Sunday 1 July 2018

Cloned Oracle Linux (OEL) is missing eth0

Issue:-In my case i faced problem with oracle linux 6.5 cloned server is 
            that it would not have the eth0 network interface
            (no IP address from the DHCP).

Note:-I use a DHCP to assign the IP addresses to these cloned servers.

Troubleshooting:-

I had a problem with the eth0 network interface missing with the cloned server.
ifconfig – When I ran the ifconfig command, I did not see the DHCP assigned IP address.
When we ran the command ip link show, I did not see the network interface eth0.
I tried running network restart command i received below error
Bringing up interface eth0:  Device eth0 does not seem to be present, delaying initialization.

Solution:-

1.) Login as root
2.) Run the command to remove this file: 
      rm –f /etc/udev/rules.d/70-persistent-net.rules
3.) Edit the file ifcfg-eth0
      run following command: vim /etc/sysconfig/network-scripts/ifcfg-eth0
4.) Remove two line from this file. The line that starts with UUID, and the line
      that starts with HWADDR.

5.) Once above two lines are removed them save and quit (wq!)
6.) Run following below command
      ip link set eth1 name eth0
7.) Run following command ip link show to verify that it was renamed
8.)Reboot your machine and Login as root
9.)Run following command and verify:-ifconfig




Thanks,
Aditya.

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