Sundry

The respectably rugged, remarkably reliable, reconfigurable, round-robin reverse proxy.

Sundry is a caching, dynamically configurable, reverse proxy, written in NodeJS and backed by redis.

Cool Stuff

• Dynamically add and remove hosts and backends with 0 downtime.
• Wildcard https, http -> https redirect built in.
• Centralize request logging and error handling without exposing backend errors.
• Programically control backend access in real time.

Features

• Separate CLI app to view and manage hosts and routes.
• Really, Really fast, workload is very nearly 100% Asyncronous (Aside from a couple of ifs and assigments on each request)
• System Daemon, can drop privleges to bind to ports 80 and 443, or use Authbind.

Installation and setup

Requirements

• Redis server (with events enabled)
• Preferably local to the Sundry server, bare minimum on the local network.
• "notify-keyspace-events"
• With "gsE" events enabled.

• More Info on Redis keyspace events

• NodeJS v.11.0 +

• AuthBind for port 80/443 bindings as non root user.
• Upstart for running as a system daemon.

Install Sundry

Installation

$ npm install -g sundry

Configuration

Sundry relies on several configuration values, all of which can be provided in two ways.

1. Enviornment Variables. (Useful for running as a system daemon)
2. Values in $HOME/.sundry/config.json

You can generate a skeleton config by running...

$ sundry config build

This will create ~/.sundry/, ~/.sundry/ssl and ~/.sundry/config.json

Default files

Sundry uses some generic files for its default host, 404 and 500 error pages. You can override any of these by placing the correctly named file in ~/.sundry/html/<index/404/5xx>.html

Run Sundry

Production (some recent flavor of Ubuntu assumed.)

Create a new system user

$ sudo adduser --disabled-password sundry

Build default config (Optional)

$ sudo su -- sundry
$ sundry config build

Install/configure authbind

$ sudo apt-get install authbind
$ sudo touch /etc/authbind/byport/80 /etc/authbind/byport/443
$ sudo chown sundry:sundry /etc/authbind/byport/80 /etc/authbind/byport/443
$ sudo chmod 755 /etc/authbind/byport/80 /etc/authbind/byport/443

Create sundry.conf upstart file.

$ sudo touch /etc/init/sundry.conf
$ sudo <vi/emacs/nano/ed> /etc/init/sundry.conf
# no flame wars here

description "Sundry Dynamic Router"
author      "PaperElectron"

start on (local-filesystems and net-device-up IFACE=eth0)
stop on shutdown

# Automatically Respawn:
respawn
respawn limit 5 60

script
  export HOME=/home/sundry
  export NODE_ENV=production
  exec start-stop-daemon --start -u sundry --exec /usr/bin/authbind sundry start
end script

Test / Development

Generate a self signed cert.

Browsers will flag this as an insecure certificate.

$ cd ~/.sundry/ssl
$ openssl genrsa -out key.pem 2048
$ openssl req -new -key key.pem -out server.csr
$ openssl x509 -req -days 365 -in server.csr -signkey key.pem -out cert.pem