This is a small script to provide the status of a galera cluster over http.

With a (mysql) galera node if it is in a donor or joiner state, the port will be up but the server is not accepting queries.

This provides an http endpoint (/check-galera-status) which will return 500 if the server is down or galera is in a non-serving state. It will return 200 otherwise.

The body returned provides details.

This package can be build and run from source or in a docker container

This is the recommended method for running. Provided is a docker compose file for use. This must be updated with the proper variables for your setup.

Once the docker-compose has been updated it can be run as such:

docker-compse up

The second method of running this code is to build it from source

go get -u Shelnutt2/galera_http_check

To connect to mysql, the username and password are read from environmental variables. You must set these before you run the application

export MYSQL_USERNAME=user
export MYSQL_PASSWORD=password

If $GOPATH/bin is in your PATH then you can invoke it directly.

galera_http_check --host localhost

Else run it from $GOPATH

$GOPATH/bin/galera_http_check --host localhost