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dialup churn in process

daemon@ATHENA.MIT.EDU (Mark W. Manley)
Wed Dec 30 12:03:29 2009

Date: Wed, 30 Dec 2009 12:03:20 -0500 (EST)
From: "Mark W. Manley" <mmanley@MIT.EDU>
To: Jonathan D Reed <jdreed@mit.edu>, Oliver Thomas <othomas@mit.edu>
cc: ops@mit.edu, release-team@mit.edu
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Hello all,

To keep everyone abreast of the churn in the athena.dialup pool, I'm in 
the process of decommissioning three of the eight Suns to be reclaimed 
into the Linux pool.  Those are:

  all-night-tool
  no-knife
  scrubbing-bubbles

The first is already off and I will power off the other two this 
afternoon, now that two days have passed since I have nologin'ed them. 
I'm in the process of removing them from the dialup name pool so that it 
will stop knowing about these three in general.

I have set up two of the four hypervisors in OC11 where the new dialups 
will live and breathe freely.  We're in the final stages now of getting 
them flying.  I should have the other two in place by the end of next 
week.  If all goes well, I should have the replacements for these first 
three dialups in place by the end of today.  Again, they will *not* be in 
the athena.dialup pool, so users can't just accidentally fall into them by 
going to that name.  They can, however, wander into them by deliberately 
going to them directly or by going to the soon-to-exist linux.dialup name, 
which will run in parallel.  If people deliberately go to these, I kinda 
feel like they can handle a Linux environment (I'll update their motd 
accordingly), but I can also nologin these as well after they're built.  I 
have no real stake either way.

Linux.dialup will run for some time in parallel while we get the other 
hypervisors in place.  If, after a couple of weeks, there are no issues, 
we'll replace cvp, i90, and hotd with Linux counterparts, leaving the 
existing doa, bl5, and brym servers to remain for those wishing to 
continue using Suns until the demise of that platform.  At that point, 
I'd like to switch athena.dialup to point to the Linux servers rather than 
the Suns.

Sound like a plan?  I think so.  Yell if there are any questions or 
obvious errors.

-MM

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