manifests/client.pp - puppet-backuppc - Git at Google

 # == Class: backuppc::client
 #
 # Configures a host for backup with the backuppc server.
 # Uses storedconfigs to provide the backuppc server with
 # required information.
 #
 # === Parameters
 #
 # For parameters that are not documented here see the server
 # manifest.
 #
 # [*ensure*]
 # Present or absent.
 #
 # [*client_name_alias*]
 # Override the client's host name. This allows multiple clients to all refer to the same physical host. This should only be set in the per-PC config file and is only used by BackupPC at the last moment prior to generating the command used to backup that machine (ie: the value of $Conf{ClientNameAlias} is invisible everywhere else in BackupPC). The setting can be a host name or IP address, eg:
 #         $Conf{ClientNameAlias} = 'realHostName';
 #         $Conf{ClientNameAlias} = '192.1.1.15';
 # will cause the relevant smb/tar/rsync backup/restore commands to be directed to realHostName, not the client name.
 # Note: this setting doesn't work for hosts with DHCP set to 1.
 #
 # [*system_account*]
 # Name of the user that will be created to allow backuppc
 # access to the system via ssh. This only applies to xfer
 # methods that require it. To override this set the system_account
 # to an empty string and configure access to the client yourself as
 # the default in the global config file (root) or change the
 # rsync_client_cmd or tar_client_cmd to suit your setup.
 #
 # [*system_home_directory*]
 # Absolute path to the home directory of the system account.
 #
 # [*system_additional_commands*]
 # Additional sudo commands to whitelist for the system_account. This
 # is useful if you need to execute any pre dump *scripts* on client before
 # backup. Please prefer system_additional_commands_noexec if you want
 # to whitelist a single command/binary since commands specified here
 # are going to be allowed without the NOEXEC options. See man sudoers
 # for details.
 #
 # [*system_additional_commands_noexec*]
 # Additional sudo commands to whitelist for the system_account. This
 # is useful if you need to execute any pre dump commands on client before
 # backup.
 #
 # [*manage_sudo*]
 # Boolean. Set to true to configure and install sudo and the
 # sudoers.d directory. Defaults to false and is only applied
 # if 1) xfer_method requires ssh access and 2) you're using
 # the system_account parameter.
 #
 # [*manage_rsync*]
 # Boolean. By default will install the rsync package. If you
 # manage this elsewhere set it to false. Defaults to true and
 # is only applied if 1) the xfer_method is rsync and 2) you're
 # using the system_account parameter.
 #
 # [*blackout_bad_ping_limit*]
 # To allow for periodic rebooting of a PC or other brief periods when a
 # PC is not on the network, a number of consecutive bad pings is allowed
 # before the good ping count is reset.
 #
 # [*blackout_periods*]
 #  One or more blackout periods can be specified. If a client is subject to blackout then no regular (non-manual) backups will be started during any of these periods. hourBegin and hourEnd specify hours fro midnight and weekDays is a list of days of the week where 0 is Sunday, 1 is Monday etc.
 #  For example:
 #     $Conf{BlackoutPeriods} = [
 #          {
 #              hourBegin =>  7.0,
 #              hourEnd   => 19.5,
 #              weekDays  => [1, 2, 3, 4, 5],
 #          },
 #     ];
 #  specifies one blackout period from 7:00am to 7:30pm local time on Mon-Fri.
 #
 # [*ping_max_msec*]
 # Maximum latency between backuppc server and client to schedule
 # a backup. Default to 20ms.
 #
 # [*ping_cmd*]
 # Ping command. The following variables are substituted at run-time:
 #      $pingPath      path to ping ($Conf{PingPath})
 #      $host          host name
 #    Wade Brown reports that on solaris 2.6 and 2.7 ping -s returns the wrong exit status (0 even on failure). Replace with "ping $host 1", which gets the correct exit status but we don't get the round-trip time.
 #    Note: all Cmds are executed directly without a shell, so the prog name needs to be a full path and you can't include shell syntax like redirection and pipes; put that in a script if you need it.
 #
 # [*backups_disable*]
 # Disable all full and incremental backups. These settings are useful for a client that
 # is no longer being backed up (eg: a retired machine), but you wish to keep the last backups
 # available for browsing or restoring to other machines.
 #
 # [*xfer_method*]
 # What transport method to use to backup each host. Valid values are rsync,
 # rsyncd, tar and smb.
 #
 # [*xfer_loglevel*]
 # Level of verbosity in Xfer log files. 0 means be quiet, 1 will give will
 # give one line per file, 2 will also show skipped files on incrementals,
 # higher values give more output.
 #
 # [*smb_share_name*]
 # Name of the host share that is backed up when using SMB. This can be a string or an
 # array of strings if there are multiple shares per host.
 #
 # [*smb_share_username*]
 # Smbclient share user name. This is passed to smbclient's -U argument.
 #
 # [*smb_share_passwd*]
 # Smbclient share password. This is passed to smbclient via its PASSWD environment variable.
 #
 # [*smb_client_full_cmd*]
 # Command to run smbclient for a full dump.
 #
 # [*smb_client_incr_cmd*]
 # Command to run smbclient for an incremental dump.
 #
 # [*smb_client_restore_cmd*]
 # Command to run smbclient for a restore.
 #
 # [*tar_share_name*]
 # Which host directories to backup when using tar transport. This can be a string or an array
 # of strings if there are multiple directories to backup per host.
 #
 # [*tar_client_cmd*]
 # Command to run tar on the client. GNU tar is required. The default will run
 # the tar command as the user you specify in system_account.
 #
 # [*tar_full_args*]
 # Extra tar arguments for full backups.
 #
 # [*tar_incr_args*]
 # Extra tar arguments for incr backups.
 #
 # [*tar_client_restore_cmd*]
 # Full command to run tar for restore on the client. GNU tar is required.
 #
 # [*rsync_client_cmd*]
 # Full command to run rsync on the client machine. The default will run
 # the rsync command as the user you specify in system_account.
 #
 # [*rsync_client_restore_cmd*]
 # Full command to run rsync for restore on the client.
 #
 # [*rsync_share_name*]
 # Share name to backup. For $Conf{XferMethod} = "rsync" this should be a
 # file system path, eg '/' or '/home'.
 #
 # [*rsyncd_client_port*]
 # Rsync daemon port on host.
 #
 # [*rsyncd_user_name*]
 # Rsync daemon user name on host.
 #
 # [*rsyncd_passwd*]
 # Rsync daemon password on host.
 #
 # [*rsyncd_auth_required*]
 # Whether authentication is mandatory when connecting to the client's rsyncd. By default
 # this is on, ensuring that BackupPC will refuse to connect to an rsyncd on the client that
 # is not password protected.
 #
 # [*rsync_csum_cache_verify_prob*]
 # When rsync checksum caching is enabled (by adding the --checksum-seed=32761 option to
 # rsync_args), the cached checksums can be occasionally verified to make sure the file
 # contents matches the cached checksums.
 #
 # [*rsync_args*]
 # Arguments to rsync for backup.
 #
 # [*rsync_restore_args*]
 # Arguments to rsync for restore.
 #
 # [*backup_files_only*]
 # List of directories or files to backup. If this is defined, only these
 # directories or files will be backed up.
 #
 # [*backup_files_exclude*]
 # List of directories or files to exclude from the backup. For xfer_method smb,
 # only one of backup_files_exclude and backup_files_only can be specified per share.
 # If both are set for a particular share, then backup_files_only takes precedence and
 # backup_files_exclude is ignored.
 #
 # [*dump_pre_user_cmd*]
 # Optional command to run before a dump.
 #
 # [*dump_post_user_cmd*]
 # Optional command to run after a dump.
 #
 # [*dump_pre_share_cmd*]
 # Optional command to run before a dump of a share.
 #
 # [*dump_post_share_cmd*]
 # Optional command to run after a dump of a share.
 #
 # [*restore_pre_user_cmd*]
 # Optional command to run before a restore.
 #
 # [*restore_post_user_cmd*]
 # Optional command to run after a restore.
 #
 # [*user_cmd_check_status*]
 # Whether the exit status of each PreUserCmd and PostUserCmd is checked.
 #
 # [*hosts_file_dhcp*]
 # The way hosts are discovered has changed and now in most cases you should
 # use the default of 0 for the DHCP flag, even if the host has a dynamically
 # assigned IP address.
 #
 # [*hosts_file_most_users*]
 # Additional user names, separate by commas and with no white space, can be
 # specified. These users will also have full permission in the CGI interface
 # to stop/start/browse/restore backups for this host. These users will not be
 # sent email about this host.
 #
 # === Examples
 #
 #  See tests folder.
 #
 # === Authors
 #
 # Scott Barr <gsbarr@gmail.com>
 #
 class backuppc::client (
   $ensure                = 'present',
   $backuppc_hostname     = '',
   $client_name_alias     = false,
   $system_account        = 'backup',
   $system_home_directory = '/var/backups',
   $system_additional_commands = [],
   $system_additional_commands_noexec = [],
   $manage_sudo           = false,
   $manage_rsync          = true,
   $full_period           = false,
   $full_keep_cnt         = false,
   $full_age_max          = false,
   $incr_period           = false,
   $incr_keep_cnt         = false,
   $incr_age_max          = false,
   $incr_levels           = [],
   $incr_fill             = false,
   $partial_age_max       = false,
   $blackout_bad_ping_limit = false,
   $ping_max_msec         = false,
   $ping_cmd              = false,
   $blackout_good_cnt     = false,
   $blackout_periods      = false,
   $backups_disable       = false,
   $xfer_method           = 'rsync',
   $xfer_loglevel         = '1',
   $smb_share_name        = '',
   $smb_share_username    = '',
   $smb_share_passwd      = '',
   $smb_client_full_cmd   = '',
   $smb_client_incr_cmd   = '',
   $smb_client_restore_cmd = '',
   $tar_share_name        = '',
   $tar_client_cmd        = '',
   $tar_full_args         = '',
   $tar_incr_args         = '',
   $tar_client_restore_cmd = '',
   $rsync_client_cmd      = '',
   $rsync_client_restore_cmd = '',
   $rsync_share_name      = '',
   $rsyncd_client_port    = false,
   $rsyncd_user_name      = '',
   $rsyncd_passwd         = '',
   $rsyncd_auth_required  = false,
   $rsync_csum_cache_verify_prob = false,
   $rsync_args            = [],
   $rsync_restore_args    = [],
   $backup_files_only     = [],
   $backup_files_exclude  = [],
   $dump_pre_user_cmd     = '',
   $dump_post_user_cmd    = '',
   $dump_pre_share_cmd    = '',
   $dump_post_share_cmd   = '',
   $restore_pre_user_cmd  = '',
   $restore_post_user_cmd = '',
   $user_cmd_check_status = true,
   $email_notify_min_days = false,
   $email_from_user_name  = '',
   $email_admin_user_name = '',
   $email_notify_old_backup_days = false,
   $hosts_file_dhcp       = 0,
   $hosts_file_more_users = '',
     ) {
   include backuppc::params

