What to do if you get a "Service Temporarily Unavailable" error when using Apache mod_proxy
If you try to access a Mojolicious application using Apache mod_proxy, you may get "Service Temporarily Unavailable". One possible cause is that SELinux is enabled. If you can disable SELinux as a project, disabling it is an easy solution.
Edit the SELinux configuration file.
vi / etc / selinux / config
Please change to the following items.
SELINUX = disabled
Please restart the server after making changes.