Tutorial on how to add a non-root account with sudo permissions on CentOS system

In the previous article, we introduced how to create a non-root user account with sudo permissions in the Ubuntu operating system. For details, see: How to create a non-root user account with sudo permissions in the Ubuntu system. Today we will introduce how to create a non-root user account with sudo permissions in the Ubuntu system. How to create a non-root account with sudo permissions in the system. It is a best practice to perform server administration as a non-root user. For security reasons, when deploying a CentOS system on a VPS, the first priority is to create a non-root user with sudo access. This tutorial applies to the following system versions, with or without SELinux enabled.

• CentOS 8
• CentOS 7
• CentOS 6

Add new user account

Use the adduser command to create a new user account.

# adduser example_user

Use the passwd command to set a strong password:

# passwd example_user Changing password for user example_user. New password: Retype new password: passwd: all authentication tokens updated successfully.

Add users to wheel group

Use usermod to add new users to the wheel group.

# usermod -aG wheel example_user

Edit Sudoers file

Use visudo to check the sudoers file.

#visudo

Look for the wheel group and remove the comment if the line is disabled. When you're ready to save your file, it should look something like this.

## Allows people in group wheel to run all commands %wheel ALL=(ALL) ALL

Save and exit vi, press ESC, then :WQ, then ENTER.

Note: The visudo utility performs syntax checking before committing your edits to the file. A malformed sudoers file can corrupt your system. Never edit /etc/sudoers directly. For example, if you make a mistake, you'll see this when exiting visudo.

visudo: >>> /etc/sudoers: syntax error near line 64 <<< What now? Options are: (e)dit sudoers file again e(x)it without saving changes to sudoers file (Q)uit and save changes to sudoers file (DANGER!)

Whether the test was successful

Switch to new user

#su-example_user

Use whoami to verify you are the new user, then test sudo access using sudo whoami, which should return root.

$ whoami example_user $ sudo whoami [sudo] password for example_user: root

The new user account is ready for use. As a best practice, use this sudo user for server administration. You should avoid using root to perform maintenance tasks.

At this point, we have fully introduced how to create a new non-root account with sudo permissions on Ubuntu and CentOS systems. Next, you can share more tutorials.

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