This gem aims to provide a relatively simple library to increase your number of servers in a rackspace cloud and, optionally, attach those servers to a load balancer. This gem is pretty low level in relation to the API, and doesn't abstract away much.
Detailed information about the API can be found here:
http://docs.rackspace.com/servers/api/v2/cs-devguide/content/ch_api_operations.html
http://docs.rackspace.com/loadbalancers/api/v1.0/clb-devguide/content/API_Operations-d1e1354.html
There are also official rackspace gems that provide the same functionality available here:
https://github.com/rackspace/ruby-cloudlb
https://github.com/rackspace/ruby-cloudservers
I didn't know these gems existed when I started work on this project :(
Add this line to your application's Gemfile:
gem 'rackspace-scaling'
And then execute:
$ bundle
Or install it yourself as:
$ gem install rackspace-scaling
The very first thing you need to do is get an authentication token.
auth = Rackspace::Scaling::Authentication.new('account_name', 'api_key')
You can then perform operations for servers or load balancers.
lb = Rackspace::Scaling::LoadBalancerOperation.new(auth, 'DFW')
#list all load balancers
puts lb.list
#list all nodes attached to a load balancer
puts lb.nodes(12345)
#Add a node to a load balancer, defaults to port 80, can be overriden with the :port option
puts lb.add_node(:load_balancer_id => 12345, :node_ip => 'internal or external ip')
#remove a node
puts lb.remove_node(:load_balancer_id => 12345, :node_id => 67890)
srv = Rackspace::Scaling::ServerOperation.new(auth, 'DFW')
# lists all the available images you can create servers with
srv.list_images
#list flavours (sizes) of machines you can spin up
srv.list_flavors
#get the status for a specific instance
srv.status('server guid')
#create a new server, required parameters are :image_id, :flavor_id, and :name
puts = srv.create(:flavor_id => '2', :image_id => 'guid', :name => 'fooserver')
#destroy a server
puts srv.destroy('server-guid')
You can either increase or decrease the number of servers you have running.
rackspace_scale_up --api-key myapikey --login mylogin -l 12345 -i server-image-name -n 2
rackspace_scale_down --api-key myapikey --login mylogin -l 12345 -n 2
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Added some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request