   validate_re($ensure, '^(present|absent)$',
   'ensure parameter must have a value of: present or absent')

   $directory_ensure = $ensure ? {
     'present' => 'directory',
     default   => absent,
   }

   if empty($backuppc_hostname) {
     fail('Please provide the hostname of the node that hosts backuppc.')
   }

   validate_re($xfer_method, '^(smb|rsync|rsyncd|tar)$',
   'Xfer_method parameter must have value of: smb, rsync, rsyncd or tar')
   if $blackout_periods != false {
       validate_array($blackout_periods)
   }
   validate_re($xfer_loglevel, '^[0-2]$',
   'Xfer_loglevel parameter must be a 0, 1 or 2')

   $real_incr_fill = bool2num($incr_fill)
   $real_backups_disable = bool2num($backups_disable)
   $real_rsyncd_auth_required = bool2num($rsyncd_auth_required)
   $real_user_cmd_check_status = bool2num($user_cmd_check_status)

   # With these xfer_methods we require sudo to grant access
   # from the backuppc server to this client. It may be managed
   # elsewhere so we allow it to be overridden with the manage_sudo
   # parameter.
   if $xfer_method in ['rsync', 'tar'] and ! empty($system_account)
   {
     validate_absolute_path($system_home_directory)

     if $xfer_method == 'rsync' {
       if $manage_rsync {
         package { 'rsync':
           ensure => installed,
         }
       }
       $sudo_command_noexec = '/usr/bin/rsync'
     }
     else {
       $sudo_command_noexec = $backuppc::params::tar_path
     }

     if $manage_sudo {
       package { 'sudo':
         ensure => installed,
         before => File['/etc/sudoers.d/backuppc'],
       }
       file { '/etc/sudoers.d/':
         ensure  => directory,
         purge   => false,
         require => Package['sudo'],
       }
       file_line { 'sudo_includedir':
         ensure  => present,
         path    => '/etc/sudoers',
         line    => '#includedir /etc/sudoers.d',
         require => Package['sudo'],
       }
     }

     if ! empty($system_additional_commands) {
       $additional_sudo_commands = join($system_additional_commands, ', ')
       $sudo_commands = $additional_sudo_commands
     }

     if ! empty($system_additional_commands_noexec) {
       $additional_sudo_commands_noexec = join($system_additional_commands_noexec, ', ')
       $sudo_commands_noexec = "${sudo_command_noexec}, ${additional_sudo_commands_noexec}"
     } else {
       $sudo_commands_noexec = $sudo_command_noexec
     }

     if ! empty($sudo_commands) {
       file { '/etc/sudoers.d/backuppc':
         ensure  => $ensure,
         owner   => 'root',
         group   => 'root',
         mode    => '0440',
         content => "${system_account} ALL=(ALL:ALL) NOPASSWD: ${sudo_commands}\n",
       }
     } else {
       file { '/etc/sudoers.d/backuppc':
         ensure  => 'absent',
       }
     }

     file { '/etc/sudoers.d/backuppc_noexec':
       ensure  => $ensure,
       owner   => 'root',
       group   => 'root',
       mode    => '0440',
       content => "${system_account} ALL=(ALL:ALL) NOEXEC:NOPASSWD: ${sudo_commands_noexec}\n",
     }

     user { $system_account:
       ensure     => $ensure,
       home       => $system_home_directory,
       managehome => true,
       shell      => '/bin/bash',
       comment    => 'BackupPC',
       system     => true,
       password   => sha1("tyF761_${::fqdn}${::uniqueid}"),
     }

     file { "${system_home_directory}/.ssh":
       ensure => $directory_ensure,
       mode   => '0700',
       owner  => $system_account,
       group  => $system_account,
     }

     file { "${system_home_directory}/backuppc.sh":
       ensure  => $ensure,
       owner   => 'root',
       group   => 'root',
       mode    => '0755',
       content => template('backuppc/client/backuppc.sh.erb'),
       require => User[$system_account],
     }

     Ssh_authorized_key <<| tag == "backuppc_${backuppc_hostname}" |>> {
       user    => $system_account,
       require => File["${system_home_directory}/.ssh"]
     }
   }

   if $::fqdn != $backuppc_hostname {
     @@sshkey { $::fqdn:
       ensure => $ensure,
       type   => 'ssh-rsa',
       key    => $::sshrsakey,
       tag    => "backuppc_sshkeys_${backuppc_hostname}",
     }
   }

   @@file_line { "backuppc_host_${::fqdn}":
     ensure => $ensure,
     path   => $backuppc::params::hosts,
     match  => "^${::fqdn}.*$",
     line   => "${::fqdn} ${hosts_file_dhcp} backuppc ${hosts_file_more_users}\t#puppetmanaged\n",
     tag    => "backuppc_hosts_${backuppc_hostname}",
   }

