As part of my Docker Certification, I have to a project that contains 1 docker-compose file that runs 4 services that communicate with each other. These four services act like a 1 tank controller and 3 tank sensors. I want to duplicate the entire docker-compose with all four services using Docker Swarm. Here is an image of what I'm trying to do: an image showing the final goal
I am having a lot of confusion when setting up the docker swarm. I ran the following commands:
docker swarm init
docker stack deploy --compose-file=docker-compose.yml tank
But this set up only lets me scale one service at a time. For example:
docker service scale tank_lowlevelalarm=4
This isn't what I want to do. I want to be able to scale the entire docker-compose by replicating all four services at the same time. My goal is that on my overlay network, it will look like I have multiple tanks, and each tank has 1 controller and 3 sensors. Is it possible for me to do this?
My docker-compose file, for reference:
version: '3.0'
services:
tli:
image: tli
networks:
- my-overlay
lowlvlalarm:
image: lowlvlalarm
build: .
networks:
- my-overlay
highlvlalarm:
image: highlvlalarm
build: ./HighLvlAlarm
networks:
- my-overlay
plc:
image: plc
depends_on:
- tli
- lowlvlalarm
- highlvlalarm
networks:
- my-overlay
networks:
my-overlay:
