[Nagiosplug-devel] [ nagiosplug-Bugs-1891143 ] popen test runs "forever" (workaraound)

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Bugs item #1891143, was opened at 2008-02-11 13:43
Message generated for change (Comment added) made by tonvoon
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Category: Compilation
Group: Release (specify)
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Henry78 (henry78)
Assigned to: Nobody/Anonymous (nobody)
Summary: popen test runs "forever" (workaraound)

Initial Comment:
Using nagios-plugins-1.4.11 I run a plain ./configure, which is stuck at "checking for redhat spopen problem".

The part getting stuck is the child_test, which takes 10 seconds to fail. As you see from the Makefile in the dir config_test the caller script (run_test) invokes the child_test 10 000 times.

I attached an starce output of a manual child_test run. If anyone guides my (I'm no big C programmer), I'd be welcome to debug/track down this problem further. 

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>Comment By: Ton Voon (tonvoon)
Date: 2008-02-11 15:43

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Henry,

Does this answer your questions? http://nagiosplugins.org/node/7

Ton

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Comment By: Sascha Runschke (srunschke)
Date: 2008-02-11 14:29

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The type of check cannot be changed, since the Redhat spopen bug evolves
around a futex race condition in combination with the ISC DNS libraries.
Those are linked with bind, nslookup, dig and the like. If you change the
actual check binary, then the check itself is foobar.
It'll be better to implement a "pre-check" if DNS resolving is possible at
all and bail out if not.

S

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Comment By: Henry78 (henry78)
Date: 2008-02-11 14:04

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Finally had a look into the code of child_test, and of course it take
forever, it's running nslookup from there, and nagios isn't attached to the
internet. So i changed (removed/added comments) the executed command to
'date' (hope the test still does what it should do), now the test runs in a
reasonable time.
However, imho the test should be fixed to run something
internet-independent. So leave the bug open.

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