   @@file { "${backuppc::params::config_directory}/pc/${::fqdn}.pl":
     ensure  => $ensure,
     content => template("${module_name}/host.pl.erb"),
     owner   => 'backuppc',
     group   => $backuppc::params::group_apache,
     mode    => '0640',
     tag     => "backuppc_config_${backuppc_hostname}"
   }
 }
	# == Class: backuppc::client
	#
	# Configures a host for backup with the backuppc server.
	# Uses storedconfigs to provide the backuppc server with
	# required information.
	#
	# === Parameters
	#
	# For parameters that are not documented here see the server
	# manifest.
	#
	# [ensure]
	# Present or absent.
	#
	# [client_name_alias]
	# Override the client's host name. This allows multiple clients to all refer to the same physical host. This should only be set in the per-PC config file and is only used by BackupPC at the last moment prior to generating the command used to backup that machine (ie: the value of $Conf{ClientNameAlias} is invisible everywhere else in BackupPC). The setting can be a host name or IP address, eg:
	# $Conf{ClientNameAlias} = 'realHostName';
	# $Conf{ClientNameAlias} = '192.1.1.15';
	# will cause the relevant smb/tar/rsync backup/restore commands to be directed to realHostName, not the client name.
	# Note: this setting doesn't work for hosts with DHCP set to 1.
	#
	# [system_account]
	# Name of the user that will be created to allow backuppc
	# access to the system via ssh. This only applies to xfer
	# methods that require it. To override this set the system_account
	# to an empty string and configure access to the client yourself as
	# the default in the global config file (root) or change the
	# rsync_client_cmd or tar_client_cmd to suit your setup.
	#
	# [system_home_directory]
	# Absolute path to the home directory of the system account.
	#
	# [system_additional_commands]
	# Additional sudo commands to whitelist for the system_account. This
	# is useful if you need to execute any pre dump scripts on client before
	# backup. Please prefer system_additional_commands_noexec if you want
	# to whitelist a single command/binary since commands specified here
	# are going to be allowed without the NOEXEC options. See man sudoers
	# for details.
	#
	# [system_additional_commands_noexec]
	# Additional sudo commands to whitelist for the system_account. This
	# is useful if you need to execute any pre dump commands on client before
	# backup.
	#
	# [manage_sudo]
	# Boolean. Set to true to configure and install sudo and the
	# sudoers.d directory. Defaults to false and is only applied
	# if 1) xfer_method requires ssh access and 2) you're using
	# the system_account parameter.
	#
	# [manage_rsync]
	# Boolean. By default will install the rsync package. If you
	# manage this elsewhere set it to false. Defaults to true and
	# is only applied if 1) the xfer_method is rsync and 2) you're
	# using the system_account parameter.
	#
	# [blackout_bad_ping_limit]
	# To allow for periodic rebooting of a PC or other brief periods when a
	# PC is not on the network, a number of consecutive bad pings is allowed
	# before the good ping count is reset.
	#
	# [blackout_periods]
	# One or more blackout periods can be specified. If a client is subject to blackout then no regular (non-manual) backups will be started during any of these periods. hourBegin and hourEnd specify hours fro midnight and weekDays is a list of days of the week where 0 is Sunday, 1 is Monday etc.
	# For example:
	# $Conf{BlackoutPeriods} = [
	# {
	# hourBegin => 7.0,
	# hourEnd => 19.5,
	# weekDays => [1, 2, 3, 4, 5],
