Centos 7 Restart Network Interface

A common use case is to override the current default MTU of 64000 for the public network interface. I even tried adding all 3 at once, and none appear when I type ifconfig. Menu How to setup LACP network bonding interface on RHEL / CentOS 7 11 June 2015. Step 1: Show network card on Centos 7 [[email protected] ~]# nmcli d DEVICE TYPE STATE CONNECTION eno16777736 ethernet connected Wired connection 1 lo loopback unmanaged — [[email protected] ~]#. When you install CentOS from a local installation source to a local storage device, be sure to configure at least one network interface manually if you require network access when the system boots for the first time. If you're assigning a private network to an existing machine (or deploying your own operating system), you'll need to configure the IP addresses on the private interface. I have configured dhcpd to handle the local lan interfaces. RHEL 7 / CentOS 7 Installation Video. Please see this article for instructions if you don’t know how to connect. Issue the following command to restart network-manager. After updating to RHEL 7. As we are going to set up a 3 nodes Kafka cluster we need 3 CentOS 7 Linux servers with the latest updates and JDK 1. Once will be considered the public interface and the other will be the private interface. To change it to the legacy names like eth0, eth1 use the procedure in this post. it might be different in your case ( Eg: em1 or p4p1 ). How edit a NIC (Network Interface Card) on Centos 7 Restart the network. If this is not a production system, you can also reboot the system to make sure the hostname is changed properly, and the system is picking it up properly during startup. zone Modify zone for the connection in firewalld – firewall-cmd --zone=home --change-interface=eth0 --permanent Optional - restart the network and firewalld service – systemctl restart network. While it is possible to manually edit it, it is usually simpler to just delete it and reboot the system, so it rescans network adapters attached to the system and acquires their MAC addresses. This option allows you to install CentOS in graphical mode even if the installation program is unable to load the correct driver for your video card. Let's restart the network services of our server: service network restart. This guide explain you to setup network on RHEL/CentOS 7. Step 1: Check your network interface in CentOS system [[email protected] ~]# ip addr. Configuring network on any operating system involves configuring an IP range for the system. Introduction. Here we have 2 interfaces named “ enp0s17 ” and “ enp0s18 ”. : The interface we configured is ready for use. systemctl restart network Verify Static IP Address. But sometimes there are situations where you don't want to use the provided values. 3ad) bonding network interface. Configure IP address using command line. Different network interfaces and sources can be assigned to specific zones. Specifically, is there a way to change the network interface name you see in ifconfig and nmcli connection without rebooting CentOS 7? I changed the name in network-scripts. When you try to check network interfaces, and IP address on the server, you will only see localhost interface. I got a message saying OK and can see when i run. By default on Centos 7, network interface is disabled because "ONBOOT = no" in network interface configuration. you'll know exactly which zone to apply to various interfaces on your CentOS 7 servers. To make the changes take effect please restart the network services using: service network restart. In order to change the device name without restarting network services, use the ip link commands suggested by James Shewey (ip link set name ). we need to bring the network interface. How to Set Up FirewallD on CentOS 7. The primary network interface, eth0, of the gateway will be assigned a public IP address of 203. HWADDR & UUID I am fuzzy on what exactly what HWADDR and UUID provide in value, but one or both may be used by network manager which CentOS minimal does not utilize. The switch configured on the server (Centos 7) is configured as trunk for VLAN#115,2014. Choose "Edit a connection". d/network stop # /etc/init. X, just with the addition of the new service management interface, SystemD (systemctl). eth0 or eth1. In older versions of RHEL/CentOS, the default means of configuring network interfaces was via network scripts and use of the Network Administration Tool, which is now deprecated. In this tutorial, we will use nmcli which stands for Network Manager Command Line. # ip addr //have you picked up an ip address from the network DHCP server? If not, try: # ifdown enp0s3 # ifup enp0s3 3. But after executing the command below: #touch /etc/sysconfig/network #systemctl restart network. netsh interface show interface command still saying Ethernet 2 and Wi-Fi 2 after reboot. Restart the CentOS, and it should be booted in GNOME GUI mode. April 2016 (4) December 2011 (3) October 2011 (1) September 2011 (3) Recent Posts. Open ‘Network’ either by clicking network icon & then selecting ‘Network Settings‘ on top-left corner of the screen or goto