Hi!
Few weeks ago I told you about a problem with server crash at Haroy school
(Norway). I still have problems with thw server. The problem is:
We have two servers. One application server (sirius) with LTSP and one
fileserver (tellus) with /home and samba
We use RedHat 7.3
Sirius, the LTSP server we have a dual AMD 1800+ MSI-mainboard with 1GB Ram.
Tellus, one AMD 1800+, Asus mainboard, 768MB ram
We use NIS and NFS to connect the two servers.
We have 18 workstations. About 50 % of the ws have 100Mbit NIC, the rest have
10Mbit.
Both servers have SMC Gigabit NIC, They are both connected to a SMC Gigabit
switch.
Everything works works OK, but sirius server crashes several times during a
day. I have tried to disable Mozilla, and I have tried to disable printing,
new and better fileserver (tellus), swapped the ram, upgraded the kernel to
2.4-18.3, but that did not help.
I have made several copies of /var/log/messages, but I can not find anything
significant.
However, when running in level 3, occasionally some konsoll messages occured
on the screen.
A few times on sirius: NFS server not responding
To day on sirius:
RPC: sendmsg returned error 22
nfs: RPC call returned error 22
At tellus at the same incident:
rejected NSM callback from 7f000001: 32771
(five lines with the same message)
rpcinfo -p localhost (on sirius after reboot) gave this:
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 32768 status
100024 1 tcp 32768 status
100021 1 udp 32769 nlockmgr
100021 3 udp 32769 nlockmgr
100021 4 udp 32769 nlockmgr
100007 2 udp 971 ypbind
100007 1 udp 971 ypbind
100007 2 tcp 974 ypbind
100007 1 tcp 974 ypbind
391002 2 tcp 32769 sgi_fam
100011 1 udp 695 rquotad
100011 2 udp 695 rquotad
100011 1 tcp 698 rquotad
100011 2 tcp 698 rquotad
100005 1 udp 32771 mountd
100005 1 tcp 32770 mountd
100005 2 udp 32771 mountd
100005 2 tcp 32770 mountd
100005 3 udp 32771 mountd
100005 3 tcp 32770 mountd
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
nmap localhost (on sirius) gave this:
Starting nmap V. 2.54BETA31 ( www.insecure.org/nmap/ )
Interesting ports on sirius (127.0.0.1):
(The 1544 ports scanned but not shown below are in state: closed)
Port State Service
22/tcp open ssh
25/tcp open smtp
111/tcp open sunrpc
515/tcp open printer
698/tcp open unknown
974/tcp open unknown
6000/tcp open X11
10000/tcp open snet-sensor-mgmt
32770/tcp open sometimes-rpc3
32771/tcp open sometimes-rpc5
Nmap run completed -- 1 IP address (1 host up) scanned in 1 second
It seems to me that the problem is related to the communication bethween the
two servers.
Can anyone help?
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