Being able to specify custom tags for a machine.
I would like to be able to tag a machine as part of a specific stack, such as Stack1 and Stack2, which is already implemented as the 'cluster' tag specified in chukwa-agent-conf.xml. I would also like to be able to tag each machine according to its role, such as WebServer or DataBase. This is not currently doable. The best solution would probably be to allow arbitrary tags. This functionality should be exposed also in the use of dump.sh, such that I can filter on any tag.