我的 apache2 服务器遇到错误：“502 Bad Gateway”。
我开始使用 ExpressJS 然后就发生了这种情况。
我这样做是因为我需要使用 pug 和其他后端实用程序。这是我的 apache2 配置：
<VirtualHost *:80>
# The ServerName directive sets the request scheme, hostname and port that
# the server uses to identify itself. This is used when creating
# redirection URLs. In the context of virtual hosts, the ServerName
# specifies what hostname must appear in the request's Host: header to
# match this virtual host. For the default virtual host (this file) this
# value is not decisive as it is used as a last resort host regardless.
# However, you must set it for any further virtual host explicitly.
ServerName shieldbotlist.tk
ServerAdmin webmaster@localhost
# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
# error, crit, alert, emerg.
# It is also possible to configure the loglevel for particular
# modules, e.g.
#LogLevel info ssl:warn
ProxyPreserveHost On
# setup the proxy
<Proxy *>
Order allow,deny
Allow from all
</Proxy>
ProxyPass / http://64.52.84.31:443/
ProxyPassReverse / http://64.52.84.31:443/
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
# For most configuration files from conf-available/, which are
# enabled or disabled at a global level, it is possible to
# include a line for only one particular virtual host. For example the
# following line enables the CGI configuration for this host only
# after it has been globally disabled with "a2disconf".
#Include conf-available/serve-cgi-bin.conf