I administer a Linux Server with Red Hat 6.2 and yesterday, suddenly,
I cannot login in the console as root: after typing the password, the
system answer "Login incorrect". I can login as any valid user and
su, in the console and in the LAN terminals.
The error in the log is
"Jul 18 14:26:52 mail PAM-securetty[2701]: Error opening
/etc/securetty
Jul 18 14:26:56 mail login[2701]: FAILED LOGIN SESSION FROM (null) FOR
root, Error in service module".
The securetty is OK.
If I make a "ps" command, the list don't show any TTY number (only
"?").
If I make a "w" command, the list is correct, saying I'm at "pts/0"
tty.
Does anyone has any suggestion?