Applications-> System Tools-> Settings-> Network. The CentOS virtualization host can be managed from a separate local or distant remote system connected through the outer network interface. However, once we've done this, triggering restarts from the platform will stop a single node, which then is unable to restart. Now we can choose network interfaces where we want to configure network and click "Edit" like below screen shot:-We can edit our network interfaces. In the following examples we will cover how to manually configure the network by editing configuration files and how to use new Network Manager configuration tool "nmtui". This post we show how to change interface names in RHEL 7 and CentOS 7. This guide explain you to setup network on RHEL/CentOS 7. Then If you'd like to use the network interface name "ethX", configure like follows. Before installing and use the Openstack, it is recommended to disable firewalld, NetworkManager and SELinux on your machine. To identify ethernet cards in your machine,you can use any of the three commands below. New Naming Scheme for the Network Interface on RHEL 7/CentOS 7 Red Hat Enterprise Linux 7 (RHEL 7) and CentOS 7 come with the new naming scheme for the network devices. The utility keeps records of the previous data displayed in history files and by default only shows difference between the last and the current call. Reboot your system after installing a new firmware or a new driver in order to ensure that the changes take effect. To ensure a balance of traffic or to enable multiple network segments in a VM, it is advisable to install more than one interface card. It can be defined as the aggregation or combination of multiple NIC into a single bond interface. Network Configuration in RHEL/CentOS Linux 7. 04 64-bit How To Install PHP 7. Menu How to setup LACP network bonding interface on RHEL / CentOS 7 11 June 2015. The first thing after installing a Linux OS as a server is configuring the network interface to have remote access and from your workstation/laptop and a cup of coffee you could manage your server at your convenient. CentOS 7 no longer uses the naming convention previously used for network interfaces, e. It uses GNOME Shell in classic mode so the feel is not too far removed from that of GNOME 2. This is no longer the case, as the first network interface is now labeled enp3s0. 84 MB) PDF - This Chapter (1. Question: On CentOS 7, I want to switch from DHCP to static IP address configuration with one of my network interfaces. Finalize network setup. Chapter Title. This will cause issues when adding 10 or more additional IPs in WHM, as network interface name will be longer than the 15 characters. It auto mounts and opens the window showing all the files. Now let me share the steps to configure iSCSI target and initiator on RHEL/CentOS 7 and 8 Linux node. If your screen appears distorted or goes blank when using the Install CentOS 7. It's called Consistent Device Naming because previously the name of the devices [eth0,eth1,eth2] was completely dependant upon the order the kernel detected them as it booted. It is defined as the combination of multiple NIC into a single bond interface. To restart network interface, enter: # /etc/init. How to Configure Network Interfaces on CentOS 7 minimal Please Subscribe my Channel : https://www. Stack Exchange Network. Also, you have to decide whether you want to configure a static IP or dynamic IP. That looks good. For CLI use nmtui for example. To check which network interface is restart the network,. $ nmtui Once nmtui is open, go to the Edit a network connection and select the interface you want to add an alias on. Let’s restart network services on the client machine. Prior to CentOS 7 the network interfaces were numbered, starting from 0. Enter the command that will list all interfaces of the server. In order to find out IP Address on CentOS with minimal installation. CentOS 6; CentOS 7; Introduction. Seeing that we have a few servers running CentOS 6, we had to put together a game plan to migrate our clients’ servers to CentOS 7 in the most efficient way possible. New Naming Scheme for the Network Interface on RHEL 7/CentOS 7 Red Hat Enterprise Linux 7 (RHEL 7) and CentOS 7 come with the new naming scheme for the network devices. Enter the configuration for vtnet1 (the private network interface). This manual will explain how to configure network interface. This guide will explain how to add a secondary IP address to a network interface on RHEL / CentOS 7/8 server. Then you simply need to change to the newly-added IP address:. NIC (Network Interface Card) bonding is also known as Network bonding. d/network stop # /etc/init. Configuring network on any operating system involves configuring an IP range for the system. Restart the network daemon by using the command “systemctl restart network” 8. NIC bonding is an efficient method to increase the available bandwidth of a server. 