Here is my script for post install if you want to try it.
In order for the shuffling to not occur you do need to create the udev
rules file somehow. I am not sure how mangled this will be in email but
it is worth a try. It should run OK with nothing else. I have a better
version in the works but the enhancements are mainly useful for Fedora
19-21.
I did forget to say I also block NetworkManager from the interfaces.
############################
#!/bin/bash
## BIND MAC address to proper interfaces so they stay persistent
## I want them to stay as they were in kickstart
## This can cause issues with VLAN interfaces for both bond dev's and base
eth dev's.
## The bond one was solved by adding in the "KERNEL="eth?*" as that will
only apply to physical
## Devices. Once we have VLAN's on a real device instead of just on
BOND's this then applies
## to the hardware devices as well. The core issue is that the MAC
address is inherited
## by all of the children devices and thus the UDEV rule has to be
crafted to only apply
## to the base physical device.
## This one was solved via adding DRIVERS=="?*" as the VLAN int's wont
have one
echo "[KICKSTART] Binding eth interfaces to the expected MAC address
in UDEV"
echo "## Created by Kickstart to keep network interfaces in an
expected order" > \
/etc/udev/rules.d/70-persistent-net.rules
echo "" >> \
/etc/udev/rules.d/70-persistent-net.rules
cd /sys/class/net/
for NETDEV in $(ls | grep eth | sort)
do
## Create a UDEV rule for each eth interface
echo "## ${NETDEV} interface" >> \
/etc/udev/rules.d/70-persistent-net.rules
## We throw this one in here as it can contain some useful
information
echo "## $(dmesg | grep ${NETDEV} | grep -i -v -e "console" -e
"Command line" | head -1)" >> \
/etc/udev/rules.d/70-persistent-net.rules
echo -n "SUBSYSTEM==\"net\", ACTION==\"add\", DRIVERS==\"?*\", "
\
/etc/udev/rules.d/70-persistent-net.rules
echo -n "ATTR{address}==\"$(cat ${NETDEV}/address)\", " >> \
/etc/udev/rules.d/70-persistent-net.rules
echo -n "ATTR{dev_id}==\"0x0\", ATTR{type}==\"1\",
KERNEL==\"eth?*\", " >> \
/etc/udev/rules.d/70-persistent-net.rules
echo -e "NAME=\"${NETDEV}\"\n" >> \
/etc/udev/rules.d/70-persistent-net.rules
## Make a log of the devices present during install
echo -e "${NETDEV} $(cat ${NETDEV}/address)\n" >>
/root/ksnet-devices
## Also remove the HWADDR line from all of the net config files
grep -v -e NAME -e HWADDR -e NM_CONTROLLED \
/etc/sysconfig/network-scripts/ifcfg-${NETDEV} | sed 's/\"//g'
\
> /etc/sysconfig/network-scripts/ifcfg-${NETDEV}-tmp
echo "NM_CONTROLLED=no" >>
/etc/sysconfig/network-scripts/ifcfg-${NETDEV}-tmp
/usr/bin/perl -p -i -e 's/dhcp/none/'
/etc/sysconfig/network-scripts/ifcfg-${NETDEV}-tmp
mv -f /etc/sysconfig/network-scripts/ifcfg-${NETDEV}-tmp \
/etc/sysconfig/network-scripts/ifcfg-${NETDEV}
done
###########################
On Wed, 25 Feb 2015 14:53:40 -0600, Ashley M. Kirchner <ashley@xxxxxxxxxx>
wrote:
Thanks for that Jason but it didn't solve the problem. The system is
still
coming up with the interfaces shuffled. It seems to *always* want to use
the added ethernet card as eth0.
On Wed, Feb 25, 2015 at 1:37 PM, Jason Warr <jason@xxxxxxxx> wrote:
Starting back in RHEL/Cent 5 I found that the only way to make sure your
interface enumeration was consistent after install with what you had
during
install was to create a udev rules file using the mac addresses as the
key. It is easy to run a short script in postinstall to create it
based on
how anaconda has seen them.
In order for this to work on Cent 6 you have to set biosdevname=0 on the
kernel boot for the installed system.
PXE boot options:
label c6inst-sda
kernel /linux-boot/cent6-x64/vmlinuz
append initrd=/linux-boot/cent6-x64/initrd.img ksdevice=bootif
ip=dhcp ks=http://xx.xx.xx.xx/install/linux/ks/basic-cent6-sda.cfg
ipappend 2
In kickstart:
BOOTOPTS="biosdevname=0"
Also in kickstart I do not specify the config for ANY network
interfaces.
I let anaconda pull in only the config for the boot interface from
PXE. I
manually configure everything else. The only thing I do to non-boot
interfaces is set the DHCP and ONBOOT to no.
On Wed, 25 Feb 2015 14:21:18 -0600, Ashley M. Kirchner
<ashley@xxxxxxxxxx>
wrote:
Version 6.6 ...
On Wed, Feb 25, 2015 at 1:17 PM, Jim Perrin <jperrin@xxxxxxxxxx> wrote:
<overly trimmed>
On 02/25/2015 01:56 PM, Ashley M. Kirchner wrote:
> Ok, so some of this now works, but I'm still having problems. With
the
> bootif option, the system now correctly configures and uses the same
> interface to get its kickstart file. However, when the system is
done
and
> boots up, the interfaces are still messed up. So this is what I
have in
the
> kickstart file:
What version of CentOS 6 is this?
> In the PXE config file I have:
>
> IPAPPEND 2
> APPEND ks=http://192.168.x.x/ks/portico.ks
initrd=centos/x86_64/initrd.img
> ramdisk_size=100000 ksdevice=bootif
> As soon as I *remove* the additional ethernet card, the system will
boot
up
> with the ports configured correctly (port 1 = eth0, port 2 = eth1).
So
why
> is it that as soon as there is an additional one, all things go to
hell?
> Why must the boot process shuffle them? More importantly, how do I
prevent
> this so that the system comes up properly after a kickstart install?
>
The reason I ask the version, is this is exactly the sort of thing
that
biosdevname is designed to solve. With biosdevname, you get devices
like
'em1, em2, p6p1', which aren't as friendly as 'eth0' but also keep
names
sane and avoid the hair-tearing issues you're experiencing currently.
You don't appear to be adding anything via your append line that would
disable biosdevname, so I must assume you're using a much older 6 base
install.
In my experience biosdevname creates just as many problems as it solves.
Dell can keep it.
--
Jim Perrin
The CentOS Project | http://www.centos.org
twitter: @BitIntegrity | GPG Key: FA09AD77
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