OpenContrail

Trouble recovering compute node from reboot

Bug #1326558 reported by Abhishek Chanda on 2014-06-04

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	OpenContrail	New	Undecided	Unassigned

Bug Description

We have Contrail + Grizzly. When a control node was shut down and a VM was launched, the vrouter went yellow on the webui. The message says that the tap interfaces are down, while on the node those are up.

<email address hidden>:/home/cloudscaling$ ifconfig tape6d204ed-a3
tape6d204ed-a3 Link encap:Ethernet HWaddr 12:23:63:f7:23:6b
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:265 errors:0 dropped:0 overruns:0 frame:0
          TX packets:259 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:83878 (83.8 KB) TX bytes:81585 (81.5 KB)

<email address hidden>:/home/cloudscaling$ ifconfig tapb966caff-4d
tapb966caff-4d Link encap:Ethernet HWaddr 82:17:dd:3e:e4:80
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:321 errors:0 dropped:0 overruns:0 frame:0
          TX packets:315 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:101910 (101.9 KB) TX bytes:99225 (99.2 KB)

As a result, VM networking is broken. Note that the compute node was not rebooted.