Building docker image in gitlab-ci using kubernetes runner

Infrastructure as Code & Cloud Native
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1

Am trying to build a docker image using default template.

This file is a template, and might need editing before it works on your project.

build-master:

Official docker image.

image: docker:latest
stage: build
services:
- docker:dind
variables:
DOCKER_HOST: tcp://docker:2375
DOCKER_DRIVER: overlay2
before_script:
- cat /etc/hosts
- docker login -u “$CI_REGISTRY_USER” -p “$CI_REGISTRY_PASSWORD”
script:
- docker build -t “$CI_REGISTRY_IMAGE” .
- docker push “$CI_REGISTRY_IMAGE”
only:
- master

However when running the same,

  • [new branch] master → origin/master
    Checking out 31bda054 as master…

Skipping Git submodules setup
$ cat /etc/hosts

Kubernetes-managed hosts file.

127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
fe00::0 ip6-mcastprefix
fe00::1 ip6-allnodes
fe00::2 ip6-allrouters
10.0.3.24 runner-64-9yy4e-project-3-concurrent-0vvqs9
$ docker login -u “$CI_REGISTRY_USER” -p “$CI_REGISTRY_PASSWORD”
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
error during connect: Post http://docker:2375/v1.40/auth: dial tcp: lookup docker on 10.3.240.10:53: no such host

Note: am using Kubernetes runner from gitlab and the helm has been setup as previledged mode.

2

Got the same error… pipeline was working file yesterday.

3

Same issue here, it suddenly stopped working this morning. Non k8s runner though.

I have this at the beginning of my pipeline:

Using docker image sha256:381e1d0bc6ef1b9619690dbc0de477588c4a1f14fc781e31b0123ac6f421c25c for docker:dind ...
Waiting for services to be up and running...

*** WARNING: Service runner-FyVxBitE-project-5-concurrent-0-docker-0 probably didn't start properly.

Health check error:
service "runner-FyVxBitE-project-5-concurrent-0-docker-0-wait-for-service" timeout

Health check container logs:


Service container logs:
2019-08-02T12:14:22.998254366Z time="2019-08-02T12:14:22.998142357Z" level=info msg="Starting up"
2019-08-02T12:14:22.998518193Z time="2019-08-02T12:14:22.998470969Z" level=warning msg="[!] DON'T BIND ON ANY IP ADDRESS WITHOUT setting --tlsverify IF YOU DON'T KNOW WHAT YOU'RE DOING [!]"
2019-08-02T12:14:22.999612287Z failed to load listeners: listen tcp: address tcp/2375/: unknown port

Edit: Docker:dind stops working after 12.1.0 update

4

@aldrine since you’re using k8s, see here: https://docs.gitlab.com/ee/ci/docker/using_docker_build.html#use-docker-in-docker-workflow-with-docker-executor

  # Note that if you're using the Kubernetes executor, the variable should be set to
  # tcp://localhost:2375/ because of how the Kubernetes executor connects services
  # to the job container
  # DOCKER_HOST: tcp://localhost:2375/
  #
  # For non-Kubernetes executors, we use tcp://docker:2375/