Hi Brice

Thanks for your answer - it helped me a bit further in the  
troubleshooting. Running puppetmaster outside of passenger gives no  
errors at all. All my hosts check in and puppetmaster stores their  
config. So it seems that there's a bug when using Passenger together  
with storeconfigs. Maybe it's the version of rails (2.0.5) that's the  
culprit? Is it compatible with passenger?

My list of gems:

actionmailer (2.0.5)
actionpack (2.0.5)
activerecord (2.0.5)
activeresource (2.0.5)
activesupport (2.0.5)
cgi_multipart_eof_fix (2.5.0)
daemons (1.0.10)
fastthread (1.0.4, 1.0.1)
gem_plugin (0.2.3)
hoe (1.11.0)
mongrel (1.1.5)
mysql (2.7)
passenger (2.2.2, 2.1.2)
rack (0.4.0)
rails (2.0.5)
rake (0.8.7, 0.8.4)
rubyforge (1.0.3)
rubygems-update (1.3.3)

I'm using v. 0.4.0 of rack as the documentation describes 
(http://reductivelabs.com/trac/puppet/wiki/UsingPassenger 
). When calling puppetmaster directly on the console, I bypass Rack  
too, don't I...?

On Jun 6, 2009, at 14:26 , Brice Figureau wrote:

> First make sure you installed the mysql Ruby Gem (or the correct  
> package
> on your system).
>
> On 5/06/09 11:58, Juri Rischel Jensen wrote:
>> Now, when I startup mysql and puppetmasterd, the first one or two  
>> runs
>> of puppetd on the client is fine. Puppetmasterd stores the configs,  
>> but
>> suddenly (and this is with only one host contacting the puppetmaster)
>> the log says:
>>
>> Could not store configs: Mysql::Error: MySQL server has gone away:
>> SELECT * FROM `hosts`   WHERE (`hosts`.`name` = 'web01.mydomain.com')
>> LIMIT 1
>
> Server has gone away usually means MySQL has crashed. Check your
> mysql.err file or syslog on this system to see what happened.
> Which version of MySQL is it?
>
>> At first I thought it was MySQL drowning, but I've found that a  
>> restart
>> of puppetmasterd (with /etc/init.d/apache2 restart, as it run through
>> Passenger) fixes the problem - but only temporarily. Next time a host
>> contacts the puppetmaster, I get the error stated above. :-( And it
>> fails until I restart puppetmaster again.
>
> Usually MySQL restarts itself after a crash (it runs through a wrapper
> called mysqld_safe usually).
>
> But maybe, the mysql crash leaves the puppetmaster in an unstable  
> state
> which prevents it to connect back to MySQL.
>
>> I have the following optimizations in my passenger configuration (cut
>> from Nigel Kerstens mails about his Passengerbased setup):
>>
>> PassengerLogLevel 1
>> PassengerMaxRequests 3000
>> PassengerMaxPoolSize 15
>> PassengerStatThrottleRate 600
>>
>> I've also tried to optimize the MySQL configuration, but as a  
>> restart of
>> Apache/Passenger solves the problem (for one clientrun), I don't  
>> think
>> that the problem lies with MySQL.
>>
>> Do any of you have a clue of what can be wrong here?
>
> I'd suggest you run your master outside of passenger to see if you can
> replicate the issue.
> Run the master on the console with --no-daemonize --debug --trace.
> Then connect your clients.
> If it crashes, you can rule out passenger as the culprit.
> If it works, then it is a bad interaction between passenger, rails
> and/or MySQL.

--
Med venlig hilsen/Best regards
Juri Rischel Jensen

Fab:IT ApS
Vesterbrogade 50
DK-1620 København
Tlf: +45 70 202 407
www.fab-it.dk


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