gobetween - modern & minimalistic load balancer and reverse-proxy for the :cloud: Cloud era.
Current status: Under active development. Currently in use in several highly loaded production environments.
Features
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- TCP - with optional The PROXY Protocol support
- TLS - TLS Termination + ACME & TLS Proxy
- UDP - with optional virtual sessions and transparent mode
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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
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- 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.
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- Static - hardcode backends list in config file
- Docker - query backends from Docker / Swarm API filtered by label
- Exec - execute arbitrary program and get backends from its 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
- LXD - query backends from LXD
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- Ping - simple TCP ping healthcheck
- Exec - execute arbitrary program passing host & port as options, and read healthcheck status from the stdout
- Probe - send specific bytes to backend (udp, tcp or tls) and expect correct answer (bytes or regexp)
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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
- Iphash1 - same as iphash but backend removal consistent (clients remain connecting to the same backend, even if some other backends down)
- Leastconn - select backend with least active connections
- Leastbandwidth - backends with least bandwidth
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Integrates seamlessly with Docker and with any custom system (thanks to Exec discovery and healthchecks)
-
Single binary distribution
Architecture
Usage
- Install with snap: https://snapcraft.io/gobetween
- Other Installation Options
- Read Configuration Reference
- Execute
gobetween --helpfor full help on all available commands and options.
Hacking
- Install Go 1.12+ https://golang.org/
$ git clone git@github.com:yyyar/gobetween.git$ make$ make run
Debug and Test
Run several web servers for tests in different terminals:
$ python -m SimpleHTTPServer 8000$ python -m SimpleHTTPServer 8001
Instead of Python's internal HTTP module, you can also use a single binary (Go based) webserver like:
https://github.com/udhos/gowebhello
gowebhello has support for SSL sertificates as well (HTTPS mode), in case you want to do quick demos
of the TLS+SNI capabilities of gobetween.
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
Enable profiler and debug issues you encounter
[profiler]
enabled = true # false, true
bind = ":6060" # "host:port"
Performance
It's Fast! See Performance Testing
The Name
It's a 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 :smile:
License
MIT. See LICENSE file for more details.
Authors & Maintainers
All Contributors
- See AUTHORS
Community
- Join gobetween Telegram group here.
Logo
Logo by Max Demchenko