Disable root remote login to centos (enable sudo)

By default, sudo is not enabled for CentOS, and you can directly log on to the server as a Super Administrator. to ensure security and reduce the loss caused by misoperations, we recommend that you enable sudo CentOSsudo.

1. add a sudo user
Run the mongodo command and find:

Copy codeThe code is as follows:
Root ALL = (ALL) ALL

Add the following: (Note: qianyunlai is a new common user in Linux)

Copy codeThe code is as follows:
Qianyunlai ALL = (ALL) ALL

2. prohibit root user logon
Edit/etc/ssh/sshd_config and set

Copy codeThe code is as follows:
PermitRootLogin yes

Change

Copy codeThe code is as follows:
PermitRootLogin no

Restart sshd:

Copy codeThe code is as follows:
Service sshd reload