First switch to the root user and execute the following command to check whether sshd is installed on this machine.
rpm -qa | grep ssh
If it is not installed, you need to execute the following command to install it.
yum install openssh-server
#Then start the SSH service. Enter the following command to restart the ssh service.
service sshd restart
Command: service sshd start Start service | Command: service sshd stop Stop service
After restarting, you can enter: netstat -antp | grep sshd to check whether port 22 is started (optional)
Finally set the service to automatically start at boot
Enter the following command
chkconfig sshd on
Note: If chkconfig sshd off, SSH is prohibited from starting at boot.
Recommended tutorial: centos tutorial
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