Can you set up automatic scalability of services in Docker Swarm?

Docker Swarm does not have built-in support for automatic scaling of services based on metrics (such as CPU load or request count). Scaling is usually performed manually using the docker service scale command.

However, automation can be implemented with external tools and scripts that monitor the state of services and invoke scaling commands via the Docker Swarm API.

For more advanced automatic scaling, Kubernetes is often used, which supports Horizontal Pod Autoscaler (HPA) and other mechanisms.

In summary: automatic scaling in Docker Swarm is only possible through external solutions; there is no built-in feature.