29 Nov, 2016 in GNU/Linux tagged CentOS / centos 7 / firewall / firewalld / GNU/Linux by Tux firewalld (Dynamic Firewall Manager) tool provides a dynamically managed firewall. Please see this article for instructions if you don’t know how to connect. One NIC connects to the internet via the regional ISP and the other NIC is used for private networking and is connected to the switch. Networking- Configure IP on FEDORA 23, CENTOS 7, ORACLE LINUX 7 a system restart, they must be placed in per-interface configuration the network interfaces. or #/etc/init. On CentOS 7, SELinux prevents /usr/sbin/zebra from writing to its configuration directory by default. It has a detailed explanation with every step. It can be defined as the aggregation or combination of multiple NIC into a single bond interface. The following is a basic guide for the configuring of network settings on Red Hat Enterprise Linux 7. you'll know exactly which zone to apply to various interfaces on your CentOS 7 servers. Once Ubuntu 16. An alias defining the network interface name is set – e. Set Static Ip Linux Command Line Centos If you want to set up a static IP address on a network interface in CentOS 7, Save changes and restart the network service using the following command: Do you want to receive Linux related. When the NetworkManager is disabled, the interface can be configured for use with the network service. Linux System Commands. In CentOS or Red Hat Enterprise Linux (RHEL) 7, you can find your /etc/resolv. 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). For those who have the problem of no network after doing a restart or stop|start, the issue may be that you started your network service but have not brought up your network interface (e. It has 2 NICs (Network Interface Cards). In the examples, eno16777728 is equivalent to interface eth0 found with CentOS 6 which results with the configuration file ifcfg-eno16777728 versus ifcfg-eth0. Here you will find RHEL 7 instructions to configure IPv4 addresses and perform basic IPv4 troubleshooting. The details of the naming convention are available in the RHEL 7 Networking Guide. Here we have 2 interfaces named " enp0s17 " and " enp0s18 ". To do this, a consecutive number is simply appended to the interface name, starting with 0 for the first alias. Now you can issue the command "ip addr" again and you should see an IP address listed for interface eth0. Network Interfaces¶. In the examples, eno16777728 is equivalent to interface eth0 found with CentOS 6 which results with the configuration file ifcfg-eno16777728 versus ifcfg-eth0. The base CentOS 6 installation includes the tool by default. This article is specific to CentOS 7 because compared to previous releases of CentOS 7 uses NetworkManager, which handles network interfaces and IP addresses slightly differently. Choose an internal IP address that you want to use, for example:. Basically, it is a wrapper around iptables and it comes with graphical configuration tool firewall-config and command line tool firewall-cmd. 1 with a connection to the private network over LAN 2. Once Ubuntu 16. Method 2 - Using graphical interface. pada kali ini saya akan membahas tentang Cara Mengubah IP Address di CentOS 7 Server. We are going to configure kubectl on that server. Setup network on centos 7 let’s start, Type “ nmcli d ” command in your terminal for quick identification of Ethernet cards installed in your machine. Create a new user to access Libvirt by typing. RedHat 7; RedHat 6; Ubuntu 16. It is defined as the combination of multiple NIC into a single bond interface. Then If you'd like to use the network interface name "ethX", configure like follows. I have three of those interfaces configured and running. virtualDev = "e1000". Multiple EC2 Network Interfaces on Red Hat / CentOS 7 If you're not running Amazon Linux with the built in network interface management tools, adding multiple ENIs on the same subnet can be a confusing experience. This guide will discuss manually creating a network configuration file and using Network Manager CLI tool - nmcli. (6 replies) I googled to see how I might restart the network interface in CentOS. Network Design. For RHEL/CentOS/Fedora. large serves. I n this article we are going to learn How to install Monitorix System and Network monitoring tools in Redhat/CentOS/Fedora. d/network restart To stop and start use the following option (do not run them over remote ssh session as you will get disconnected): # /etc/init. To add additional IP address and to edit connection settings use the Network Manager tools. So these commands should be working on the popular distributions like Arch Linux, CentOS, Debian, Gentoo, RHEL, and Ubuntu. The old ifconfig, route, and netstat are replaced by ip. Generally after installing CentOS 7 , the network cannot be connected in that machine. Networking Bonding in RHEL/CentOS 7: Combining multiple NICs into one. Get answers from your peers along with millions of IT pros who visit Spiceworks. Thus, the first alias of eth0 is eth0:0. Restart the Network. I must say when I started configuring static IP's on Cent OS 7 via CLI it was pretty confusing, but then i understood it - it became much easier. 1804 server has a loopback and ethernet network cards. We are partial to still using ext4. This makes the interface only come up when the parent interface comes up, while ONBOOT=YES would pull up the parent interface even if that is configured to not come up on boot. 1 with a connection to the private network over LAN 2. 