MySQL / MariaDB to Tarantool replication implementation

Tested with:

• Tarantool 1.10.3
• MariaDB Server 10.1, 10.2 and 10.3

However it should be compatible with virtually every MariaDB version, or MySQL if you use correct python library.

Installation

• Install Tarantool with python bindings
  • for Debian
    • apt-get install tarantool tarantool-python
    • pip3 install tarantool
• Install Python Mysql Replication python library
  • If you use MariaDB install https://github.com/smarek/python-mariadb-replication
  • If you use MySQL install https://github.com/noplay/python-mysql-replication

For MariaDB:

pip3 install -r requirements.txt

git clone --recursive https://github.com/smarek/python-mariadb-replication.git
cd python-mariadb-replication
python3 setup.py install

For MySQL:

pip3 install -r requirements.txt

pip3 install install mysql-replication

• Install this project as a systemd unit service using sudo install.sh
• Modify /opt/MariaDBReplica/replica.yml
• Start the service systemctl start replicatord.service

This can be also run by hand, without installing anything, just modify replica.yml and use ./replica.py

Notes

• This project is mostly compatible with official https://github.com/tarantool/mysql-tarantool-replication
  • We do not support function calls (insert_call, update_call, delete_call)
  • We support mapping columns by name from source to target ( no need to have exactly same columns in both locations )
  • We support addressing spaces by names, not by ID
• Limitations
  • We do not type-check tarantool schema / fields / format, so if the DB data do not fit the Tarantool schema, it will fail terribly
  • We do not do binlog_pos or similar concept, MySQL tables are dumped on process start, and then the binlog is consumed, currently no binlog position resume is in place

Maintenance

Listing commands just for completeness

• systemctl status replicatord.service
• systemctl stop replicatord.service
• systemctl start replicatord.service
• journalctl -xf -u replicatord.service - use CTRL+C to stop the logs from comming
• journalctl -u replicatord.service