This is a ReactPHP based tiny load balanced for testing and development purposes. With a simple configuration and an already published docker image, you will be able to manage multiple servers in your docker-compose without any pain by balancing your traffic among them all.

You can install the balancer by just cloning the repository somewhere in your localhost.

cd /tmp/
git clone [email protected]:driftphp/tiny-load-balancer.git
cd tiny-load-balancer

Then, you should install the composer dependencies. Make sure you have composer installed locally. If you have some php platform issues, just composer update instead of install.

composer install

You can use the balancer as a simple random balancer. Not even a round robin. This repository is meant to be used as a small piece of code for balancing TCP requests among a set of ReactPHP servers, so a simple random balancing would be enough for that purpose.

./balancer 8000 8001
./balancer 8000 myhost:8001 127.0.0.1:8002
./balancer 8000 myhost:8001-8010
./balancer 8000 :8001-8010

• By default, local 127.0.0.1 host will be used if only ports are defined
• Ports with format 8001-8010 will result in a sequence of all ports between both numbers, 8001, 8002, 8003... 8010
• You can use named hosts
• You can add multiple hosts and ports

By default, debug will be enabled. You can disable output by using the flag silence.

./balancer 8000 8001 --silence

You can add this balancer in your docker-compose file.

version: '3'
services:
  tiny_balancer:
    image: "driftphp/tiny-balancer"
    ports:
      - "8000:8000"
    networks: [main]
    entrypoint: [
      "/balancer",
      "8000",
      "server_1:8000",
      "server_2:8000"
    ]

  server_1:
    build: .
    networks: [main]
    container_name: server_1
    entrypoint: ["/server-entrypoint.sh"]

  server_2:
    build: .
    networks: [main]
    container_name: server_2
    entrypoint: ["/server-entrypoint.sh"]

networks:
  main: