Portainer on a Docker Swarm .... Functionality

[macooper59]

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Hello Guys/Ladies,

I am running a 4 node docker swarm in my homelab environment and I was wondering how do I know where the container gets deployed and also which IP do I use in the Enviroment Settings under Public IP? The reason I ask is as you know there are four IPs in my Swarm. Thank you guys very much.

Michael

[Nick-Portainer]

Hello @macooper59

"How do I know where the container gets deployed?"

In Docker Swarm, the placement of containers is managed by Swarm’s scheduler. You can see where a container is deployed by checking the NODE column of your services. Here’s how you can check:

• Go to the “Services” section in your Portainer dashboard.
• Expand the Service and under Node will show where the service is running.

You can also use placement constraints to tell Swarm where exactly to run that service.

For the Environment address you will use one of the Manager IP addresses. In a Swarm, only the manager nodes are responsible for orchestrating the cluster, so you should use the IP address of a manager node.