Re: [xcat-user] Is there an ifcfg-eth postscript that works on systemd OSes?

[Christian Caruthers]

Will probably want to include "eno" in your grep statement. Not all Etherned 
devices come up as "ens".  Not sure if there are any other varations.

Regards,
Christian Caruthers
Lenovo xESS IT Consultant
Mobile: 757-289-9872


From: Josh Nielsen [mailto:jniel...@hudsonalpha.org]
Sent: Wednesday, August 03, 2016 5:01 PM
To: xCAT Users Mailing list; Rich Sudlow
Subject: Re: [xcat-user] Is there an ifcfg-eth postscript that works on systemd 
OSes?

Thanks! Yes, I knew ifconfig was deprecated, hence why I knew this was a hack 
and was asking. Is that postscript something you wrote yourself?

Thanks,
Josh

On Wed, Aug 3, 2016 at 3:49 PM, Rich Sudlow > 
wrote:
On 08/03/2016 03:54 PM, Josh Nielsen wrote:
Hello,

I am now testing the deployment of Centos 7 in my environment and I've noticed
that the ifcfg-eth postscript is not geared to work with it. For starters Centos
7 doesn't install ifconfig by default, though I've solved that with my
kickstart, but more to the point the postscript explicitly looks for "Ethernet"
in the ifconfig line to grab the interface name which doesn't work on systemd
OSes like Centos 7. And of course there's the change from "eth" interface names
to "ens" and a variety of other names.

I changed the line that looked like this in the postscript:

interfaces=$(ifconfig -a | grep "Ethernet" | awk '{print $1}')

To this:

interfaces=$(ifconfig -a | egrep "Ethernet|ens" | awk '{print $1}')

And while that does parse out the ens interface names now they come with a colon
tacked on to the end of them in the ifconfig output like this:
ens160:
ens192:

I can parse that out with a regex substitution to remove the colon, but before I
hack the default script up too much has there been an alternative ifcfg-eth
postscript released for systems like this? I'm using this script to change the
/etc/sysconfig/network-scripts/ifcfg-* files from using DHCP to the static
addresses defined through xCAT, which works fine on my Centos 6 OSes.

This is my xCAT version:
lsxcatd -v
Version 2.11 (git commit 9ea36ca6163392bf9ab684830217f017193815be, built Mon Nov
30 05:43:11 EST 2015)

Thanks,
Josh Nielsen

I believe all the latest xcat routines use ip addr 

as you might know the use if ifconfig is deprecated...

here's a snippet from a postscript which uses ksh


if [[ $OSVER = *rhels7* ]]; then
# This just hardcodes the entries which are already set
# Change to grep only on "inet " rather than "inet addr" so that rhels7 works - 
RKS - 8/21/2014
for nic in `ifconfig -a|grep -B1 "inet "|awk '{print $1}'|grep -v inet|grep -v 
-- --|grep -v lo|sed s/:$//`; do
echo "Setting up hardeths on rhels7" >> /root/post.log
   echo NIC $nic
   echo NIC $nic >> /root/post.log
   IPADDR=`ifconfig $nic |grep "inet "|awk '{print $2}' |awk -F: '{print $1}'`
   echo "IPADDR: $IPADDR" >> /root/post.log
   NETMASK=`ifconfig $nic |grep "inet "|awk '{print $4}' |awk -F: '{print $1}'`
   echo "NETMASK: $NETMASK" >> /root/post.log
   sed -i s/BOOTPROTO=dhcp/BOOTPROTO=none/ 
/etc/sysconfig/network-scripts/ifcfg-$nic
   sed -i s/ONBOOT=no/ONBOOT=yes/ /etc/sysconfig/network-scripts/ifcfg-$nic
   echo IPADDR=$IPADDR >> /etc/sysconfig/network-scripts/ifcfg-$nic
   echo NETMASK=$NETMASK >> /etc/sysconfig/network-scripts/ifcfg-$nic
   # Remove firewalld since we're using iptables - RKS 9/30/14
   yum remove -y firewalld | logger -t xcat
   echo "Done with hardeths on rhels7" >> /root/post.log
done

Hope this help you out.






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Rich Sudlow
University of Notre Dame
Center for Research Computing - Union Station
506 W. South St
South Bend, In 46601

(574) 631-7258 (office)
(574) 807-1046 (cell)

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Re: [xcat-user] Is there an ifcfg-eth postscript that works on systemd OSes?

[Josh Nielsen]

Thanks! Yes, I knew ifconfig was deprecated, hence why I knew this was a
hack and was asking. Is that postscript something you wrote yourself?

