DigitalOcean Reverse Proxy
Why Reverse Proxy
A reverse proxy is a type of proxy server that takes HTTP(S) requests and transparently distributes them to one or more backend servers. Reverse proxies are useful because many modern web applications process incoming HTTP requests using backend application servers which aren't meant to be accessed by users directly and often only support rudimentary HTTP features. You can use a reverse proxy to prevent these underlying application servers from being directly accessed. They can also be used to distribute the load from incoming requests to several different application servers, increasing performance at scale and providing fail-safeness. They can fill in the gaps with features the application servers don't offer, such as caching, compression, or SSL encryption too.
Prerequisites
- CentOS 7 Droplet with root/sudo access
- Apache 2 installed on your CentOS 7 Droplet
- Optionally, the nano/vim text editor
yum install httpd apachectl restart systemctl status httpd apachectl -t
Config Reverse Proxy
# /etc/httpd/conf.d/httpd-proxy.conf
<VirtualHost *:80>
ProxyPreserveHost On
ProxyRequests Off
AllowEncodedSlashes Off
ServerName dev.chorke.org
ServerAlias uat.chorke.org
<Proxy *>
Order Deny,Allow
Deny from all
Allow from ::1
Allow from 100.43.0
Allow from 127.0.0.1
Allow from 192.168.0
</Proxy>
# proxy for amqp
ProxyPass /amqp http://127.0.0.1:8300/amqp nocanon
ProxyPassReverse /amqp http://127.0.0.1:8300/amqp
# proxy for mqtt
ProxyPass /mqtt http://127.0.0.1:8301/mqtt nocanon
ProxyPassReverse /mqtt http://127.0.0.1:8301/mqtt
# proxy for ebis
ProxyPass /ebis http://127.0.0.1:8302/ebis nocanon
ProxyPassReverse /ebis http://127.0.0.1:8302/ebis
# proxy for fhir
ProxyPass /fhir http://127.0.0.1:8303/fhir nocanon
ProxyPassReverse /fhir http://127.0.0.1:8303/fhir
# proxy for init
ProxyPass /init http://127.0.0.1:8304/init nocanon
ProxyPassReverse /init http://127.0.0.1:8304/init
</VirtualHost>