Hi Mel, On 7 Nov 2008, at 23:57, Mel Chua wrote:
> Following up on Gary's emails and Michael's suggestion from last > week, I was playing around this morning with... > > http://wiki.laptop.org/go/Dsh > > ...and life looks pretty glorious. > > Why is this cool? Well, say you wanted to run the ps command on all > the machines in your /etc/dsh/machines file, which looks like this... > > [EMAIL PROTECTED] > [EMAIL PROTECTED] > > All you have to do is this: > > [EMAIL PROTECTED]:~$ dsh -Mac ps > > And you'll get this. > > [EMAIL PROTECTED]: PID TTY TIME CMD > [EMAIL PROTECTED]: 1166 ? 00:00:00 startx > [EMAIL PROTECTED]: 1185 ? 00:00:00 xinit > [EMAIL PROTECTED]: 1211 ? 00:00:02 ck-xinit-sessio > <...more entries from 18.85.49.113 go here> > [EMAIL PROTECTED]: PID TTY TIME CMD > [EMAIL PROTECTED]: 1549 ? 00:00:00 startx > [EMAIL PROTECTED]: 1566 ? 00:00:00 xinit > [EMAIL PROTECTED]: 1577 ? 00:01:31 python > <...more entries from 18.85.49.114 go here> > > To answer Gary's previous question, we're trying to do the third > option - option 2 as a special case of option 1. The example on the > dsh wikipage is a good simple example (running ps). > >> >> 1). Want to run some admin script on every XO. Perhaps you want to >> wipe the datastore and reboot, perhaps you want to trigger suspend >> and use administration ping to wake them up again repeatedly, etc. >> >> 2). Want to collect a set of data from every XO and look for >> anomalies/failures. This could be lists of buddies each is >> currently seeing, or AP each is seeing, cpu loads, free memory, >> dropped packets, packet collisions, etc. > >> You could see option 2 as a specific case of option 1, where you >> write a nice batch that collects and cleanly reformats all the >> spurious outputs you get from the various tools. I've updated the below wiki page with some of the bash tricks/scripts I've been using. No 3rd party tools needed, all it assumes is that you've made a public/private key pair and copied the public key over to all the XOs to automate authentication: http://wiki.laptop.org/go/Scripts_for_testing_multiple_XOs#Example_code The last example there shows a slightly more complicated script collecting a bunch of nicely formatted data for each XO. If you can tell me the numbers/fields you actually want to collect, I could make that a more useful script for you... Regards, --Gary _______________________________________________ Testing mailing list [email protected] http://lists.laptop.org/listinfo/testing
