When executing the su command to switch the root user under centos, it prompts that the authentication failed.

Problem:

When using the su command to switch to the root user in the terminal, there will be an Authentication failure prompt.

Cause:

The root user has not been created.

(Recommended tutorial: centos tutorial)

Solution:

1. First use the shortcut key crtl alt T to open the terminal, and the user will be displayed. Name@computer name: ~$, the symbol $ means you are now under normal user rights.

2. Create a password for root

sudo passwd root

Enter the password. Passwd: password updated successfully will be displayed after success, and then you can switch to the root user.

Recommended related video tutorials: linux video tutorial

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