ORBIT-USER: How to use ruby fiile containing deftopology command?

Arinto Murdopo arinto at gmail.com
Sun Feb 11 05:38:42 EST 2007 

Dear all,

How to use the ruby file containing the defTopology command? Do I need to
put the file in opt/nodehandler-4.1.2/repository/system/topo/ ?
Or I just use nodehandler4 command to running this script? When I use
nodehandler4, the process stopped at INFO Experiment: load clickSampleTopo

arinto at console.grid:~/VirtualMobility/OtherScript$ nodehandler4
clickSampleTopo
Using logfile /etc/nodehandler/nodehandler_log.xml
DEBUG oconfig: Testbed name: 'grid'
 INFO init: NodeHandler Version 4.1.2 (1272)
 INFO init: Experiment ID: grid_2007_02_11_05_37_18
 INFO ExecApp: Starting application 'commServer':
/opt/nodehandler-4.1.2/sbin/commServer
--iface eth1 -l /tmp/commServer-grid_2007_02_11_05_37_18.log
 INFO Experiment: load system:exp:stdlib
 INFO prop.resetDelay: resetDelay = 180:Fixnum
 INFO prop.resetTries: resetTries = 1:Fixnum
 INFO Experiment: load clickSampleTopo

Thank you

arinto
On 10/26/06, Max Ott <max at semandex.net> wrote:
>
> Cute (or not), the message which is trying to tell you that your
> topology definition is not correct is throwing an exception.
>
> I fixed that, so please try again. It still won't work for your
> definition, but it should give you a more meaningful error message,
> something along the lines of:
>
> Expected array with 2 elements denoting x and y, but found [1..20]
>
> Please verify that indeed you get that.
>
> Now to fix the problem, your topology definition should look like:
>
>   defTopology('my:topo:grid', [1..20,1..20])
>
> Also see
>
> /opt/nodehandler-4.1.2/repository/system/topo/all.rb
>
> which means, you will achieve the same using 'system:topo:all'.
>
> -max
>
>
> On 10/26/06, Vanessa Frias-martinez <vf2001 at cs.columbia.edu> wrote:
> >
> > when running Max's imageNodes4 i get an error in some rb files...
> >
> > Imaging nodes: 'my:topo:grid' with image
> > 'tmp/node-1-2-2006-10-19-18-52-55.ndz'
> >  WARN: init'-s flag' flag is depreciated, use '-k' instead
> > Using logfile /etc/nodehandler/nodehandler_log.xml
> > DEBUG oconfig: Testbed name: 'grid'
> >  INFO init: NodeHandler Version 4.1.2 (1272)
> >  INFO init: Experiment ID: grid_2006_10_25_10_43_12
> >  INFO ExecApp: Starting application 'commServer':
> > /opt/nodehandler-4.1.2/sbin/commServer --iface eth1 -l
> > /tmp/commServer-grid_2006_10_25_10_43_12.log
> >  INFO Experiment: load system:exp:stdlib
> >  INFO prop.resetDelay: resetDelay = 180:Fixnum
> >  INFO prop.resetTries: resetTries = 1:Fixnum
> >  INFO Experiment: load system:exp:imageNode
> >  INFO prop.nodes: nodes = "my:topo:grid":String
> >  INFO prop.image: image = "tmp/node-1-2-2006-10-19-18-52-55.ndz":String
> >  INFO prop.pxe: pxe = "1.2.0":String
> >  INFO Topology: Loading topology 'my:topo:grid'.
> > FATAL run: Exception: undefined local variable or method `n' for
> > #<Topology:0xa796e9c8> (NameError)
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:164:in `addNodes'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:185:in `addNodes'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:184:in `each'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:184:in `addNodes'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:145:in `add'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:128:in
> `initialize'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:46:in `new'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:46:in `create'
> >         /opt/nodehandler-4.1.2/lib/handler/handlerCommands.rb:28:in
> > `defTopology'
> >         ./my_topo_grid.rb:1
> >         (eval):20:in `require'
> >         (eval):20:in `getProc'
> >         /opt/nodehandler-4.1.2/lib/handler/oconfig.rb:132:in `call'
> >         /opt/nodehandler-4.1.2/lib/handler/oconfig.rb:132:in `load'
> >         /opt/nodehandler-4.1.2/lib/handler/topology.rb:22:in `[]'
> >         /opt/nodehandler-4.1.2/lib/handler/handlerCommands.rb:66:in
> > `defNodes'
> >         /opt/nodehandler-4.1.2/repository/system/exp/imageNode.rb:13
> >         (eval):20:in `require'
> >         (eval):20:in `getProc'
> >         /opt/nodehandler-4.1.2/lib/handler/oconfig.rb:132:in `call'
> >         /opt/nodehandler-4.1.2/lib/handler/oconfig.rb:132:in `load'
> >         /opt/nodehandler-4.1.2/lib/handler/experiment.rb:38:in `load'
