On 12/12/06, Bhupendra Patel <mukhi65 at yahoo.com> wrote:
I have requested for unsubscribe my email list, but i am still getting lost email about hobbit. please take me off the list.
Your email is not relevant to the original subject. I just changed it. Send an empty email to hobbit-unsubscribe at hswn.dk to unsubscribe
Thanks.
--- Henrik Stoerner <henrik at hswn.dk> wrote:
On Thu, Dec 07, 2006 at 11:27:08PM +0100, Stef Coene wrote:
On Thursday 07 December 2006 23:01, Trent Melcher wrote:
Has anyone thought about or implemented a configuration database backend for hobbit, primarily a database replacement for the hobbit-clients.cfg and hobbit-alerts.cfg to start....these are a couple that I would like to buils a webfront to and be able to give limited access to users so they could modify thresholds and alerting capabilities when needed.
I did this about 4 years back for Big Brother using Informix, I was able to setup thresholds and a replacement for the bb-host file inside a couple tables in a database. However back then Big Brother was mostly shell scripts and flat files for all its configuration. So adding hooks into it for talking to a databse was easy. With hobbit its all compiled code and Im not sure where to start, plus I don't have access to an Informix database or the API's for it anymore so Im looking at mysql and its api's for writing code in C.
We are thinking about using mysql for storing trends and status messages.
Be careful with the status messages, at least if you want to store the current status in a DB. Historical status messages - those that are currently stored in the histlogs/ directory - are OK, but for the current status log I think that the overhead associated with updating each status log in a DB every 5 minutes will be very high. And the number of times you'll actually be retrieving these data will probably be very small.
Copying the historical statuslogs (or the current ones) is very easy to do with an extra Hobbit worker module hanging off the "status" or "stachg" channels. You do not need to make any modifications to Hobbit itself - you basically run "hobbitd_channel --channel=stachg MYDBPROGRAM" and your program is fed all of the status messages on it's STDIN.
As for the trends data, I believe there are some patches to the rrdtool library that will let you store the RRD files in a DB. Check the rrd-users mailing list.
My personal favourite for a DB backend would be SQLite, since this eliminates all requirements for an external DB ressource. You don't want your monitoring to stop working when the DB becomes inaccessible.
Regards, Henrik
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