	# },
	# ];
	# specifies one blackout period from 7:00am to 7:30pm local time on Mon-Fri.
	#
	# [ping_max_msec]
	# Maximum latency between backuppc server and client to schedule
	# a backup. Default to 20ms.
	#
	# [ping_cmd]
	# Ping command. The following variables are substituted at run-time:
	# $pingPath path to ping ($Conf{PingPath})
	# $host host name
	# Wade Brown reports that on solaris 2.6 and 2.7 ping -s returns the wrong exit status (0 even on failure). Replace with "ping $host 1", which gets the correct exit status but we don't get the round-trip time.
	# Note: all Cmds are executed directly without a shell, so the prog name needs to be a full path and you can't include shell syntax like redirection and pipes; put that in a script if you need it.
	#
	# [backups_disable]
	# Disable all full and incremental backups. These settings are useful for a client that
	# is no longer being backed up (eg: a retired machine), but you wish to keep the last backups
	# available for browsing or restoring to other machines.
	#
	# [xfer_method]
	# What transport method to use to backup each host. Valid values are rsync,
	# rsyncd, tar and smb.
	#
	# [xfer_loglevel]
	# Level of verbosity in Xfer log files. 0 means be quiet, 1 will give will
	# give one line per file, 2 will also show skipped files on incrementals,
	# higher values give more output.
	#
	# [smb_share_name]
	# Name of the host share that is backed up when using SMB. This can be a string or an
	# array of strings if there are multiple shares per host.
	#
	# [smb_share_username]
	# Smbclient share user name. This is passed to smbclient's -U argument.
	#
	# [smb_share_passwd]
	# Smbclient share password. This is passed to smbclient via its PASSWD environment variable.
	#
	# [smb_client_full_cmd]
	# Command to run smbclient for a full dump.
	#
	# [smb_client_incr_cmd]
	# Command to run smbclient for an incremental dump.
	#
	# [smb_client_restore_cmd]
	# Command to run smbclient for a restore.
	#
	# [tar_share_name]
	# Which host directories to backup when using tar transport. This can be a string or an array
	# of strings if there are multiple directories to backup per host.
	#
	# [tar_client_cmd]
	# Command to run tar on the client. GNU tar is required. The default will run
	# the tar command as the user you specify in system_account.
	#
	# [tar_full_args]
	# Extra tar arguments for full backups.
	#
	# [tar_incr_args]
	# Extra tar arguments for incr backups.
	#
	# [tar_client_restore_cmd]
	# Full command to run tar for restore on the client. GNU tar is required.
	#
	# [rsync_client_cmd]
	# Full command to run rsync on the client machine. The default will run
	# the rsync command as the user you specify in system_account.
	#
	# [rsync_client_restore_cmd]
	# Full command to run rsync for restore on the client.
	#
	# [rsync_share_name]
	# Share name to backup. For $Conf{XferMethod} = "rsync" this should be a
	# file system path, eg '/' or '/home'.
	#
	# [rsyncd_client_port]
	# Rsync daemon port on host.
	#
	# [rsyncd_user_name]
	# Rsync daemon user name on host.
	#
	# [rsyncd_passwd]
	# Rsync daemon password on host.
	#
	# [rsyncd_auth_required]
	# Whether authentication is mandatory when connecting to the client's rsyncd. By default
	# this is on, ensuring that BackupPC will refuse to connect to an rsyncd on the client that
	# is not password protected.
	#
	# [rsync_csum_cache_verify_prob]
	# When rsync checksum caching is enabled (by adding the --checksum-seed=32761 option to
	# rsync_args), the cached checksums can be occasionally verified to make sure the file
