[wp-hackers] Missed schedule - WP Bug

[JAYMIN PATEL]

We had similar problem on MU install and we found DATE on a few front end servers was off by 5 mins. worth checking..

> -----Original Message-----
> From: otto at ottodestruct.com
> Sent: Tue, 20 Jul 2010 06:44:43 -0500
> To: wp-hackers at lists.automattic.com
> Subject: Re: [wp-hackers] Missed schedule - WP Bug
> 
> And if all else fails:
> 
> define('ALTERNATE_WP_CRON',true);
> 
> This should be considered a last resort.
> 
> -Otto
> 
> 
> 
> On Tue, Jul 20, 2010 at 5:58 AM, Dion Hulse (dd32) <wordpress at dd32.id.au>
> wrote:
>> On Tue, 20 Jul 2010 19:58:12 +1000, Gavin Pearce
>> <Gavin.Pearce at 3seven9.com>
>> wrote:
>> 
>>> Cheers Andrew - always last to join the party.  ;)
>>> 
>>> I did think about server config - but got thrown off that scent as
>>> other
>>> blogs on the same server, with the same setup, work without issue.
>>> 
>>> Any idea what the obvious server issues were? We've got a pretty solid
>>> Red Hat install, but obviously will take a look.
>>> 
>>> G
>> 
>> The main items would be
>>  * The Domain not resolving to / not being accessable via loopback, ie.
>> The
>> IP of mysite.com is a load-balancer in front of the server which doesnt
>> accept requests from a local subnet
>>  * The Server has no DNS resolving abilities
>>  * The Server doesnt allow ANY outgoing (even loopback) connections
>>  * WordPress choosing a HTTP Transport which is incompatible with the
>> local
>> server for whatever reason ( Sometimes outgoing connections are fine,
>> but
>> loopback connections suffer from various bugs
>>  * .htaccess not making an exception for wp-cron.php calls (Ie. routing
>> all
>> .php files to another location.. or similar .htaccess rules)
>>  * .htaccess related security-blocking rules, might be blocking the
>> WordPress self-request based on 'not really a browser client' look to
>> it..
>> 
>> The list goes on, Best to check in the order:
>>  * Can the server make outgoing requests ( Core Control, my plugin, has
>> a
>> HTTP Access page, make sure the selected transport passes the Test
>> function
>> there )
>>  * Can the server make local requests  ( Really should add a "Local
>> connection test" function to the above plugin... )
>>  * Is the Cron request showing in the HTTP Logs? Are there any error
>> codes
>> present? If so, are there any mention of it in a mod_security or related
>> log
>> files
>>  * If the Cron request is succeeding, Does it occur with all plugins
>> disabled (Make a new install on the same server, see if it can future
>> publish posts - Its a possibility that a plugin may be affecting the
>> publishing ability and not being aware of it)
>> 
>> I cant think of much more I'd try right now, But there's a start
>> 
>> Cheers
>> Dion Hulse / dd32
>> 
>> Contact:
>>  e: contact at dd32.id.au
>>  Web: http://dd32.id.au/
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>> 
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