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116 lines
3.8 KiB
Ruby
116 lines
3.8 KiB
Ruby
#!/usr/bin/env ruby
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# This example demonstrates creating a snapshot from a Cloud Block Storage volume with the Rackpace Open Cloud
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require 'rubygems' #required for Ruby 1.8.x
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require 'fog'
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def get_user_input(prompt)
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print "\n#{prompt}: "
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gets.chomp
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end
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def select_server(servers)
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abort "\nThere are not any servers in the Chicago region. Try running create_server.rb\n\n" if servers.empty?
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puts "\nSelect Server For Volume Detachment:\n\n"
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servers.each_with_index do |server, i|
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puts "\t #{i}. #{server.name} [#{server.public_ip_address}]"
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end
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delete_str = get_user_input "\nEnter Server Number"
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servers[delete_str.to_i]
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end
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def select_attachment(attachments)
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abort "\nThis server does not contain any volumes in the Chicago region. Try running server_attachments.rb\n\n" if attachments.empty?
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puts "\nSelect Volume To Detach:\n\n"
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attachments.each_with_index do |attachment, i|
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puts "\t #{i}. #{attachment.device}"
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end
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delete_str = get_user_input "\nEnter Volume Number"
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attachments[delete_str.to_i]
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end
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# Use username defined in ~/.fog file, if absent prompt for username.
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# For more details on ~/.fog refer to http://fog.io/about/getting_started.html
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def rackspace_username
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Fog.credentials[:rackspace_username] || get_user_input("Enter Rackspace Username")
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end
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# Use api key defined in ~/.fog file, if absent prompt for api key
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# For more details on ~/.fog refer to http://fog.io/about/getting_started.html
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def rackspace_api_key
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Fog.credentials[:rackspace_api_key] || get_user_input("Enter Rackspace API key")
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end
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#create Next Generation Cloud Server service
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compute_service = Fog::Compute.new({
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:provider => 'rackspace',
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:rackspace_username => rackspace_username,
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:rackspace_api_key => rackspace_api_key,
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:version => :v2, # Use Next Gen Cloud Servers
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:rackspace_region => :ord #Use Chicago Region
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})
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#create Cloud Block Storage service
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cbs_service = Fog::Rackspace::BlockStorage.new({
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:rackspace_username => rackspace_username,
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:rackspace_api_key => rackspace_api_key,
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:rackspace_region => :ord #Use Chicago Region
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})
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# retrieve list of servers
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servers = compute_service.servers
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# prompt user for server
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server = select_server(servers)
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# get attached volumes --also know as attachments
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attachments = server.attachments
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# prompt user for volume to detach
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attachment = select_attachment(attachments)
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# prompt for snapshot name
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snapshot_name = get_user_input "Enter Snapshot Name"
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puts "\n\n"
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puts "******************** NOTE ******************************************"
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puts "* Volume must be unmounted from operating system before detaching. *"
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puts "* This script assumes volume has been unmounted. *"
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puts "********************************************************************\n\n"
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volume = cbs_service.volumes.get attachment.volume_id
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# The snapshot process requires all writes to be flushed to disk. This requires unmounting the file systems or detaching the volume.
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puts "Detaching Volume #{volume.display_name}"
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attachment.detach
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volume.wait_for { ready? }
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puts "Now Creating Snapshot #{snapshot_name}"
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snapshot = cbs_service.snapshots.create :display_name => snapshot_name, :volume_id => attachment.volume_id
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begin
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# Check every 5 seconds to see if snapshot is in the available state (ready?).
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# If the available has not been built in 5 minutes (600 seconds) an exception will be raised.
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snapshot.wait_for(600, 5) do
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print "."
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STDOUT.flush
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ready?
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end
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puts "[DONE]\n\n"
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puts "Re-attaching Volume #{volume.display_name}"
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attachment.save
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rescue Fog::Errors::TimeoutError
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puts "[TIMEOUT]\n\n"
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puts "The snapshot #{snapshot.display_name} is still being preformed and is taking longer to complete than expected."
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puts "You can continute to monitor the process through the web console at https://mycloud.rackspace.com/\n\n"
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end
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