We are running a cluster of bamboo and we'd like to know what is the right way to do housekeeping in bamboo directories and workspaces since they grow exponentially on our environment. On the internet we can only find a set of cron jobs.
Setting up expiry settings is the best you can do with Bamboo: https://confluence.atlassian.com/bamboo/configuring-global-expiry-289277253.html
If you need a better solution, it has to be some kind of a cron job. You can even have Bamboo cleanup builds, with a script task, but then you need to make sure they run on all the agents!