What’s the difference between having a registry and not having a registry?

[silasabbott]

I'm confused on what the difference is between adding additional servers without a registry and adding workers to the cluster with a registry. Can someone help me understand?

[Siumauricio]

Basically there are 2 things:

• Docker swarm is what is currently used for auto-scaling automatically, it's a tool integrated in docker, so it's built in itself.

• On the other hand remote servers is a slightly different approach, basically you link a server and you can deploy applications but it has nothing to do with your dokploy instance.

In short docker swarm is tied to your main dokploy ui instance, while remote servers is not,

Example if you are using the docker swarm cluster and have several replicas in a worker, and your main instance goes down, everything will go down, on the other hand if you are using remote servers, if your dokploy ui instance goes down, your applications will still run because they have nothing to do with each other.

[silasabbott]

Thanks that makes sense, appreciate the explanation! If I add a second swarm manager node on a different server, will this reduce chances of everything going down like you mentioned?

[raugustos1]

I'd like to know.!

[djsisson]

you should always maintain an odd number of swarm managers, so if you have to increase above one, you should increase it to 3

https://docs.docker.com/engine/swarm/admin_guide/#maintain-the-quorum-of-managers