Backup tools

README.md

Backing up

Preparation

1. Copy the backup and backup-rotate scripts to /usr/local/bin
2. Create a /backup folder (which might be symlink to a mounted file system`

Define cron jobs

Add cron jobs (in /etc/cron.d/backup) to run rotation first, then for each folder which is to be saved:

0 0 * * * root /usr/local/bin/backup-rotate
10 0 * * * root /usr/local/bin/backup /etc etc
10 0 * * * root /usr/local/bin/backup /var/lib/docker docker --exclude overlay2
10 0 * * * root /usr/local/bin/backup /var/apps apps
10 0 * * * root /usr/local/bin/backup /var/volumes volumes

backup

#!/bin/sh

HOSTNAME=`/bin/hostname`
BACKUP="/backup/${HOSTNAME}"
SRC="$1"
DEST="$2"
EXTRA="$3"

mkdir ${BACKUP}.0/${DEST}
rsync -avh ${EXTRA} --delete --link-dest=${BACKUP}.1/${DEST}/ ${SRC}/ ${BACKUP}.0/${DEST}/

backup-rotate

#!/bin/sh

HOSTNAME=`/bin/hostname`
BACKUP="/backup/${HOSTNAME}"

if [ ! -d /backup ]; then
	mkdir /backup
fi

rm -r ${BACKUP}.7
mv ${BACKUP}.6 ${BACKUP}.7
mv ${BACKUP}.5 ${BACKUP}.6
mv ${BACKUP}.4 ${BACKUP}.5
mv ${BACKUP}.3 ${BACKUP}.4
mv ${BACKUP}.2 ${BACKUP}.3
mv ${BACKUP}.1 ${BACKUP}.2
mv ${BACKUP}.0 ${BACKUP}.1
mkdir ${BACKUP}.0