On Fri, Oct 08, 1999 at 02:19:47AM +0100, Mark Brown wrote: > On Thu, Oct 07, 1999 at 11:28:49AM +1000, Drake Diedrich wrote: > > > Another change is the /etc/alternatives/pvm-rsh alternative link. PVM > > can now use ssh (and krsh presumably) to initiate pvmd connections. > > Could you perhaps change the name to "beowulf-rsh" or something so that > all the clustering libraries could use it please? I have been meaning > to get around to implementing a similar thing for MPICH (especially > since I now have a wishlist bug for it) and I imagine LAM could use it > too.
I was hoping the remote shells would provide the alternatives themselves, and I could then point pvm-rsh to that. I was expecting the rsh-client breakup to include a remote-shell alternative. Note that there is no /usr/bin/pvm-rsh file. It's /usr/lib/pvm3/bin/rsh. If you use it you'll need to add a dependency on pvm no matter which directory I put it in. You probably don't want to do this. I don't even like doing it, I just got desparate. :) I suggest reassigning the bug to rsh-client and ssh so that at least it's not counted against you. Eventually they'll cave in and make us a link. If you aren't content to wait what I recommend is that MPICH and LAM each create similar alternatives pointing to /usr/bin/rsh for now. When the remote shells start providing one of their own you can then either switch to the new alternative link or change the default from /usr/bin/rsh to /usr/bin/remote-shell (or whatever the link point is). Keeping your private *-rsh will make it possible for PVM and MPICH to use different default remote-shells if the admin overrides /etc/alternatives/*-rsh. What I did was modify the internal pathname of the rsh binary and stick the following in the postinst and prerm files. Modify accordingly. Note that creating a link to /usr/bin/rsh in pvm's files should be a policy violation. If they get wind of this it will probably become one, just refile those against rsh-client and ssh as well. :) pvm.postinst ------------ #!/bin/sh set -e update-alternatives --install /usr/lib/pvm3/bin/rsh pvm-rsh /usr/bin/rsh 10 #DEBHELPER# pvm.prerm --------- #!/bin/sh set -e update-alternatives --remove pvm-rsh /usr/bin/rsh #DEBHELPER#
