Rsnapshot backups en Gnu/Linux. (1/3)

rsnapshot

rsnapshot-backup-copies-of-security-tutorial

Rsnapshot backups en Gnu/Linux. (1/3)
Rsnapshot backups en Gnu/Linux. (2/3)
Rsnapshot backups en Gnu/Linux. (3/3)

Make backup (Backups) incremental and automatic via rsync, uses hardlinks for incremental backups with the backups that take up little space on the disk.

Basically, the program makes a copy first and subsequent copies copy new files and modified, creating hard links files that already existed. So only occupy successive copies the new files.

Configuration File

/etc / rsanpshot.conf

Use cron to automate backups.

Stage

Server which we want to back multiple folders within a folder on the same server.

Server

Hostname : Server
Operating System : Ubuntu server 12.04
IP 192.168.1.235

Folders to save:

/home
/etc.
/var / log

Target folder:

/backup

Copies save: Copies are stored every day the last 7 days
Copies are stored weekly fan 4 weeks
Copies are stored in the last month 6 months
Copies are stored at the last year 5 years old

  1. Instalar rsnapshot
$ sudo apt-get install rsnapshot
  1. Configuring rsnapshot editing the / etc / rsanpshot.conf
 $ sudo nano / etc / rsnapshot.conf

The values ​​of interest are the following

  • snapshot_root indicates where we will store the backup rod end is important but does not recognize the addresses of directories. Do not put spaces but it is tabulated for the same reason.
			snapshot_root   /backup/
  • no_create_root It is used to tell the program whether to create the target directory or not, uncomment (#) if you make the backup on a removable device. As our case is not what we said.
			#no_create_root	
  • cmd_cp route of the cp command (this is left as)
			cmd_cp / bin / cp 
  • cmd_rm ruta del rm command (this is left as)
			cmdrm / bin / rm
  • cmd_rsync rsync command path (this is left as)
			cmd_rsync / bin / bin / rsync
  • cmd_ssh ssh command path uncomment if we have to back up the network with ssh (this is left as)
			#cmd_ssh		/usr/bin/ssh
  • cmd_of Used to use rsnapshot with du to find the space they are occupying backups. (Comment removed)
			cmd_du		/usr/bin/du 
  • cmd_rsnapshot_diff Allows you to view the differences between the different backup. (Comment removed)
			cmd_rsnapshot_diff		/usr/bin/rsnapshot-diff
  • retain Used to indicate how many copies will be stored as a function of time hourly 6 indicates that each time a backup is performed and stored those of 6 last copies. To configure the dial above leave this section follows.
# retain hourly 6   
retain daily 7
retain weekly 4
retain monthly 6
retain yearly 5
  • logfile Used to indicate where is the rsnapshot log file. (Comment removed)
			logfile / var / log / rsnapshot.log
  • backup Used to indicate where are folders you want to save the backup. After backup the directory indicated and then if we save localhost/ saves it in the folder at snapshot_root (/backup) for example if we data / we would keep in /Backup / data / to save the data we want this section would be as follows.
 backup /home/ localhost/
 backup / etc / localhost /
  backup / var / log / localhost / 

Once these parameters modified the configuration file would stay follows. Orange frame configuring parameters.

#################################################
 # rsnapshot.conf - rsnapshot configuration file #
 #################################################
 # #
 # PLEASE BE AWARE OF THE FOLLOWING RULES: #
 # #
 # This file requires tabs between elements #
 # #
 # Directories require a trailing slash: #
 # right: /home/ #
 # wrong: /home #
 # #
 #################################################

 #######################
 # CONFIG FILE VERSION #
 #######################

 config_version 1.2

 ###########################
 # SNAPSHOT ROOT DIRECTORY #
 ###########################

 # All snapshots will be stored under this root directory.
 #
 snapshot_root /backup/

 # If no_create_root is enabled, rsnapshot will not automatically create the
 # snapshot_root directory. This is particularly useful if you are backing
 # up to removable media, such as a FireWire or USB drive.
 #
 #no_create_root 1

 #################################
 # EXTERNAL PROGRAM DEPENDENCIES #
 #################################

 # LINUX USERS: Be sure to uncomment "cmd_cp". This gives you extra features.
 # EVERYONE ELSE: Leave "cmd_cp" commented out for compatibility.
 #
 # See the README file or the man page for more details.
 #
 cmd_cp /bin/cp

 # uncomment this to use the rm program instead of the built-in perl routine.
 #
 cmd_rm /bin/rm

 # rsync must be enabled for anything to work. This is the only command that
 # must be enabled.
 #
 cmd_rsync / usr / bin / rsync

