[Users] [3.3] Rebooted node losing its network setup

[Sven Kieske]

Hi,

this sounds to me as if you are running into the
dns-rewrites-whole-network-config-bug fixed here:

http://gerrit.ovirt.org/#/c/19705/

maybe (I'm not sure if this got merged in 3.3.0.1 node)?

My advise would be to use as node CentOS minimal with ovirt repo, as
3.3.0.1 node seems not to be _that_ stable. Or wait for node 3.3.0.2
which should be out soon ("TM" ;) )

The CentOS setup for the node works really fine for us, so you might
give it a try.

HTH

Sven

On 10.10.2013 11:50, Nicolas Ecarnot wrote:
> Hello,
> 
> After a successful 3.1 setup, I'm starting a completely new 3.3
> environment.
> 
> I installed a CentOS 6.4 for the manager with a 3.3 oVirt engine.
> For the nodes, on Dell M620 blades, I installed
> ovirt-node-iso-3.0.1-1.0.2.vdsm.el6.iso.
> 
> I setup a blade like this :
> - first two interfaces bonded + bridge dedicated to ovirt managment network
> - 4 next interfaces bonded + bridge dedicated to the iSCSI pure copper lan
> 
> (I've setup this exaclty same env. on my previous oVirt 3.1 setup and it
> is working fine)
> 
> Once I've configured that correctly on 3 nodes, I reboot (or stonith)
> the first node, to prove this is stable.
> I get various effects :
> - sometimes the bonding dedicated to the iscsi lan is lost (no more
> /etc/sysconfig/network-scripts/ifcfg-bond1 neither ifcfg-ovirtiscsi files)
> - sometimes the bonding dedicated to the ovirtmgmt part is lost or
> changed : the bonding mode I have set to 1 (active-backup) is replaced
> by mode 0 (balance-rr) (which leads to other local network issues)
> - during reboot, I see "bnx2fs" issues : before them, pings to this node
> are OK (mode 1), after them, ping to this node get DUPs (mode 0)
> 
> This is very tiresome to see that such a simple thing as bonding and
> bridging are things I keep losing time on.
> Using command line on the node, I'm able to correct everything, but
> nothing is reboot-proof though I don't know what is causing those changes.
> 
> I'm sure I tried nothing exotic when first installing the node. I just
> used the TUI and made a very simple bonding with no VLAN.
> Even when trying to concentrate only on the ovirtmgmt bond oVirt can't
> seem to be stable.
> 
> What should I look now?
>