120 lines
4.0 KiB
ReStructuredText
120 lines
4.0 KiB
ReStructuredText
===========================
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Nagios Plugin Configuration
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===========================
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Configure Access to Nagios
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--------------------------
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The following should be set in **/etc/vitrage/vitrage.conf**, under [nagios] section:
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+------------------+---------------------------------------------------------+-------------------------------+
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| Name | Description | Default Value |
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+==================+=========================================================+===============================+
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| user | Nagios user | |
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+------------------+---------------------------------------------------------+-------------------------------+
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| password | Nagios password | |
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+------------------+---------------------------------------------------------+-------------------------------+
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| url | Nagios url for querying the data | |
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+------------------+---------------------------------------------------------+-------------------------------+
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| config_file | Nagios configuration file | /etc/vitrage/nagios_conf.yaml |
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+------------------+---------------------------------------------------------+-------------------------------+
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| changes_interval | Interval of checking changes in the configuration files | 30 seconds |
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+------------------+---------------------------------------------------------+-------------------------------+
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**Note:** To avoid issues with paging, it is recommended for the URL to be of
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the form *http://<nagios site url>/cgi-bin/status.cgi*, which returns all the
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nagios tests.
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Nagios access configuration - example
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+++++++++++++++++++++++++++++++++++++
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When installing Nagios on devstack with IP 10.20.30.40, following
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the instructions here_, this would be the correct configuration:
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.. _here: https://github.com/openstack/vitrage/blob/master/doc/source/nagios-devstack-installation.rst
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::
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[nagios]
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user = omdadmin
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password = omd
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url = http://10.20.30.40:54321/my_site/nagios/cgi-bin/status.cgi
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config_file = /etc/vitrage/nagios_conf.yaml
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Configure Nagios Host Mapping
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-----------------------------
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Nagios tests are defined in a table with columns: Host, Service, Status, Last
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Check, etc.
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A Nagios "host" is not necessarily a resource of type "nova.host". It can also
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be an instance, switch, or other resource types. **nagios_conf.yaml** is used
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to map each Nagios host to a Vitrage resource.
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Format
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++++++
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::
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nagios:
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- nagios_host: <Host as appears in Nagios>
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type: <resource type in Vitrage>
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name: <resource name in Vitrage>
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- nagios_host: <Host as appears in Nagios>
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type: <resource type in Vitrage>
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name: <resource name in Vitrage>
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...
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Note that for ease of use, there is support for wildcards in the "nagios_host"
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value, and references to the actual value for a given wildcard match. See
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**Example 2** below.
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Example 1
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+++++++++
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The following example is for a system with two hosts. In nagios they are named
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*compute-0, compute-1*, and in nova they are named *host-1, host-2*.
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::
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nagios:
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- nagios_host: compute-0
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type: nova.host
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name: host1
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- nagios_host: compute-1
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type: nova.host
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name: host2
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Example 2
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+++++++++
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The following file will
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- map all Nagios hosts named host-*<some_suffix>* or *<some_prefix>*-devstack
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to resources of type nova.host with the same name.
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- map all Nagios hosts named instance-*<some_suffix>* to nova.instance
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resources.
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Note how the *${nagios_host}* references the instantiation of the regex defined
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in nagios_host.
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::
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nagios:
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- nagios_host: host-(.*)
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type: nova.host
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name: ${nagios_host}
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- nagios_host: (.*)-devstack
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type: nova.host
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name: ${nagios_host}
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- nagios_host: instance-(.*)
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type: nova.instance
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name: ${nagios_host}
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