	# contents matches the cached checksums.
	#
	# [rsync_args]
	# Arguments to rsync for backup.
	#
	# [rsync_restore_args]
	# Arguments to rsync for restore.
	#
	# [backup_files_only]
	# List of directories or files to backup. If this is defined, only these
	# directories or files will be backed up.
	#
	# [backup_files_exclude]
	# List of directories or files to exclude from the backup. For xfer_method smb,
	# only one of backup_files_exclude and backup_files_only can be specified per share.
	# If both are set for a particular share, then backup_files_only takes precedence and
	# backup_files_exclude is ignored.
	#
	# [dump_pre_user_cmd]
	# Optional command to run before a dump.
	#
	# [dump_post_user_cmd]
	# Optional command to run after a dump.
	#
	# [dump_pre_share_cmd]
	# Optional command to run before a dump of a share.
	#
	# [dump_post_share_cmd]
	# Optional command to run after a dump of a share.
	#
	# [restore_pre_user_cmd]
	# Optional command to run before a restore.
	#
	# [restore_post_user_cmd]
	# Optional command to run after a restore.
	#
	# [user_cmd_check_status]
	# Whether the exit status of each PreUserCmd and PostUserCmd is checked.
	#
	# [hosts_file_dhcp]
	# The way hosts are discovered has changed and now in most cases you should
	# use the default of 0 for the DHCP flag, even if the host has a dynamically
	# assigned IP address.
	#
	# [hosts_file_most_users]
	# Additional user names, separate by commas and with no white space, can be
	# specified. These users will also have full permission in the CGI interface
	# to stop/start/browse/restore backups for this host. These users will not be
	# sent email about this host.
	#
	# === Examples
	#
	# See tests folder.
	#
	# === Authors
	#
	# Scott Barr <gsbarr@gmail.com>
	#
	class backuppc::client (
	$ensure = 'present',
	$backuppc_hostname = '',
	$client_name_alias = false,
	$system_account = 'backup',
	$system_home_directory = '/var/backups',
	$system_additional_commands = [],
	$system_additional_commands_noexec = [],
	$manage_sudo = false,
	$manage_rsync = true,
	$full_period = false,
	$full_keep_cnt = false,
	$full_age_max = false,
	$incr_period = false,
	$incr_keep_cnt = false,
	$incr_age_max = false,
	$incr_levels = [],
	$incr_fill = false,
	$partial_age_max = false,
	$blackout_bad_ping_limit = false,
	$ping_max_msec = false,
	$ping_cmd = false,
	$blackout_good_cnt = false,
	$blackout_periods = false,
	$backups_disable = false,
	$xfer_method = 'rsync',
	$xfer_loglevel = '1',
	$smb_share_name = '',
	$smb_share_username = '',
	$smb_share_passwd = '',
	$smb_client_full_cmd = '',
	$smb_client_incr_cmd = '',
	$smb_client_restore_cmd = '',
	$tar_share_name = '',
	$tar_client_cmd = '',
	$tar_full_args = '',
	$tar_incr_args = '',
	$tar_client_restore_cmd = '',
	$rsync_client_cmd = '',
	$rsync_client_restore_cmd = '',
	$rsync_share_name = '',
	$rsyncd_client_port = false,
	$rsyncd_user_name = '',
	$rsyncd_passwd = '',
	$rsyncd_auth_required = false,
	$rsync_csum_cache_verify_prob = false,
	$rsync_args = [],
	$rsync_restore_args = [],
	$backup_files_only = [],
	$backup_files_exclude = [],
	$dump_pre_user_cmd = '',
	$dump_post_user_cmd = '',
	$dump_pre_share_cmd = '',
	$dump_post_share_cmd = '',
	$restore_pre_user_cmd = '',
	$restore_post_user_cmd = '',
	$user_cmd_check_status = true,
	$email_notify_min_days = false,
	$email_from_user_name = '',
	$email_admin_user_name = '',
	$email_notify_old_backup_days = false,
	$hosts_file_dhcp = 0,
	$hosts_file_more_users = '',
	) {
	include backuppc::params

