[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
Restart Sshd Service In Aix
Stop the sshd daemon. Restart: Equivalent to a stop and then a start command sequence. Reload: Force the sshd daemon to re-read its configuration files without a service interruption. Condrestart: If the sshd daemon is currently running, this is the same as a restart command. Is it possible to restart the SSHD service without restarting the whole appliance? Restart SSH On Debian / Ubuntu Linux. /etc/init.d/ssh restart. Service ssh restart. Sudo service ssh restart. Explains how to reload and restart ssh service (OpenSSH SSHD daemon) under Linux or UNIX like operating systems using command line options. Service ssh restart The service is also controlled by upstart, and not sysvinit. So you'll find it at /etc/init/ssh.conf instead of /etc/init.d/ssh.
1 . Log into your CentOS Server as ‘root’ user2. 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 restartStopping 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
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 stopStopping sshd: [ OK ]
OR
root@server [~]# service sshd stop
Stopping sshd: [ OK ]
Restart Service Sshd Centos 7
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 startStarting sshd: [ OK ]
OR
Centos Restart Ssh Service
root@server [~]# service sshd start
Starting sshd: [ OK ]
[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
Dss 5027 Codes
Command : /etc/init.d/sshd status
root@server [~]# service sshd statusopenssh-daemon (pid 14945) is running…
root@server [~]# /etc/init.d/sshd status
openssh-daemon (pid 14945) is running…
Redhat Restart Sshd Service
‘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”
Ubuntu Restart Sshd Service
openssh-daemon is stopped
If you have any webhosting control panels installed (like cPanel, plesk etc) then you can try restarting the service from frontend panel.