Snapshot and manage AWS EBS volumes

ebs_snapshot.rb

require 'fog'

puts "Starting.."
today = Time.now.strftime("%Y%m%d")
puts "Today is #{today}"

@fog = Fog::Compute.new(:provider => 'AWS', :aws_access_key_id => 'YOUR_ACCESS_KEY', :aws_secret_access_key => 'YOUR_SEKRET_ACCESS_KEY')

volumes  = @fog.volumes.all
volumes.each do |vol|
  puts "---------------------------------"
  puts "volume not attached to running instance.. skipping this volume" if vol.server_id.nil?
  next if vol.server_id.nil?

  puts "Creating snapshot for volume #{vol.id}"
  snapshot = @fog.snapshots.new
  snapshot.description = "Daily Snapshot - created: #{Time.now.strftime(" %m/%d/%Y")} "
  snapshot.volume_id = vol.id

  puts "Saving snapshot for volume #{vol.id}"
  snapshot.save

  puts "Reloading snapshot to get ID"
  snapshot.reload
  puts "Snapshot ID = #{snapshot.id}"

  puts "Tagging snapshot #{snapshot.id} for volume #{vol.id}"
  @fog.tags.create(:resource_id => snapshot.id, :key => "SnapshotDate", :value => today)
  @fog.tags.create(:resource_id => snapshot.id, :key => "SnapshotType", :value => 'daily')
end

puts "Fetching tags for daily snapshots"
tags = @fog.tags.all(:key => "SnapshotType", :value => "daily")
days_to_keep = 8

tags.each do |tag|
  snapshot = @fog.snapshots.get(tag.resource_id)
  puts "Checking snapshot: #{snapshot.id}"
  snapshot_age = today.to_i - snapshot.created_at.strftime("%Y%m%d").to_i

  if snapshot_age > days_to_keep
    puts "snapshot #{snapshot.id} is older then #{days_to_keep} days, deleting"
    @fog.delete_snapshot(snapshot.id)
    puts "Complete."
  end

end