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Thursday, 30 July 2009 17:31 |
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I have a samba-shared drive on my Ubuntu machine at home which anything important is saved onto. This, along with any websites I maintain, is backed up nightly using incremental backups. This was quick & easy to set up and works really well.
I basically followed the instructions in the rsnapshot HOWTO. The changes I needed to make are outlined below. If you are lazy, you are Dave O'Loghlin, or you are me reading this at some point in the future while cursing a crashed server just download my /etc/rsnapshot.conf.
Salient points:
- My backup disk is a 1TB external USB disk mounted on /media/backup_disk. To ensure it is always mounted in the same place I mount using the UUID. I needed to change the snapshot_root and no_create_root parameters accordingly:
###########################
# SNAPSHOT ROOT DIRECTORY #
###########################
# All snapshots will be stored under this root directory.
#
snapshot_root /media/backup_disk/
# 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
I'm just interested in daily & weekly backups so I created the name & frequency of the intervals, thus:
#########################################
# BACKUP INTERVALS #
# Must be unique and in ascending order #
# i.e. hourly, daily, weekly, etc. #
#########################################
#interval hourly 6
interval daily 7
interval weekly 4
#interval monthly 3
Next I gave it the list of directories (and websites) I want it to backup:
###############################
### BACKUP POINTS / SCRIPTS ###
###############################
# LOCALHOST
backup /home/ detritus/
backup /etc/ detritus/
backup /usr/local/ detritus/
backup /media/shared/ detritus/
backup /media/videos/ detritus/
backup /var/log/rsnapshot detritus/
backup /etc/passwd detritus/
# DATABASE BACKUPS
backup
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:/usr/home/cianer/databaseBackups/ websites/
# CIANER.COM
backup
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:/usr/www/cianer.com/ websites/
# DOGSAID.IE
backup
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:/usr/www/dogsaid.ie/ websites/
CAVEAT 1: The gaps between words are TABS not spaces, and yank-yank-paste in vi converts them to spaces (at least in my version). Consider yourself warned!
CAVEAT 2: If your server uses symlinks (e.g. if /home is actually a symlink to /usr/home) then use the full path otherwise it'll copy the symlink & no more and you'll end up with no backups. I'm actually in two minds about typing that as I know Dave will be reading this and he's the one who symlinked /home to /usr/home in the first place so deserves some of the pain. =)
CAVEAT 3: There are spaces between the cianer.com and the :/usr/ in the example above which shouldn't be there. These were added by Joomla somehow & I don't know how to get rid of them, and don't care enough to find out. Don't put spaces there in your config file!
Since I want to back up directories from another server I needed to create ssh keypairs so rsnapshot could log in without needing a password. Insert your own security warnings here.
Finally set up two cronjobs (one for daily backups, one for weekly) as root & job done!
Note: The parameters passed to rsnapshot in the cronjob has to match the name of the intervals outlined in above:
root@Detritus:~# crontab roots.crontab
root@Detritus:~# crontab -l
# DO NOT EDIT THIS FILE - edit the master and reinstall.
# (roots.crontab installed on Tue Feb 19 22:28:37 2008)
# min hour day/mon month day /week command
0 3 * * * /usr/bin/rsnapshot daily
0 0 * * 1 /usr/bin/rsnapshot weekly
root@Detritus:~#
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