mysql wait_timeout too short ootb

[epcim]

I found my users to be time-outed frequrently. I found that ootb on ubuntu12.04 and mysql cookbook the my.cnf contains wait_timeout = <%= node['mysql']['tunable']['wait_timeout'] %> is se to 180 which seems to be not really familiar and cause HTTP 500 during the time of 180s of inactivity while creating an issue in redmine etc. (quite common).

I advise to set longer timeout by default for redmine cookbook to avoid the not a nice behavior.

Found the same issue at:
http://www.redmine.org/boards/2/topics/31695

Found solution:
http://community.bitnami.com/t/lost-connection-to-mysql-server-during-query/5110/11