Cli: Docker stack deploy ignores alias (on external networks)

[mapio]

Even if aliases are specified in the configuration file, docker stack deploy seems to ignore them, while docker-compose up honors the same configuration.

Please see info.txt for docker info output and version.txt for docker version output; see also bugrep.txt that will be referred in the following as bugrep.yml used below.

Using docker-compose (alias works):

First create a network with docker network create anexternalnet then run docker-compose -f bugrep.yml up -d, inspect the only created container, obtaining compose.txt output. As you can see, the Networks part shows the defined alias.

 "Networks": {
                "anexternalnet": {
                    "Aliases": [
                        "aservice",
                        "analias",
                        "9a1ffe79138b"
                    ],
                 ...

Using docker stack deploy (alias seems not to work):

Cleanup the previously created containers and netowrk, and start swarm mode with docker swarm init.

Then create a network in the swarm scope with docker network create --scope swarm anexternalnet and then run docker stack deploy -c bugrep.yml bugrep, inspect the only created container, obtaining stack.txt. As you will see, the Networks part now is

 "Networks": {
                "anexternalnet": {
                    "Aliases": [
                        "fc19e2612ffb",
                    ],
                 ...

the alias analias(and the service name aservice) are both missing.

[dnephin]

I can't reproduce this with engine v17.12, and cli master.

version: '3.5'

services:
  foo:
    image: redis:alpine
    networks:
      innet: {aliases: [analias]}
      extswarmnet: {aliases: [analias]}
      overextswarmnet: {aliases: [analias]}


networks:
  extswarmnet:
    external:
      name: extswarmnet

  overextswarmnet:
    external:
      name: overextswarmnet

  innet:

                "Networks": [
                    {
                        "Target": "wwxmmfzfwk4csf0sfitkui0if",
                        "Aliases": [
                            "analias",
                            "foo"
                        ]
                    },
                    {
                        "Target": "i680iavd5etjqidijhe46yvrk",
                        "Aliases": [
                            "analias",
                            "foo"
                        ]
                    },
                    {
                        "Target": "uhnmbr69v1rnlpgi39m6g5dxj",
                        "Aliases": [
                            "analias",
                            "foo"
                        ]
                    }
                ],

$ docker network ls | grep ext
wwxmmfzfwk4c        extswarmnet         bridge              swarm
i680iavd5etj        overextswarmnet     overlay             swarm

[mapio]

Switching to edge 17.11.0-ceon OSX seems to fix it too (albeit I had to set version: '3'.

[ruasoliveira]

I'm having the same issue: aliases only work on external networks with docker-compose. With docker stack deploy, no alias is applied. Any changes on this behavior lately?

Client: Docker Engine - Community
 Version:           19.03.4
 API version:       1.40
 Go version:        go1.12.10
 Git commit:        9013bf583a
 Built:             Fri Oct 18 15:54:09 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.4
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.10
  Git commit:       9013bf583a
  Built:            Fri Oct 18 15:52:40 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

[superloach]

Excuse the necro, but this still isn't working, and I never saw an actual solution/answer :confused:

docker-compose.yml contains:

version: "3"

services:
  bot:
    image: "mapper"
    command: "./snart -dburl mapper-db -dbpass REDACTED"
    depends_on:
      - "db"
    networks:
      traefik:

  db:
    image: "recli"
    volumes:
      - "/var/db/mapper:/data:rw"
    networks:
      traefik:
        aliases:
          - "mapper-db"

networks:
  traefik:
    external: true

docker container inspect on the db container shows:

            "Networks": {
                "traefik": {
                    "IPAMConfig": {},
                    "Links": null,
                    "Aliases": [
                        "2b54a9e39d44"
                    ],
                    "NetworkID": "wots16xw8q6jlh4j4f6vpgww4",
                    "EndpointID": "7cf9cd3963609b571dd32e76fbb4bdf9bdc4c865aaed2bf04641fa855fc5dea2",
                    "Gateway": "192.168.208.1",
                    "IPAddress": "192.168.208.6",
                    "IPPrefixLen": 20,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:c0:a8:d0:06",
                    "DriverOpts": null
                }
            }

docker version shows:

Client:
 Version:           19.03.8-ce
 API version:       1.40
 Go version:        go1.14.1
 Git commit:        afacb8b7f0
 Built:             Thu Apr  2 00:04:36 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server:
 Engine:
  Version:          19.03.8-ce
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.14.1
  Git commit:       afacb8b7f0
  Built:            Thu Apr  2 00:04:16 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.3.3.m
  GitCommit:        d76c121f76a5fc8a462dc64594aea72fe18e1178.m
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683