Preparing the configuration files for running with Nagios

About this task

In these examples, the Nagios installation directory may vary; typically it is in /usr/local/nagios, but it may not be this on all installations. Similarily, the place to add configuration files Nagios directory is typically, but not always, /usr/local/nagios/etc/objects, which you may need to create if it has not been created by the installation.

You can use commands defined in jmx_commands.cfg file to monitor CXF services, Camel Context and Routes, ActiveMQ Broker, Topics and Queues.

In order to do it, you do not need to change template files jmx_commands.cfg, cxf.cfg, camel.cfg, activemq.cfg which already contain all check definitions and commands for these entities. For your own application, we suggest you add your own new_host.cfg to monitor your own cxf service, camel route, and so on, using cxf_host.cfg, camel_host.cfg and activemq_host.cfg as samples.

The process is as follows:

Procedure

Define jolokia_host in /etc/hosts - this name is used in subsequent files, rather than hard-coding in the ip address.
For configuration templates jolokia_host means the host that has the Jolokia agent installed and would be monitored by the jmx4perl plugin. For example:
```
192.168.1.101 jolokia_host
```
Put the configuration files into the configuration folder, for example, /usr/local/nagios/etc/objects/ or /etc/nagios3/etc/objects/.
The configuration files are in <TalendRuntimePath>/add-ons/adapters/nagios. Copy template and sample configuration files from this directory into, for example, /usr/local/nagios/etc/objects/ or /etc/nagios3/etc/objects/:
```
# cp -f <TalendRuntimePath>/add-ons/adapters/nagios/template/*.cfg /usr/local/nagios/etc/objects/
```
```
# cp -f <TalendRuntimePath>/add-ons/adapters/nagios/sample/*.cfg /usr/local/nagios/etc/objects/
```
Add the command configuration file to the existing nagios.cfg. Here are some examples, which depend on where your installation puts config files:
- In /usr/local/nagios/etc/nagios.cfg, add this line:
```
cfg_file=/usr/local/nagios/etc/objects/jmx_commands.cfg
```
- Or in /etc/nagios3/nagios.cfg add this line:
```
cfg_file=/etc/nagios3/etc/objects/jmx_commands.cfg
```
[Note: this step is not needed for samples, the shipped files are sufficient] Create host definitions file, for example new_host.cfg, by, for example, copying jmx_host.cfg. Note that you may need to edit it and add applications-specific service definitions.
[Note: this step is not needed for samples, the shipped files are sufficient] Add the file to the existing nagios.cfg, here are some examples, which depend on where your installation puts config files:
- In /usr/local/nagios/etc/nagios.cfg add this line:
```
cfg_file=/usr/local/nagios/etc/objects/new_host.cfg
```
- Or in /etc/nagios3/nagios.cfg add this line:
```
cfg_file=/etc/nagios3/etc/objects/new_host.cfg
```

Define macros which will be used by jmx_commands.cfg in the existing resource.cfg; here are some examples, which depend on where your installation puts config files:

In /usr/local/nagios/etc/resource.cfg add these lines:

# set the path which jmx4perl plugin installed
$USER5$=/usr/local/src/jmx4perl/scripts
# set the path to where to find configuration files
$USER6$=/usr/local/nagios/etc/objects

Or in /etc/nagios3/resource.cfg add these lines:

# set the path which jmx4perl plugin installed
$USER5$=/usr/local/src/jmx4perl/scripts
# set the path to where to find configuration files
$USER6$=/etc/nagios3/etc/objects

Then, restart Nagios for the changes to take effect.
```
# service nagios restart
```
Note: The name of this service may vary, depending on which package you used to install Nagios, so it may be called, for example, nagios3, instead of nagios.

Preparing the configuration files for running with Nagios - 7.3

Talend ESB System Management Integration User Guide

About this task

Procedure