Want to add an IP address just for a little while? You can add one using the ip command. $ ifup ens160:0ĭon’t use this if Network Manager is in control. $ cat ifcfg-ens160:0īring up your alias interace and you’re good to go. If Network Manager isn’t used, you can use the old style aliases you’re used to from CentOS 5/6. $ grep 'NM_CONTROLLED' /etc/sysconfig/network-scripts/ifcfg-ens160 Only use this if your interface is not controlled by Network Manager.
If you want, you can modify the text file, but I find using nmtui to be much easier. $ cat /etc/sysconfig/network-scripts/ifcfg-ens192 If you check the text-configs that have been created in /etc/sysconfig/network-scripts/, you can see how nmtui has added the alias. Save the configs and the extra IP will be added. Once nmtui is open, go to the Edit a network connection and select the interface you want to add an alias on.Ĭlick Edit and tab your way through to Add to add extra IP addresses. The simplest/cleanest way to add a new IP address to an existing interface in CentOS 7 is to use the nmtui tool ( Text User Interface for controlling NetworkManager). That’s the Network Manager misinterpreting your configuration files, overwriting the values from your main interface with the one from your alias. Here’s what a config would look like in CentOS 6: $ cat ifcfg-ens160:0Īfter a network reload, the primary IP address will be removed from the server and only the IP address from the alias interface will be present. You may be used to adding a new network-scripts file in /etc/sysconfig/network-scripts/, but you’ll find that doesn’t work in RHEL / CentOS 7 as you’d expect if the Network Manager is being used. If that’s a yes, you can proceed with the next configurations using the Network Manager tool. Using Network ManagerĬheck if your interface you want to add an alias to, uses the Network Manager. This syntax is more inline with most routers/switches, where you can grep for inet and inet6 for your IPv4 and IPv6 IP addresses. To see all IP addresses, use the ip tool. It would show you all interfaces and their IP aliases on the server. The “old” days of Linux used to be all about ifconfig. If it’s not under Network Manager control, you can happily modify your configs by hand. If that’s the case, you’ll want to keep using the Network Manager to manage your interfaces and aliases. There are a few different methods than on CentOS 6, so there may be some confusion if you’re trying this on a CentOS 7 system for the first time.įirst, determine if your network interfaces are under the control of the Network Manager.
#CENTOS CHANGE NETWORK ADAPTER MAC ADDRESS HOW TO#
There you have it, the network card is now working.This guide will show you how to add an extra IP address to an existing interface in Red Hat Enterprise Linux / CentOS 7. Once rebooted, run ifconfig to check to see if the network card has been detected. Once complete, reboot the virtual machine.# PCI device 0x15ad:0x07b0 (vmxnet3) (custom name provided by external tool) Then change the name from “eth1” to “eth0”. Delete all the PCI devices which don’t reference the MAC address of the virtual network card.Change the Mac address to the virtual network adapter’s.
Nano /etc/sysconfig/network-scripts/ifcfg-eth0 Edit the network file for eth0 using Nano.The following Steps will address this problem: This is because the VMware guest will keep the IP configuration details of its parent, and even after changing the Static address, the network card is still unavailable. After cloning the Virtual Machines, the Virtual Network Card shows as not present. I have recently come across an issue when repurposing Centos VMware clones.