You are giving the debug RHCT exam. The examiner told you that the password of root is redhat. When you tried to login displays the error message and redisplayed the login screen. You changed the…

When root unable to login into the system think: 1. Is password correct? 2. Is account expired? 3. Is terminal Blocked? Do these Steps: 3. Boot the System on Single user mode. 4. Change the password 5. Check the account expire date by using chage -l root command. If account is…

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Question

You are giving the debug RHCT exam. The examiner told you that the password of root is redhat. When you tried to login displays the error message and redisplayed the login screen. You changed the root password, again unable to login as a root. How will you make Successfully Login as a root.

Explanation

When root unable to login into the system think:

Is password correct?
Is account expired?
Is terminal Blocked? Do these Steps:
Boot the System on Single user mode.
Change the password
Check the account expire date by using chage -l root command. If account is expired, set net expire date: chage -E "NEVER" root
Check the file /etc/securetty Which file blocked to root login from certain terminal.
If terminal is deleted or commented write new or uncomment.
Reboot the system and login as a root.

Topics

#PAM authentication#root login#SELinux#login troubleshooting

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