Lab #3: Create a service
In this lab we will be looking to different option to connect service with user defined Overlay network.
Pre-requisite:
Tested Infrastructure
| Platform | Number of Instance | Reading Time |
|---|---|---|
| Play with Docker | 2 | 5 min |
Pre-requisite
- Create an account with DockerHub
- Open PWD Platform on your browser
- Click on Add New Instance on the left side of the screen to bring up Alpine OS instance on the right side
- Swarm cluster
Create service on overlay network myoverlay0
$ docker service create --name testWeb -p 80:80 --network=myoverlay0 --replicas 3 httpd
Checking Network ID for the service
$ docker service inspect --format= testWeb
Connect an existing service to an overlay network
Createing A new service with name testApp
$ docker service create --name testApp -p 8081:80 --replicas 3 nginx:alpine
Checking the current network for the service
$ docker service inspect --format= testApp
Connecting service to userdefined network myoverlay0
$ docker service update --network-add myoverlay0 testApp
Checking the current network Endpoint for the service
$ docker service inspect --format= testApp
Removing user defined network myoverlay0 for service testApp
$ docker service update --network-rm myoverlay0 testApp