zabbix-rabbitmq-plugin

A Zabbix plugin for monitoring RabbmitMQ

Installation

This plugin can be setup and run from the Zabbix server or on the RabbitMQ server itself.

1. Download the source to your Zabbix scripts path

Example path: /etc/zabbix/scripts

cd /etc/zabbix/scripts
git clone https://github.com/bernielomax/zabbix-rabbitmq-plugin.git

2. Setup the zabbix_agentd.d file

Copy the zabbix-rabbitmq.conf file to the "zabbix_agentd.d" folder

cp zabbix_agentd.d/zabbix-rabbitmq.conf /etc/zabbix/zabbix_agentd.d/

Edit the file to make sure that the Zabbix path is correct

UserParameter=rabbitmq.discover.nodes[*],/etc/zabbix/scripts/zabbix-rabbitmq-plugin/zabbix-rabbitmq-plugin --hostname $1 discover --cluster-nodes
UserParameter=rabbitmq.discover.queues[*],/etc/zabbix/scripts/zabbix-rabbitmq-plugin/zabbix-rabbitmq-plugin --hostname $1 discover --queues
UserParameter=rabbitmq.check.queue[*],/etc/zabbix/scripts/zabbix-rabbitmq-plugin/zabbix-rabbitmq-plugin --hostname $1 check queue --vhost $2 --name $3 --metric $4
UserParameter=rabbitmq.check.node[*],/etc/zabbix/scripts/zabbix-rabbitmq-plugin/zabbix-rabbitmq-plugin --hostname $1 check node --name $2 --metric $3

3. Restart Zabbix

service zabbix restart

4. Set the plugin configuration

The config.yml contains the settings used to connect to the RabbitMQ server. Below explains how to setup your config file.

The "Defaults" section

The defaults section contains the settings to be applied to all hosts.

The "Hosts" section

The hosts section is used to override the default settings for any particular host defined.

Authentication

Username & Password as you would expect.

TTL

How long to store retrieved API metrics in the cache for (in seconds).

Port

The port that the RabbitMQ API is listening on

hosts:

  #myhost:
  #  username: myuser
  #  password: mypass

defaults:
    username: bernie
    password: itsjustbernie!
    port: 15672
    ttl: 45

5. Import the template

The zabbix-rabbitmq-template.xml file contains some basic discovery items, triggers and graphs. The template can be imported by going to the "Configuration/Templates" page in the Zabbix web console and by clicking the "import" button.

IMPORTANT After importing the template make sure you set the the RabbitMQ server hostname on both of the newly imported discovery rules.

Custom Zabbix items

You can add additional custom items to be monitored. This plugin retrieves all and stores all information when performing a RabbitMQ API call. The response JSON data is then flattened and stored in "dot" separated key value store in the cache. The zabbix plugin uses the cache until the TTL expires and will then refresh the data by performing another API call.

Zabbix item examples

Below are some examples of the kind of Zabbix item keys that can be used for this plugin:

For a node

rabbitmq.check.node[my-host.example.com,rabbit@my-host,disk_free]

For a queue

rabbitmq.check.queue[my-host.example.com,/,myqueue,consumers]

Adding additional Zabbix items

The last column in the previous item key examples references the dot separated value that was retrieved from the associated RabbitMQ API call (in the case above its either a node a queue call). Below is an example of a RabbitMQ API response snippet with an additional trailing example of how the plugin mutates the key values and stores them in the cache for Zabbix to report on.

The "/api/nodes" returns the following snippet

{
  partitions: [ ],
  os_pid: "26362",
  fd_used: 349,
  fd_total: 65536,
  sockets_used: 312,
  sockets_total: 58890,
  mem_used: 3449219600,
  mem_limit: 40515030220,
  mem_alarm: false,
  disk_free_limit: 50000000,
  disk_free: 1789444382720,
  disk_free_alarm: false,
  proc_used: 8407,
  proc_total: 1048576,
  statistics_level: "fine",
  uptime: 10271980381,
  run_queue: 0,
  processors: 16,
  exchange_types: [
    {
      name: "topic",
      description: "AMQP topic exchange, as per the AMQP specification",
      enabled: true
    },

Would be flattened into the following and stored in the cache

partitions=""
os_pid= 26362
fd_used=349
fd_total=65536
sockets_used=312
sockets_total=58890
mem_used=3449219600
mem_limit=40515030220
mem_alarm="false"
disk_free_limit=50000000
disk_free=1789444382720
disk_free_alarm="fine"
proc_used=8407
proc_total=1048576
statistics_level="fine"
uptime=10271980381
run_queue=0
processors=16
exchange_types.0.name="topic"
exchange_types.0.description="AMQP topic exchange, as per the AMQP specification"
exchange_types.0.enabled="true"

The cache schema

The cache resides in a SQLite file called zabbix-rabbitmq-cache.db. Below is an example of the schema.

CREATE TABLE CACHE(
   ID               INTEGER      PRIMARY KEY,
   HOSTNAME         CHAR(50)     NOT NULL,
   METHOD           CHAR(50)     NOT NULL,
   DATA             TEXT, 
   TIMESTAMP        INT          NOT NULL
);

License

MIT License

Copyright (c) 2016 Justin Pye

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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