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I have a setup with two small servers running nginx serving as proxy and a number of Apache+mod_php beefy servers. I am thinking on going over to PHP-FPM. Can I configure nginx to use a number of FastCGI servers? Or PHP-FPM itself to use workers on different machines? Or do I need to run nginx on the workers?

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2 Answers 2

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no you can run 1 nginx machine and many php-fpm machines.

upstream php {
  server 10.0.0.1:9000;
  server 10.0.0.2:9000;
  server 10.0.0.3:9000;
}

Then in your locaction

fastcgi_pass php;
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  • Thanks! That was totally not clear from the documentation.
    – chx
    Commented Dec 28, 2010 at 11:31
  • What about keep alive connections? What should the number of keep alive be?
    – CMCDragonkai
    Commented Apr 15, 2014 at 4:09
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A complement to Mike's answer.

Check this vulnerability that can arise when you have nginx and PHP-FPM in different servers. The bottom line is: don't allow users to upload content to your public directory.

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  • this got fixed in php >=5.3.9 issue
    – JohannesM
    Commented Oct 8, 2021 at 11:47

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