Why I cannot rlogin but can telnet?

[zhaogui]

Hi,
# rlogin myhost
No utmp entry.You must exec "login" from the lowest level "sh".
Connection closed.
But I can telnet to the same machine,why?

Thanks,

[S.K. Chan]

You got a corrupted /etc/utmp file. On the system that you're having problem, do this ..

# mv /etc/utmp /etc/utmp.bad
# touch /etc/utmp
# vi /etc/inittab
==> change the line that has
cons:123456:respawn ....
to
cons:123456:off .....
# init q
# vi /etc/inittab
==> change the previous line that you've edit back to what it was before ..
cons:123456:respawn ...
# init q

Now try to rlogin again.

[Victor_5]

check your /etc/services, /etc/inetd.conf and see your configuration about rlogin and telnet.

[SHABU KHAN]

Zhaoqui,

This is usually a utmp corruption ...

Null the utmp file

prompt# > /etc/utmp

Check out these threads ...

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xac6d7e990647d4118fee0090279cd0f9,00.html

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x637f37f45ef7d4118fef0090279cd0f9,00.html

Thanks,
Shabu

[U.SivaKumar_2]

hi,
try this also. exit from all your subshells .
#ps
only your login shell should be running.
now rlogin again.
get back with results.
regards.
U.SivaKumar

[zhaogui]

Yes, It did work. Thank you for your assistance. But I was wondering what is the root cause and why utmp can be corrupted?

Just curious, it seems "init q" only rereads inittab and it won't reboot the server, likewise for "inetd -c" which only rereads inetd.conf but doesn't restart inetd daemon.