#!/usr/bin/env python -t<\/span>\n# encoding: utf-8<\/span>\n# origin: http://overt.org/2010/02/15/off-site-backup-for-010gb-using-dirvish-and-amazon-ec2-and-ebs/<\/span>\n"""<\/span>\nrun_offsite_backups.py<\/span>\n <\/span>\nWake up the EC2 backup server, run dirvish backup, then shut it down<\/span>\n <\/span>\nCreated by Bryan Klingner (code.b@overt.org) on 2010-02-02.<\/span>\nFeel free to use this code yourself. Maybe email me if you do :)<\/span>\n"""<\/span>\n \nimport<\/span> sys<\/span>\nimport<\/span> os<\/span>\nimport<\/span> boto<\/span>\nimport<\/span> time<\/span>\nimport<\/span> subprocess<\/span>\n \nBACKUP_INSTANCE_ID<\/span> =<\/span> 'YOUR_INSTANCE_ID'<\/span>\n \ndef<\/span> main<\/span>():<\/span>\n \n conn<\/span> =<\/span> boto<\/span>.<\/span>connect_ec2<\/span>()<\/span>\n \n # get the backup instance object<\/span>\n instance<\/span> =<\/span> conn<\/span>.<\/span>get_all_instances<\/span>(<\/span>instance_ids<\/span>=<\/span>(<\/span>BACKUP_INSTANCE_ID<\/span>,))[<\/span>0<\/span>]<\/span>.<\/span>instances<\/span>[<\/span>0<\/span>]<\/span>\n \n # if the instance is stopped, start it up<\/span>\n if<\/span> instance<\/span>.<\/span>state<\/span> !=<\/span> 'running'<\/span>:<\/span>\n conn<\/span>.<\/span>start_instances<\/span>(<\/span>instance_ids<\/span>=<\/span>(<\/span>BACKUP_INSTANCE_ID<\/span>,))<\/span>\n waited<\/span> =<\/span> 0<\/span>\n while<\/span> instance<\/span>.<\/span>state<\/span> !=<\/span> 'running'<\/span>:<\/span>\n instance<\/span>.<\/span>update<\/span>()<\/span>\n sys<\/span>.<\/span>stdout<\/span>.<\/span>write<\/span>(<\/span>"<\/span>\\r<\/span>Instance starting up (<\/span>%d<\/span> sec)..."<\/span> %<\/span> (<\/span>waited<\/span>))<\/span>\n sys<\/span>.<\/span>stdout<\/span>.<\/span>flush<\/span>()<\/span>\n time<\/span>.<\/span>sleep<\/span>(<\/span>1<\/span>)<\/span>\n waited<\/span> +=<\/span> 1<\/span>\n \n print<\/span> "<\/span>\\n<\/span>"<\/span>\n print<\/span> "Backup instance running:"<\/span>\n print<\/span> " ID: "<\/span>,<\/span> instance<\/span>.<\/span>id<\/span>\n print<\/span> " State: "<\/span>,<\/span> instance<\/span>.<\/span>state<\/span>\n print<\/span> " DNS name: "<\/span>,<\/span> instance<\/span>.<\/span>dns_name<\/span>\n \n # chill for a few seconds so the SSH server is listening<\/span>\n time<\/span>.<\/span>sleep<\/span>(<\/span>10<\/span>)<\/span>\n \n print<\/span> ""<\/span>\n print<\/span> "Initiating backup..."<\/span>\n retcode<\/span> =<\/span> ssh_cmd<\/span>(<\/span>'dirvish-expire; dirvish-runall'<\/span>,<\/span> instance<\/span>.<\/span>dns_name<\/span>,<\/span> user<\/span>=<\/span>'username'<\/span>)<\/span>\n print<\/span> ""<\/span>\n \n # backup is done; shut down the instance<\/span>\n conn<\/span>.<\/span>stop_instances<\/span>(<\/span>instance_ids<\/span>=<\/span>(<\/span>BACKUP_INSTANCE_ID<\/span>,))<\/span>\n waited<\/span> =<\/span> 0<\/span>\n while<\/span> instance<\/span>.<\/span>state<\/span> !=<\/span> 'stopped'<\/span>:<\/span>\n instance<\/span>.<\/span>update<\/span>()<\/span>\n sys<\/span>.<\/span>stdout<\/span>.<\/span>write<\/span>(<\/span>"<\/span>\\r<\/span>Instance shutting down (<\/span>%d<\/span> sec)..."<\/span> %<\/span> (<\/span>waited<\/span>))<\/span>\n sys<\/span>.<\/span>stdout<\/span>.<\/span>flush<\/span>()<\/span>\n time<\/span>.<\/span>sleep<\/span>(<\/span>1<\/span>)<\/span>\n waited<\/span> +=<\/span> 1<\/span>\n print<\/span> ""<\/span>\n \ndef<\/span> ssh_cmd<\/span>(<\/span>cmd<\/span>,<\/span> host<\/span>,<\/span> user<\/span>=<\/span>'root'<\/span>):<\/span>\n """ Run a shell command on a remote server via ssh """<\/span>\n \n ssh_cmd<\/span> =<\/span> 'ssh -o ConnectTimeout=5 -o StrictHostKeyChecking=no '<\/span> +<\/span> user<\/span> +<\/span> '@'<\/span> +<\/span> host<\/span> +<\/span> " '<\/span>%s<\/span>'"<\/span> %<\/span> (<\/span>cmd<\/span>)<\/span>\n print<\/span>