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Check_mk Nagios: Role and Advantages

by | Sep 25, 2022

Let us take a closer look at the check_mk Nagios and the role of Check mk in Nagios with the support of Server management support services at Bobcares.

 

Check_mk and its role in Nagios

check_mk nagios

It is a general-purpose Nagios plugin for data retrieval. Check_mk takes a novel way of data collection from operating systems and network components.

 

check_mk is a data plugin that replaces NRPE, NSClient, check SNMP, and other data plugins. It uses a completely new technique of gathering data from hosts and network components that is both fast and simple to configure – especially in big monitoring situations. We can integrate Check_mk easily into any current Nagios 3 installation.

 

In the current version, check mk contains its own Windows agent that supports the majority of NSClient features as well as native evenlog log monitoring.       

 

check_mk is a new general-purpose Nagios plugin for data retrieval. Check mk takes a novel way to data collection from operating systems and network components.

 

Advantages of Check_mk

It replaces NRPE, check by ssh, NSClient, and check SNMP and has numerous advantages, the most noteworthy of which are:

  • Firstly, Significant reduction in Nagios host CPU use.
     
  • Items to be checked on hosts are automatically inventoried.
     
  • After that, Nagios configuration files will generate automatically.
     
  • Cluster management with no service Internet Protocol (IP) address.
     
  • RRD updates are extremely fast.
     
  • As a standalone executable, we can create a configuration-free Windows agent.
     
  • Finally, convenient logfile monitoring, including Windows Eventlog.

The larger the Nagios installation, the more useful it is to obtain these approvals. Indeed, check_mk enables us to construct a monitoring system capable of performing more than 20.000 checks per minute on a single Nagios server for the first time.

 

Check MK necessitates the use of both a client-side monitoring agent and a server-side monitoring system. The server-side monitoring system contacts the host’s agent and sends the check results to the monitoring core (often Nagios, although there is also a new core to Check MK).

 

Check MK differs from other passive checks (such as NRPE) in that the results of all checks are sent to the monitoring system in a single package. If we run the agent in a shell on a host, we will get something like this:

 

➜ ~ check_mk_agent
<<>>
/dev/mapper/MyStorage-rootvol ext4 15350768 13206900 1341052 91% / dev devtmpfs 4022348 0 4022348 0% /dev plus many more lines ....

 

As a result, the server side of Check_mk divides these packages into separate checks that the Nagios core can handle.

 

Check MK will not replace existing checks as it doesn’t care about them. It will only add to the problem.

 

Check MK does not require WATO to be configured. WATO is simply a configuration interface. Plain text files can also be used for configuration. We should begin with WATO and examine the configuration it has generated.

 

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Conclusion

To conclude we have now learned more about the check_mk Nagios, its configurations, the advantages of using the Check_mk, and many more with the support of our Server management support services.

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