[ale] Update ifcfg-eth0 file from command line? (need to re-ip 50 servers)

[leamhall at gmail.com (Leam Hall)]

Untested, and I tend to do things in multiple steps.

cp /etc/sysconfig/network-scripts/ifcfg-eth0 /tmp

cat /tmp/ifcfg-eth0 | egrep -iv "ipaddr|broadcast|gateway" > 
/etc/sysconfig/network-scripts/ifcfg-eth0

echo "IPADDR=1.2.3.4" >> /etc/sysconfig/network-scripts/ifcfg-eth0
echo "BROADCAST=1.2.3.0" >> /etc/sysconfig/network-scripts/ifcfg-eth0
echo "GATEWAY=1.2.3.1" >> /etc/sysconfig/network-scripts/ifcfg-eth0

service network restart

Main thing is to not put the backup copy in the network-scripts 
directory, RHEL will try to bring up an interface like ifcfg-eth0.sav.

Hope that helps.

Leam


On 03/18/17 20:21, Raj Wurttemberg wrote:
> Is it possible to edit the ifcfg-eth0 file (RHEL6) from the command
> line?   On my Windows servers I can use the  netsh command to make the
> change (I wrote a VMware PowerCLI script to update Windows already).  If
> I have to use sed or whatever, that?s fine? I was just curious if there
> were an easier way.
>
>
>
> One of our hosted customers wants us to re-IP all of their servers and I
> definitely don?t want to log into each server to make the change. :p
>
>
>
> (Side note? I do have Salt running in the environment also.)  Ugh? that
> reminds me?. Salt doesn?t like it when servers get re-IPd?.
>
>
>
> Thanks,
>
> /Raj
>
>
>
>
>
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