Getting Started with Docker Stacks
- Create a compose file for the stack.
vi simple-stack.ymlversion: '3' services: web: image: nginx busybox: image: radial/busyboxplus:curl command: /bin/sh -c "while true; do echo Hello!; sleep 10; done" - Deploy the stack and examine it using various commands.
docker stack deploy -c simple-stack.yml simple
docker stack ls
docker stack ps simple
docker stack services simple
docker service logs simple_busybox - Modify the stack to use an environment variable.
vi simple-stack.ymlversion: '3' services: web: image: nginx busybox: image: radial/busyboxplus:curl command: /bin/sh -c "while true; do echo $$MESSAGE; sleep 10; done" environment: - MESSAGE=Hello!docker stack deploy -c simple-stack.yml simple
docker service logs simple_busybox - Modify the stack to expose a port.
vi simple-stack.ymlversion: '3' services: web: image: nginx ports: - "8080:80" busybox: image: radial/busyboxplus:curl command: /bin/sh -c "while true; do echo $$MESSAGE; sleep 10; done" environment: - MESSAGE=Hello!docker stack deploy -c simple-stack.yml simple - Modify the stack to use the BusyBox service to communicate with the web service.
vi simple-stack.ymlversion: '3' services: web: image: nginx ports: - "8080:80" busybox: image: radial/busyboxplus:curl command: /bin/sh -c "while true; do echo $$MESSAGE; curl web:80; sleep 10; done" environment: - MESSAGE=Hello!docker stack deploy -c simple-stack.yml simple - Delete the stack.
docker stack rm simple
Tag:Docker Swarm
