diff options
Diffstat (limited to 'debian/byteback/usr/sbin/byteback-backup')
| -rwxr-xr-x | debian/byteback/usr/sbin/byteback-backup | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/debian/byteback/usr/sbin/byteback-backup b/debian/byteback/usr/sbin/byteback-backup deleted file mode 100755 index 22fe0fb..0000000 --- a/debian/byteback/usr/sbin/byteback-backup +++ /dev/null @@ -1,216 +0,0 @@ -#!/usr/bin/ruby -# -# Back up this system to a byteback-enabled server (just some command line -# tools and SSH setup). We aim to make sure this backups are easy, complete -# and safe for most types of hosting customer. -# -# See 'man byteback' for more information. - -require 'getoptlong' -require 'resolv' - - -def error(message) - STDERR.print "*** #{message}\n" - exit 1 -end - -def verbose(message) - print "#{message}\n" -end - -def help - puts <<EOF -#{$0}: Back up this system to a byteback-enabled server - -Options: - --destination, -d <s>: Backup destination (i.e. user@host:/path) - --source, -s <s>: Source paths (defaults: / and /boot) - --exclude, -x <s>: Exclude paths (defaults: /swap.file, /var/backups/localhost, /var/cache) - --verbose, -v: Show rsync command and progress - --retry-number, -r <n>: Number of retries on error (default: 3) - --retry-delay, -e <n>: Wait number of seconds between retries (default: 1800) - --ssh-key, -k <s>: SSH key for connection (default: /etc/byteback/key) - --help, -h: Show this message -EOF - exit 0 -end - - -opts = GetoptLong.new( - [ '--help', '-h', GetoptLong::NO_ARGUMENT ], - [ '--verbose', '-v', GetoptLong::NO_ARGUMENT ], - [ '--source', '-s', GetoptLong::REQUIRED_ARGUMENT ], - [ '--destination', '-d', GetoptLong::REQUIRED_ARGUMENT ], - [ '--retry-number', '-r', GetoptLong::REQUIRED_ARGUMENT ], - [ '--retry-delay', '-e', GetoptLong::REQUIRED_ARGUMENT ], - [ '--ssh-key' ,'-k', GetoptLong::REQUIRED_ARGUMENT ] -) - -@ssh_key = nil -@destination = nil -@retry_number = 3 -@retry_delay = 1800 -@sources = nil -@excludes = nil - -# Read the default destination -if File.exists?("/etc/byteback/destination") - @destination = File.read("/etc/byteback/destination").chomp -end - -# Set the default SSH key -if File.exists?("/etc/byteback/key") - @ssh_key = "/etc/byteback/key" -end - -# Read in the default sources -if File.exists?("/etc/byteback/sources") - @sources = File.readlines("/etc/byteback/sources").map{|m| m.chomp} -end - -# Read in the default excludes -if File.exists?("/etc/byteback/excludes") - @excludes = File.readlines("/etc/byteback/excludes").map{|m| m.chomp} -end - -begin - opts.each do |opt,arg| - case opt - when '--help' - help = true - when '--verbose' - $VERBOSE = true - when "--source" - @sources ||= [] - @sources << arg - when "--exclude" - @excludes ||= [] - @excludes << arg - when "--destination" - @destination = arg - when "--retry-number" - @retry_number = arg.to_i - when "--retry-delay" - @retry_delay = arg.to_i - when "--ssh-key" - @ssh_key = arg - end - end -rescue => err - # any errors, show the help - warn err.to_s - help = true -end - - -# -# Check our destination -# -if @destination =~ /^(?:(.+)@)?([^@:]+):(.+)?$/ - @destination_user, @destination_host, @destination_path = [$1, $2, $3] -else - error("Destination must be a remote path, e.g. ssh@host.com:/store/backups") -end - -# -# Validate & normalise source directories -# -@sources = ["/"] if @sources.nil? - -error("No sources specified") if @sources.empty? - -@sources = @sources.map do |s| - s = s.gsub(/\/+/,"/") - error("Can't read directory #{s}") unless File.readable?(s) - s -end - -# -# Validate and normalise excludes -# -if @excludes.nil? - @excludes = ["/swap.file", "/var/backups/localhost"] - @excludes << "/var/cache/apt/archives" if File.directory?("/var/cache/apt/archives") -end - -@excludes = @excludes.map do |e| - e.gsub(/\/+/,"/") -end - -error("Must suply --destination or put it into /etc/bytebackup/destination") unless @destination - -# -# Test ssh connection is good before we start -# -error("Could not read ssh key #{@ssh_key}") unless File.readable?(@ssh_key) - -def ssh(*ssh_args) - args = ["ssh", - "-o", "BatchMode=yes", - "-x", "-a", - "-i", @ssh_key, - "-l", @destination_user, - @destination_host - ] + - ssh_args. - map { |a| a ? a : "" } - - print args.map { |a| / /.match(a) ? "\"#{a}\"" : a }.join(" ")+"\n" if $VERBOSE - - system(*args) -end - -error("Could not connect to #{@destination}") unless - ssh("byteback-receive", "--ping", ($VERBOSE ? "--verbose" : "" )) - -# -# Call rsync to copy certain sources, returns exit status (see man rsync) -# -def rsync(*sources) - # Default options include --inplace because we only care about consistency - # at the end of the job, and rsync will do more work for big files without - # it. - # - args = %w(rsync --archive --numeric-ids --delete --inplace --delete --one-file-system --relative) - args += [ "--rsync-path", "rsync --fake-super"] - args += [ "--rsh", "ssh -o BatchMode=yes -x -a -i #{@ssh_key} -l #{@destination_user}"] - args << "--verbose" if $VERBOSE - args += @excludes.map { |x| ["--exclude", x] }.flatten - args += sources - args << @destination - - print args.map { |a| / /.match(a) ? "\"#{a}\"" : a }.join(" ")+"\n" if $VERBOSE - - system(*args) - - return $?.exitstatus -end - -RSYNC_EXIT_STATUSES_TO_RETRY_ON = [10,11,20,21,22,23,24,30] - -# Run the file copy, retrying if necessary -# -loop do - status = rsync(*@sources) - - if status === 0 - break - elsif RSYNC_EXIT_STATUSES_TO_RETRY_ON.include?(status) - if @retry_number > 0 - @retry_number -= 1 - sleep @retry_delay - redo - else - error("Maximum number of rsync retries reached") - end - else - error("Fatal rsync error occurred (#{status})") - end -end - -# Mark the backup as done on the other end -# -error("Backup could not be marked complete") unless - ssh("sudo", "byteback-snapshot", "--snapshot", ($VERBOSE ? "--verbose" : "")) - |