server-scripts/backup-mysql

#!/usr/bin/env bash
# TARGET: Backup-Ziel
# IGNORE: Liste zu ignorierender Datenbanken (durch | getrennt)
IGNORE="mysql|information_schema|performance_schema|test"
PASSWORD="$(cat /etc/nixos/secrets/mysql-password)"

set -eu -o pipefail

export PATH="/usr/bin/:$PATH"

DBS="$(lxc-attach -n mysql -- mysql --host="mysql" --user="root" --password="$PASSWORD" -Bse 'show databases' | grep -Ev $IGNORE)"

rm -f *.sql.bz2

for DB in $DBS; do
  lxc-attach -n mysql -- mysqldump --host="localhost" --user="root" --password="$PASSWORD" --skip-extended-insert --skip-comments "$DB" | bzip2 -c > "$DB.sql.bz2"
done

echo "$0 - Backup erfolgreich durchgefuehrt"
exit 0