This article covers how to set up your network interface using Netplan and NMTUI. Setting up the network interfaces is one of the most basic step that every system administrator and server engineers have to do to make it accessible over the network.

Netplan is based on YAML based configuration system that makes configuration process very simple. Netplan has replaced the old configuration file /etc/network/interfaces that we previously used for configuring network interfaces in Ubuntu.

To Restart the network service

1. Once all the configurations are successfully applied, restart the Network-Manager service by running the following command:

$ sudo systemctl restart network-manager

2. If you are using a Ubuntu Server, instead use the following command:

$sudo systemctl restart system-networkd

To Verify IP address

Now to verify if the new configurations are successfully applied, run the following command to verify the IP address:

$ ip a

The Netplan default configuration file is under the directory /etc/netplan

You can find that using the following command:

$ ls /etc/netplan/

To view the content of Netplan network configuration file, run the following command:

$ cat /etc/netplan/*.yaml

This article will guide you on how to start, stop, and restart the #network service on different Linux distribution like Ubuntu, #Debian, Linux Mint, and CentOS 8. Moreover, you can troubleshoot the network #error through the #NetworkManager tool on #CentOS 8.

Please don't stop services if you have a remote ssh connection that may create a problem.

Restarting networking on a desktop machine will cause dbus and a bunch of #service to stop and never be started again, usually leading to the whole system being unusable.

To restart a Linux service:

1. Linux provides fine-grained control over system services through #systemd, using the systemctl command.

2. To verify whether a service is active or not, run this command: sudo systemctl status apache2.

3. To stop and restart the service in Linux, use the command: sudo systemctl restart SERVICE_NAME.

This article will guide you on how to import .opvn (OpenVPN config) file using a GUI or CLI method in Linux.

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