admin-scripts/bin/rsync-backup

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2024-07-07 17:17:47 +02:00
#!/usr/bin/env bash
# A script to perform incremental backups with rsync
# Source: https://linuxconfig.org/how-to-create-incremental-backups-using-rsync-on-linux
set -o errexit
set -o nounset
set -o pipefail
readonly BACKUP_DIR="/mnt/backup"
readonly DATETIME
DATETIME="$(date '+%Y-%m-%d_%H:%M:%S')"
readonly BACKUP_PATH="${BACKUP_DIR}/${DATETIME}"
readonly LATEST_LINK="${BACKUP_DIR}/latest"
readonly TEMP_DIR
TEMP_DIR=$(mktemp -d || echo "Failed to make temp dir"; exit 1)
chmod 700 "${TEMP_DIR}"
trap 'rm -rf "${TEMP_DIR}"; exit 0' 0 1 2 3 15
mkdir -p "${BACKUP_DIR}"
while read -r line; do
rsync -aAX "$line" "${TEMP_DIR}";
done </etc/rsync-includes.txt
rsync -av --delete "${TEMP_DIR}/" --link-dest "${LATEST_LINK}" --exclude=".cache" "${BACKUP_PATH}"
rm -rf "${LATEST_LINK}"
ln -s "${BACKUP_PATH}" "${LATEST_LINK}"