Networking Between Docker Containers

If you don't want to use a docker-compose file for whatever reason you can create networking between containers manually.

This can be achieved only on the same network!

How to set networking for DecisionRules in docker

How to setup multi-container app

What containers will we need:

1. Server App

2. Client App

3. Business Intelligence App

4. Redis

5. MongoDB

Method 1: Setup with terminal

First of all, we need to create a docker network because containers, by default, don't see other containers thus they cannot communicate with each other. We will use a simple command docker network create

Note: If you are using PowerShell on Windows you need to use `` for multi-line command!

// creating docker network space
docker network create <network_name>

// if you want to remove network
docker network remove <network_name>

In the second step, we need to run all mandatory containers mentioned above. We will do it with the help of docker run . In this command, we will set ports and env variables as well.

// create mongoDB docker container
docker run -dp 27017:27017 --network decisionrules mongo

// create redis docker container
docker run -dp 6379:6379 --network decisionrules redis

If the command is successful it prints containers id

-d flags that can be interpreted as-d -pwhich is a detached mode with exposed ports. Detached mode means that the container runs in the background and grimly does its work.

// creating decisionrules server container
docker run -d -p 8080:8080 -p 8081:8081 
--network decisionrules
-e WORKERS_NUMBER=1
-e REDIS_URL=YOUR_REDIS_URL
-e MONGO_DB_URI=YOUR_MONGODB_URL
-e BI_MONGO_DB_URI=YOUR_BI_MONGODB_URL
-e CLIENT_URL=YOUR_CLIENT_URL
-e LICENSE_KEY=YOUR_LICENSE_KEY
-v license:/assets/lic/ decisionrules/server

Your env properties configuration may vary. For all possibilities go here

// creating decisionrules client container
docker run -dp 80:80 --network decisionrules -e API_URL=YOUR_CLIENT_URL BI_API_URL=YOUR_BI_URL decisionrules/client

// creating decisionrules business intelligence container
docker run -dp 82:82 --network decisionrules -e BI_MONGO_DB_URI=YOUR_MONGO_URI decisionrules/business-intelligence

Hurray! It is done. Now you can go to localhost:80 a DecisionRules should be up and running.

Method 2: Setup with docker-compose file

You can use docker-compose for a very easy setup.

version: "3.7"

services:
  server:
    image: decisionrules/server
    environment:
      - "SHOWCASE=false"
      - "REDIS_URL=YOUR_REDIS_URL"
      - "MONGO_DB_URI=YOUR_MONGO_URI"
      - "CLIENT_URL=YOUR_CLIENT_URL"
      - "LICENSE_KEY=YOUR_LICENSE_KEY"
    ports:
      - "8080:8080"
      - "8081:8081"
    links:
      - mongoDb
      - redis
  client:
    image: decisionrules/client
    environment:
      - "API_URL=YOUR_API_URL"
      - "BI_API_URL=YOUR_BI_API_URL"
    ports:
    - "80:80"
    
  business-intelligence:
    image: decisionrules/business-intelligence
    environment:
      - "BI_MONGO_DB_URI=YOUR_MONGO_URI"
    ports:
    - "8082:8082"  

  mongoDb:
    image: mongo
    ports:
      - "27017:27017"

  redis:
    image: redis
    ports:
      - "6379:6379"

Run docker-compose with docker compose up command