RSH scaling problems...
lindahl at keyresearch.com
Tue Dec 17 08:42:35 PST 2002
On Tue, Dec 17, 2002 at 06:09:07AM -0500, Jeff Layton wrote:
> So, even if you patch the kernel to give you more than 256 ptys,
> you also need to patch rcmd() to use a wider range of ports (at least
> in theory).
> Any comments?
rcmd must use low ports, for security reasons.
ssh has a mode in which it can use a high port. That's how the
370-node FSL system did it in 1999. This technique also worked OK on
Cplant at 1200 nodes.
More information about the Beowulf