Solution to RHEL6's failure to log on as a Root user

After RHEL6 is installed, you cannot log on to the system as Root on the login interface by default. first, log on to the system as the user created during installation, open the terminal, and convert it to the root user. the corresponding command is suroot, enter the root user password and press Enter. (we recommend that you back up the files to be modified in advance... after installing RHEL 6, you cannot log on to the system as Root on the logon page by default. first, log on to the system as the user created during installation,
Open the terminal and convert it to the root user. the corresponding command is su root. enter the root user password and press enter,
(We recommend that you back up the files to be modified for recovery)
Edit the/etc/pam. d/TPD file
The corresponding command is vi/etc/pam. d/TPD.
Go to www.2cto.com auth required pam_succeed_if.so user! = Root quiet
Delete this sentence
Save (: wq)
Edit/etc/pam. d/TPD-password
Go to auth required pam_succeed_if.so user! = Root quiet
Delete this sentence
Save (: wq)
Reboot is enough.


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