Apache refuses to start (due to Parallels?) and virtual hosts problem

[Markus Ruggiero]

I have a weird problem with Apache2, virtual hosts, Leopard and  
Parallel (and maybe other things)

Environment: Leopard, upgraded from Tiger with option "Archive and  
Install, transfer user and network settings" on MacBook Pro with 4G of  
RAM

After reboot of Leopard I can do http://localhost and everything  
works. However the upgrade process did not reestablish the virtual  
host config I had on Tiger. OK, no problem, I added the hosts to /etc/ 
hosts and enabled virtual hosts in /etc/apache2/httpd.config and /etc/ 
apache2/extras/httpd-vhosts.config). Unfortunately none of my hosts  
are found. However I can prove that the config files are read because  
the first virtual host has a directory that lies outside of the  
default /Library/WebServer/Documents - and these files are being  
served. No matter what hostname I enter in Safari, it is always that  
first-in-the-file host that is serving. This is clearly an indication  
that Apache does not find a virtual host corresponding to the used  
host name. No problem, must be some typo so I started playing with the  
vhosts file and restarting Apache (both with the Sharing Prefs pane as  
well als from the commandline with apachectl). Now in the System.log I  
see weird entries for each restart that  some Key to lanch demon is  
not known (see below). I had to interrupt my trying to do some "real"  
work. Therefore I booted up WindowsXP within Parallels (network set to  
direct connect mode to ethernet adaptor). Later I came back to Apache  
and all of a sudden Apache refused to start at all (again see copy  
from log further down). Shuting down Parallels does not help, only a  
reboot cleared things. Apache starts and restarts somewhat cleanly but  
again refuses to start after Parallels has run. Oh, and I still don't  
know why my virtual hosts don't work.
Anyone knows what is going on here? How can I debug the Apache startup  
failure? What is launch demon complaining about? And how can I debug  
virtual hosts?

Here is one set of log entries for an Apache startup. The only  
difference between a start and a failed start are the two lines at the  
end.

Nov  8 08:42:21 vmtellswin1 kernel[0]: IOMemoryDescriptor: attempt to  
create 32b virtual in 64b task, use ::withAddressRange()
Nov  8 08:42:21 vmtellswin1 kernel[0]: Backtrace 0x426b0b 0x4269fb  
0x426446 0x6d4b2a 0x6d6ea1 0x6d75c3 0x6d8129
Nov  8 08:42:21 vmtellswin1 kernel[0]: Kernel loadable modules in  
backtrace (with dependencies):
Nov  8 08:42:21 vmtellswin1 kernel[0]:  
at.obdev.nke.LittleSnitch(2.0.21)@0x6d1000->0x6f1fff
Nov  8 08:42:21 vmtellswin1 kernel[0]: m7e0f6384m0ca6b462 -536870211
Nov  8 08:42:21 vmtellswin1 kernel[0]: m15b71329 -536870211
Nov  8 08:42:21 vmtellswin1 com.apple.launchd[1]  
(org.apache.httpd[624]): Exited with exit code: 1
Nov  8 08:42:21 vmtellswin1 com.apple.launchd[1] (org.apache.httpd):  
Throttling respawn: Will start in 10 seconds

Thanks for any help
---markus---

Markus Ruggiero
rucotec consulting and technologies    email     mailto:markus.ruggiero at rucotec.ch
rucotec GmbH                           web       http://www.rucotec.ch
Steinentorstrasse 8
4051 Basel                             Mobile    +41 (0)79 508 4701
Switzerland                            Phone/Fax +41 (0)61 271 4990