Re: [opensuse] How to quickly get Remote Data from another box? bash? http?
- From: G T Smith <grahamsmith@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 25 Sep 2008 13:53:27 +0100
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David C. Rankin wrote:
Listmates,
I have run into another challenge and I am trying to determine the proper and
most efficient way to get remote data to display on a local machine. Part of
what I want to do is to gather sensor data from remote machines for web display
on a server. I can think of 2 ways to do it, but neither seems like the "right"
way. For example what's best to retrieve the ls_sensor output from a box across
the lan or internet?
First attempt was to force remote execution of 'sensors' via ssh and redirect
the output to a file on the remote machine and rsync it back. On the remote
site you would have a script called 'rem_sensors':
#!/bin/bash
sensors > ~/tmp/savedsensors
exit 0
On the local machine, you would have 'get_sensors':
#!/bin/bash
rsync -av lanremotehost:~/tmp/savedsensors ~/tmp/host_snsr_data
rsync -ave ssh netremotehost:~/tmp/savedsensors ~/tmp/host_snsr_data
# and so on
The connection time is a bother, but with sshkeys, no interaction is required.
Next, I though I would just write a 3 line php script to execute sensors and
then suck it back to the local box over http with lynx -dump or with rsync. The
script on the remote is nothing but:
<?php
$SENS = sensors;
echo $SENS."\n";
?>
This option seemed like trying to kill a mosquito with shotgun. What are some
of the other ways you employ to get this type of script output back from a
remote host? I'm looking for something lightweight and fast -- aren't we all.
Any ideas would be greatly appreciated. Thanks.
err... IIRC nagios can do some of this monitoring stuff (though to call
it light is distorting the English dictionary somewhat)...
a possible alternative could be a simple script daemon on the target
machines to broadcast a data packet at regular intervals and receiver
daemon to monitor the relevant port and process the received data when
received.... have a look at the Perl IPC stuff for ideas .... doing this
with files is a bit clumsy (and probably a bit error prone)...
- --
==============================================================================
I have always wished that my computer would be as easy to use as my
telephone.
My wish has come true. I no longer know how to use my telephone.
Bjarne Stroustrup
==============================================================================
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- From: David C. Rankin
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