Ops Tools

This repo contains rake tasks to automate some of our DevOps needs. It makes use of [Fog] fog github and Chef chef to create and configureservers in the cloud.

Openstack compatability is broken at this time.

create up ec2 web servers

• installs chef clients on the web servers
• installs and configures rbenv, nginx, git, etc
• delpoys a sinatra web app
• launches and configures load balancer
• configures dns for the app

creates ec2 xmpp servers

• installs chef clients on the xmpp servers
• installs and configures git, java, tigase

Clone the repo and install gems

cd ~ 
git clone [email protected]:splap/fogdemo.git
cd fogdemo 
bundle install

Set up Chef

Create a free hosted chef account at [OpsCode] chef signup and save your private key as fogdemo.pem and set permissions

chmod og-r ~/.ssh/fogdemo/fogdemo.pem

Install knife and create a Chef Client for our new hosted chef account.

cd ~/fogdemo/chef
sudo gem install chef --no-ri --no-rdoc

knife client create fogclient -a -f "~/ssh/fogdemo/validator.pem"

# see the new client
knife client list

Fetch cookbook declarations from OpsCode

cd ~/fogdemo/chef
librarian-chef install --clean --verbose

Upload roles and cookbooks to hosted chef server

rake push_chef_updates

Spin up a webserver

Fog creates a server, and bootstraps chef. chef installs rbenv, git, nginx, logrotate, etc. It then pulls a sinatra app, installs required gems, and starts up puma.

rake create_web

Configure DNS and load balancing

Connect to or create a load balancer and tell it which web instance to use

rake lb

Configure DNS. Points an alias A record at the load balancer

rake dns

Update all webservers. This will apply chef configuration changes and update the sinatra app. This would not work in a zero downtime deploy strategy without more effort.

rake update_web

Care and feeding

Get an overview of the app's cloud deployment (default rake task)

rake

Stop and destroy a web server

rake destroy_server['server_id']

Stop and abandon all existing servers

rake destroy_all

XMPP

Upload xmpp role on the hosted chef server

knife role from file roles/xmppserver.rb

Create a new xmpp server - installs chef client and runs xmpp role, installing java, tigase, derby db, etc.

rake create_xmpp

Update all xmpp servers

rake update_xmpp