Virtual IP address on RedHat 6

Question

I have server (A) running with a static IP address (xx.xxx.xxx.xxx) in my company. I need to assign virtual IP address to this Server (A). My production team expects script file where they can execute to up / down VIP (Virtual IP). I tried googling but end with Create Virtual IP, I don't have access. Looking for expert advice on, how to create and assign Virtual IP address to existing server?

Note : Currently we have one prod server and one DR server. We may be scaling it up in future.

Environment : Redhat 6

Solution

you are looking for an alias.

assuming your IP on eth0 is 192.168.230.128, you can have an alias either by

• setting ifcfg-eth0:1 (/etc/sysconfig/network-script)

  DEVICE="eth0:1"
  BOOTPROTO="static"
  IPADDR=192.168.230.253
  NETWORK=192.168.230.0
  NETMASK=255.255.255.0
  IPV6INIT="yes"
  NM_CONTROLLED="yes"
  ONBOOT="yes"
  

• or at run time

  ifconfig eth0:1 192.168.230.253/24 up
  

former method will work from boot, latter at run time only (and will be lost on reboot).

Comments

[Atul Vekariya]

Did you use google? google.de/…