Astrogoat is a MySQL replication lag throttling simulation tool. It provides a sophisticated testing rig based on docker containers so that you can easily experiment with different throttling strategies (e.g. tune a PID controller).
- Goat: the core logic. See
main.goandgoat/package - Replication cluster: simple master and slave percona mysql configuration
- Toxiproxy: configurable network condition between the master and slave
pt-heartbeat: used to monitor replication lag- Prometheus: metric collection - currently configured to scrape replication lag from the pt-heartbeat table (
meta.heartbeat) - Grafana: frontend to Prometheus, allows for viewing replication lag in realtime
- Start the test replication cluster:
docker-compose up -d
- Install required gems and run the setup script:
bundle
./script/setup-repl
- Toxiproxy settings can be tuned in
./script/setup-repland then updated with
./script/setup-repl toxiproxy
- Try putting some load on the database
go run main.go
- Monitor replication lag with Grafana at
localhost:3000
