Service network restart

This relates to Linux System Process Initialization (SysV).

The main purpose of init is to start and stop essential processes on the system. There are three major implementations of init in Linux, System V, Upstart and systemd.

Linux Sys V starts and stops processes sequentially. Sys V scripts start and stop services referencing runlevels which are set from 0 to 6.

Sys V

service network restart

System V is on its way out with respect to Linux.

systemd

This system manager has replaced Sys V and uses new commands.

systemctl is command line utility and primary tool to manage the systemd daemons/services such as (start, restart, stop, enable, disable, reload & status).

systemd uses .service files Instead of bash scripts (SysVinit uses). systemd sorts all daemons into their own Linux cgroups and you can see the system hierarchy by exploring /cgroup/systemd file.

Rather than "service" we use "systemctl" which is short for 'system control' and is unfortunately a rather ugly command as one now has to keep straight an abbreviated phrase rather than a common English word.

Activate a service immediately:

systemctl start foo

Deactivate a service immediately:

systemctl stop foo

Restart a service:

systemctl restart foo

Show the status of a service including if it is running or not:

systemctl status foo

Enable a service to be started on bootup:

systemctl enable foo

Disable a service to not start during bootup:

systemctl disable foo

Prevent a service from starting dynamically or even manually unless unmasked:

systemctl mask foo

Check if a service is already enabled or not:

systemctl is-enabled foo

Redhat / Fedora / CentOS

CentOS 7 restart network service

In centos 7 or RHEL7, the network service name is changed to “network.service“, issue the following systemctl command to restart network service on your current system:

systemctl restart network.service

or

systemctl restart network

To check the status of network service, run the following command:

systemctl status network.service

Debian / Ubuntu / Mint

How to restart network in Ubuntu Server:

/etc/init.d/networking restart script based command.

Use service to run a System V init script such as networking.

service restart networking

Debian 6 : command error /etc/init.d/networking restart is deprecated because it may not enable again some interfaces

command error /etc/init.d/networking restart is deprecated because it may not enable again some interfaces

Restart networking for the latest version of Ubuntu server.

systemctl restart networking

To start networking service, enter :

sudo /etc/init.d/networking start

OR

sudo service networking start

To stop networking service, enter:

sudo /etc/init.d/networking stop

OR

sudo service networking stop

A note about desktop users

If above command failed, try the following command:

sudo service network-manager restart

OR systemd based Ubuntu system (latest version:

sudo systemctl restart network-manager