Cloud Server Provisioning Scripts

ec2-ubuntu-nodejs.sh

This bash script will provision a new EC2 instance with the following:

• Node.js (cloned from the Node.js Github repository)
• NPM
• Forever (installed globally via NPM)
• Git

The provisioner also updates apt-get and updates the /etc/hosts file to resolve the machine's hostname to 127.0.0.1 in order to avoid subsequent errors with hostname lookups.

Usage

You can run this script as soon as new EC2 instances come up:

$ ssh ubuntu@EC2_IP_ADDRESS 'bash -' < ec2-ubuntu-nodejs.sh

Where EC2_IP_ADDRESS is the public IP address of the new EC2 instance.

Node.js Installation

The provisioner installs Node.js into /opt/node. The ubuntu user's $PATH is updated to include this, and the new $PATH is also saved to ~/.bashrc

Port Forwarding

Since we run Node.js apps on port 8888, this script also updates iptables to redirect port 8888 to port 80. The redirect rule is added to /etc/rc.local so it is applied at startup.