Tuesday, March 19, 2013

Mosquitto installation on Centos

Mosquitto installation on Centos

Mosquitto is an open source (BSD licensed) message broker that implements the MQ Telemetry Transport protocol version 3.1. MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for "machine to machine" messaging such as with low power sensors or mobile devices such as phones, embedded computers or microcontrollers like the Arduino.

Add the CentOS mosquitto repository to YUM's list of repositories :

 cd /etc/yum/yum.repos.d

wget http://download.opensuse.org/repositories/home:/oojah:/mqtt/CentOS_CentOS-5/home:oojah:mqtt.repo

 yum update

yum install mosquitto

If you are getting the error :

useradd: unknown group mosquitto
warning: user mosquitto does not exist - using root
warning: group mosquitto does not exist - using root

This can be fixed using manually creating the missing user group details.

  useradd  mosquitto
  groupadd mosquitto

You can find the configuration file at :

Finally start mosquitto as a daemon with the line, /etc/init.d/mosquitto start

You get the following status :
# /etc/init.d/mosquitto start
Starting Mosquitto MQTT broker [ OK ]

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