I want to run a local cluster using the docker-compose files from Basho on docker hub. However I need to change the quanta span configuration variable (usually in /etc/riak/riak.conf) called riak_kv.query.timeseries.max_quanta_span. This is usally set to =5 in riak.conf. How can I set this to a larger number across the coordinator and cluster Docker nodes (the above docker-compose.yml creates one coordinator and then the web page suggests starting 4 members, for a 5-node single-machine cluster).
Check out the following blog post on running Riak in Docker:
http://basho.com/posts/technical/running-riak-in-docker/
Under the advanced configuration section it gives you four different options for how to customize your configuration.