Bug? Dropping host doesn't remove hostdata

On Mon, 2013-07-22 at 12:21 +0100, John Horne wrote:

I've started xymond_hostdata with the '--debug' option, but am not
seeing the '@@drophost' command being received. The main xymond log sees
the actual 'drop jhvm2' command though ('jhvm2' is the test host name).
So I am currently testing the above bit of code to see that it is
actually being reached.

Well I'm a bit stumped with this.

I have added several dbgprintf statements (which begin with 'JH:') to
both xymond.c and xymond_hostdata.c. I also modified tasks.cfg so that
xymond and xymond_hostdata started with the '--debug' option.

The log files show the command being received and sent to the xymon
channels. However, the hostdata.log does not show it being received.

*snip*

So the command is accepted by xymond and sent on, but not received by
xymond_hostdata.

Unfortunately (?) this IPC is controlled by semaphores, so seeing as to
why xymond_hostdata does not pick up the message may be difficult.

A ha! It all makes sense now... :) The root of this is actually a known
issue: drop commands not getting sent to the CLICHG channel, which is why
it only shows up here and not, say, xymond_rrd... xymond_hostdata is the
only built-in that uses this one.


It's patched in the Terabithia RPMs from last month, but it's not in the
release tarball yet. The attached file should resolve it for you; can you
verify?


HTH,

-jc