Backup with rsnapshot
From Andreida
prepare install from backport
If the package is only in the backport, you will have to use that: Using_a_backport
install
apt-get install rsnapshot
edit, tabs instead of spaces
This is important: USE TABS BETWEEN COLUMNS!
- use tabs where the other lines indicate they use tab, spaces will not work
- if you use vim to edit rsnapshot.conf, put the following into your .exrc
:autocmd BufRead rsnapshot.conf set noexpandtab
or use
set list set noexpandtab
and then use "tab" instead of "space" where you see tabs (^I).
prepare ssh to other servers IF NEEDED
If you want to backup other servers, you will need to connect with ssh to them. Prepare a ssh-key without password, add the public version of it to the authorized_keys of the other system's correct user and create/modify a ~/.ssh/config which allows to ssh into the other system with a simple command like
ssh server-wiki
where user, port, identity file and ServerAliveInterval are all set in the config file already.
Example:
Host *
ServerAliveInterval 15
IdentityFile ~/.ssh/id_rsa
Host server-wiki
HostName wwww.your-super-cool-server.com
Port 22
User root
Host server-games
HostName games.your-super-cool-2nd-server.net
Port 1022
User admin
setup
- edit /etc/rsnapshot.conf
- enable cmd_cp
- enable cmd_du
cmd_du /usr/bin/du
- enable the schedule
interval hourly 6 interval daily 7 interval weekly 4 interval monthly 3
- add directories to backup
backup /etc/ localhost/ backup /var/www/home/ localhost/
- add script to use to generate files which you want to backup
backup_script /root/bin/backup_my_db localhost/dbbackup/
- create the db-backup script, in this case /root/bin/backup_my_db
#!/bin/bash mysqldump -u<USER> -p'<PASSWORD>' --all-databases > mysql_backup.sql
- or instead of scripting, use multiple exec commands:
backup_exec ssh server-wiki "rm -rf /var/db-dump/" backup_exec ssh server-wiki "mkdir /var/db-dump/" backup_exec ssh server-wiki "mysqldump -uroot -p'YourPassword' wiki_1 > /var/db-dump/mysql_backup-wiki-1.sql" backup_exec ssh server-wiki "mysqldump -uroot -p'YourPassword' wiki_2 > /var/db-dump/mysql_backup-wiki-2.sql" backup server-wiki:/var/db-dump/ server-wiki/
And make always sure to use tabs between columns.
cronjobs
- enable the cronjobs
0 */4 * * * /usr/bin/rsnapshot hourly 50 23 * * * /usr/bin/rsnapshot daily 40 23 * * 6 /usr/bin/rsnapshot weekly 30 23 1 * * /usr/bin/rsnapshot monthly
ssh backup of remote sites
- enable ssh at all
cmd_ssh /usr/bin/ssh
- set the parameters if you really need to, prefer ~/.ssh/config
- there is no need to give "-F /home/backup/.ssh/config" or "-F /root/.ssh/config", it will be used automatically
ssh_args -o BatchMode=yes -p 22
- I have mine disabled
# ssh_args
- create an entry for the backup like
backup root@your-remote-host-in-config-via-ssh-key:/etc/ your-remote-host/
- install rsync at the remote host
apt-get install rsync
- make sure the remote system has the needed hostkeys
ssh-keygen -A
- give absolute full paths for "IdentityFile" in your config
check
- check the config from the shell
rsnapshot configtest
This is what I use during creation of my backup script(s):
clear;rsnapshot configtest && rsnapshot -v hourly && echo ----- && du -hcs /var/cache/rsnapshot/*
example
################################################# # rsnapshot.conf - rsnapshot configuration file # ################################################# # # # PLEASE BE AWARE OF THE FOLLOWING RULE: # # # # This file requires tabs between elements # # # ################################################# ####################### # CONFIG FILE VERSION # ####################### config_version 1.2 ########################### # SNAPSHOT ROOT DIRECTORY # ########################### # All snapshots will be stored under this root directory. # # snapshot_root /var/cache/rsnapshot/ snapshot_root /var/rsnapshot/ # 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 "du" for disk usage checks. # If you have an older version of "du", 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 LEVELS / INTERVALS # # Must be unique and in ascending order # # e.g. alpha, beta, gamma, etc. # ######################################### interval hourly 6 interval daily 7 interval weekly 4 interval monthly 3 #retain alpha 6 #retain beta 7 #retain gamma 4 #retain delta 3 ############################################ # 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. # If you want the rsync output, you have to set it to 4 # 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. # lockfile /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 "du" program (for disk space reporting). # The GNU version of "du" is preferred. See the man page for more details. # If your version of "du" 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 enabling 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 alpha"), 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 fail with errors like # "Corrupted MAC on input", 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 /root/ 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/ # wiki backup your-wiki:/etc/ server-wiki/ backup your-wiki:/home/ server-wiki/ backup your-wiki:/var/www/ server-wiki/ backup your-wiki:/var/lib/mediawiki/ server-wiki/ backup_exec ssh your-wiki "rm -rf /var/db-dump/" backup_exec ssh your-wiki "mkdir /var/db-dump/" backup_exec ssh your-wiki "mysqldump -uroot -p'your-password' wiki_your_name_1 > /var/db-dump/mysql_backup-wiki-your-name-1.sql" backup_exec ssh your-wiki "mysqldump -uroot -p'your-password' wiki_your_name_2 > /var/db-dump/mysql_backup-wiki-your-name-2.sql" backup_exec ssh your-wiki "tar zchf /var/db-dump/your-name-1-images.tgz -C / var/www/wiki.your-wiki-1/images/" backup_exec ssh your-wiki "tar zchf /var/db-dump/your-name-2-images.tgz -C / var/www/wiki.your-wiki-2/images/" backup your-wiki:/var/db-dump/ server-wiki/ # mail backup your-mail:/etc/ server-mail/ backup your-mail:/home/ server-mail/ # EXAMPLE.COM #backup_exec /bin/date "+ backup of example.com started at %c" #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_exec ssh root@example.com "mysqldump -A > /var/db/dump/mysql.sql" #backup root@example.com:/var/db/dump/ example.com/ #backup_exec /bin/date "+ backup of example.com ended at %c" # 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/
