SwarmMode - 1.13 RC2 - DNS RR - Individual IPs not retrieved

[NGalak]

Dear,

When creating a service with --endpoint-mode dnsrr, the individual IPs are not retrieved by Traefik.

Purpose: try to avoid double level of LB: Traefik and Swarm: "You can configure the service to use DNS round-robin directly without using a VIP, by setting the --endpoint-mode dnsrr when you create the service. DNS round-robin is useful in cases where you want to use your own load balancer." (https://docs.docker.com/engine/swarm/networking/).

Service creation:
docker service create --name guid --replicas 3 --mount type=bind,src=/etc/hostname,dst=/tmp/worker_hostname,readonly --network services --endpoint-mode dnsrr --label traefik.port=9000 swarm-mode-guid:1

Backend URL retrieved by Traefik:
{"server-guid":{"url":"http://:9000","weight":1}}

Internal Swarm Mode DNS:
nslookup guid
Name: guid
Address 1: 10.0.0.12 guid.3.hwnqvf50rfrsdrp8cwu61aepf.services
Address 2: 10.0.0.10 guid.1.u4ec657n9rxf2u5uhr99un9hp.services
Address 3: 10.0.0.11 guid.2.t695dbbtslm805njqmd40gejd.services

When using a VIP and integrated Swarm LB, everything works OK:
{"server-guid":{"url":"http://10.0.0.10:9000","weight":1}}

Thanks alot for Traefik.

Best regards

Nian.

[emilevauge]

Duplicate of #833