MK Livestatus. Accessing Nagios data with “unixcat” and LQL.


In recent posts we have installed check_mk in Centos / Redhat 6 or Centos / Redhat 7. Installing full check_mk integrates MK Livestatus component although it is also possible to install it separately to access a Nagios standalone data.

The most important thing is to know initially that data can be obtained and the format of these. We will use a utility included with MK Livestatus for Nagios data access, unixcat. Then in another post we will see how to access data through one of the APIs that includes MK Livestatus (Python).

Continue reading “MK Livestatus. Accessing Nagios data with “unixcat” and LQL.”

Nagios Core 4 + PNP4Nagios + Check_mk + Nagvis in CentOS 7 – Redhat 7

Notice, 12/10/2015. If you don’t need Nagios 4 and you are happy with Nagios 3 version I think the best option today is test and use Check_MK Raw Edition (CRE). This free edition is easy to install and includes all software in this post updated. The only reason to continue with this post in my opinion is that CRE not include Nagios 4 to date.


This post is a tranlate from original in spanish from

Continue reading “Nagios Core 4 + PNP4Nagios + Check_mk + Nagvis in CentOS 7 – Redhat 7”

Monitoring vSphere ESXi servers with Nagios and check_mk plugins.

Since 1.2.3i1 version, check_mk include a very interesting plugin to check vSphere ESXi servers. We can read documentation about this fantastic plugin in official check_mk page.

Check_mk vSphere plugin allow to access ESXi data directly from ESXi servers or via vCenter.

Let’s see how to do the configuration of the vSphere ESXi, and vCenter servers check_mk plugin.

Continue reading “Monitoring vSphere ESXi servers with Nagios and check_mk plugins.”

Nagios 4 (core) + Check_mk + pnp4Nagios + Nagvis


Since Nagios 4 version release there was an important addon update pending. Recently, check_mk released its innovation version check_mk-1.2.5i2 including MK Livestatus with compatibility with Nagios Core 4. We need therefore check_mk-1.2.5i2 or higher to run check_mk with Nagios Core 4.


In aboutmonitoring we are going to build and test a monitoring system with probably the more interesting and powerful utilities for Nagios. We need compile Nagios 4 because there is not packages in usual distros yetand because we prefer the lastest versions for testing. If you are looking for to install same software in Centos 7 look at Nagios Core 4 + PNP4Nagios + Check_mk + Nagvis in CentOS 7 – Redhat 7

Software components used in this test:

Tested with SELINUX disabled!!!

Continue reading “Nagios 4 (core) + Check_mk + pnp4Nagios + Nagvis”