secsecsec / gobetween

:cloud: Modern & minimalistic load balancer for the Сloud era

gobetween - modern & minimalistic load balancer and reverse-proxy for the ☁️ Cloud era.

Current status: Under active development. Currently in use in several highy loaded production environments.

Features

• Fast L4 Load Balancing

  • TCP
  • UDP
  • TLS - TLS Termination & TLS Proxy

• Clear & Flexible Configuration with TOML or JSON

  • File - read configuration from the file
  • URL - query URL by HTTP and get configuration from the response body
  • Consul - query Consul key-value storage API for configuration

• Management REST API

  • System Information - general server info
  • Configuration - dump current config
  • Servers - list, create & delete
  • Stats & Metrics - for servers and backends including rx/tx, status, active connections & etc.

• Discovery

  • Static - hardcode backends list in config file
  • Docker - query backends from Docker / Swarm API filtered by label
  • Exec - execte arbitrary program and get backends from it's stdout
  • JSON - query arbitrary http url and pick backends from response json (of any structure)
  • Plaintext - query arbitrary http and parse backends from response text with customized regexp
  • SRV - query DNS server and get backends from SRV records
  • Consul - query Consul Services API for backends

• Healthchecks

  • Ping - simple TCP ping healtcheck
  • Exec - execute arbitrary program passing host & port as options, and read healtcheck status from the stdout

• Balancing Strategies (with SNI support)

  • Weight - select backend from pool based relative weights of backends
  • Roundrobin - simple elect backend from pool in circular order
  • Iphash - route client to the same backend based on client ip hash
  • Leastconn - select backend with least active connections
  • Leastbandwidth - backends with least bandwidth

• Integrates seamlessly with Docker and with any custom system (thanks to Exec discovery and healtchecks)

• Single binary distribution

Architecture

Usage

• Download and Install
• Read Configuration Reference
• Execute gobetween --help for full help on all available commands and options.

Hacking

• Install Go 1.8+ https://golang.org/
• $ git clone [email protected]:yyyar/gobetween.git
• $ make deps
• $ make run

Debug and Test

Run several web servers for tests in different terminals:

• $ python -m SimpleHTTPServer 8000
• $ python -m SimpleHTTPServer 8001

Put localhost:8000 and localhost:8001 to static_list of static discovery in config file, then try it:

• $ gobetween -c gobetween.toml

• $ curl http://localhost:3000

Performance

It's Fast! See Performance Testing

The Name

It's play on words: gobetween ("go between").

Also, it's written in Go, and it's a proxy so it's something that stays between 2 parties 😄

License

MIT. See LICENSE file for more details.

Authors & Contributors

• Yaroslav Pogrebnyak
• Nick Doikov
• Ievgen Ponomarenko
• Illarion Kovalchuk

Logo

Logo by Max Demchenko