when i try to restart network service, ending up with following errors. There are two interfaces eth0 and eth1
below are ifcfg-eth0 and eth1 files under /etc/sysconfig/network-scripts/ directory
There is another similar server, and ifcfg-eth0 and ifcfg-eth1 are similar(ofcourse different IP etc).
The other server is working fine.
difference is
and WORKING server is able to resolve IP but NON-WORKING server is not able resolve IP and ending up with an error when it try to use nslookup command to resolve some other server
Please help to solve this issue.
Thanks in advance!
It's saying "file exists" because the interface is already defined at the time the script tries to define it again. I'm pretty sure (not certain) this is because you're mixing old-style ifcfg files with NetworkManager. Since these are two different ways of accomplishing the same end, you're going to have to pick one or the other. It sounds like you're using ifcfg on the other server as well.
Personally, I prefer ifcfg, so I would stop and chkconfig off the NetworkManager service, change NM_CONTROLLED to be no in each ifcfg and reboot the system (sometimes you can get away with just restarting the network service but if it's already off the network you might as well use this as a chance to clear out anything NM has done in the background before people start depending on this server again).
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