Hi, I'm using Mitaka on ubuntu 16.04 and I have many problems in horizon. I can see this in the logs of all components: "OperationalError: (pymysql.err.OperationalError) (1040, u'Too many connections')" If I increase the max_connections on mysql works well a few minutes but the same error. Maybe Openstack don't close connections with Mysql. The version of Mysql is 5.7. Any suggestions? Regards, Fran -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20160530/d3eb0f51/attachment.html>