1, Palo Alto Networks recommends CentOS 6. Choose "Edit a connection". Here we have 2 interfaces named “ enp0s17 ” and “ enp0s18 ”. Open and edit network configuration file for (eth0 or eth1) using your favorite editor. Configuring network on any operating system involves configuring an IP range for the system. The Samba client that is used for backing up the appliance uses SMB 2 by default on CentOS 7. Kernel is the source for vnstat. Restart Network Interface Using Command Lines in Linux USNLHIID Ask a question. Since CentOS, beginning with version 7, uses systemd instead of SysVinit for service management, we will use the systemctl command instead of the / etc/init. VLAN interfaces created using ip commands at the command prompt will be lost if the system is shutdown or restarted. The network bridges are used in networking for Virtual Machines. The server router has CentOS 7 installed and I am going to configure it as a router on the network. NIC bonding is an efficient method to increase the available bandwidth of a server. (I tried all virtual Intel adapters and bridge mode - results were the same, I mean negative ones) Workaround: Command sudo service networking restart on guest machine. This is where our client-1 machine comes in. This network bridge allows virtual machines to have access to the external network and vice-versa, follow this guide to setup network bridge on CentOS 7 / RHEL 7. Configuring CentOS 6/7 Network Interface. x: sudo yum install bridge-utils Step 2 – Disable Network Manager. For CLI use nmtui for example. I want to restart the network service on my centos 7 system, How to restart/start/stop network service using systemctl command under centos 7 operating system? this post will guide you how to restart/stop/start network service using "systemctl" command in centos 7. If Network Manager is not controlling an interface, its STATE will be listed as unmanaged. With accelerated networking, network traffic arrives at the VM's network interface (NIC), and is then forwarded to the VM. This post we show how to change interface names in RHEL 7 and CentOS 7. # # Restart Network Interface # systemctl restart network. Open ‘Network’ either by clicking network icon & then selecting ‘Network Settings‘ on top-left corner of the screen or goto Applications-> System Tools-> Settings-> Network. 1 on centos 7 install ssl on haproxy centos 7 or ubuntu 14. The box has crashed and I had to reboot it. Curious to know how? Well, Follow me, It is not that difficult. d/network restart. Can you guys provide steps on how to configure the /29 ip range on my centos 7 server?. To solve this either change network adapter type to e1000 or add this line to the vmx file ethernet0. Eth1 to use static ip, and the ip dhcp eth2. Now select the IPv4 tab. Bring the interface down and back up with ifdown and ifup: [[email protected] network-scripts]# ifdown eth0:0 && ifup eth0:0. So these commands should be working on the popular distributions like Arch Linux, CentOS, Debian, Gentoo, RHEL, and Ubuntu. I have loaded # lsmod | grep 8021q # modprobe 8021q I would like to configure an IP address on the server. The first thing after installing a Linux OS as a server is configuring the network interface to have remote access and from your workstation/laptop and a cup of coffee you could manage your server at your convenient. The server router has CentOS 7 installed and I am going to configure it as a router on the network. 1Q VLAN Tagging Using ifcfg Files". How to Restart Network in Ubuntu Server 16. When you try to check network interfaces, and IP address on the server, you will only see localhost interface. Example ifcfg-ethX Interface Configuration File. systemctl restart network Verify Static IP Address. Large MySQL databases can require a considerable amount of memory. The purpose of this article is to describe how to install CentOS 7 on the Raspberry PI 3 B for use as a starting point to install light-weight services such as DNS, NTP, DHCP, Apache, etc. For wired, eth0 with DHCP will show you something like the following image: Just to wrap it up, lets do another ifconifg -a from command line. I'm trying to add a second network adapter to the VM. Here I'm going guide how to configure virtual network interface in Centos ,but other Linux flavors process is similar. Restarting the network interface by using command lines will require certain user privileges, as well as designation as the system's root user, or via the Sudo. In this example, I use 3 virtual machines. : After successful restart, enter: ifconfig -a. This article will help you to configure the network on a CentOS 7 operating system. It can be defined as the aggregation or combination of multiple NIC into a single bond interface. 