I have found something.

I ran:
sudo netstat -tnlp | grep :80

to find out who was listening to port 80

tcp        0      0 255.255.255.255:80      0.0.0.0:*               LISTEN 
     13571/aped_staging
tcp        0      0 83.170.71.xxx:80        0.0.0.0:*               LISTEN 
     12757/aped

As you can see, aped_staging is listening on port 80, but instead of 
listening on its IP, it listens 255.255.255.255. Does that mean the IP is 
not working??? It visibly could not connect to it... 

The production server is listening its IP fine.

Any clue? 


On Wednesday, May 11, 2016 at 8:38:50 PM UTC+2, Pablo wrote:
>
> Assuming you had to update the Apache listening port to something other 
> than 80. Did you revert that back to 80 after removing the proxy server?
>
> On Wed, May 11, 2016, 2:27 PM Nicolas <[email protected] <javascript:>> 
> wrote:
>
>> While I was playing with HaProxy on my staging environment (which is the 
>> same as the production environment), something wrong happened.
>>
>> My staging APE is launched and configured exactly the same way as the 
>> production APE, so exactly as it was before I started experiments with 
>> HaProxy.
>>
>> However, I can't reach it all...
>>
>> What can I do to find out why I get this error?
>>
>> Connecting to staging.xxxxxxxx.com|83.170.xx.xxx|:80... failed: 
>> Connection refused.
>>
>> Is there a tracing tool that will tell me where the request went and 
>> where it stopped?
>>
>>
>> PS: I have uninstalled HaProxy completely. I suspect that some 
>> configurations made by HaProxy when I was testing are still operating... 
>> But what? Where?
>>
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> -- 
>
> Sincerely,
>
> Pablo Tejada
>
> From Mobile
>

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