From: Software Groups (sfgroups@gmail.com)
Date: Mon Aug 07 2006 - 19:32:51 EDT
Hi Managers,
We have about 50 Solaris servers with NIS, autofs setup. We have this
setup working fine about 5 years.
Now the problem is on few servers, we are getting "NIS server not
responding" error message. This happens only from 10pm to 3am, the
problem lost about 10 minutes to 2 hours, after that all services
works fine. During daytime we are not having any problem.
All server running Solaris 8, NIS master server patch level
Generic_117350-27. NIS slave server patch level Generic_117350-33
One of the NIS client server, we ran shell script to ping other
server; during NIS problem time we got 100% ping package loss. We
opened ticket with network team; they checked the Cisco switch.
1. They didn't find any error message on the switch
2. Servers connected using VLAN
3. No firewall between servers.
Some servers we have two network interface, one for normal network
other one for backup network, ifconfig command show same mac address
for both interface (hme0, hme1). Network team said, it might be issue
with different mac address.
1. In syslog I didn't see any IP address conflict or network
connection UP/DOWN error message.
2. eeprom shows local-mac-address?=false
3. Server load is normal during that time.
4. NIS master server uptime is 183 days, client server uptime 30 to 50 days
I am looking for some troubleshooting steps, to resolve this issue.
1. Is this related to server patch level?
2. Why this problem occurs only in the night, at random time.
3. These servers running for years, last couple of months we install
onlu OS patche on these severs. Other than patch nothing changes on
this configuration.
4. If it is network switch issue, if they way to capture some debug
message on host side?
Thanks
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