CentOS | Redhat - Assigning a Static IP address and network using NMCLI

The quickest and the best way to configure a brand new installation of Redhat/CentOs operating system using nmcli command line tool.

Here are the steps we need to take in order to change network configurations:

Check current network configuration
Identify network adapter
Configure network using nmcli tool
Restart network services
Verify new configurations

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[root@vstorage ~]# nmcli device show
GENERAL.DEVICE:                         ens192
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         00:50:56:A6:BF:17
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connected)
GENERAL.CONNECTION:                     ens192
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/4
WIRED-PROPERTIES.CARRIER:               on
IP4.ADDRESS[1]:                         192.168.0.100/24
IP4.GATEWAY:                            192.168.0.1
IP4.ROUTE[1]:                           dst = 192.168.0.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[2]:                           dst = 0.0.0.0/0, nh = 192.168.0.1, mt = 100
IP4.DNS[1]:                             192.168.0.222
IP4.DNS[2]:                             8.8.8.8
IP6.ADDRESS[1]:                         fe80::a2f2:cbad:2037:bafb/64
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 100
IP6.ROUTE[2]:                           dst = ff00::/8, nh = ::, mt = 256, table=255

GENERAL.DEVICE:                         lo
GENERAL.TYPE:                           loopback
GENERAL.HWADDR:                         00:00:00:00:00:00
GENERAL.MTU:                            65536
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.ADDRESS[1]:                         127.0.0.1/8
IP4.GATEWAY:                            --
IP6.ADDRESS[1]:                         ::1/128
IP6.GATEWAY:                            --
[root@vstorage ~]#

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nmcli> print
===============================================================================
                      Connection profile details (ens192)
===============================================================================
ipv4.method:                            manual
ipv4.dns:                               192.168.0.222,8.8.8.8
ipv4.dns-search:                        --
ipv4.dns-options:                       ""
ipv4.dns-priority:                      0
ipv4.addresses:                         192.168.0.100/24
ipv4.gateway:                           192.168.0.1
ipv4.routes:                            --
ipv4.route-metric:                      -1
ipv4.route-table:                       0 (unspec)
ipv4.ignore-auto-routes:                no
ipv4.ignore-auto-dns:                   no
ipv4.dhcp-client-id:                    --
ipv4.dhcp-timeout:                      0 (default)
ipv4.dhcp-send-hostname:                yes
ipv4.dhcp-hostname:                     --
ipv4.dhcp-fqdn:                         --
ipv4.never-default:                     no
ipv4.may-fail:                          yes
ipv4.dad-timeout:                       -1 (default)

CentOS | Redhat – Assigning a Static IP address and network using NMCLI

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