Re: [hobbit] Re: centralized configuration - external scripts

[Alan Sparks <asparks (at) doublesparks.net>]

Cayo de Moraes wrote:
> nobody knows anything about it?
>
> any help would be appreciated.
>
>
>
> 2009/11/18 Cayo de Moraes <camorae (at) googlemail.com
> <mailto:camorae (at) googlemail.com>>
>
>     Hi guys,
>
>     just like we use the file hobbit-clients.cfg to manage DISK, CPU,
>     PROCS etc. for each client, we would like to have a centralized
>     configuration for the external scripts.
>
>     So far I tested two things:
>
>     1)  Server-side check:
>     bb-hosts entry (for the external scripts), additional code entry
>     in the external scripts (for bbhostgrep), etc.
>
>     Problem: this seems to work only with "Network checks" which will
>     be done from Server-side to check the clients, like advanced
>     ftp/ping/ssh script etc. It doesnt work for scripts, wich have to
>     run on the clients, like mysql checks.
>
>
>     2) ONHOST:
>     the entry ONHOST in the hobbitlaunch.cfg.
>
>     Problem: this is not working for me... i tought with this entry
>     Hobbit would be able to issue an order to the client and then
>     execute the command in the client, but when looking into the
>     logfiles, i see that Hobbit have to find the external script on
>     the Hobbit-Server (i think its the same result as in Problem 1). I
>     tought it would work as a "bb-bbextab"... but the MAN Pages says
>     it has to be configured on the server....
>
>
>
>     So guys, do i have another way to manage this external scripts
>     (which have to be run on the clients) in the Hobbit-Server?
>
>     TIA,
>     Cayo
>
>

If you want to configure script running on the clients (remotely) from
the Hobbit server, I think you have two options.  Both will require a
little bit of coding in your client side.

1) You can arrange (maybe write a small script to do it periodically) to
run something like:
$BB $BBDISP "config myconfigfile"
(see the man page for the "bb" command).  The idea is to add custom
configurations to this "myconfigfile" in your server/etc directory, and
use this command on the clients to update a local copy onto the client. 
You script can then parse this as desired.

2) You can use the client-local.cfg on the server to send out custom
configurations, as well.  For a particular hostname or class entry in
there, you can add a line with some parameters... say something like:

[myhost]
log:/var/log/messages:10240
myconfig:something=1280 somethingelse=foo

Note that the client will pull the first matching block from
client-local.cfg back when it contacts the server to send test results. 
The client-local block will get saved on your client in a file under
$BBTMP, in a file named like "logfetch.hostname.cfg."
You could use this mechanism to get configurations to your client, by
looking for your lines in this file (starting with "myconfig:"), and
parsing it for your configurations.

Hope this gives you some starting ideas.
-Alan