 # Uncomment this to enable remote ssh backups over rsync.
 #
 #cmd_ssh / usr / bin / ssh

 # Comment this out to disable syslog support.
 #
 cmd_logger / usr / bin / logger

 # Uncomment this to specify the path to "of" for disk usage checks.
 # If you have an older version of "of", you may also want to check the
 # "du_args" parameter below.
 #
 cmd_du /usr/bin/du

 # Uncomment this to specify the path to rsnapshot-diff.
 #
 cmd_rsnapshot_diff /usr/bin/rsnapshot-diff

 # Specify the path to a script (and any optional arguments) to run right
 # before rsnapshot syncs files
 #
 #cmd_preexec /path/to/preexec/script

 # Specify the path to a script (and any optional arguments) to run right
 # after rsnapshot syncs files
 #
 #cmd_postexec / path / to / postexec / script

 # Paths to lvcreate, lvremove, mount and umount commands, for use with
 # Linux LVMs.
 #
 #linux_lvm_cmd_lvcreate /sbin/lvcreate
 #linux_lvm_cmd_lvremove /sbin/lvremove
 #linux_lvm_cmd_mount /bin/mount
 #linux_lvm_cmd_umount /bin/umount
#########################################
 # BACKUP INTERVALS #
 # Must be unique and in ascending order #
 # I.E. hourly, daily, weekly, etc.. #
 #########################################

 # retain hourly 6
 retain daily 7
 retain weekly 4
 retain monthly 6
 retain yearly 5
############################################
 # GLOBAL OPTIONS #
 # All are optional, with sensible defaults #
 ############################################

 # Verbose level, 1 through 5.
 # 1 Quiet Print fatal errors only
 # 2 Default Print errors and warnings only
 # 3 Verbose Show equivalent shell commands being executed
 # 4 Extra Verbose Show extra verbose information
 # 5 Debug mode Everything
 #
 verbose 2

 # Same as "verbose" above, but controls the amount of data sent to the
 # logfile, if one is being used. The default is 3.
 #
 loglevel 3

 # If you enable this, data will be written to the file you specify. The
 # amount of data written is controlled by the "loglevel" parameter.
 #
 logfile / var / log / rsnapshot.log

 # If enabled, rsnapshot will write a lockfile to prevent two instances
 # from running simultaneously (and messing up the snapshot_root).
 # If you enable this, make sure the lockfile directory is not world
 # writable. Otherwise anyone can prevent the program from running.
 #
 lock file / var / run / rsnapshot.pid

 # By default, rsnapshot check lockfile, check if PID is running
 # and if not, consider lockfile as stale, then start
 # Enabling this stop rsnapshot if PID in lockfile is not running
 #
 #stop_on_stale_lockfile 0

 # Default rsync args. All rsync commands have at least these options set.
 #
 #rsync_short_args -a
 #rsync_long_args --delete --numeric-ids --relative --delete-excluded

 # ssh has no args passed by default, but you can specify some here.
 #
 #ssh_args -p 22

 # Default arguments for the "of" program (for disk space reporting).
 # The GNU version of "of" is preferred. See the man page for more details.
 # If your version of "of" doesn't support the -h flag, try -k flag instead.
 #
 #du_args-csh

 # If this is enabled, rsync won't span filesystem partitions within a
 # backup point. This essentially passes the -x option to rsync.
 # The default is 0 (off).
 #
 #one_fs 0

 # The include and exclude parameters, if enabled, simply get passed directly
 # to rsync. If you have multiple include/exclude patterns, put each one on a
 # separate line. Please look up the --include and --exclude options in the
 # rsync man page for more details on how to specify file name patterns.
 #
 #include ???
 #include ???
 #exclude ???
 #exclude ???

 # The include_file and exclude_file parameters, if enabled, simply get
 # passed directly to rsync. Please look up the --include-from and
 # --exclude-from options in the rsync man page for more details.
 #
 #include_file /path/to/include/file
 #exclude_file /path/to/exclude/file

 # If your version of rsync supports --link-dest, consider enable this.
 # This is the best way to support special files (FIFOs, etc.) cross-platform.
 # The default is 0 (off).
 #
 #link_dest 0

 # When sync_first is enabled, it changes the default behaviour of rsnapshot.
 # Normally, when rsnapshot is called with its lowest interval
 # (i.e.: "rsnapshot hourly"), it will sync files AND rotate the lowest
 # intervals. With sync_first enabled, "rsnapshot sync" handles the file sync,
 # and all interval calls simply rotate files. See the man page for more
 # details. The default is 0 (off).
 #
 #sync_first 0

