[Planetlab-users] Node availability

[Hunter Hagewood]

At 11:22 AM 6/14/2004 -0700, Sean C. Rhea wrote:
>On Jun 14, 2004, at 11:05 AM, Neil Spring wrote:
>>I can get 260 nodes to run scriptroute, but that may be an overestimate 
>>of node availability because a few of these hosts are running my code 
>>even though I can't log in.  It looks to me that codeen 
>>http://codeen.cs.princeton.edu/status/ has 150+ hosts participating 
>>(though I believe they're more interested in having all sites than having 
>>all nodes; I'm sure Vivek and crew would have more nodes than I do if 
>>that was a goal).
>
>FYI, I ignore Internet2-only machines, and I have Bamboo/OpenHash running 
>on about 195-205 hosts at any given time these days.  The other day I got 
>230 or so up, but that's the most I've ever seen.
>
>Sean
>--

Just another contribution for those maintaining widely deployed services.

I generally do my breakdown for IBP installations in the following manner 
(based on the  https://www.planet-lab.org/db/nodes/production_hosts.php 
list) -

TOTAL NODES:    349
FAILED SSH:           31        (could not detect SSH service)
FAILED LOGIN:        23 (overloaded machine, offensive key, permission 
denied, etc...there's even a couple that will ask for a pw)
FAILED IBP:            48       (could not detect IBP depot)
IBP OK:                 255     (IBP up and running)

This includes the I2 nodes. The reason the numbers add up to more than 349 
is because IBP somehow survived on nodes that I've lost login access to :)

I really appreciate Sean, Neal, and Mic sharing their info. It helps guide 
expectations.

hunter


-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Hunter Hagewood
Assistente GTVD2                                http://www.natalnet.br/~gtvd
Rede Nacional de Pesquisa e Ensino              http://www.rnp.br
Logistical Network Testbed Administrator        http://loci.cs.utk.edu
University of Tennessee                 http://www.utk.edu