[Pdns-users] Debugging Information "Pipe-Backend"

[Aki Tuomi]

On Sat, Aug 29, 2015 at 12:35:20PM -0400, Stan Weatherby wrote:
> Is there any more debugging information I can get from the pipebackend?  I’m randomly (seems it anyway) receiving very general errors as such:
> 
> ======
> 
> [PIPEBackend] Fatal argument error: Timeout waiting for data from coprocess
> 
> Caught an exception instantiating a backend: Timeout waiting for data from coprocess
> 
> Distributor caught fatal exception: Timeout waiting for data from coprocess
> 
> ======
> 
> I don’t see any escalation in cpu usage or memory in these instances and am not seeing any pipe script errors logged.  The pipe-timeout is set to 5000.  How can I further debug where this is dying?
> 
> Any help/advice would be greatly appreciated!
> 
> -Stan
> 

Hi! 

Best way to debug your pipe backend is to log all received questions and answers. Usually this error indicates that you forgot to reply with something that was expected.

Aki

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