Network configuration with post install script.

26 Apr 2005

      I'm trying to automate the network configuration on a post install script with
autoyast.
I cannot predict the number of ethernet card and the ones that will be used
before the installation.
So i wrote a script that ask the user all the network info, hostname, gateway
etc . . .
Actually the problem i have is when i want to use the ifcfg-eth-xxxxx file
generated by autoyast when i put this :

      <interfaces config:type="list">
        <interface>
          <bootproto>dhcp</bootproto>
          <device>eth0</device>
          <startmode>onboot</startmode>
        </interface>
        <interface>
          <bootproto>dhcp</bootproto>
          <device>eth1</device>
          <startmode>onboot</startmode>
        </interface>
        <interface>
          <bootproto>dhcp</bootproto>
          <device>eth2</device>
          <startmode>onboot</startmode>
        </interface>
        <interface>
          <bootproto>dhcp</bootproto>
          <device>eth3</device>
          <startmode>onboot</startmode>
        </interface>
        <interface>
          <bootproto>dhcp</bootproto>
          <device>eth4</device>
          <startmode>onboot</startmode>
        </interface>
      </interfaces>

the file generated by autoyast have not the same content that when i use yast
and give the same info.
With autoyast i don't have a _nm_name=..... field on the ifcfg file and so i
don't have the hwcfg-$_nm_name associated file created on
/etc/sysconfig/hardware

I could bypass that but it seems that i need this field to configure the bonding
that i want to use on all my servers.

By parsing the 'hwinfo --network' output i could generate by myself the
ifcfg-xxx files & hwcfg-xxxx associated files but i'm not sure it's the way i
should go.

I simply cannot predict the number of card and associated driver before the
install and so i cannot predict the final parameters before scanning the
hardware and asking the user witch card he wanna use. So i cannot put those
info on the autoyast xml file, that's why i doing that on a post instal script.

So my question is, how can i automate the network configuration for various
servers (i have i386 & ia64 arch) with autoyast & post install scripts ?

something like that :

card_list=`ls -A /sys/class/net | grep eth`
choice=`kdialog --title "Bonding interfaces" --inputbox "Activate Bonding on ?
(ethx ethy) :" "$card_list"`

and then i ask all the network config for the bonding and i wanna be able to
generate all the associated config
files.

i can find the info for generating the files with requests like :
# the simple name here
hwinfo --network | grep "Device File" | echo `awk '{print $3}'`
# the driver here
hwinfo --network | grep "Driver:" | awk '{print $2}' # The Driver
# the pci-bus-xxxx string there
hwinfo --network | grep "SysFS Device Link:" | awk '{print $4}' | grep -n
devices | echo `awk -F/ '{print "pci-bus-"$NF}'`
# the HW Adress
hwinfo --network | grep "HW" | echo `awk '{print $3}'`
# the unique id
hwinfo --network | grep "Unique" | echo `awk '{print $3}'`

if guess there are simple a way to do that, but i can't find it :)

Greetings.

Daniel

Network configuration with post install script.

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