Mit über 10 Jahren Erfahrungrsync-backup
README
Rsync-Backup
TO RESTORE SOMETHING, GO TO THE END OF THIS FILE AND READ THE RESTORE SECTION!
Introduction
This is a rsync-backup for many hosts. Although it has no theading, you can easily configure several hosts to be backed up.
All you need is a working ssh connection without password protection, so rsync can connect from a batch.
Conventions
The base-dir of the backup scripts is called <backup_base>.
Technical overview
There's a nodes-directory where the node's data and their configuration is stored. These are the files:
config A few configurable options, mostly defaults are ok exclude A list of files/dirs to exclude. Syntax is from rsync. data The directory where the daily snapshots are kept.
This is a rsync / hardlink - based backup. All same files are just hardlinked, which doesn't cost much space, but means if you CHANGE something in a backed up file, you CHANGE it in ALL SAME BACKED UP FILES as long as they didn't change in time. Well, usually you simply don't touch any backed up files. Just be warned.
Different files are copied over. There's no space saved on similar or same parts of the files.
All nodes defined in
<backup_base>/nodes
will be backed up on each call of
<backup_base>/bin/backup.sh
Creating a node
Creating a node can be done by simmply creating the files seen in the "Technical overview" part of this document, or by simply calling
<backup_base>/bin/newnode.sh my.new.server.int
This will create a skel directory from
<backup_base>/.skel
which is perfectly filled with default values. It's just there to save time ;) Of course you may change your .skel-values if you need to.
Backup
To backup all nodes, just call
<backup_base>/bin/backup.sh
To backup a single node, just call
<backup_base>/bin/_backup.sh <backup_base>/nodes/your.node.int
The script needs to get the path to the node's home.
Restore
To restore something you can have a live view on the backup'd data by simply going to
<backup_base>/nodes/your.node.int/data/<your path>
You can then "restore" the data by copying it over to where it belongs / was backed up from, e.g. by scp or rsync.
rsync-backup.tar.gz