Just putting a question out there... has anyone actually used multicast to build their nodes successfully? If not, it seems somewhat silly for us to claim we have support for it. I don't even understand how it would work...
On a non-multicast build, the script partitions the drive prior to the synchronization... obviously. Now all I've been able to do is *attempt* a multicast build, as it's never worked on any hardware I've tried yet... but the strange thing is that it appears to be attempting to listen for a multicast stream before it ever partitions the disk.
Yes. It does _everything_ but boot using multicast, if you're doing a multicast install. As in, after the node boots, it receives the boel binaries tarball, autoinstall script, image, override directories -- everything -- via multicast.
Granted, I've never seen it work yet, so I'm probably just ignorant of how it's supposed to work... but maybe someone can enlighten me?
It works for me. ;-)
Have a look at the FAQ and "HOWTO Use Flamethrower for Muliticast Installs" sections of this document, and see if that helps: http://www-unix.mcs.anl.gov/~finley/systemimager-manual-3.2.0.pdf
That being said, 3.2.0 is the first _official_ SystemImager release to support it, and the documentation is still catching up.
Why does SIS multicast not work on the same hardware that Ganglia multicast *does* work on?
thx-
Jeremy
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