Nginx Reverse proxy TOMCAT hint permission denied while connecting to upstream

Nginx Reverse proxy TOMCAT hint permission denied while connecting to upstream, a lot of online is said permission denied while Reading to upstream, which is two completely different errors, I encountered the following:

To view the SELinux log discovery error:

Later found to be the problem of SELinux, so first turn off Selinux:setenforce 0;

Then enable SELinux, and then execute the following command to modify the SELinux value:

Setsebool-p Httpd_can_network_connect 1

Then the re-visit was normal.

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Nginx Reverse proxy TOMCAT hint permission denied while connecting to upstream