> >         /opt/nodehandler-4.1.2/app/nodeHandler.rb:179:in `run'
> >         /opt/nodehandler-4.1.2/app/nodeHandler.rb:622
> >  INFO ExecApp: Application 'commServer' finished
> >  INFO run: Experiment grid_2006_10_25_10_43_12 finished after 0:8
> > vanessa at console.grid:~
> >
> > On Wed, 25 Oct 2006, Haris Kremo wrote:
> >
> > > Vanessa,
> > >
> > > Below is a message from Max about more robust way of imaging the
> nodes.
> > >
> > > Hope it helps,
> > >
> > > H.
> > >
> > > ---------- Forwarded message ----------
> > > From: Max Ott <max at winlab.rutgers.edu>
> > > Date: Oct 7, 2006 9:34 PM
> > > Subject: ORBIT-USER: Improved imaging procedures
> > > To: orbit-user at winlab.rutgers.edu
> > >
> > >
> > > Folks,
> > >
> > > I installed a new version of the nodehandler with which I now
> > > regularly image the entire grid (or better the approx. 385 nodes which
> > > boot up properly) in about 16 minutes with almost half of the time
> > > spent coaxing the nodes to boot up.
> > >
> > > As I haven't tested much more than just imaging and also haven't
> > > installed the new agent on anything but the PXE image, the old
> > > nodehandler is still there and the new one is called 'nodehandler4'.
> > >
> > > Similarly, the new imaging command is called 'imageNodes4'
> > >
> > > $ imageNodes4 -h
> > > Usage: /usr/bin/imageNodes4 [topology] [image_file_path]
> > >    Example:
> > >        /usr/bin/imageNodes4 system:topo:all tmp/image-
> tridencom-test.ndz
> > >
> > > It takes two optional arguments, a topology and the image name.
> > >
> > > Right now, 'topology' is just a fancy way for defining the list of
> > > nodes to use, but will in the future include ways to define the
> > > additional noise injection settings to get us closer to a real
> > > topology.
> > >
> > > There is a new command 'defTopology' (http://tinyurl.com/pcqo8) which
> > > is almost identical to the way 'defNodes' defines the list of nodes. A
> > > topology can be saved in its own file and referenced from a defNodes
> > > command.
> > >
> > > For instance, the repository contains a topology containing all nodes
> > > in the grid. It's URI is 'system:topo:all' and is simply defined as:
> > >
> > > defTopology('system:topo:all', [1 .. OConfig['X_MAX'], 1 ..
> OConfig['Y_MAX']])
> > >
> > > Now let's assume you want to use two opposing corner nodes and we hard
> > > code the grid size to 20x20 (not that I would ever condone hard
> > > coding). Create a file 'my_topo_diagonal.rb' and add the following
> > > line:
> > >
> > > defTopology('my:topo:diagonal', [[1,1],[20,20]])
> > >
> > > Now, you can image those nodes with your image through:
> > >
> > > $ imageNodes4 my:topo:diagonal my_image.ndz
> > >
> > > The 'defNodes' command in the new nodehandler will accept a topology
> > > URI as the second argument (selector), but we'll announce that when we
> > > fully switch over.
> > >
> > > Also, please don't use a block with the 'defTopology' command. I
> > > realized last night that the installed version doesn't properly
> > > support that - and I don't want to install the fix without testing it
> > > - not sure when that will happen. In other words, the fancy 'circle'
> > > example in the wiki page doesn't work, yet. The normal array
> > > definitions do work, though.
> > >
> > > There is still the odd node which sometimes goes deaf during imaging
> > > and the current imaging script doesn't detect that and as a result
> > > won't finish, but it happens much less frequently than before and I
> > > only saw it for > 350 nodes. Hopefully, your experience is similar.
> > >
> > > Finally, please note that the default topology behavior is
> > > 'non-strict', meaning the nodehandler will remove a node from a
> > > topology or node set if the node doesn't check in after one additional
> > > reboot. The nodehandler will print a warning message but will then
> > > continue.
> > >
> > > So please check if the nodes skipped are important to you.
> > >
> > > WARN Giving up on node n_19_6
> > >
> > > Let me know if you have problems and I'll look into it. Don't forget
> > > to add the experiment ID to any bug report.
> > >
> > > Thanks,
> > >
> > > -max
> > >
> >
>
>
> --
> Dr. Max Ott
> Research Program Leader - Network and Pervasive Computing, NICTA Australia
> Founder & CTO, Semandex Networks
> Research Professor, WINLAB, Rutgers University
>
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