Docker advanced method of rapid expansion

1. Command method

Run the nginx service in the created Swarm cluster and use the --replicas parameter to specify the number of replicas to start.

docker service create --replicas 3 -p 80:80 --name nginx nginx:latest

or

docker service create -p 80:80 --name nginx nginx:latest
docker service scale nginx=3
docker service ls #View the copy status

2. Portainer method

You can use portainer to create a service on the web interface and specify the number of replicas. You can also dynamically increase or decrease the number of replicas at any time.

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