First Aid kit for Mules

The alarms go off. You get an alert on your cellphone. You look at your systems dashboard and notice that your Mule server, which was happily chewing messages until just a minute ago, is struggling. What can you do?
The alarms go off. You get an alert on your cellphone. You look at your systems dashboard and notice that your Mule server, which was happily chewing messages until just a minute ago, is struggling. What can you do?