Zabbix plugin
=============

The Zabbix plugin actively sends information to a Zabbix server like:

- Ceph status
- I/O operations
- I/O bandwidth
- OSD status
- Storage utilization

Requirements
------------

The plugin requires that the *zabbix_sender* executable is present on *all*
machines running ceph-mgr. It can be installed on most distributions using
the package manager.

Dependencies
^^^^^^^^^^^^
Installing zabbix_sender can be done under Ubuntu or CentOS using either apt
or dnf.

On Ubuntu Xenial:

::

    apt install zabbix-agent

On Fedora:

::

    dnf install zabbix-sender


Enabling
--------
You can enable the *zabbix* module with:

::

    ceph mgr module enable zabbix

Configuration
-------------

Two configuration keys are vital for the module to work:

- zabbix_host
- identifier (optional)

The parameter *zabbix_host* controls the hostname of the Zabbix server to which
*zabbix_sender* will send the items. This can be a IP-Address if required by
your installation.

The *identifier* parameter controls the identifier/hostname to use as source
when sending items to Zabbix. This should match the name of the *Host* in
your Zabbix server.

When the *identifier* parameter is not configured the ceph-<fsid> of the cluster
will be used when sending data to Zabbix.

This would for example be *ceph-c4d32a99-9e80-490f-bd3a-1d22d8a7d354*

Additional configuration keys which can be configured and their default values:

- zabbix_port: 10051
- zabbix_sender: /usr/bin/zabbix_sender
- interval: 60

Configuration keys
^^^^^^^^^^^^^^^^^^^

Configuration keys can be set on any machine with the proper cephx credentials,
these are usually Monitors where the *client.admin* key is present.

::

    ceph zabbix config-set <key> <value>

For example:

::

    ceph zabbix config-set zabbix_host zabbix.localdomain
    ceph zabbix config-set identifier ceph.eu-ams02.local

The current configuration of the module can also be shown:

::

   ceph zabbix config-show

Manually sending data
---------------------
If needed the module can be asked to send data immediately instead of waiting for
the interval.

This can be done with this command:

::
    ceph zabbix send

The module will now send its latest data to the Zabbix server.

Debugging
---------

Should you want to debug the Zabbix module increase the logging level for
ceph-mgr and check the logs.

::

    [mgr]
        debug mgr = 20

With logging set to debug for the manager the plugin will print various logging
lines prefixed with *mgr[zabbix]* for easy filtering.