Restart Ssh Service



  1. Restart Ssh Service Windows
  2. Ubuntu Restart Ssh Service
  3. Restart Ssh Service Linux
  4. Restart Ssh Service Mac Catalina
  5. Restart Ssh Service Ubuntu

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’.

Why you need to Restart SSH Service. As root System Administrators its one of the common tasks you need to be done on live servers is restarting services.If you change ssh configuration file (for example you change the SSH port number) this modification require a restart to take effect. The service command should continue to work as Debian has kept version 8 (jessie) backward compatible in this sense, but you may want to try systemd's methodology instead: sudo systemctl restart Note the command (restart) and the service name are inverted. This video demonstrates how to reboot your server over SSH.The big thing to know if that if you’re logged in as the “root” — most powerful — user on the syst. This article will show you how to restart the sshd service on Solaris 10. To Restart the SSH Service Login to the command-line terminal Run the command: svcadm.

# service sshd restart or # /etc/init.d/sshd restart For systemd Systems # systemctl restart sshd or # systemctl restart sshd.service 4) How To Reload The ssh Service In Linux? Use the below commands to reload the ssh server in Linux. For SysVinit Systems # service sshd reload or # /etc/init.d/sshd reload For systemd Systems.

Example:

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

[root@server]# /etc/init.d/sshd restart
-bash: /etc/init.d/sshd: No such file or directory
CentOS 7 servers have systemd so the commands are entirely different and these commands will not work on server with CentOS 6 and older versions. You must make sure the OS is version 7 before running the below commands.

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

root@server [~]# systemctl restart sshd.service
root@server [~]#

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

Restart Ssh Service Windows

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 daemonRestart Ssh Service
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
Services 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

In the below server you can see that process ID of SSH service is 221572, killing this process will stop SSH service and you will get disconnected from the server.
[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

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

Ubuntu Restart Ssh Service

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

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
CentOS Linux release 6
The commands are different on other linux operating system so please check the OS before running the below commands. You can use software like putty to connect to your RHEL server through SSH. The below commands will work only on CentOS and Redhat 6 server. I have created another article for centOS 7 servers.


HOW TO RESTART SSH SERVICE ON CENTOS 6 / RHEL 6 server

1 . Log into your CentOS Server as ‘root’ user

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

Command 1 : service sshd restart

OR

command 2 : /etc/init.d/sshd restart

You can either use the command “service sshd restart” OR “/etc/init.d/sshd restart” to restart SSH service. There is no need to run both commands.

[root@server ~]# service sshd restart
Stopping sshd: [ OK ]
Starting sshd: [ OK ]

[root@server ~]# /etc/init.d/sshd restart
Stopping sshd: [ OK ]
Starting sshd: [ OK ]



HOW TO STOP SSH SERVICE ON CENTOS/REDHAT 6 SERVERS

Do the below steps to stop SSH service on linux server.

IMPORTANT : You might get disconnected from the server if you stop SSH service on your server. You can safely stop SSH service only if you have console access to the server.

Command to stop SSH service on centOS/RHEL linux server is given below.

1. Log into your linux server via SSH as ‘root’ user

Restart Ssh Service Linux

2. Run the command ‘service sshd stop’ to stop SSH

Command 1 : /etc/init.d/sshd stop

OR

Command 2 : service sshd stop

root@server [~]# /etc/init.d/sshd stop
Stopping sshd: [ OK ]

OR

root@server [~]# service sshd stop
Stopping sshd: [ OK ]


HOW TO START SSH SERVICE ON CENTOS/REDHAT SERVERS

Commands to start SSH service on Linux Server is given below.

1. Log into your linux server as root user

2. Run the command ‘service sshd start’ to start SSH service

Command 1 : /etc/init.d/sshd start

OR

Command 2 : service sshd start

root@server [~]# /etc/init.d/sshd start

Restart Ssh Service Mac Catalina

Starting sshd: [ OK ]

OR

root@server [~]# service sshd start
Starting sshd: [ OK ]

[OK] = This means service is started successfully
[Failed] = Means the service failed to start for some reason. Example : The service won’t start if the disk space is 100% full or if there is high load on the server. You must check the server logs to find the exact error and troubleshoot accordingly.

HOW TO CHECK THE STATUS OF SSH SERVICE

Run the command ‘service sshd status’ to check the current status of SSH service. This command will show whether SSH service is running or stopped on your linux Server.

The below shows that SSH service is running fine on the server.

Command : service sshd status

OR

Command : /etc/init.d/sshd status

root@server [~]# service sshd status
openssh-daemon (pid 14945) is running…

root@server [~]# /etc/init.d/sshd status
openssh-daemon (pid 14945) is running…

‘14945’ is the process ID of the SSH process. Killing this process ID will stop SSH service and you will get disconnected from the server.

If the SSH service is down on the server it will show “openssh-daemon is stopped”

root@server [~]# service sshd status
openssh-daemon is stopped


Restart Ssh Service Ubuntu

“openssh-daemon is stopped” is stopped means the service is not running on your server. You can run the command “service sshd start” to start the service. You must check the server logs if you are unable to start the service.

If you have any webhosting control panels installed (like cPanel, plesk etc) then you can try restarting the service from frontend panel.