04 (Xenial) Ubuntu 14. Zones are attached to network interfaces and determine which traffic is allowed on a specific network and which. com/eti9k6e/hx1yo. In CentOS 7 the naming convention for network interfaces is automatically determined based on firmware, topology, and location information can result in a long interface names. service network restart. Set Static Ip Linux Command Line Centos If you want to set up a static IP address on a network interface in CentOS 7, Save changes and restart the network service using the following command: Do you want to receive Linux related. In this article, I’ll show you how to do it through command line. Generally after installing CentOS 7 , the network cannot be connected in that machine. 1) Change the default network interface name to “eth0 Restart the network service(Be careful, if you are. Network Design. We choose the IPSEC protocol stack because of recent vulnerabilities found in pptpd VPNs and because it is supported on all recent operating systems by default. CentOS 7 uses the Network Manager by default (at least the one test install I've done). Step 1: Check your network interface in CentOS system [[email protected] ~]# ip addr. To Add Secondary IP / Alias On Network Interface in RHEL / CentOS 7 This guide will show you how to add an extra IP address to an existing interface in Red Hat Enterprise Linux / CentOS 7. Unix-like system users are already familiar with the terminal. All replies. While in cloned centos 6 server the network adapter is automatically ticked. Can you guys provide steps on how to configure the /29 ip range on my centos 7 server?. ↓ Skip to Main Content CertDepot Everything you need to pass your RHCSA, RHCE, LFCS, LFCE and much more. ip -6 addr add IPv6_address/120 dev eth0. Once you have made the necessary changes restart RHEL7's system networking: # systemctl restart network Confirm that your IP address has been updated:. Once network configuration has been created/updated, you can activate a network interface by running: $ sudo service network restart Note that if you are using Desktop version of Linux, you will need to disable NetworkManager first, before attempting to configure interfaces as described above. Howto enable network interface on Centos 7 and RHEL. Upon rebooting the server for maintenance of an unrelated application (OpManager), the network service will not initialize. In order to change the device name without restarting network services, use the ip link commands suggested by James Shewey (ip link set name ). 3ad) bonding network interface. Icinga 2 is a popular open source network resource monitoring system, and Icinga Web 2 is a web interface for Icinga 2. It has 2 NICs (Network Interface Cards). # systemctl restart NetworkManager. In the left sidebar click on the Network tab. When you install CentOS from a local installation source to a local storage device, be sure to configure at least one network interface manually if you require network access when the system boots for the first time. yum groups install "KDE Plasma Workspaces" I hope above helps you to boot CentOS in graphical desktop mode. service Restart Network Interface in Ubuntu/Debian Linux. What is a proper way to rename a network interface on CentOS or RHEL 7? Traditionally, network interfaces in Linux are enumerated as eth[0123], but these names do not necessarily correspond. First of all, it is necessary to ensure that the kernel module for network teaming (bonding) gets loaded during the boot. Network Configuration. # /etc/init. As aforementioned we are using a cluster running CentOS 7 minimal version. This guide will discuss manually creating a network configuration file and using Network Manager CLI tool – nmcli. But I did not want to do it after every reboot. In this article, I’ll show you how to do it through command line. This happen because Ethernet interfaces are not enabled by default. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. This blog post will show you how to set a static IP address on CentOS 7 from scratch with no prior knowledge of any information about the network. A zone is applied to network interfaces through the Network Manager. Material presented here covers Linux Redhat, Fedora, CentOS, Slackware and other similar distributions. hoặc nhiều network interface hoạt động như 1 card network restart. The network does not come up on boot after a yum update to RHEL 7. 04 is that when you configure new IP Address on a Network interface, it does not remove the old IP Address from the interface after network restart. # systemctl restart NetworkManager. But sometimes there are situations where you don't want to use the provided values. Gnome is the default environment for CentOS 6 Desktop installations. netsh interface show interface command still saying Ethernet 2 and Wi-Fi 2 after reboot. By default CentOS minimal install does not come with pre-configured network, CentOS Minimal Installation Network Configuration Now restart the network interface:. NIC (Network Interface Card) bonding is also known as Network bonding. Change the value of the “ONBOOT” parameter from “no” to “yes”. it might be different in your case ( Eg: em1 or p4p1 ). use systemctl to start, restart and shutdown rhel 7 and centos 7. To make the changes take effect please restart the network services using: service network restart. 