[Ovirt-devel] [PATCH node] The node now passes in the mac address and iface names during identify.

Perry N. Myers pmyers at redhat.com
Sun Sep 21 05:30:07 UTC 2008

Darryl L. Pierce wrote:
> This works with the patch for the server the generates a configuration file
> for the node based on the interface names passed in with each mac address.
> Additionally, the node will pull down the configuration and process it as a
> script. Since the configuration will be composed of two separate parts:
> 1. a script to load one or more kernel modules
> 2. a configuration file to pass to augtool
> The script is downloaded to a temp directory and then passed to bash. If
> either of the two expected files is produced then it is further processed to
> configure the node.


This breaks networking on the nodes currently.

A node boots for the first time, brings up eth0, contacts the server and 
goes to get its config bundle using its hostname, mac and iface name. 
Since the node has never been configured in the server before the config 
bundle it pulls down is empty meaning ovirtbr0 is never set up.  eth0 
stays up so normal network connectivity works but since the bridge is 
never configured you can't start vm's on the node.

What needs to happen is a 'default' configuration needs to be applied in 
the event that the Node has not been explicitly configured or in the event 
that there is no server to contact.  In the configure_from_network 
function we could detect the 'empty' config file and exit out of the loop 
to apply the default configuration at the end of that function.

The controller on the server side should put something in the output when 
the wget it run so that the ovirt-early script can easily determine that 
there was no configuration on the server and the Node should drop to the 
'default config' of one bridge per interface.

Once this is fixed we can retest these two patches.


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