duplicity_backup by mig5

duplicity_backup.sh

#!/bin/bash

# Duplicity Backup script
# written by mig5

# Functions that define which API to use

function amazon_s3() {
  export AWS_ACCESS_KEY_ID=XXXXXXXXXXXXXXXXX
  export AWS_SECRET_ACCESS_KEY=XXXXXXXXXXXXXXXXXX
  DEST=s3+http://gbd_${SERVER}/$dir
}

function rackspace_cloud() {
  export CLOUDFILES_USERNAME=XXXXXXXXXXXXXXXXXXX
  export CLOUDFILES_APIKEY=XXXXXXXXXXXXXXXXXXX
  DEST=cf+http://gbd_${SERVER}_$dir
}

if [ ! `whoami` = "root" ] ; then
  echo "You must run this script as root"
  exit 1
fi

## Configurable variables

# Which API/provider to backup to?
# Options: amazon_s3 / rackspace_cloud
PROVIDER=amazon_s3

# Server name
SERVER=`hostname -f`

# How often should we make a full backup? Recommended: 3 months
FULL_BACKUPS="3M"

# Remove old backups? 0 for no, 1 for yes
REMOVE_OLD_BACKUPS=1

# How often should we purge old backups? Recommended: 12 months.
REMOVE_OLDER_THAN="12M"

# Used for Duplicity's GPG encryption
export PASSPHRASE=XXXXXXXXXXXXXXXXXXXXXX

# Args to pass to duplicity
backup_options="--full-if-older-than $FULL_BACKUPS --exclude-other-filesystems"
maintenance_options="remove-older-than $REMOVE_OLDER_THAN --force"

# An array of directories to back up
DIRS=`ls -1 / | egrep -v "cdrom|dev|initrd|lib64|lost|media|mnt|nonexistent|proc|selinux|sys|tmp|vmlinuz"`

## Backup code below. You should not need to edit anything here.

# Loop over each dir and perform the backup.
for dir in ${DIRS[@]}; do
  echo "Backing up /$dir..."

  # A special clause for /root. We don't want the local duplicity cache data
  if [ $dir = "root" ]; then
    extra_options="--exclude /root/.cache"
  fi

  if [ $dir = "home" ]; then
    extra_options="--exclude /home/jenkins/.cache"
  fi

  # Decide which API to use based on the provider set.
  $PROVIDER
  duplicity $backup_options $extra_options /$dir $DEST || exit 1

  unset extra_options

  if [ $REMOVE_OLD_BACKUPS -eq 1 ]; then
    # Do some maintenance on the remote end to clean up old backups
    echo "Performing routine maintenance on /$dir..."
    duplicity $maintenance_options $DEST || exit 1
  fi
done

unset PASSPHRASE