# sshbackup
sshbackup is a shell script for doing incremental backups.
it creates as many incremental versions of a folder as you
wish for and it does that with local folders as well as with
remote folders.

### installation
```sh
sudo wget https://raw.github.com/beyondthewall/sshbackup/0.3/sshbackup -o /usr/bin/sshbackup
sudo chmod +x /usr/bin/sshbackup
```


### usage
```
"usage: sshbackup <options> source destination [versions]"
"source/destination example: [[user@]server:]/path/to/files"

"OPTIONS:"
   -h, --help                show this message"
   -v, --version             version information"

   -c, --config <file>       alternate config file [~/.sshbackup]"
   -l, --list <file>         list of sources and destinations"
   -s, --sshkey <file>       alternate sshkey [~/.ssh/id_rsa]"
```


### scheduling
using cronjobs is the way to go. example /etc/crontab:
```
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
MAILTO="admin@example.com"

#m h dom mon dow user  command
0 2     * * *   root    sshbackup /path/to/source /path/to/destination 5
0 3     * * *   root    sshbackup -s /path/to/sshkey -l /path/to/listfile
0 4     * * *   root    sshbackup bkpuser@server:/path/to/source /path/to/destination 30
```


### notifications
utilize crons MAILTO directive for getting error notifications.
```
MAILTO=admin@example.com
```


### automation
for automated backups configure a sshkey for the root user and
configure your remote machines to trust that key.
```
sudo su
ssh-keygen
ssh-copy-id <remote machine>
```
you must add the backupuser to /etc/sudoers on your remote servers as well
to make automated backups work. type:
```
sudo visudo #this will open /etc/sudoers in a texteditor
```
and add following at the end of that file:
```
backupuser ALL=(root)NOPASSWD: /usr/bin/rsync
```

you can use a file which should have a source/destination combination each line.
example listfile:
```
#<source> <destination> [<versions>]
david@dev.socialnerds.org:/home/david /home/david/Downloads/devhome 30
backupuser@dev.socialnerds.org:/home/gollum/ /home/david/Downloads/gollum
/home/david/something /home/david/backup 5
```


### ~/.sshbackup
an example config for default values looks like this [optional]:
```
#rsync options.
rsyncoptions="-pogEthrzl --numeric-ids --no-motd"
#dotglob option removes bug while rsyncing folder with no visible files in it.
remotecmd="shopt -s dotglob; /usr/bin/sudo /usr/bin/rsync"
localcmd="/usr/bin/rsync"
sshkeyfile="$HOME/.ssh/id_rsa"
```

### future features
- [x] notification on errors (with cron for now)
- [ ] useful logging
- [ ] remote settings deployment
- [ ] bandwidth limits
- [ ] sshkey creation/management
- [ ] some kind of optional reports/stats
- [ ] install missing dependencies