You must have server root access to restart SSH service on a linux server. The below commands will work only if your linux server is CentOS 6 or RHEL 6 release. Before doing the below steps you must check the file “/etc/redhat-release” to find the OS version. root@server $ cat /etc/redhat-release.

• Sudo systemctl restart ssh To restart the SSH server/daemon. Going forward with systemd starting with Ubuntu 15.04, you now use this syntax to stop, start, or restart services: sudo systemctl Share. Improve this answer. Follow edited Nov 27 '17 at 3:33.
• In order to run an OpenSSH server, you must have the openssh-server installed (see Section 8.2.4, “Installing Packages” for more information on how to install new packages in Red Hat Enterprise Linux 6).

You must have server root login details to restart SSH service. The server login details will be provided by your webhosting company/Datacenter. You can log into the server using putty software. Putty software can be downloaded from the website putty.org and you can connect to your server via SSH. Use systemctl command instead of ‘service’ command to restart service on CentOS 7 and RHEL 7 servers. RHEL 7 and CentOS 7 migrated to Systemd and commands like ‘service’ and ‘chkconfig’ is now done using ‘systemctl’.

Example:

In the above CentOS 7 server you can see that “service sshd restart” command gets redirected to new command “systemctl restart sshd.service”. SSH Service is restarted but it shows from now on you should use “systemctl” command to restart instead of using ‘service’ command.

“/etc/init.d/sshd restart” command will not work on centOS 7 servers. You will see the below error if you try to restart using that command.

HOW TO RESTART SSH SERVICE ON CENTOS 7 / RHEL 7 server

Do the below steps to restart SSH service on CentOS 7 / Redhat 7 Servers.

1. Log into your Linux Server via SSH as ‘root’ user

2. Run the command ‘systemctl restart sshd.service’ to restart SSH

Command 1 : service sshd restart

OR

Command 2 : systemctl restart sshd.service

root@server [~]# service sshd restart
Redirecting to /bin/systemctl restart sshd.service

Glencoe math course 1 pdf. root@server [~]# systemctl restart sshd.service
root@server [~]# .vid file download free.

HOW TO CHECK STATUS OF SSH SERVICE ON CentOS 7 / RHEL 7 server

The below commands can be used to check the current status of SSH service, it will show whether the service is active or inactive.

1. Log into your Linux server as ‘root’

2. Run the Command ‘systemctl status sshd.service’ to check status of SSH service.

Command 1 : service sshd status

OR

Command 2 : systemctl status sshd.service

root@server [~]# systemctl status sshd.service
* sshd.service – OpenSSH server daemon
Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2016-04-24 20:14:10 EDT; 1min 10s ago
Docs: man:sshd(8)
man:sshd_config(5)
Main PID: 2881 (sshd)
CGroup: /system.slice/sshd.service
`-2881 /usr/sbin/sshd -D

Apr 24 20:14:10 server systemd[1]: Started OpenSSH server daemon.
Apr 24 20:14:10 server systemd[1]: Starting OpenSSH server daemon…
Apr 24 20:14:10 server sshd[2881]: Server listening on 0.0.0.0 port 22.
Apr 24 20:14:10 server sshd[2881]: Server listening on :: port 22.

Active: inactive (dead) —> If the status shows “inactive (dead)” then it means SSH service is not running on this server

Active: active (running) —> If the status is “active (running)”, it means SSH service is running fine on this server

HOW TO START SSH SERVICE ON CENTOS 7 / REDHAT 7 SERVERS

Run the below command to start SSH service (if the service is not running)

1. Log into Linux server as root user

2. Run the below command to start SSH service

Command 1 : systemctl start sshd.service

OR

Command 2 : service sshd start

HOW TO STOP SSH SERVICE ON CENTOS 7 / REDHAT 7 SERVERS

Run the command ‘systemctl stop sshd.service’ to restart SSH service.

NOTE : The below commands will stop sshd service on your server and you might get disconnected from SSH. Run this command only if you have console access so that you can start the service.

Command 1 : service sshd stop

OR

Command 2 : systemctl stop sshd.service

root@server [/]# systemctl stop sshd.service

OR

root@server [/]# service sshd stop
Redirecting to /bin/systemctl stop sshd.service

[root@server /]# ps aux | grep ssh
root 221572 0.0 0.0 64348 1180 ? Ss Jan26 0:55 /usr/sbin/ssh

Command to kill the above SSH process : kill -9 221572

chkconfig commands will not work on centOS 7 servers so you must use the below commands to enable and disable the SSH service in the runlevel.

Enable SSH service : systemctl enable sshd

Disable SSH service : systemctl disable sshd

Run the below commands to check whether SSH service is enabled and active

[root@server ~]# systemctl is-failed sshd.service
active

Restart Openssh Server

[root@server ~]# systemctl is-active sshd.service
active

Windows Openssh

[root@server ~]# systemctl is-enabled sshd.service
enabled