VerneMQ CloudWatch Metrics plugin

This is a VerneMQ plugin that will send broker metrics to Amazon CloudWatch.

Prerequisites

A recent version of Erlang/OTP(Not tested on versions previous to 19).
VerneMQ version 1.7.0 or superior.

How to compile this plugin

This project uses Rebar3 as a build tool and can be compiled running:

rebar3 compile

How to enable the plugin on VerneMQ

Manually enable

vmq-admin plugin enable --name=vmq_cloudwatch_metrics --path=<PathToYourPlugin>/_build/default/lib/vmq_cloudwatch_metrics

Permanently enable (On VerneMQ start)

Add the following to the vernemq.conf file.

plugins.vmq_cloudwatch_metrics = on
plugins.vmq_cloudwatch_metrics.path = <PathToYourPlugin>/_build/default/lib/vmq_cloudwatch_metrics

Configuration

The following settings are available for this plugin:

vmq_cloudwatch_metrics.cloudwatch_enabled Defines if the plugin will send the metrics to CloudWatch or not. Dafault “off”.
vmq_cloudwatch_metrics.interval The publish interval in milliseconds. Defaults to 60000(1 minute).
vmq_cloudwatch_metrics.namespace CloudWatch namespaces are containers for metrics. Defaults to “VerneMQ”.
vmq_cloudwatch_metrics.aws_access_key_id The AWS Key. See http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html.
vmq_cloudwatch_metrics.aws_secret_access_key The AWS secret key for connecting to CloudWatch. See http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html.
vmq_cloudwatch_metrics.aws_region The AWS region. Defaults to “us-east-1”.

Parameters can be defined in the vernemq.conf file.

vmq_cloudwatch_metrics.cloudwatch_enabled = on
vmq_cloudwatch_metrics.interval = 60000
vmq_cloudwatch_metrics.namespace = "VerneMQ"
vmq_cloudwatch_metrics.aws_access_key_id = "MYACCESSKEY"
vmq_cloudwatch_metrics.aws_secret_access_key = "MYSECRETACCESSKEY"
vmq_cloudwatch_metrics.aws_region = "eu-west-1"

Tip: Configuration parameters can also be changed at runtime using the vmq-admin script.

TODO

Add tests.
Add CI using Travis.