MYSQL-MARIADB-SNAPSHOT

Backups MySQL/MariaDB tables and views separately with mysqldump. Each table/structure as single file within a tgz archive.

Features

• Dumps Tables+Views separately (two files for each database)
• Suitable to use with small Databases < 1GB
• Exclude Databases from backup
• Backups are stored as compressed .tgz archives
• Backup multiple database instances
• Cleanup of old backups using find
• Custom options
• Uses debian-sys-maint user or a dedicated backup account
• Suitable to use with MySQL or MariaDB (both shipped with mysqldump)
• Optional file encryption via gpg using a publickey file

Package Installation

1. Add Aenon-Dynamics Repository

See AenonDynamics/CPR

2. Install the Package

apt-get update
apt-get install mysql-mariadb-snapshot

3. Configure the Backup Destination

Store the backups in /backup/mysql

mkdir -p /backup/mysql

Edit /etc/mysql-mariadb-snapshot/backup.conf

# bin locations
MYSQL_BIN=/usr/bin/mysql
MYSQLDUMP_BIN=/usr/bin/mysqldump

# backup location
MYSQL_BACKUP_LOCATION=/backup/mysql

# lifetime in days
MYSQL_BACKUP_LIFETIME=200

# filename - $NOW is defined as $(date +"%d-%m-%Y")
MYSQL_BACKUPFILE=mysql.$NOW.tgz

# tmp dir
MYSQL_TMP_DIR=/tmp/mysqldump
...

Schedule

Setup cron for scheduled backups

Example: Run Backup every day at 4:15

Note: in case you want to use another account then debian-sys-maint it is not required to run this script as root!

echo "15  4  *  *  * root /usr/bin/mysql-mariadb-snapshot /etc/mysql-mariadb-snapshot/backup.conf" > /etc/cron.d/mysql-mariadb-snapshot

Setup systemd for scheduled backups

mysql-mariadb-snapshot comes with a systemd service and timer. You can easily modify the scripts to match your needs (backup schedule, config path).

The service file is designed to work on per-instance base and uses the instance name as config file name /etc/mysql-mariadb-snapshot/%I.conf

Defaults

• /lib/systemd/system/mysql-mariadb-snapshot.timer
• /lib/systemd/system/mysql-mariadb-snapshot.service

Example: Run Backup every day at 4:30

File: /etc/systemd/system/mysql-mariadb-snapshot.timer

[Unit]
Description=mysql-mariadb-snapshot task daily

[Timer]
# Run at 04:30 am
OnCalendar=04:30

# do NOT start backup immediately if its missed (servers..)
Persistent=false

# linked unit instance -> use config file `/etc/mysql-mariadb-snapshot/backup.conf`
Unit=mysql-mariadb-snapshot@backup.service

[Install]
WantedBy=timers.target

Usage

mysql-mariadb-snapshot <config>

Backup Encryption

The backup - this means every single file within the tar archive - can optionally encrypted using a gnupg publickey. You should be familar with gnupg/openpgp before using this feature - otherwise the backups may become inaccesible.

Export a public key

gpg \
    --no-options \
    --export \
    "246C BBDF 5D82 D7CC 786B  6D6D 3693 5688 EC2C 82E9" > publickey.gpg

Configuration

...

# optional gpg encryption
GPG_RECIPIENT="246C BBDF 5D82 D7CC 786B  6D6D 3693 5688 EC2C 82E9"
GPG_PUBLICKEY="/etc/mariadb/backupkey.gpg"

Distributions

Tested with:

• Debian jessie
• Debian stretch
• Debian buster

Contribution

The .deb package is automatically generated via a Continuous Delivery Pipeline - please do not build packages manually!

License

MYSQL-MARIADB-SNAPSHOT is OpenSource and licensed under the Terms of Mozilla Public License 2.0. You're welcome to contribute