instances lose public IP

[Russell de Moose]

Eucalyptus 2.0. Natty 11.04, Lucid 10.04 image for instances

I have a small UEC setup (1 Front-End, 2 NC), and at various points, instances running on each of the node controllers will lose their public IP addresses. I can re-associate available IP addresses from my pool (Managed NO-VLAN) with the instances, but this is a repeated issue. FYI -

RESERVATION r-4B5E08CB admin default
INSTANCE i-357C06B6 emi-0A1B1168 172.19.1.2 172.19.1.2 running 0 c1.medium 2011-07-29T16:16:36.856Z webness eki-92AE1B4D

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: eucalyptus-common 2.0.1+bzr1256-0ubuntu4.1
ProcVersionSignature: Ubuntu 2.6.38-10.46-server 2.6.38.7
Uname: Linux 2.6.38-10-server x86_64
.etc.eucalyptus.eucalyptus.cc.conf: CC_NAME="webness"
Architecture: amd64
Date: Thu Aug 4 11:16:19 2011
InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110422)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: eucalyptus
UpgradeStatus: No upgrade log present (probably fresh install)

[Leonardo Borda (lborda)]

Looking at the cc.log file we see that instance i-357C06B6 and i-45DC0806 have received a termination request however nobody was working on the servers at that time.

What component would trigger such a request?

20431 [Thu Aug 4 07:51:44 2011][006981][EUCAINFO ] TerminateInstances(): called
20432 [Thu Aug 4 07:51:44 2011][006981][EUCADEBUG ] TerminateInstances(): params: userId=(null), instIdsLen=1, firstInstId=i-357C06B6
20433 [Thu Aug 4 07:51:44 2011][006981][EUCADEBUG ] TerminateInstances(): done.
20434 [Thu Aug 4 07:51:44 2011][006918][EUCADEBUG ] init_thread(): init=1 053FB000 A33DB000 A9459000 05332000
20435 [Thu Aug 4 07:51:44 2011][006918][EUCAWARN ] vnetInitTunnels(): in MANAGED-NOVLAN mode, priv interface 'eth0' must be a bridge, tunneling disabled
20436 [Thu Aug 4 07:51:44 2011][006918][EUCAINFO ] TerminateInstances(): called
20437 [Thu Aug 4 07:51:44 2011][006918][EUCADEBUG ] TerminateInstances(): params: userId=(null), instIdsLen=1, firstInstId=i-45DC0806
20438 [Thu Aug 4 07:51:44 2011][006918][EUCADEBUG ] TerminateInstances(): done.
20439 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] init_thread(): init=1 053FB000 9D35D000 A33DB000 05332000
20440 [Thu Aug 4 07:51:45 2011][006920][EUCAWARN ] vnetInitTunnels(): in MANAGED-NOVLAN mode, priv interface 'eth0' must be a bridge, tunneling disabled
20441 [Thu Aug 4 07:51:45 2011][006920][EUCAINFO ] UnassignAddress(): called
20442 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] UnassignAddress(): params: userId=(null), src=10.90.1.11, dst=172.19.1.2
20443 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] vnetApplySingleTableRule(): applying single table (nat) rule (-D PREROUTING -d 10.90.1.11 -j DNAT --to-destination 172.19.1.2)
20444 [Thu Aug 4 07:51:45 2011][006946][EUCADEBUG ] init_thread(): init=1 053FB000 A33DB000 A9459000 05332000
20445 [Thu Aug 4 07:51:45 2011][006946][EUCAWARN ] vnetInitTunnels(): in MANAGED-NOVLAN mode, priv interface 'eth0' must be a bridge, tunneling disabled
20446 [Thu Aug 4 07:51:45 2011][006946][EUCAINFO ] UnassignAddress(): called
20447 [Thu Aug 4 07:51:45 2011][006946][EUCADEBUG ] UnassignAddress(): params: userId=(null), src=10.90.1.10, dst=172.19.1.3
20448 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] vnetApplySingleTableRule(): applying single table (nat) rule (-D OUTPUT -d 10.90.1.11 -j DNAT --to-destination 172.19.1.2)
20449 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] vnetApplySingleTableRule(): applying single table (nat) rule (-D POSTROUTING -s 172.19.1.2 -j SNAT --to-source 10.90.1.11)
20450 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] UnassignAddress(): running cmd '///usr/lib/eucalyptus/euca_rootwrap ip addr del 10.90.1.11/32 dev eth0'
20451 [Thu Aug 4 07:51:45 2011][006946][EUCADEBUG ] vnetApplySingleTableRule(): applying single table (nat) rule (-D PREROUTING -d 10.90.1.10 -j DNAT --to-destination 172.19.1.3)
20452 [Thu Aug 4 07:51:45 2011][006920][EUCADEBUG ] UnassignAddress(): done