We're running a tashi cluster as the backend for an autograding service at CMU called Autolab. Each time a student hands in their work, the service creates a fresh VM instance, autogrades the students work in this instance, and then destroys it. Now and then, typically in periods of higher load when we have to create multiple instances at the same time, we'll get an instance that can't be reached (see below).
Any ideas what might be causing this? Thanks! Dave linux> tashi-client.py getinstances id hostId name user state disk memory cores ---------------------------------------------------------- 178 6 tango6-rhel gdm Running rhel.img 512 1 linux> ping tango6-rhel.vmnet PING tango6-rhel.vmnet (192.168.1.216) 56(84) bytes of data. >From 192.168.1.1 icmp_seq=1 Destination Host Unreachable >From 192.168.1.1 icmp_seq=2 Destination Host Unreachable -- David O'Hallaron -- Prof of CS and ECE, Carnegie Mellon University -- contact: http://www.cs.cmu.edu/~droh
