1
2
3

$ su root
Password: 
su: Module is unknown

1
2
3
4

# vim /var/log/secure
Apr 16 16:45:32 compute01 sshd[21311]: pam_unix(sshd:session): session opened for user vmuser by (uid=0)
Apr 16 16:45:34 compute01 su: PAM unable to dlopen(/usr/lib64/security/pam_tally.so): /usr/lib64/security/pam_tally.so: cannot open shared object file: No such file or directory
Apr 16 16:45:34 compute01 su: PAM adding faulty module: /usr/lib64/security/pam_tally.so

1

# ln -s /lib64/security/pam_tally2.so /lib64/security/pam_tally.so