[wp-hackers] Missed schedule - WP Bug

Otto otto at ottodestruct.com
Tue Jul 20 11:44:43 UTC 2010


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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