 # If enabled, rsnapshot will move the oldest directory for each interval
 # to [interval_name].delete, then it will remove the lockfile and delete
 # that directory just before it exits. The default is 0 (off).
 #
 #use_lazy_deletes 0

 # Number of rsync re-tries. If you experience any network problems or
 # network card issues that tend to cause ssh to crap-out with
 # "Corrupted MAC on input" errors, for example, set this to a non-zero
 # value to have the rsync operation re-tried
 #
 #rsync_numtries 0

 # LVM parameters. Used to backup with creating lvm snapshot before backup
 # and removing it after. This should ensure consistency of data in some special
 # cases
 #
 # LVM snapshot(s) size (lvcreate --size option).
 #
 #linux_lvm_snapshotsize 100M

 # Name to be used when creating the LVM logical volume snapshot(s).
 #
 #linux_lvm_snapshotname rsnapshot

 # Path to the LVM Volume Groups.
 #
 #linux_lvm_vgpath / dev

 # Mount point to use to temporarily mount the snapshot(s).
 #
 #linux_lvm_mountpath /path/to/mount/lvm/snapshot/during/backup

 ###############################
 ### BACKUP POINTS / SCRIPTS ###
 ###############################

 # LOCALHOST

 backup / home / localhost /
 backup / etc / localhost /
 backup / var / log / localhost /
 #backup /home/ localhost/
 #backup /etc/ localhost/
 #backup /usr/local/ localhost/
 #backup /var/log/rsnapshot localhost/
 #backup /etc/passwd localhost/
 #backup /home/foo/My Documents/ localhost/
 #backup /foo/bar/ localhost/ one_fs=1, rsync_short_args=-urltvpog
 #backup_script /usr/local/bin/backup_pgsql.sh localhost/postgres/
 # You must set linux_lvm_* parameters below before using lvm snapshots
 #backup lvm://vg0/xen-home / lvm-vg0/xen-home /

 # EXAMPLE.COM
 #backup_script /bin/date "+ backup of example.com started at %c" unused1
 #backup root@example.com:/home/ example.com/  rsync_long_args=--bwlimit=16,exclude=core
 #backup root@example.com:/etc/ example.com/ exclude=mtab,exclude=core
 #backup_script ssh root@example.com "MySQLDump-A > /var / db / dump / mysqlsql" unused2
 #backup root@example.com:/var/db/dump/ example.com/
 #backup_script /bin/date "+ backup of example.com ended at %c" unused9

  # CVS.SOURCEFORGE.NET
  #backup_script /usr/local/bin/backup_rsnapshot_cvsroot.sh rsnapshot.cvs.sourceforge.net/

  # RSYNC.SAMBA.ORG
  # Backup rsync://rsync.samba.org / rsyncftp / rsync.samba.org / rsyncftp /

 

To verify the correct configuration of rsnapshot run the following command

$ sudo rsnapshot configtest
Syntax OK

When returns Syntax OK is that the configuration is correct.

We found that works by performing the first backup with the command.

$ sudo rsnapshot daily

We found that the folder is created /backup/daily.0/localhost binders containing home, y etc var / log we wanted to save.

$ sudo ls  -la /backup/daily.0/localhost

The next day we will continue with our tutorial rsnapshot.

Rsnapshot backups en Gnu/Linux. (1/3)
Rsnapshot backups en Gnu/Linux. (2/3)
Rsnapshot backups en Gnu/Linux. (3/3)


About Ignacio Alba Obaya

Microcomputer and Technical Training for Employment. Lover of new technologies. Manager GNU / Linux and Windows.

5 comments:

  1. Hello,

    In case you are interested, ElkarBackup is a backup software using rsnapshot. It is basically a web interface for rsnapshot, but also much more.

    https://github.com/elkarbackup/elkarbackup

    In addition to facilitating the management and recovery of backups, I think its great potential are pre-scripts and post-scripts. Course, software is free and the code is available.

  2. If I am daily backing up a local directory, say /backup/ into rsnapshot directory /backup_r/, is there any way of NOT requiring /backup_r/daily.0/backup/ to be a copy, but rather a set of links to /backup, thereby saving disk space?

    Thanks.

    Lester

  3. I think a good solution is: Start with /backup_r/ empty. Then:

    mkdir -m 0755 -p /backup_r/daily.0/
    /bin/cp -al /backup/ /backup_r/daily.0/ &

    Since /backup/ is already backed up by VPS provider for a few days, then this should work for filling in more days. I just do not know if there are any downsides to this plan?

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