Nomad: docker cli shows image sha instead of image name

[hamann]

Nomad version

Nomad v0.5.4

Operating system and Environment details

Tested on CoreOS alpha (1284.1.0) and Debian Jessie with docker 1.13.0

Issue

After updating nomad from 0.5.1 to 0.5.4 docker ps shows image sha (fd1bd1becff4) instead of image name:tag (mdzhang/docker-sinatra-hello-world)

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                    NAMES
f7e747d9d5bd        fd1bd1becff4        "shotgun myapp.rb ..."   6 minutes ago       Up 6 minutes        172.25.0.4:31637->4567/tcp, 172.25.0.4:31637->4567/udp   frontend-0b7a84bc-6644-f9e5-833e-c658aa1c3e7c

Nomad agent config

data_dir = "/var/lib/nomad"
bind_addr = "172.25.0.4"
log_level = "INFO"

client {
  enabled = true
  network_interface = "eth0"
  options {
    "docker.cleanup.image" = false
    "docker.privileged.enabled" = true
    "docker.volumes.enabled" = true
  }
}

consul {
  address = "consul1-dev:8500"
}

Job file (if appropriate)

$ cat sample.nomad
# Define a job called my-service
job "sample"{
    # Job should run in the US region
  region = "global"

  # Spread tasks between us-west-1 and us-east-1
  datacenters = ["dc1", "gc-europe-west1"]

  # run this job globally
  type = "service"

  # Rolling updates should be sequential
  update {
    stagger = "30s"
    max_parallel = 1
  }

  group "webs" {
    # We want 2 web servers
    count = 1

      # Create a web front end using a docker image
    task "frontend" {
      driver = "docker"
      config {
        image = "mdzhang/docker-sinatra-hello-world"
          port_map {
            web = 4567
          }
      }
      service {
        port = "web"
        check {
          type = "http"
            path = "/"
            interval = "10s"
            timeout = "2s"
        }
      }
      resources {
        cpu = 500
        memory = 128
        network {
          mbits = 10
            port "web" { }
        }
      }
    }
  }
}

[dadgar]

Hey, I understand the UX is worse but this change is required to ensure that the docker image being used is correct. By using the ID we can guarantee the image exists since we can account for the particular image. By name things can change under Nomad!

[sigil66]

Can you enumerate why PRECISELY this was done. Our product support now lists containers all over our infrastructure and the UX is really completely horrible now. Seeing containers with just the sha hash is absolutely untenable from an operational perspective.

[azizghuloum]

What's the harm in using both? Here are three containers. The first two deployed with docker stack deploy and the third deployed with nomad. Running docker ps should show a readable output and if you want more precise details, you can always use docker ps --no-trunc. No?

# docker ps
CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS              PORTS                                    NAMES
648ae46729ad        portainer/portainer:latest   "/portainer -H tcp:/…"   38 minutes ago      Up 38 minutes       9000/tcp                                 portainer_portainer.1.jk3ncv44e4xdwysk7pini7ffh
7ff81d51766c        portainer/agent:latest       "./agent"                38 minutes ago      Up 38 minutes                                                portainer_agent.0226la19lyjgo6jvbfly0nj0i.vcm9ggq4yn9wr3eesmhil5xg7
b3b0612c9aa0        8f59835f596c                 "/bin/bash /docker-e…"   About an hour ago   Up About an hour    2181/tcp, 2888/tcp, 3888/tcp, 7070/tcp   zk1-3b97f7b1-333f-7c62-19f0-1921374f1ecd

# docker ps --no-trunc
CONTAINER ID                                                       IMAGE                                                                                                COMMAND                                                                                                                     CREATED             STATUS              PORTS                                    NAMES
648ae46729adc8d0c2b99d80ac28803296ccef517183c99a56522ed04335d8a4   portainer/portainer:latest@sha256:07c0e19e28e18414dd02c313c36b293758acf197d5af45077e3dd69c630e25cc   "/portainer -H tcp://tasks.agent:9001 --tlsskipverify --ssl --sslcert /certs/portainer.crt --sslkey /certs/portainer.key"   34 minutes ago      Up 34 minutes       9000/tcp                                 portainer_portainer.1.jk3ncv44e4xdwysk7pini7ffh
7ff81d51766cdfd8226ff42a4afa1577c9e0a22ac3c125c918caa141a61d1bfe   portainer/agent:latest@sha256:468f58ed0ae81cdae7dd377d813efbce6011709d1fe3b539f515d2e0623c40be       "./agent"                                                                                                                   34 minutes ago      Up 34 minutes                                                portainer_agent.0226la19lyjgo6jvbfly0nj0i.vcm9ggq4yn9wr3eesmhil5xg7
b3b0612c9aa0369f6568034c28ab4238dceb6c5f63d764ecc7db25e4bac226c5   sha256:8f59835f596c6ea3e0c12b6870276af99f88caea4f27ac40010a49d366ddc916                              "/bin/bash /docker-entrypoint.sh"                                                                                           About an hour ago   Up About an hour    2181/tcp, 2888/tcp, 3888/tcp, 7070/tcp   zk1-3b97f7b1-333f-7c62-19f0-1921374f1ecd