setting up a basic mqtt broker on aws ec2

[andrew stillie]

Hi 

I have previously set up an mqtt server on my home network using mosquito on a ubuntu machine.

I used an mutt client on my smart phone to publish and subscribe to topics.  It all worked well.

Now I would like to expand my system a little and have the mosquito broker on my was ec2 instance.

Is this possible? If so can someone offer some advice or point me at a tutorial?

regards

Andy

[Karl Palsson]

Remember that EC2 is just another computer, it just happens to be
one that's not plugged in in your home. So, if you have already
setup mosquitto on ubuntu at home, it's exactly the same for
setting up mosquitto on ubuntu on ec2.

Cheers,
Karl P

[andrew stillie]

Thanks for replying Karl.

My mqtt android app expects a url username and password.   Which details should I supply here ?

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[Hans Jespersen]

Except for elastic IPs (which you will need or your IP address with change after each reboot), and security groups (which you need to setup or hackers will spam your MQTT ports), and that storage is ephemeral (unless you also provision EBS), and that you will need a SSH key to login and administer the machine to even start. Also, we warned that Amazon charges for output bandwidth so if you do a lot of subscribing from an EC2 hosted instance you can run up bandwidth charges far greater than your EC2 cpu/hour charges.

-hans 

[andrew stillie]

I am only trying to do this for educational purposes.  My bandwidth will be very low initially.  I switched to free AWS as I could not get port forwarding to work reliably from my home router.  Maybe I need to invest in a better router.

I would like to get this working on the AWS if possible.

Anyone got an example tutorial I could have a look at.

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Regards,

Andrew Stillie

[Hans Jespersen]

What is not working today? I don't know of a tutorial but if you have specific issues I might be able to help. I have successfully setup another MQTT broker in AWS (not mosquitto) and apart from the issues I listed, it's straight forward. Do you have an Amazon Linux AMI running with a security key provisioned and SSH access to a shell on the virtual machine?

-hans

[Paul Fremantle]

I use a userdata.sh script to install and run mosquitto. (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html)

Here is the script I use, which is also installing a simple python program that reads data from a website and publishes it to a topic.

This is doing more than you need, but you can get the idea. For example you could check out a mosquitto.conf from git and then move it to the right place.

Paul

#!/bin/bash
	sudo apt-get update
	sudo apt-get install python2.7
	sudo apt-get install python2.7-dev
	sudo apt-get install mosquitto -y
	sudo apt-get install python-setuptools -y
	sudo easy_install pip
	sudo pip install mosquitto
	sudo apt-get install git -y
	sudo pip install httplib2
	git clone https://github.com/pzfreo/auto-deploy-node-js.git
	cd auto-deploy-node-js/tfl
	python tflrepub.py

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Paul Fremantle

Part-time PhD student - School of Computing

email: paul.fr...@port.ac.uk, pa...@fremantle.org

twitter: pzfreo / skype: paulfremantle / blog: http://pzf.fremantle.org

Co-Founder, WSO2
Apache Member and Committer
07740 199 729

[andrew stillie]

Hi Hans,

I would like to know how to configure the mosquitto on my ec2 so that I can publish and subscribe to topics from my mqtt android app.

When I ssh to my ec2 and type mosquitto I get a message reporting mosquitto is already running.

I understand that I will need security to prevent spam, but initially I need to learn with something simple.

Thank you
Andy

[Hans Jespersen]

Have you setup a aws security group that allows external IP addresses to connect on port 1883 to your ec2 instance that is running mosquitto?

[andrew stillie]

No. I have done something similar to open ports 8080 for my node server I am playing with.

On 23 Apr 2016 08:08, "Hans Jespersen" <hans.je...@gmail.com> wrote:

Have you setup a aws security group that allows external IP addresses to connect on port 1883 to your ec2 instance that is running mosquitto?