Date: 28 Nov 1998 16:02:41 -0000 From: woju@freebsd.ntu.edu.tw To: freebsd-questions@FreeBSD.ORG Subject: [help] system go semi-stop Message-ID: <19981128160241.17336.qmail@freebsd.ntu.edu.tw>
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Hi:
I've encounterd some strange problems running FreeBSD 2.2.7(X).
bbs.ee.ntu.edu.tw is a busy server running 2.2.7R, providing following
services:
bbs(telnetd): +200 users on line
gopherd
pop3d
httpd
ftpd
innd
named
...
The system goes well. However, somtimes, after uptime larger than 7 days or
so, the system went into "semi-stop" state.
At the moment while i am compose this mail, bbs.ee.ntu.edu.tw is in "semi-
stop" state, and it have went into the strage states several times.
In "semi-stop" state, console login is unavailable. When pressing Enter on
console, it didn't show login prompt again, just stop there. In the mean
while, httpd/smtpd/ftpd/innd also failed responsing. However, bbs(telnetd)/
gopherd/pop3d/named are still in normal state, providing services well.
bbs/gopherd/pop3d are chrooted-static-linked daemon, named is the standard
/usr/sbin/named (4.9.7-T1B).
After previous semi-stop state, i've modified the ftpd to static-linked bin,
to test whether dynamic-static relate to the situation. And the answer is
not sure according to the situation now --
ntubsd[woju]:~$ telnet bbs.ee.ntu.edu.tw smtp
Trying 140.112.18.32... (stop here)
ntubsd[woju]:~$ telnet bbs.ee.ntu.edu.tw ftp
Trying 140.112.18.32...
Connected to bbs.ee.ntu.edu.tw.
Escape character is '^]'.
(stop here)
Seems somewhat "better" than the dynamic-linked daemons(smtpd).
The problem is rather hard since console(& any other type, say, remote) login
isn't available, and don't know what's going on "inside".
Has anyone encountered similar situations? Any comment is welcome. Thanks.
- woju
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