Thanks,
Josh

On Wed, Aug 3, 2016 at 3:49 PM, Rich Sudlow  wrote:

> On 08/03/2016 03:54 PM, Josh Nielsen wrote:
>
>> Hello,
>>
>> I am now testing the deployment of Centos 7 in my environment and I've
>> noticed
>> that the ifcfg-eth postscript is not geared to work with it. For starters
>> Centos
>> 7 doesn't install ifconfig by default, though I've solved that with my
>> kickstart, but more to the point the postscript explicitly looks for
>> "Ethernet"
>> in the ifconfig line to grab the interface name which doesn't work on
>> systemd
>> OSes like Centos 7. And of course there's the change from "eth" interface
>> names
>> to "ens" and a variety of other names.
>>
>> I changed the line that looked like this in the postscript:
>>
>> interfaces=$(ifconfig -a | grep "Ethernet" | awk '{print $1}')
>>
>> To this:
>>
>> interfaces=$(ifconfig -a | egrep "Ethernet|ens" | awk '{print $1}')
>>
>> And while that does parse out the ens interface names now they come with
>> a colon
>> tacked on to the end of them in the ifconfig output like this:
>> ens160:
>> ens192:
>>
>> I can parse that out with a regex substitution to remove the colon, but
>> before I
>> hack the default script up too much has there been an alternative
>> ifcfg-eth
>> postscript released for systems like this? I'm using this script to
>> change the
>> /etc/sysconfig/network-scripts/ifcfg-* files from using DHCP to the static
>> addresses defined through xCAT, which works fine on my Centos 6 OSes.
>>
>> This is my xCAT version:
>> lsxcatd -v
>> Version 2.11 (git commit 9ea36ca6163392bf9ab684830217f017193815be, built
>> Mon Nov
>> 30 05:43:11 EST 2015)
>>
>> Thanks,
>> Josh Nielsen
>>
>
> I believe all the latest xcat routines use ip addr 
>
> as you might know the use if ifconfig is deprecated...
>
> here's a snippet from a postscript which uses ksh
>
>
> if [[ $OSVER = *rhels7* ]]; then
> # This just hardcodes the entries which are already set
> # Change to grep only on "inet " rather than "inet addr" so that rhels7
> works - RKS - 8/21/2014
> for nic in `ifconfig -a|grep -B1 "inet "|awk '{print $1}'|grep -v
> inet|grep -v -- --|grep -v lo|sed s/:$//`; do
> echo "Setting up hardeths on rhels7" >> /root/post.log
>echo NIC $nic
>echo NIC $nic >> /root/post.log
>IPADDR=`ifconfig $nic |grep "inet "|awk '{print $2}' |awk -F: '{print
> $1}'`
>echo "IPADDR: $IPADDR" >> /root/post.log
>NETMASK=`ifconfig $nic |grep "inet "|awk '{print $4}' |awk -F: '{print
> $1}'`
>echo "NETMASK: $NETMASK" >> /root/post.log
>sed -i s/BOOTPROTO=dhcp/BOOTPROTO=none/
> /etc/sysconfig/network-scripts/ifcfg-$nic
>sed -i s/ONBOOT=no/ONBOOT=yes/ /etc/sysconfig/network-scripts/ifcfg-$nic
>echo IPADDR=$IPADDR >> /etc/sysconfig/network-scripts/ifcfg-$nic
>echo NETMASK=$NETMASK >> /etc/sysconfig/network-scripts/ifcfg-$nic
># Remove firewalld since we're using iptables - RKS 9/30/14
>yum remove -y firewalld | logger -t xcat
>echo "Done with hardeths on rhels7" >> /root/post.log
> done
>
> Hope this help you out.
>
>
>
>
>>
>>
>>
>>
>> --
>>
>>
>>
>> ___
>> xCAT-user mailing list
>> xCAT-user@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/xcat-user
>>
>>
>
> --
> Rich Sudlow
> University of Notre Dame
> Center for Research Computing - Union Station
> 506 W. South St
> South Bend, In 46601
>
> (574) 631-7258 (office)
> (574) 807-1046 (cell)
>
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[xcat-user] Is there an ifcfg-eth postscript that works on systemd OSes?

[Josh Nielsen]

Hello,

I am now testing the deployment of Centos 7 in my environment and I've
noticed that the ifcfg-eth postscript is not geared to work with it. For
starters Centos 7 doesn't install ifconfig by default, though I've solved
that with my kickstart, but more to the point the postscript explicitly
looks for "Ethernet" in the ifconfig line to grab the interface name which
doesn't work on systemd OSes like Centos 7. And of course there's the
change from "eth" interface names to "ens" and a variety of other names.

I changed the line that looked like this in the postscript:

interfaces=$(ifconfig -a | grep "Ethernet" | awk '{print $1}')

To this:

interfaces=$(ifconfig -a | egrep "Ethernet|ens" | awk '{print $1}')

And while that does parse out the ens interface names now they come with a
colon tacked on to the end of them in the ifconfig output like this:
ens160:
ens192:

I can parse that out with a regex substitution to remove the colon, but
before I hack the default script up too much has there been an alternative
ifcfg-eth postscript released for systems like this? I'm using this script
to change the /etc/sysconfig/network-scripts/ifcfg-* files from using DHCP
to the static addresses defined through xCAT, which works fine on my Centos
6 OSes.

This is my xCAT version:
lsxcatd -v
Version 2.11 (git commit 9ea36ca6163392bf9ab684830217f017193815be, built
Mon Nov 30 05:43:11 EST 2015)

Thanks,
Josh Nielsen
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