Hello All,
I have one CentOS 6 KVM virtualization server that I built around a year ago (best I can tell it was in October 2012) at which time I would have been installing 6.3 [0]. That particular install used the Consistent Network Device Naming [1] conventions (PCIe NICs are p1p1, p1p2).
I started to build out a new KVM virt server (kickstarting a 6.4 install now as compared to 6.3 back then) and the interface names are back to the old ethX convention for the PCIe NICs. See below for my snippets from udev persistent rules on the two hosts.
I'm working off of [older] Dell PowerEdge 2950 hardware that has dual onboard Broadcom NICs and an additional Intel Dual GigE PCIe NIC.
** Did anyone but me notice this change/regression in network interface naming? ** Does anyone know if or why a change was made from what 6.3 or earlier apparently defaulted to?
This is by no means a major problem, but it did make me wonder what caused or why there was a change. [Of course I can change interface names in the udev rules if I chose to.]
Thanks for your feedback!
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Snippets:
# was 6.3 when initially installed, but has been updated to 6.4 since then ~]# cat /etc/*ele* CentOS release 6.4 (Final) CentOS release 6.4 (Final) CentOS release 6.4 (Final) cpe:/o:centos:linux:6:GA ~]# egrep -v '^$|^#' /etc/udev/rules.d/70-persistent-net.rules SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:19:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:19:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:15:17:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="p1p1" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:15:17:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="p1p2" ~]# lspci | grep Ether 05:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12) 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12) 0c:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06) 0c:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06)
# freshly installed 6.4 ~]# cat /etc/*ele* CentOS release 6.4 (Final) CentOS release 6.4 (Final) CentOS release 6.4 (Final) cpe:/o:centos:linux:6:GA ~]# egrep -v '^$|^#' /etc/udev/rules.d/70-persistent-net.rules SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:19:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:15:17:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:19:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:15:17:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3" ~]# lspci | grep Ether 03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12) 07:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12) 08:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06) 08:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06)
[0] https://access.redhat.com/site/articles/3078 [1] https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/...