[Bug 700146] [NEW] The default configuration of httpd-cc.conf on the cluster controller is causing apache2 to write the /var/log/eucalyptus/cc.log* files incorrectly. Versions 1.62, 2.02 of eucalyptus-cc.

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The default configuration of httpd-cc.conf on the cluster controller is
causing apache2 to write the /var/log/eucalyptus/cc.log* files
incorrectly.   The adverse effects from the incorrect setting are shown
below.

someuser at somecchost:/var/lib/eucalyptus# lsof | grep cc.log
dhcpd3    14739      dhcpd    9w      REG                8,3   20025704 1073742081 /var/log/eucalyptus/cc.log.5 (deleted)
apache2   25342 eucalyptus    9w      REG                8,3    9889552 1073742264 /var/log/eucalyptus/cc.log
apache2   25343 eucalyptus    9w      REG                8,3    9889552 1073742264 /var/log/eucalyptus/cc.log
apache2   25344 eucalyptus    9w      REG                8,3    9889552 1073742264 /var/log/eucalyptus/cc.log
apache2   25345 eucalyptus    9w      REG                8,3    9889552 1073742264 /var/log/eucalyptus/cc.log
apache2   25346 eucalyptus    9w      REG                8,3   20025704 1073742081 /var/log/eucalyptus/cc.log.5 (deleted)
apache2   25371 eucalyptus    7w      REG                8,3    3817703 1073742201 /var/log/eucalyptus/cc.log.3
apache2   25375 eucalyptus    9w      REG                8,3    9889552 1073742264 /var/log/eucalyptus/cc.log
apache2   25376 eucalyptus    9w      REG                8,3   20025704 1073742081 /var/log/eucalyptus/cc.log.5 (deleted)
apache2   25761 eucalyptus    9w      REG                8,3    9889552 1073742264 /var/log/eucalyptus/cc.log
someuser at somecchost:/var/lib/eucalyptus# ps aux|grep apache
root     25338  0.0  0.0  57072  2256 ?        Ss   Dec06   0:15 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25342  0.1  0.1 1268136 92272 ?       Sl   Dec06  29:33 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25343  0.1  0.1 1268140 90676 ?       Sl   Dec06  29:58 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25344  0.1  0.1 1268136 92332 ?       Sl   Dec06  29:41 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25345  0.1  0.1 1268152 90600 ?       Sl   Dec06  29:43 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25346  0.1  0.1 1268528 92596 ?       Sl   Dec06  29:54 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25371  0.1  0.1 1268144 90548 ?       Sl   Dec06  29:37 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25375  0.1  0.1 1268132 92824 ?       Sl   Dec06  29:53 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25376  0.1  0.1 1268144 90948 ?       Sl   Dec06  29:41 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
106      25761  0.3  0.0 1280204 32388 ?       S    Dec06  81:43 apache2 -f /var/run/eucalyptus/httpd-cc.conf -D FOREGROUND
root     31471  0.0  0.0   7624   920 pts/0    S+   09:13   0:00 grep apache 

When looking at open cc.log* files you will notice that some are deleted
because eucalyptus rotates the log files in it's output handler in
util/misc.c as logprintfl().  They are being rotated while other threads
are holding on to the file, thus rotating them until deleted.  Here is
the incorrect setting from /var/run/eucalyptus/httpd-cc.conf:

<IfModule mpm_prefork_module>
	StartServers 5
	MinSpareServers 5
	MaxSpareServers 10
	MaxClients 8
	MaxRequestsPerChild  0
</IfModule>

<IfModule mpm_worker_module>
	StartServers 5
	MaxClients 8
	MaxRequestsPerChild   0
	MinSpareThreads 25
	MaxSpareThreads 75
	ThreadLimit 64
	ThreadsPerChild 1
</IfModule>

<IfModule mpm_event_module>
    StartServers 5
    MaxClients 8
    MinSpareThreads 25
    MaxSpareThreads 75
    ThreadLimit 64
    ThreadsPerChild 1
    MaxRequestsPerChild   0
</IfModule>

The default configuration found in the 1.6.2 eucalyptus source and 2.0.2
source under tools called httpd.conf is set correctly.

<IfModule mpm_prefork_module>
	StartServers       0
	MinSpareServers    1
	MaxSpareServers    0
	MaxClients         1
	MaxRequestsPerChild  0
</IfModule>

<IfModule mpm_worker_module>
	StartServers          0
	MaxClients            1
	MaxRequestsPerChild   0
	MinSpareThreads       1
	MaxSpareThreads       0
	ThreadLimit	      1
	ThreadsPerChild       1
</IfModule>

<IfModule mpm_event_module>
    StartServers          0
    MaxClients            1
    MinSpareThreads       1
    MaxSpareThreads       0 
    ThreadLimit           1
    ThreadsPerChild       1
    MaxRequestsPerChild   0
</IfModule>


Here is version information for the eucalyptus-cc package that was cleanly installed to check for the misconfiguration.
someuser at someplace:/var/run/eucalyptus$ dpkg -l |grep eucalyptus
ii  eucalyptus-cc                     1.6.2-0ubuntu30.4                 Elastic Utility Computing Architecture - Clu
ii  eucalyptus-common                 1.6.2-0ubuntu30.4                 Elastic Utility Computing Architecture - Com
ii  eucalyptus-gl                     1.6.2-0ubuntu30.4                 Elastic Utility Computing Architecture - Log
someuser at someplace:/var/run/eucalyptus$ sudo apt-get install eucalyptus-cc

Another way I figured this out is that the documentation for version 1.1
explicitly says to change the configuration file to the above settings:
http://open.eucalyptus.com/wiki/eucalyptus-source-code-11

Thanks

Eric Pershey

** Affects: eucalyptus
     Importance: Undecided
         Status: Invalid

** Affects: eucalyptus (Ubuntu)
     Importance: Undecided
         Status: New

-- 
The default configuration of httpd-cc.conf on the cluster controller is causing apache2 to write the /var/log/eucalyptus/cc.log* files incorrectly. Versions 1.62, 2.02 of eucalyptus-cc.
https://bugs.launchpad.net/bugs/700146
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