Swarm on EC-2

swarmec2.txt

How to get started with a swarm-setup on EC-2
=============================================


Launch instance
---------------

Switch to the close region (EU West for us).

Start an EC-2 instance, I selected Ubuntu 12 server, Small instance type.
I created a new key pair, downloaded it and installed them on my Mac by
doing 
mac:$chmod 600 swarm.pem (ssh is a bit picky on access settings of the .pem-files)
mac:$ssh-add swarm.pem

Now launch the instance - no other special options needed.

Check the instance in the control panel
make a host lookup on

mac:$host ec2-46-51-160-208.eu-west-1.compute.amazonaws.com
ec2-46-51-160-208.eu-west-1.compute.amazonaws.com has address 46.51.160.208

Aha, the server runs at IP 46.51.160.208!

Add a username-password user on the instance
--------------------------------------------

Since you have the key on your computer already installed, it's easy to get into the instance via ssh

mac:$ssh -i swarm2.pem ubuntu@ec2-46-51-160-208.eu-west-1.compute.amazonaws.com

ec2:$sudo add-apt-repository -y ppa:webupd8team/java
ec2:$sudo add-apt-repository -y ppa:cassou/emacs
ec2:$sudo apt-get update
ec2:$sudo apt-get install -y git oracle-java7-installer emacs24 emacs24-el

Here you have to click OK and YES to two licence questions (haven't dared to test standardjava yet).

ec2:$sudo useradd -d /home/swarm -m swarm -s /bin/bash
ec2:$sudo passwd swarm

set a practical password here, please.

ec2:$sudo sed  -i .backup 's/PasswordAuthentication no/PasswordAuthentication yes/' /etc/ssh/sshd_config
ec2:$sudo restart ssh

or distribute the swarm key to everyone

Back on Mac:
------------

mac:$ ssh swarm@ec...

and the password will work just fine!
awsum.

now as the swarm-user, get lein by downloading the swarm-repo

swarm$:
mkdir bin
export PATH=$(pwd)/bin:${PATH}
export EDITOR=emacs24
git clone git://github.com/nuclearsandwich/swarming.git
swarming/swarmup.sh

in the emacs scratch buffer, run the following (C-x C-e with cursor after each s-expression below

(require 'package)
(add-to-list 'package-archives
             '("marmalade" . "http://marmalade-repo.org/packages/"))
(package-initialize)

and then run:

M-x package-install [RET] nrepl [RET]

The apple terminal with swedish computer can't make M- work in standard, but there's a convenient terminal preference for that (use alt as Meta key). Then the [] and {} won't work. Use US-keyboard-layout.