	validate_re($ensure, '^(present\|absent)$',
	'ensure parameter must have a value of: present or absent')

	$directory_ensure = $ensure ? {
	'present' => 'directory',
	default => absent,
	}

	if empty($backuppc_hostname) {
	fail('Please provide the hostname of the node that hosts backuppc.')
	}

	validate_re($xfer_method, '^(smb\|rsync\|rsyncd\|tar)$',
	'Xfer_method parameter must have value of: smb, rsync, rsyncd or tar')
	if $blackout_periods != false {
	validate_array($blackout_periods)
	}
	validate_re($xfer_loglevel, '^[0-2]$',
	'Xfer_loglevel parameter must be a 0, 1 or 2')

	$real_incr_fill = bool2num($incr_fill)
	$real_backups_disable = bool2num($backups_disable)
	$real_rsyncd_auth_required = bool2num($rsyncd_auth_required)
	$real_user_cmd_check_status = bool2num($user_cmd_check_status)

	# With these xfer_methods we require sudo to grant access
	# from the backuppc server to this client. It may be managed
	# elsewhere so we allow it to be overridden with the manage_sudo
	# parameter.
	if $xfer_method in ['rsync', 'tar'] and ! empty($system_account)
	{
	validate_absolute_path($system_home_directory)

	if $xfer_method == 'rsync' {
	if $manage_rsync {
	package { 'rsync':
	ensure => installed,
	}
	}
	$sudo_command_noexec = '/usr/bin/rsync'
	}
	else {
	$sudo_command_noexec = $backuppc::params::tar_path
	}

	if $manage_sudo {
	package { 'sudo':
	ensure => installed,
	before => File['/etc/sudoers.d/backuppc'],
	}
	file { '/etc/sudoers.d/':
	ensure => directory,
	purge => false,
	require => Package['sudo'],
	}
	file_line { 'sudo_includedir':
	ensure => present,
	path => '/etc/sudoers',
	line => '#includedir /etc/sudoers.d',
	require => Package['sudo'],
	}
	}

	if ! empty($system_additional_commands) {
	$additional_sudo_commands = join($system_additional_commands, ', ')
	$sudo_commands = $additional_sudo_commands
	}

	if ! empty($system_additional_commands_noexec) {
	$additional_sudo_commands_noexec = join($system_additional_commands_noexec, ', ')
	$sudo_commands_noexec = "${sudo_command_noexec}, ${additional_sudo_commands_noexec}"
	} else {
	$sudo_commands_noexec = $sudo_command_noexec
	}

	if ! empty($sudo_commands) {
	file { '/etc/sudoers.d/backuppc':
	ensure => $ensure,
	owner => 'root',
	group => 'root',
	mode => '0440',
	content => "${system_account} ALL=(ALL:ALL) NOPASSWD: ${sudo_commands}\n",
	}
	} else {
	file { '/etc/sudoers.d/backuppc':
	ensure => 'absent',
	}
	}

	file { '/etc/sudoers.d/backuppc_noexec':
	ensure => $ensure,
	owner => 'root',
	group => 'root',
	mode => '0440',
	content => "${system_account} ALL=(ALL:ALL) NOEXEC:NOPASSWD: ${sudo_commands_noexec}\n",
	}

	user { $system_account:
	ensure => $ensure,
	home => $system_home_directory,
	managehome => true,
	shell => '/bin/bash',
	comment => 'BackupPC',
	system => true,
	password => sha1("tyF761_${::fqdn}${::uniqueid}"),
	}

	file { "${system_home_directory}/.ssh":
	ensure => $directory_ensure,
	mode => '0700',
	owner => $system_account,
	group => $system_account,
	}

	file { "${system_home_directory}/backuppc.sh":
	ensure => $ensure,
	owner => 'root',
	group => 'root',
	mode => '0755',
	content => template('backuppc/client/backuppc.sh.erb'),
	require => User[$system_account],
	}

	Ssh_authorized_key <<\| tag == "backuppc_${backuppc_hostname}" \|>> {
	user => $system_account,
	require => File["${system_home_directory}/.ssh"]
	}
	}

	if $::fqdn != $backuppc_hostname {
	@@sshkey { $::fqdn:
	ensure => $ensure,
	type => 'ssh-rsa',
	key => $::sshrsakey,
	tag => "backuppc_sshkeys_${backuppc_hostname}",
	}
	}

	@@file_line { "backuppc_host_${::fqdn}":
	ensure => $ensure,
	path => $backuppc::params::hosts,
	match => "^${::fqdn}.*$",
	line => "${::fqdn} ${hosts_file_dhcp} backuppc ${hosts_file_more_users}\t#puppetmanaged\n",
	tag => "backuppc_hosts_${backuppc_hostname}",
	}

	@@file { "${backuppc::params::config_directory}/pc/${::fqdn}.pl":
	ensure => $ensure,
	content => template("${module_name}/host.pl.erb"),
	owner => 'backuppc',
	group => $backuppc::params::group_apache,
	mode => '0640',
	tag => "backuppc_config_${backuppc_hostname}"
	}
	}