yp_all RPC clnt_call (transport level) failure

Cause

At random times, a slave NIS server has a problem that causes ypbind(1M) to report ypserver not responding, and the machine must be rebooted. The syslog file contains the following:

Dec 14 07:11:03 rahab syslog: yp_all - 
RPC clnt_call (transport level) failure:
RPC: Unable to receive; An event requires attention

Action

As a workaround, increase the file descriptor limit in the yp startup script, /etc/rc2.d/S71rpc. Add this command to the script before ypserv is started:

ulimit -n 256