elastic-nginx is an AWS SNS hook for registering and unregistering instances that goes up or down by AWS Auto Scaling.
Download (or build) the elastic-nginx binary and upload it to your server. You can just run the binary, but I recommend you to set up Upstart (or other service manager) to run it at boot time. Below is a simple Upstart example:
# Upstart script for Elastic NGINX
start on runlevel [2345]
stop on starting rc RUNLEVEL=[016]
respawn
respawn limit 10 5
console log
env AWS_ACCESS_KEY_ID="A_AWS_ACCESS_KEY_ID"
env AWS_SECRET_ACCESS_KEY="A_AWS_SECRET_ACCESS_KEY"
exec /usr/local/bin/elastic-nginx -aws-region="us-east-1" -config "/etc/elastic-nginx.json"
A sample configuration file can be found at etc/elastic-nginx.example.json.
More configuration options can be listed with the -h or --help flags.
Notes:
- You'll need AWS credentials with EC2 reading permissions.
- You'll need to subscribe to the SNS Topic after registering the HTTP hook. You can do this automatically by turning auto-subscribe feature on. (see config file)
To run the test suite you'll need a couple more dependencies:
go get github.com/tsuru/commandmocker
go get gopkg.in/check.v1
Run go test ./... and see everything passing. 😄