Hello,

I am trying to use a MAP function based on HOSTNAMES to determine if this domain should fastcgi_pass to a php5 or php7 container, but am having problems.

My map looks like

map $host $php_proxy_container {
hostnames;

default "php5fpm:9000";

www.example.com http://www.example.com/ "php7fpm:9000";
}


My fastcgi file looks like

fastcgi_pass $php_proxy_container;


I have tried also moving the :9000 of the mapping to the the fastcgi_pass to look like fastcgi_pass $php_proxy_container:9000 but alas it did not work either.

I am using MAPs in other places in this same format and they work.

I get a generic 502 bad gateway, and nothing more in the http log. Changing the fastcgi_pass line to the exact value in the map and restarting does work.

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