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Old 03-25-2010, 03:33 AM   #1
simransab
LQ Newbie
 
Registered: Sep 2009
Posts: 23

Rep: Reputation: 15
do_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host


Hi,

Environment:
We have sun and linux servers, where the relationship is NIS master (sun server), sun servers send data to linux servers to process and applications run in linux.

Problem:
This morning, our NIS master server down (due to ram prob), and what happen is all the sun servers able to bind to NIS Slave, able to communicate to other sun and windows servers but not Linux servers.

Detailed Problem:
sun_server[sab]% rsh linux01
o_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host

sun_server[sab]% telnet linux01
Trying 10.x.x.x...
Connected to linux01.
Escape character is '^]'.
do_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host
YPBINDPROC_DOMAIN: Domain not bound

linux01 (Linux release 2.6.9-55.ELsmp #1 SMP Fri Apr 20 16:36:54 EDT 2007) (4)

login: sab
do_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host
YPBINDPROC_DOMAIN: Domain not bound
Password for sab:
Login incorrect
login: sabrina
do_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host
humYPBINDPROC_DOMAIN: Domain not bound
bdo_ypcall: clnt_call: RPC: Unable to receive; errno = No route to host
le
YPBINDPROC_DOMAIN: Domain not bound
Password for sab:
Login incorrect

It can't go into linux servers eventhough login and password i put is correct and having the above error. Between linux to linux, there is no problem. Once the NIS Master is up, the problem resolved.

Where is the prob, in Sun or Linux?
In Linux, how to make it able to failover to NIS slave?

I'm still new to all these server and network config in linux, appreciate your help.

Simransab
 
Old 04-02-2010, 11:03 PM   #2
codedr
Member
 
Registered: Feb 2007
Location: USA
Distribution: opensuse, slackware
Posts: 35

Rep: Reputation: 18
For many years, the default configuration for NIS (at least on Linux) is
to specify the domainname server by ipaddr/name. What is happening is
that the linux server needs to be configured for the slave server and/or
configured to broadcast for the server.

In your current configuration when you server goes down, the linux box
has no server to use.

I would check the man page for ypbind for your distribution for the
way to specify the nis slave server directly.
 
  


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