[hobbit] Two DNS lookups for a server but one fails

[Ward, Martin]

Thanks for that Henrik.

I took a copy of my existing 4.2.2 code, overwrote the bbnet directory with the SVN source and recreated the c-ares subdirectory in the bbnet subdir by untar-ing c-areas.1.6.0.tar.gz and renaming the c-ares.1.6.0/ subdirectory to c-ares/

Having done this the compilation failed as it couldn't find a library for the clock_gettime() function. I found that adding "-lrt" to the "LDAPLIBS" variable in the Makefile in the top level source directory solved the problem, but this may not be the right place to put it. A little more fiddling was required because my SSL libraries are not located in the standard library locations and I hate having to set up LD_LIBRARY_PATH everywhere, so my LDAPLIBS and SSLLIBS ended up looking like:

SSLLIBS = -L/usr/local/ssl/lib -R/usr/local/ssl/lib  -lssl -lcrypto
LDAPLIBS = -L/usr/lib -lldap  -lrt

After compiling it successfully I copied bbtest-net into the server/bin directory and restarted xymon. Apart from a timeout issue with a local script, which I believe is a config issue on my part, things look like they are working fine now. The double DNS lookups are working OK and I am getting remote port connection tests working so that's good or me.

Thanks Henrik!

|\/|artin


> -----Original Message-----
> From: Henrik "Størner [mailto:henrik at hswn.dk] 
> Sent: 12 January 2009 11:50
> To: hobbit at hswn.dk
> Subject: Re: [hobbit] Two DNS lookups for a server but one fails
> 
> 
> 
> OK, it seems that the bugfix I added in Xymon 4.2.2 had some 
> nasty side-effects.
> 
> I have started work on a 4.2.3 maintenance tree in 
> Subversion, and there is a new version of the DNS code in it 
> currently. 
> http://hobbitmon.svn.sourceforge.net/viewvc/hobbitmon/branches/4.2.3/
> 
> You can try out this code (download it from the link above), 
> but it also involves a change from C-ARES 1.2.1 -> 1.6.0, so 
> you will have to re-run the configure script to perhaps pick 
> up a new runtime library that the new C-ARES requires (librt).
> 
> I ran it for most of Friday afternoon at work with no obvious 
> bad effects, so I hope it will work better than the current code.
> 
> In 
> <1F7B01020EC4D04DA17703634B9E888E09BFE6DF at ULPGCTMVMAI003.EU.CO
> LT> "Ward, Martin" <Martin.Ward at colt.net> writes:
> 
> >Also I am unsure why it's even reaching this part of the code when I 
> >specif= ied --no-ares on the command line.
> 
> Xymon still uses ARES to perform the "dns" tests for specific hosts; 
> the standard resolver library does not allow you to specify 
> what DNS server to query. So the --no-ares option only has 
> effect on the DNS lookups Hobbit performs to determine the IP 
> of the hosts it is testing, it does not affect the specific 
> testing of a DNS server.
> 
> 
> Regards,
> Henrik
> 
> 
> To unsubscribe from the hobbit list, send an e-mail to 
> hobbit-unsubscribe at hswn.dk
> 
> 
> 


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