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apache 503 errors


clafff

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I manage several apache 2.2 + php servers.

 

When there is heavy traffic a lot of GET request got a 503 error code. The POST request does not. How is this possible ?

 

More, I got these 503 errors but there are cpu, memory and http slots left, so I don't understant why I got these errors.

 

Does someone has a hint ?

 

Thanks

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nothing special in the logs.

 

for example I have a cron script that calls a stat page on every server. If the script use a GET request, there are numerous 503 errors when a server is a little loaded. If it uses a POST request to retrieve the data, there are no errors.

I would like to know exactly what this 503 error mean, no cpu left, request queue filled, ... ?

 

 

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