This is a web admin interface and simple deploy mechanism for Dynosaur, a pluggable Heroku autoscaler. It is a rails app designed to be run on Heroku with only environment variables for configuration. This rails app runs the dynosaur autoscaler in a background thread, displays status, and allows the user to configure the autoscaler.
Add a heroku remote
heroku create
git remote -v
heroku addons:add heroku-postgresql
heroku addons:add papertrail
Set environment variables
heroku config:set RAKE_ENV=production
heroku config:set RAILS_ENV=production
heroku config:set SECRET_TOKEN=$(rake secret)
heroku config:set DYNOSAUR_IP_WHITELIST=$(curl -s http://ifconfig.me)
Deploy to heroku
git push heroku
heroku run rake db:migrate
heroku ... TODO
Check your logs
heroku logs -t
This app requires only one environment variable (although we suggest you set up some authentication too, see below).
SECRET_TOKEN=<YOUR SECRET>
To generate a secret token, run
rake secret
The default security is HTTP basic auth, with username 'admin' and password 'password'. To set new credentials, set the following environment variables
DYNOSAUR_USERNAME=myuser
DYNOSAUR_PASSWORD=mypass
It would be better to bcrypt the password variable. We have included a script to generate a bcrypted password string:
bundle exec script/gen-password PASSWORD
# Note: use single quotes to avoid issues with '$' in the bcrypt string
DYNOSAUR_PASSWORD='<ENCRYPTED_PASSWORD>'
We also offer an IP address whitelist feature. Set the following environment variable as a comma-separated list of IP addresses:
DYNOSAUR_IP_WHITELIST="10.0.1.2,192.168.1.34"
Once up and running, you can configure your dynosaur instance (see the Dynosaur Docs for explanation of the different parameters.
After configuring the main Dynosaur parameters, you must restart the app before configuring plugins.
Add a plugin (e.g. Google Analytics and set all the params required).
Restart the rails app and you should see that your autoscaler is running. It will show you the results of the individual plugins, which you can compare to e.g. the Google Analytics website.
- You must restart the app after adding plugins (
heroku restart) - You have to remove plugins manually from the database and restart the rails app if you want to delete them.
- Validation of plugin config is not very forgiving and you can lose your progress.
