[249] in Kerberos
Too many zephyr kerberos tickets
daemon@TELECOM.MIT.EDU (mar@ATHENA.MIT.EDU)
Thu Nov 5 15:00:50 1987
From: mar@ATHENA.MIT.EDU
To: zephyr-comments@ATHENA.MIT.EDU, kerberos@ATHENA.MIT.EDU
I just noticed that I have four identical zephyr.zephyr kerberos
tickets:
Ticket file for principal mar@ATHENA.MIT.EDU
Issued Expires Principal
Nov 5 11:01:10 Nov 5 19:01:10 krbtgt.ATHENA.MIT.EDU@ATHENA.MIT.EDU
Nov 5 11:01:13 Nov 5 19:01:13 rvdsrv.eurydice@ATHENA.MIT.EDU
Nov 5 11:01:51 Nov 5 19:01:51 rvdsrv.paris@ATHENA.MIT.EDU
Nov 5 11:02:17 Nov 5 19:02:17 zephyr.zephyr@ATHENA.MIT.EDU
Nov 5 11:02:17 Nov 5 19:02:17 zephyr.zephyr@ATHENA.MIT.EDU
Nov 5 11:02:17 Nov 5 19:02:17 zephyr.zephyr@ATHENA.MIT.EDU
Nov 5 11:02:17 Nov 5 19:02:17 zephyr.zephyr@ATHENA.MIT.EDU
Nov 5 11:02:39 Nov 5 19:02:39 discuss.charon@ATHENA.MIT.EDU
Nov 5 11:02:48 Nov 5 19:02:48 rvdsrv.helen@ATHENA.MIT.EDU
Nov 5 11:02:50 Nov 5 19:02:50 discuss.menelaus@ATHENA.MIT.EDU
Nov 5 11:03:00 Nov 5 19:03:00 pop.e40-po@ATHENA.MIT.EDU
Nov 5 11:03:06 Nov 5 19:03:06 rvdsrv.menelaus@ATHENA.MIT.EDU
Nov 5 11:03:01 Nov 5 19:03:01 discuss.odysseus@ATHENA.MIT.EDU
Nov 5 11:03:25 Nov 5 19:03:25 rvdsrv.theseus@ATHENA.MIT.EDU
Nov 5 11:03:21 Nov 5 19:03:21 discuss.bloom-beacon@ATHENA.MIT.EDU
Nov 5 11:03:35 Nov 5 19:03:35 discuss.matisse@ATHENA.MIT.EDU
Nov 5 13:44:56 Nov 5 19:04:56 sms.sms@ATHENA.MIT.EDU
Nov 5 14:01:12 Nov 5 19:01:12 rvdsrv.euterpe@ATHENA.MIT.EDU
On trying to duplicate this, I discovered that I usually get two
identical ones, but I couldn't get four again. I start up zephyr with
this line in my .login:
(zwgc; zlogin; zinit; zcheckmail; znol | zwrite mar) > /dev/null &
My guess is that several programs are trying to get zephyr tickets at
the same time. They each see that there are no zephyr tickets in my
ticket file, and each one fetches a ticket and appends it to the file.
The number of duplicates is determined by how many programs try to get
a ticket before the first one succeeds.
This isn't really a problem, but an interesting race condition.
-Mark
