[hobbit] big brother replacement

[Galen Johnson]

Aw...don't be cheap...go ahead and kick in the other $12...

-----Original Message-----
From: Sloan [mailto:joe at tmsusa.com] 
Sent: Friday, November 02, 2007 1:20 PM
To: hobbit at hswn.dk
Subject: Re: [hobbit] big brother replacement

Yes, but keep in mind that's $64 octal.

Joe

Josh Luthman wrote:
> So I take it that Joe has to Paypal Henrik $64 now?
>
> Please let me, and everyone else of course, know how the failover
> script works on Hobbit.  I'd be very interested in knowing the result
> to this!
>
> Thanks to all three of you!
>
> On 11/2/07, *Henrik Stoerner* <henrik at hswn.dk <mailto:henrik at hswn.dk>>
> wrote:
>
>     Hi Joe,
>
>     On Thu, Nov 01, 2007 at 03:20:12PM -0700, Sloan wrote:
>     > So, the $64 question: Is there anything in hobbit, or on the
>     horizon,
>     > which will allow hobbit to serve as a drop-in replacement for
bb,
>     > including the failover capability?
>
>     The BB "failover" script does two things: It makes the network
tests
>     run on the failover server if the primary BBNET server cannot be
>     ping'ed; and it enables alerts being sent from the failover server
>     if there is no connection from the failover server to the primary
>     BBPAGER server.
>
>
>     The network-test failover is fairly simple to do. I've attached
two
>     scripts here, both of which must run on the
backup/standby/failover
>     server:
>
>     1) failover.sh - goes in ~hobbit/server/ext/
>        Add a section to hobbitlaunch.cfg with
>
>           [failovercheck]
>             ENVFILE /usr/lib/hobbit/server/etc/hobbitserver.cfg
>             NEEDS hobbitd
>             CMD $BBHOME/ext/failover.sh 10.0.0.1 <http://10.0.0.1>
>     hobbitnet.mydom.com <http://hobbitnet.mydom.com>
>
>        "10.0.0.1 <http://10.0.0.1>" is the IP of your primary Hobbit
>     server,
>        "hobbitnet.mydom.com <http://hobbitnet.mydom.com>" is the
>     hostname (in the bb-hosts file) of the
>        primary network test machine.
>
>        What this does is that it queries the primary Hobbit server for
>     how
>        long ago the network tests were updated. If more than 7 minutes
ago
>        it deems the primary network test node to be DOWN, and flags
>     this via
>        the file $BBTMP/primarynetDOWN. If the network test update was
>     less
>        than 7 minutes ago, it removes the file.
>
>        This is then used by the other script, which replaces the CMD
>     in the
>        "[bbnet]" section in hobbitlaunch.cfg.
>
>     2) failovernet.sh - goes in ~hobbit/server/ext/
>        When this runs to do the normal network tests, it will check
>     for the
>        presence of the $BBTMP/primarynetDOWN file. If this file
exists, it
>        picks up the IP of the primary Hobbit server from the file, and
>        modifies the settings to report data to both the normal (local)
>        Hobbit server, and to the primary server. If the file does not
>     exist,
>        it will just run the network tests the normal way.
>        So to run this, modify the [bbnet] section in hobbitlaunch.cfg
and
>        change the CMD setting to "$BBHOME/server/ext/failovernet.sh"
>
>
>     The alert failover is different, because Hobbit doesn't have a
>     separate
>     BBPAGER server - alerts are sent from the same host that handles
the
>     Hobbit data collection and webpages. A solution to this has been
>     implemented for the next release, where the alerting module can be
>     distributed onto multiple servers, but only one of them will send
>     alerts
>     at any given time.
>
>
>     Regards,
>     Henrik
>
>
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>
>
>
>
>
> -- 
> Josh Luthman
> Office: 937-552-2340
> Direct: 937-552-2343
> 1100 Wayne St
> Suite 1337
> Troy, OH 45373
>
> Those who don't understand UNIX are condemned to reinvent it, poorly.
> --- Henry Spencer 


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