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docker-mariadbbackup-rclone/rootfs/app/backup.sh
paspo 293814277d
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2025-12-16 13:51:50 +01:00

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#!/bin/sh
STATUS_FILE=/last_backup_status.txt
MARIADB_HOST=${MARIADB_HOST:-db}
MARIADB_USER=${MARIADB_USER:-root}
MARIADB_PORT=${MARIADB_PORT:-3306}
MARIADB_PASSWORD=${MARIADB_PASSWORD:-1StrongPassword}
MARIADB_DATABASE=${MARIADB_DATABASE:-my-db}
COMPRESSION=${COMPRESSION:-gzip}
RCLONE_CONFIG_FILE=${RCLONE_CONFIG_FILE:-/config/rclone.conf}
RCLONE_REMOTE=${RCLONE_REMOTE:-myremote}
RCLONE_PATH=${RCLONE_PATH:-/backups}
KEEP_SUCCESFUL_DAYS=${KEEP_SUCCESFUL_DAYS:-30}
TMPDIR=$(mktemp -d)
DEST_FILENAME=$(date +%Y-%m-%d_%H-%M-%S).sql
BACKUP_FILE="${TMPDIR}/${DEST_FILENAME}"
RCLONE_DEST_PATH="${RCLONE_PATH}/$(date +%Y-%m-%d)"
trap cleanup EXIT
cleanup() {
rm -rf "${TMPDIR}"
echo "Removed temporary file"
}
trap interrupt INT
interrupt() {
echo "Backup interrupted"
echo "interrupted" > "${STATUS_FILE}"
exit 1
}
if [ ! -f "${RCLONE_CONFIG_FILE}" ]; then
echo "Rclone config file not found"
exit 1
fi
echo "Backup started"
dump_failed() {
echo "Database dump failed"
echo "dump failed" > "${STATUS_FILE}"
exit 1
}
mkdir_failed() {
echo "Backup mkdir failed"
echo "mkdir failed" > "${STATUS_FILE}"
exit 1
}
copy_failed() {
echo "Backup copy failed"
echo "copy failed" > "${STATUS_FILE}"
exit 1
}
delete_failed() {
echo "Cleanup delete failed"
exit 1
}
COMPRESSOR="cat"
if [ "${COMPRESSION}" = "gzip" ]; then
COMPRESSOR="gzip"
BACKUP_FILE="${BACKUP_FILE}.gz"
DEST_FILENAME="${DEST_FILENAME}.gz"
fi
if [ "${COMPRESSION}" = "bzip2" ]; then
COMPRESSOR="bzip2"
BACKUP_FILE="${BACKUP_FILE}.bz2"
DEST_FILENAME="${DEST_FILENAME}.bz2"
fi
if [ "${COMPRESSION}" = "xz" ]; then
COMPRESSOR="xz"
BACKUP_FILE="${BACKUP_FILE}.xz"
DEST_FILENAME="${DEST_FILENAME}.xz"
fi
if [ "${COMPRESSION}" = "zstd" ]; then
COMPRESSOR="zstd"
BACKUP_FILE="${BACKUP_FILE}.zst"
DEST_FILENAME="${DEST_FILENAME}.zst"
fi
echo "Dumping database into: ${BACKUP_FILE}"
mariadb-dump \
--add-drop-table \
--add-drop-trigger \
--add-locks \
--disable-keys \
--lock-all-tables \
--quick \
--triggers \
--tz-utc -v \
--host="${MARIADB_HOST}" \
--port="${MARIADB_PORT}" \
--user="${MARIADB_USER}" \
--password="${MARIADB_PASSWORD}" \
--databases "${MARIADB_DATABASE}" | "${COMPRESSOR}" > "${BACKUP_FILE}" || dump_failed
echo "Copying backup to remote"
rclone \
-v --config "${RCLONE_CONFIG_FILE}" \
mkdir "${RCLONE_REMOTE}:${RCLONE_DEST_PATH}" || mkdir_failed
rclone \
-v --config "${RCLONE_CONFIG_FILE}" \
copy "${BACKUP_FILE}" "${RCLONE_REMOTE}:${RCLONE_DEST_PATH}" || copy_failed
echo "success" > "${STATUS_FILE}"
echo "Backup completed"
echo "Cleaning up old backups"
rclone \
-v --config "${RCLONE_CONFIG_FILE}" \
lsd "${RCLONE_REMOTE}:${RCLONE_PATH}" | \
awk '{print $5}' | sort -r | tail -n +$((KEEP_SUCCESFUL_DAYS + 1)) \
| while read -r line; do
echo "Deleting backup: ${line}"
rclone \
-v --config "${RCLONE_CONFIG_FILE}" \
purge "${RCLONE_REMOTE}:${RCLONE_PATH}/${line}" || delete_failed
done
echo "Cleanup completed"