gitlab_ci_swarm

Gitlab pipeline for a docker project with deployment to a swarm cluster

Configure GitLab

Go to project, Settings -> CI/CD -> Variables

Add following variables:

CI_REGISTRY - Docker registry URL

CI_REGISTRY_USER - Docker registry user

CI_REGISTRY_PASS - Docker registry password

SWARM_HOST - Docker Swarm address (something like tcp://192.168.0.1:2376)

Configure Docker Swarm master

Change the Docker daemon settings to listen on the TCP port. On Alpine Linux change /etc/conf.d/docker:

DOCKER_OPTS="--host unix://var/run/docker.sock --host tcp://0.0.0.0:2376"

Configure Swarm Nodes

Connect to the Docker Swarm master and add a tag to the desired node:

docker node update --label-add TAG=prod swarm-node

Run pipeline

Make commit, add tag, and push changes to the server

git commit -m 'Changes list'

git tag release-v1.2

git push origin master --tags