101 is the secondary router to which you are adding a default route eth0 is the network interface assigned to your main network (in this case, 10. "Only one command" because that is the only interface where my ssh is working on also. It has 2 NICs (Network Interface Cards). To stop and start use the following option (do not run them over remote ssh session as you will get disconnected): # /etc/init. I used system-config-network tools, and compare the config files, it adds below lines to the end, and after reboot it's OK. To Setup network. Firewalld works on the concept of zones. Interface teaming is introduced in RHEL 7/CENTOS 7 it performs same function as NIC Bonding. 1q VLAN Tagging in a Network interface on RHEL / CentOS and Fedora system. Install System Config Network. It is a combination of two or more NICs into a single bond interface. How to fix eth0 network interface on centos 7 (1) Yum (1) LOVE (1) Love at different ages (1) Archives. d/network restart To stop and start use the following option (do not run them over remote ssh session as you will get disconnected): # /etc/init. CentOS 7 / RHEL 7 get status of network service sudo systemctl status network. By default Centos 6 new installation will not have network access , which means you need to configure ip address to the network interfaces by yourself. To apply your changes, restart your network services. Under the IPv4 Method select the “Manual” option. Once both network connections have been modified, you must restart the network. That looks good. Step 3: Configure internet network. Network interface names are limited to 16 characters in CentOS. com in browser, the DNS server translates the domain name into its associated ip address. Click on Reboot to restart the system. This guide will take you through setting up Hetzner root server, preparing environment for OpenStack, installing the OpenStack Stein release, adding a floating ip subnet through OVS, configuring networking, security. d/network start Fedora/RHEL. The following explains the steps required for migrating an image to a IaaS environment when the OS of the virtual server that is operating in the migration source virtual environment is CentOS 7. We will be using CentOS 7 server, with two interfaces (enp0s8 and enp0s9) connected to a switch as described in the below picture, the new created bond interface will be given the name “bond0”: Create a network script file for the bond interface (bond0):. Now Network Manager should come up with a connected interface. How do I Add Default Gateway. d/network stop # /etc/init. This bridge network allows virtual machines to have access to the external network and vice-versa, follow this guide to create network bridge on CentOS 7 / RHEL7. d scripts to restart the services throughout this book, as follows:. Here we are going to static Network configuration. Setup_Gateway_Routing_On_Multiple_Network_Interfaces. If you are behind a proxy, then there's a couple extra things that you have to do. CentOS 7 comes with Network Manager, a service that runs by default and has a graphical, text as well as command line interface. 110 with a connection to the public Internet through LAN 1. Multiple EC2 Network Interfaces on Red Hat / CentOS 7 If you're not running Amazon Linux with the built in network interface management tools, adding multiple ENIs on the same subnet can be a confusing experience. issue the command sudo systemctl restart network. By using “vi” editor (or other preferred text editor) edit the network interface configuration file. Upon rebooting the server for maintenance of an unrelated application (OpManager), the network service will not initialize. As people were complaining about network interface names changing each time a new one was added, it was decided to call a network interface according to its physical location. There are several ways to configure a static IP address. Automatically enabling your network connection at startup on CentOS 7 The release of CentOS 7 stoked my curiosity so I gave it a go in a VirtualBox virtual machine. conf file, which holds all nameserver configurations for your server, to be overwritten by the NetworkManager. /24 is the subnet mask 10. virtualDev = "e1000". 04 64bit How To Install Docker-CE on Ubuntu Server 19. You will get that dhcp server assigned an ip address from the defined subnet. However, having a network interface called enp2s0 or enp4s2f0 doesn't satisfy everybody. First install CentOS 7 to the system from the minimal installation media. It is fit for just about any server project such as Web Server, File Server, Database Server etc. Linux allows binding of multiple network interfaces into a single NIC using special kernel module called bonding. Setup network on CentOS 7 minimal First, type " nmcli d " command in your terminal for quick list ethernet card installed on your machine:. With ETH0 (or whatever) highlighted press Enter or choose "Edit". This how-to guide shows you the easiest way of adding those additional IP addresses to your CentOS 7 server. With accelerated networking, network traffic arrives at the VM's network interface (NIC), and is then forwarded to the VM. Now that we have given the system the necessary information all we need to do is restart the network service.