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dockerdocker-cloud

Docker cloud builtin load balancing

When I deploy a new service with 3 containers via docker cloud I get 3 container endpoints and 1 service endpoint.

What I want to know is, how works the traffic forwarding on the service endpoint to the containers? Is there a built in load balancing or is this just a dns round robin?

The service endpoint has a different IP than the containers, so where is this forwarding service running?

Thank you guys for your help.

Solution

  • I could find the answer here: https://docs.docker.com/docker-cloud/apps/ports/#/service-and-container-dns-endpoints

    It says about the service endpoint:

    This DNS endpoint (multiple A record) resolves to the IPs of the nodes where the containers are running, in a round-robin fashion.