New rsync Remote, Incremental Backup Script – n2nBackup

With my Pi I took the opportunity to re-write my rsync backup scripts.

This new setup does everything my first shot did, especially incremental backups via rsync’s “–link-dest” command, but I also believe is more modular, even though I have not had the need to use all its (perceived) capabilities… Or completed them all.

Some Basic Capabilities

  • Does incremental local or remote rsync’ing
  • Able to use private certs for authentication
  • Accounts for labeling backups daily or monthly
  • Uses rsync profile directories
  • (future) Allows pre & post command executions

Setup Structure

n2nBackup:
total 20
drwxrwxr-- 2 4096 May 7 22:10 logs
-rwxrwxr-- 1 6857 May 7 22:10 n2nRsync.sh
-rwxrwxr-- 1 245 May 7 22:10 n2nWrapper.sh
drwxrwxr-- 3 4096 May 7 22:11 profiles

n2nBackup/logs:
total 0

n2nBackup/profiles:
total 4
drwxr-xr-- 2 4096 May 7 22:10 template

n2nBackup/profiles/template:
total 24
-rw-r--r-- 1 367 May 7 22:10 dest.conf
-rw-r--r-- 1 78 May 7 22:10 excludes.conf
-rwxr-xr-- 1 21 May 7 22:10 n2nPost.sh
-rwxr-xr-- 1 21 May 7 22:10 n2nPre.sh
-rw-r--r-- 1 585 May 7 22:10 rsync.conf
-rw-r--r-- 1 126 May 7 22:10 src_dirs.conf

Script Usage

Usage: n2nRsync.sh [-p profile] [-c] [-l] [-t] [-h]

 -p profile              rsync profile to execute
 -c                      use when running via cron
                         when used, will output to log file
                         otherwise, defaults to stdout
 -l                      list profiles available
 -t                      runs with --dry-run enabled
 -h                      shows this usage info

Sample crontab Usage

00 00 * * * /dir/n2nBackup/n2nRsync.sh -p profName -c

Some Details

Right now I’m running everything with the n2nRsync.sh.  I have not implemented the n2nWrapper or pre & post command execution stuff.  In my previous backup script, that was run directly on my Synology NAS, I had a need for some pre-backup commands, but for whatever reason… Past bad coding… Ignorance… Synology quirks… Accessing the data via NFS now… The issues I had to work around are no longer being experienced.

I still need to create cleanup scripts that will age-off data based on specified criteria.  My plan right now, since this backup scheme relies on hard links and thus, takes up far less space than independent daily full backups would, is to keep a minimum of 30 daily backups… And since this new setup also labels a single backup as “monthly”… The last 6 monthly backups.  Which are not any different than just a different named daily backup.

I may post the actual script text in the future, but for now I’ll just provide a tgz for download.

n2nBackup.tar.gz