[hobbit] Creating a fake, or combination, client

[Gary Baluha]

On 11/6/07, Andy France <Andy at zespri.com> wrote:
>
>  Hi Martin,
>
> I do a similar thing with our Citrix servers, where I have a "Farm" host
> to hold a summary of the total number of connections across all servers.
>
> I do this by running a script from hobbitlaunch on the server, and summing
> up the results of the individual Citrix servers using hobbitdboard.  After
> parsing the results, I send a single message for the "Farm" host in the same
> format as the individual host messages and Hobbit magically makes the graph
> for me :-)
>

If you want to reuse the data in the existing RRD files, assuming a symlink
to them works as I previously described, you can probably just create a
script similar to below and have it output a dummy value.  The main purpose
of the script would then just be to associate a column with the dummy host,
that you can then build a graph for using existing RRD files.

It's not too flash, but here are all the bits and pieces which make it
> work.  I hope they may help you in making a similar script for a postfix
> farm.
>
>
> *BB-HOSTS ENTRIES :*
>
> 127.0.0.1       citrix-farm    # COMMENT:"Farm Totals" testip noconn
> noinfo notrends
> 192.168.1.101   citrix-01      #
> 192.168.1.102   citrix-02      #
>
> *SHELL SCRIPT* /opt/hobbit/bin/citrix-totals.sh :
>
> #!/bin/sh
>
> TFIL=/tmp/`basename $0`.$$
>
> /opt/hobbit/server/bin/bb localhost "hobbitdboard host=citrix-[0-9][0-9]
> test=citrix fields=msg" | gsed 's/\\n/\n/g' > ${TFIL}
>
> LINE=`grep -v 'users active' ${TFIL}`
>
> CSUM=`grep "users active" ${TFIL} | awk ' { sum += $1; } END { print sum;
> } '`
>
> if [ -z "${CSUM}" ]
> then
>         CSUM=0
> fi
>
> /opt/hobbit/server/bin/bb localhost "status citrix-farm.citrix green
> `date`
>
> ${CSUM} users active
>
>
> ${LINE}"
>
> rm ${TFIL}
>
> *HOBBITLAUNCH.CFG ENTRY:*
>
> [citrix-totals]
>         ENVFILE /opt/hobbit/server/etc/hobbitserver.cfg
>         NEEDS hobbitd
>         CMD /opt/hobbit/bin/citrix-totals.sh
>         LOGFILE $BBSERVERLOGS/logs/citrix-totals.log
>         INTERVAL 5m
>
>
> The paths for the binaries etc would obviously need massaging to suit your
> installation.  Good luck!
>
> Andy.
>
>  ------------------------------
> *From:* Ward, Martin [mailto:Martin.Ward at colt.net]
> *Sent:* Wednesday, 7 November 2007 1:11 a.m.
> *To:* hobbit at hswn.dk
> *Subject:* [hobbit] Creating a fake, or combination, client
>
>  Hi all,
>
> I am a newbie to Hobbit and have inherited a working system. I have a good
> idea of how it all hangs together but now I want to produce certain graphs
> and cannot figure out how.
>
> I have a cluster of mail servers that run Postfix; each of these clients
> is monitored within Hobbit. In the Trends link for each client I have graphs
> showing the various mail queues (incoming, deferred etc) and this data is
> stored in RRD files on the Hobbit server.
>
> Is there a way within Hobbit of creating a false or meta- client that can
> have a graph with data from all of these RRD files? Particularly I would
> like a graph that has all the incoming mail queue sizes on it with one line
> per server. I already have this information in lots of different RRD files
> but would like to have them all in one graph. I can create a graph outside
> of Hobbit to do this, but within the monitoring system it restricts the RRD
> files it will display data from to those in the data directory of the
> selected client (in the Trends link).
>
> I have tried creating a new client in the data files ans symbolically
> linking the other RRD files into its data directory, but cannot persude the
> graphs to appear in the trends web page.
>
> Thanks for your time,
>
> |\/|artin
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