[Xen-users] /etc/sysconfig/network-scripts, are they executed in xen startup

[Steven Timm <timm@xxxxxxxx>]

I have a few Xen domu's that run multiple ip's on the same bridge.


For example

root@fg4x2 network-scripts]# cat ifcfg-eth0
# Intel Corporation 82541GI Gigabit Ethernet Controller
DEVICE=eth0
BOOTPROTO=static
BROADCAST=131.225.107.255
HWADDR=00:16:3E:05:04:02
IPADDR=131.225.107.112
NETMASK=255.255.255.0
NETWORK=131.225.107.0
ONBOOT=yes


root@fg4x2 network-scripts]# cat ifcfg-eth0:160
DEVICE=eth0:160
BOOTPROTO=static
BROADCAST=131.225.107.255
IPADDR=131.225.107.160
NETMASK=255.255.255.0
NETWORK=131.225.107.0
ONBOOT=yes
TYPE=Ethernet


On this particular domU, the 131.225.107.160 ip is not
activated at boot, even though onboot=yes.
(This domU is based on Sci. Linux 5.1 which is like redhat and centos).

On another different domU, I have a case where an
extra ip is activated at boot, even though I specify onboot=no.
That domU is based on Sci. Linux 4.x which is like redhat and centos).


My questions:
1) What is it in the startup of a domU xen OS that determines which
parts of /etc/sysconfig/network-scripts are executed and which are not?
Obviously the machine has some ip from the beginning well before
you get to the /etc/rc.d/rc3.d scriptgs.


2) What is it within the xen startup which causes the files
ifcfg-eth0 and ifcfg-eth1 to be renamed to ifcfg-eth0.bak and
ifcfg-eth1.bak sometimes?

Any help is appreciated.

Thanks

Steve Timm

--
------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.

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