: omd update <site> Everything appears to update fine, but now my servers with the check_mk agent installed show (null) and I do not ...
2 votes
2 answers
4k views

snmpbulkwalk hangs at certain OIDs

While setting up some hosts in Check_MK for SNMP-only monitoring I've found some hosts where snmpbulkwalk appears to 'hang' and then timeout while processing a certain OID. eg: OMD[prod]:~$ ...
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Set SNMP Community with check_mk WATO

I'm using check_mk with WATO on an Ubuntu server running Open Monitoring Distribution 1.0. So far, so good! I'm trying to configure the snmp community for check_mk to pull info from some of our HP ...
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6k views

Where does check_mk store configuration files?

I'm a little new to the check_mk/nagios/monitoring world. I'm experimenting with omd 1.0 as an easy way to get it all set up and working on an Ubuntu host. So far, things are great! With all the work ...
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not able to copy socket/inode file

I having the file called 'live' in ubuntu, this is the socket/inode type file. This file has the permission as srw-rw-r-- live I want to create the copy of the file. I not able to copy it using cp ...
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13k views

What is a check_mk sticky comment when acknowledging a host/service?

I wanted to attach a comment to a system that is being monitored with Nagios. I prefer using check_mk as GUI. Now I stumbled across this: I can set a comment as sticky and/or persistent. So I asked ...
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Connection refused when doing telnet to windows machine

I am doing telnet to windows host from Linux to list Check_mk_agent data. but its giving me following output. [root@myhost ~]# telnet winhost 6556 Trying xxx.xx.xx.x... telnet: connect to address xxx....
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split array element with special character

I would like to write a bash script (that would be better if the script is in python) which executes a Perl script ( https://github.com/MangeshBiradar/Check_mk/blob/master/check_jenkins_jobs.pl) ...
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1k views

Check_mk check for perl plugin which is at check_mk_agent side

I have one perl script I want to use it as a nagios plugin. Here is the github location for this script https://github.com/MangeshBiradar/Check_mk/blob/master/check_jenkins_jobs.pl I want to use this ...