I am trying to add three more IP addresses to my machine. I have 7.1 installed with one IP already but want to add a few more.

Could anyone tell me how to IP Alias? I have tried a search on Google but the results are not what I want. Is there an easy way to do this?

Could someone give me a step by step? Thanks.

J

This is quite simple.

cd /etc/sysconfig/network-scripts/
cp ifcfg-eth0 ifcfg-eth0:1

edit the ifcfg-eth0:1 and replace the IP with the new IP

DEVICE=eth0
IPADDR=xxx.xxx.xxx.xxx <- New IP Here.
NETWORK=xxx.xxx.xxx.xxx
NETMASK=255.255.255.xxx
BROADCAST=xxx.xxx.xxx.xxx
ONBOOT=yes

The above file will add the IP when you reboot the server.

now run this command to add the IP Manually.

/sbin/ifconfig eth0:1 xxx.xxx.xxx.xxx <- new IP here


Thats it!

Aliasing support has to be compiled into the kernel also. May already be enabled with a stock RH kernel.

This is not an issue with modern kernels.

Would a reboot make the kernel automatically detect the new IPs and setup the system for me?

Ughh?

Yes, but you can probably do

ifup eth0:1

Originally posted by remarkable
This is not an issue with modern kernels.

Damn.... I thought I was going to make it the whole day without learning something new... ;)