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|
#!/usr/bin/ruby
#
# Run on a client machine to set up backups for the first time
#
$LOAD_PATH.unshift('/usr/lib/byteback')
require 'fileutils'
require 'trollop'
require 'byteback/util'
require 'byteback/log'
include Byteback::Util
include Byteback::Log
def error(message)
STDERR.print "*** #{message}\n"
exit 1
end
def verbose(message)
print "#{message}\n"
end
opts = Trollop.options do
opt :hostname, 'Set host name for backups',
type: :string
opt :destination, 'Backup destination (i.e. user@host:/path)',
type: :string
end
@destination = opts[:destination]
@hostname = opts[:hostname]
_dummy, @destination_user, @destination_host, colon, @destination_path =
/^(.*)?(?:@)([^:]+)(:)(.*)?$/.match(@destination).to_a
@destination_user ||= 'byteback'
@destination_path ||= ''
@destination_host ||= @destination
unless @hostname
@hostname = `hostname -f`.chomp
warn "No hostname set, using #{@hostname}\n"
end
FileUtils.mkdir_p('/etc/byteback')
if File.readable?('/etc/byteback/key')
warn "Skipping key generation, delete /etc/byteback/key if that's wrong"
else
error "Couldn't generate SSH key" unless
system <<-KEYGEN
ssh-keygen -q -t rsa -C "byteback client key" \
-N "" -f /etc/byteback/key
KEYGEN
end
key_pub = File.read('/etc/byteback/key.pub').chomp
error "Remote setup didn't work" unless
system("ssh -i /etc/byteback/key -l #{@destination_user} #{@destination_host} byteback-setup-client-receive #{@hostname} #{key_pub}")
File.open('/etc/byteback/destination', 'w') do |f|
f.print "#{@destination_user}@#{@destination_host}:#{@destination_path}"
end
print "Setup worked! To take your first backup run: byteback-backup --verbose\n"
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