Release of Centreon Engine 1.3.0 & Centreon Broker 2.2.1


Release of Centreon Engine 1.3.0

This new version implements a key feature, the use of connectors. The main purpose of these daemons (programs that are run in background) is to provide better execution context to the check plugins. For instance:
•    SSH connector: this component is a connection multiplexer. It offers the reduction of open connections and it also makes them persistent
•    Perl connector : this component embeds a Perl interpreter and somewhat enhances the execution performances of plugins written in Perl
The other noticeable features are the following:
•    Replacement of the Qt library by centreon-clib and libxerces (for the XML part)
•    A few fixes
The detailed (technical) changelog is available at this URL :

Release of Centreon Broker 2.2.1

This new version enhances overall performances thanks to the implementation of SQL transactions. Basically, the concept of these transactions is to group queries in order to generate less input/output on the server. When transactions are used, the executed queries affect a virtual copy of the database. It is only at the end of this operation that data is actually written in the disk and  made accessible to users. This mechanism highly enhances the input/output situation of the storage device.

The other noticeable features are the following:
•    Non-process of host/service statuses that are too old (next_check < now)
•    New statistics module for retrieving information such as the list of loaded modules, processing speed, connection status, etc…
•    Deactivation of the SIGCHLD signal (less back and forth signals between kernel-space and user-space)
•    Rotation of log files (for limiting storage issues)
•    Possibility to write cbmod logs directly in the Centreon Engine/Nagios logs
•    Possibility to disable log synchronization on the disk (*sync* system calls)
•    Stalled callbacks with Centreon Engine/Nagios (lesser restarting time)
The detailed (technical) changelog is available at this URL:

Centreon CLAPI (Manage Centreon configuration) 1.4.0 released

The Centreon CLAPI module (Centreon Command Line API) is a tool to manage all configuration of Centreon server objects’. Using command line from a terminal, it’s possible to add/modify/delete configuration objects of the scheduler (Hosts, Services, contacts, Groups, etc.), the access control list (ACL) of Centreon GUI or manage schedulers and brokers.
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Centreon Enterprise Server makes monitoring for all Windows-based applications and environments easy.

Centreon Enterprise Server (CES) now includes an agentless-monitoring solution dedicated to Windows-based applications and environments. Based on Microsoft’s Windows Management Instrumentation (WMI) API, this brand new tool will save monitoring team time and efforts deploying performance and availability software.

Centreon Enterprise Server: monitoring made easy

In 2011 Merethis released CES (Centreon Enterprise Sever) a GNU / Linux distribution dedicated to a Centreon based monitoring platform based on CentOS and Red Hat operating systems. CES provides pre-configured out-of-the-box tools to automate the monitoring of essential system resources deploy alert management and business service management and set up your monitoring portal and console.

On top of that you can subscribe to other Merethis products (Centreon BAM, Centreon BI and Centreon Map). CES integrates a few more specific extensions such as pre-configured models and plug-in developed by Merethis team. They are dedicated to OS, hardware, network components, and middleware. You can easily set up a proper monitoring platform following some good practices and using the templates that you can find within CES.

Currently subscriptions are available through Merethis and its consulting partners. To know more about the CES offers, please go online on the Centreon website

Centreon Entreprise Server WMI Monitoring tool

Windows Management Instrumentation is the implement of Web-Based Entrerpise Management (WBEM) by Microsoft©. WBEM deals with system resources management and monitoring.

Working on WMIC (Windows Management Instrumentation Command-line) and WQL (Windows management instrumentation Query Language) requests, Merethis R&D teams have developed new tools supported by Centreon Enterprise Server making it possible to build custom agentless-monitoring solutions for all Windows-based applications and environments or based on WBEM

CES can collect applicative and system data without additional components to install on Microsoft© Windows servers. As a built in tool with CES, it makes the deployment and monitoring management easy for Microsoft© Windows environment.

MERETHIS has worked on two types of plugins that can: :

  • monitor some elements of system :
    • service states when auto-start or service operating ;
    • CPU usage rate ;
    • disk usage rate ;
    • event logs monitoring ;
    • files monitoring (presence by name, extension, age, size, etc) ;
    • bandwidth usage rate in network interface ;
    • virtual or real memory usage rate (paging file) ;
    • process monitoring (number, consummation, memory, execution argument, etc) ;
  • monitor some applications using WBEM such as MS Active Directory, MS Exchange, MS IIS, MS SQL Server, MS Sharepoint, MS HyperV, Citrix, etc.

The second plug-in is extensible and helps the Microsoft© Windows admin to monitor the application he wants. Indeed, the plug-in uses all collected information that has been described in XML files. If the admin knows perfmon (performance monitor) and how WMI works, he can extract all information he wants and monitor them.

To sum it up, Centreon WMI tools make the automation of monitoring tasks in Microsoft© Windows environment easy customizing control rules and options. Using WMI tool, no more need for local deployment, or tedious configuration…

Incoming search terms:

  • Centreon windows
  • wmi monitoring

Centreon Engine

Centreon Engine improves overall performance compared to other monitoring engines and brings new features in the latest stable version.

By changing the algorithm, the external command executions, macro generation, the monitoring engine and configuration file parsing have been improved.
Moreover, Centreon Engine comes with huge improvements for the log management. The log system has been rewritten to make it more generic and for better performance. It is thus easier for the developer to use and faster for the user.
Centreon Engine now brings Web Services in SOAP. They allow to change the basic configuration objects without reloading the whole Engine. Therefore, configuration changes do no longer require the monitoring system to shutdown, which was quite cumbersome on large installation systems.
Merethis developers have improved the plugin execution too by changing the fork process and adding the “connectors” concept.
Now, only one single daemon runs multiple checks. Thus, it requires less resources in terms of processor load and data transmission (I/O). Both the connectors and the existing plugin execution system can run at the same time. The first connectors are under development and will be available in the future releases on Centreon Engine.

Version 1.1 of Centreon Engine is already available for downloading. Several versions will soon be released as communicated in the (very ambitious!) roadmap available on the Centreon website.
The next version (1.2) is currently under  development. It will provide additional features such as Web services in replacement of external command line.