Unable to login as linux user on machines when they are part of Active Directory domain
Environment
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 5
Issue
- Not possible to log in as linux user when linux machines are part of Active Directory domain.No error message will be generated in logs, and user will be prompted to enter password again.
Resolution
Checking output of
# rpm -Vva | grep login
S.5....T /etc/pam.d/login
it will be visible that /etc/pam.d/login
was changed.When integrating Linux machines to be part of Active directory file /etc/pam.d/login
should not be edited as its corruption can lead to unpredictable results when users try to authenticate agains Active directory
Root Cause
Corrupted file /etc/pam.d/login
by editing it during Active Directory integration.
Diagnostic Steps
After entering username and password the prompt cursor will blink for a few minutes and after that it will falls back to login prompt.No error messages will be generated to /var/log
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