[Linux-cluster] clustering NIS, incorrect return value of ypserv, ypxfrd init scripts

[linux-cluster at merctech.com]

I'm in the process of setting up a 2-node CentOS 5.2 cluster. Among other 
things, this cluster will act as an HA NIS slave.

The setup of the NIS service was fairly painless, except that some NIS init
scripts (ypbind, ypxfrd) incorrectly set a return value of "0" in response to
the "status" option, regardless of the actual daemon status.

This appears to be a bug in the init scripts--they don't use the return value 
from the /etc/init.d/rc.d/functions "status" check as their exit value.

Here's an example from /etc/init.d/ypserv:

---------------------------------------------------------
# See how we were called.
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  status)
        status ypserv
        ;;
  restart|reload)
        stop
        start
        ;;
  condrestart)
        if [ -f /var/lock/subsys/ypserv ]; then
            stop
            start
        fi
        ;;
  *)
        echo $"Usage: $0 {start|stop|status|restart|reload|condrestart}"
        exit 1
esac

exit $RETVAL
---------------------------------------------------------


Note that /etc/init.d/ypserv exits with the value of $RETVAL, which the "status"
block leaves unset (hence, 0). This means that if the ypserv daemon is dead,
then clurgmgrd will never detect the error and will not restart or relocate the
service.


The simple fix (in my case) was to add:
	RETVAL=$?
after the "status" check.

Perhaps this should be submitted as a bug report to Redhat.



-----
Mark Bergman    Biker, Rock Climber, Unix mechanic, IATSE #1 Stagehand

http://wwwkeys.pgp.net:11371/pks/lookup?op=get&search=bergman%40merctech.com