[GE users] SGE and TruCluster

Ron Chen ron_chen_123 at yahoo.com
Tue May 9 05:32:56 BST 2006


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I don't have experience with TruCluster, but sounds like it is
similar to the "hosts with NIC cards" issue, so see this HOWTO:

http://gridengine.sunsource.net/howto/multi_intrfcs.html

 -Ron


--- James Chamberlain <jamesc at exa.com> wrote:
> That's the very problem I've been working on, Rayson.  Any
> idea how to get 
> sge_execd to bind to the local IP?  I haven't seen an option
> for sge_execd 
> which lets me specify which IP to bind to, but have been
> trying to 
> investigate on the assumption that a facility to do this
> exists within 
> TruCluster.  SGE can't be the only thing affected by an issue
> like this.
> 
> Thanks,
> 
> James
> 
> On Mon, 8 May 2006, Rayson Ho wrote:
> 
> > May be you got everything working by now?? :)
> >
> > Anyway, I used to work with TruClusters a few years ago, and
> I
> > remember there are 2 IPs on each node (one is local to the
> node, and
> > one is to address the entire cluster). If you want to have
> an SGE
> > cluster running within the TruCluster, then you should tell
> each execd
> > to bind to the IP address that is local to its node.
> >
> > I think I need to read the TruCluster docs to refresh my
> memory :p,
> > but do let me know if you get any further...
> >
> > Rayson
> >
> >
> >
> >
> > On 5/5/06, James Chamberlain <jamesc at exa.com> wrote:
> >> Hi Fred,
> >> 
> >> Thanks for the feedback.
> >> 
> >> TruCluster is an interesting environment.  It seems to be
> set up for load
> >> balancing by default, with a single root filesystem shared
> amongst all its
> >> members.  Any changes you make on one node to most of the
> files in /etc
> >> immediately show up on all other nodes.
> >> 
> >> I'm hoping there may be a less drastic way around this than
> to patch the
> >> code.  I notice that inetd, ntpd, apache and other network
> services all are
> >> listening on the wildcard address on all nodes with no
> problem.  Sure, HP
> >> could have modified them all to be cluster aware, but I'd
> like to believe
> >> there's a way for unmodified apps to bind to the wildcard
> address, too.
> >> 
> >> Thanks,
> >> 
> >> James
> >> 
> >> On Fri, 5 May 2006, Fred L Youhanaie wrote:
> >> 
> >> >
> >> > Hi James,
> >> >
> >> > James Chamberlain wrote:
> >> >> Hi all,
> >> >>
> >> >> Does anyone know of a way to make sge_execd bind to a
> specific 
> >> interface?
> >> >> By binding to *:536, sge_execd is picking up the cluster
> IP address in a
> >> >> TruCluster (Tru64 UNIX) environment.  As a result, other
> nodes in the
> >> >> TruCluster say they can't start sge_execd because port
> 536 is already in
> >> >> use. For reference, I'm using SGE 5.3p7.
> >> >
> >> > I just had a look at the source, it appears that execd
> ultimately calls
> >> > cl_com_tcp_connection_request_handler_setup(), which in
> turn binds to the
> >> > 'wildcard' address.
> >> >
> >> > source/libs/comm/cl_tcp_framework.c:
> >> > =====================
> >> > int cl_com_tcp_connection_request_handler_setup(...)
> >> > ...
> >> >   /* bind an address to socket */
> >> >   ...
> >> >   serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
> >> >   ...
> >> >   if (bind(sockfd, (struct sockaddr *) &serv_addr, ...
> >> > =====================
> >> >
> >> > So, you will need to file an RFE, or patch it yourself!
> >> >
> >> > Cheers
> >> > f.
> >> >
> >> >
>
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