CentOS fails to use the key to log on to the server. centoskey

CentOS fails to use the key to log on to the server. centoskey
Problem

Configure the key Logon Settings on the target server;
Log on to the local machine using ssh.
A password exception occurs;
You are prompted to enter the user password instead of the key password.

Solution:

Selinux is enabled by centos by default. You need to manually close this program.
Usage:
/Usr/sbin/setenforce 0 Immediately disable SELINUX
Second:
Use the text editing tool to open/etc/selinux/config
Comment out SELINUX = enforcing: # SELINUX = enforcing, and add a new line: SELINUX = disabled to exit and save.
Restart the sshd service.

It may be because selinux is enabled that sshd logon cannot use the key authentication method.

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