3e4eb35653
Django's orm layer will not auto-reconnect after it looses the connection to the mysql server, until you manually close the database connection in django 1.6 and above. (see: https://code.djangoproject.com/ticket/21597) This is an issue for persistant connections, as MySQL will timeout inactive connections, and any loss of the db connection will cause the stacktach worker to simply repeat the error "MySQL server has gone away" until restarted. This fix will allow the stacktach worker to properly reconnect. Change-Id: I0b0bc75b7e21fd183f3b0e7a55d727ff98d6f02b
StackTach
StackTach is a debugging / monitoring utility for OpenStack ([Open]StackTach[ometer]). StackTach can work with multiple datacenters including multi-cell deployments.
Watch the video here: http://www.youtube.com/watch?v=pZgwDHZ3wm0
Overview
OpenStack has the ability to publish notifications to a RabbitMQ exchange as they occur. So, rather than pouring through reams of logs across multiple servers, you can now watch requests travel through the system from a single location.
A detailed description of the notifications published by OpenStack is available here