Gitlab docker swarm
Also, Docker might ring some bells. And Gitlab loves Docker. Playing around with Swarm some months ago immediately made me want to combine all of them. The whole Kubernetes thing is pretty cool but sometimes just too much. Also i must admit that running Docker swarm is much easier than running a full blown Kubernetes stack.
Subscribe to RSS
And Docker commands in swarm mode are almost the same, so hurdles for developers are almost gone if they are already using Docker. Gitlab can and should be used to build Docker images. So we have some mechanism which builds our image for CI, e. Now, your CI runs some tests, linting and so on, probably creating artifacts or whatever. With Docker, of course. Using the image we just built.
We now have a container which runs an app, e. We now want to see, if things are really working or discuss things with the team or present it to a responsible person or …. For development, we are just using unsecured Swarm nodes.
You get the idea? And Docker commands in swarm mode are almost the same, so hurdles for developers are almost gone if they are already using Docker ; Gitlab builds Docker Gitlab can and should be used to build Docker images. Gitlab uses Docker Now, your CI runs some tests, linting and so on, probably creating artifacts or whatever.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. The jobs are running all fine within Gitlab, but the Docker Swarm Deploy command does not update all Services. Let's say I'm running five Services, after the Deploy command only two of them are still running.
Is this the right way to update Container of a Swarm? I tried already removing the Stack first before deploying, but got the same result. Also added some Sleep 25 as last command but did not help. Learn more. Asked 11 months ago. Active 11 months ago. Viewed times. Schwarz Schwarz 15 4 4 bronze badges.
Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home?
Featured on Meta. Community and Moderator guidelines for escalating issues via new response…. Feedback on Q2 Community Roadmap.Portainer is a web UI user interface that allows you to see the state of your Docker services in a Docker Swarm mode cluster and manage it. Follow this guide to integrate it in your Docker Swarm mode cluster deployed as described in DockerSwarm. Create an environment variable with the domain where you want to access your Portainer instance, e.
Make sure that your DNS records point that domain e. It's common to name the file docker-compose.
Make sure you login and create your credentials soon after Portainer is ready, or it will automatically shut down itself for security. If you didn't create the credentials on time and it shut down itself automatically, you can force it to restart with:. This guide on Portainer is adapted from the official Portainer documentation for Docker Swarm mode clustersadding deployment restrictions to make sure the same volume and database is always used and to enable HTTPS via Traefik, using the same ideas from DockerSwarm.
Docker Swarm Rocks. Portainer web user interface for your Docker Swarm cluster Portainer is a web UI user interface that allows you to see the state of your Docker services in a Docker Swarm mode cluster and manage it. Info This is just a standard Docker Compose file.
Here it's named just portainer.Last year GitLab introduced the Review Apps feature. Review Apps are app environments that are created dynamically every time you push a new branch up to GitLab.
As a bonus point the app environments are automatically deleted when the branch is deleted. As it turns out, it is rather simple to deploy Docker containers as a Review App. In our scenario the GitLab Runner for building the Docker image and the GitLab Runner for "running" the Review Apps make use of the shell executor, that way we do not have to deal with Docker-in-Docker issues.
Besides installing the gitlab-ci-multi-runner package we also installed Docker and docker-compose. First of all, we define two build stages in the. This will create the Docker image and push it to our Sonatype Nexus instance which serves as a private Docker registry for us.
That way, we end up with a Docker image per branch. Downside: you cannot use characters in the branch name which are no valid Docker version identifiers. I still need to figure out a fix for this. The deploy stage consists of two jobs: one for deploying the container, the other for undeploying the container:.
When this code is run it will simply pull the latest image from the private Docker registry and run it. Since the gitlab-runner user will push the image to the registry the user needs an account there and needs to be authenticated against the registry. I could not find a way how to configure the registry credentials via the. Currently we do not have many servers - virtual machines in our case - so that approach is fine, but does not scale in the future.
When running the container we set a fixed name for the container. That way, we can easily stop it when it comes to the undeploy job. We also define some Traefik labels as we use Traefik in front of the docker daemon to route the requests.
Traefik itself runs in a container as well. The Traefik container is launched like this:. We do not use any fancy Traefik configuration, just the defaults for the docker backend. Since the Review Apps server runs in our intranet and uses our intranet domain name we were not able to use the Let's Encrypt support built in Traefik. Instead, we were required to generate a self-signed SSL certificate and mount that in the Traefik container. The undeploy job is the final piece of the puzzle.
To undeploy a Review App we simply stop and remove the container by the defined name. That way the docker instances will always start on the right server. His primary focus is everything related to web development as well as automation techniques ranging from code generation to deployment automation.
This post was originally published on blog. Cover image by Guillaume Bolduc on Unsplash. No credit card required. Have questions?
Contact us.Dockerfile to build a GitLab image for the Docker opensource container platform. GitLab CE is set up in the Docker image using the install from source method as documented in the the official GitLab documentation. See Contributors for the complete list developers that have contributed to this project.
Docker is a relatively new project and is active being developed and tested by a thriving community of developers and testers and every release of docker features many enhancements and bugfixes. Given the nature of the development and release cycle it is very important that you have the latest version of docker installed because any issue that you encounter might have already been fixed with a newer docker release.
Install the most recent version of the Docker Engine for your platform using the official Docker releaseswhich can also be installed using:. If it does than there is not much that I can help you with. You can either stick with selinux disabled not recommended by redhat or switch to using ubuntu. Please refer to the GitLab hardware requirements documentation for additional information.
Automated builds of the image are available on Dockerhub and is the recommended method of installation. Note : Builds are also available on Quay. The quickest way to get started is using docker-compose. These values are used for the following:. Alternatively, you can manually launch the gitlab container and the supporting postgresql and redis containers by following this three step guide.Traefik Proxy v2.0 Docker Basic Tutorial
You should now have the GitLab application up and ready for testing. If you want to use this image in production then please read on. The rest of the document will use the docker command line. You can quite simply adapt your configuration into a docker-compose. To avoid losing any data, you should mount a volume at. Note that if you are using the docker-compose approach, this has already been done for you.
Deploy GitLab CE
SELinux users are also required to change the security context of the mount point so that it plays nicely with selinux. Volumes can be mounted in docker by specifying the -v option in the docker run command.
GitLab uses a database backend to store its data. You can configure this image to use PostgreSQL. This is also controlled via environment variables.
Additionally since GitLab 8. You can link this image with a postgresql container for the database requirements. The alias of the postgresql server container should be set to postgresql while linking with the gitlab image. When using postgresql image in production you should mount a volume for the postgresql data store.
This is made possible using the magic of docker links and works with the following images:. GitLab uses the redis server for its key-value data store. The redis server connection details can be specified using environment variables. The internal redis server has been removed from the image. Please use a linked redis container or specify a external redis connection. The image can be configured to use an external redis server. The configuration should be specified using environment variables while starting the GitLab image.
You can link this image with a redis container to satisfy gitlab's redis requirement. The alias of the redis server container should be set to redisio while linking with the gitlab image.GitLab Docs Choose version.
GitLab Omnibus Runner Charts. Prerequisites Set the installation folder Run the image Where is the data stored? In the following examples we are using the image of GitLab CE. Note: Using a native Docker install instead of Docker Toolbox is recommended in order to use the persisted volumes. Caution: We do not officially support running on Docker for Windows.
There are known issues with volume permissions, and potentially other unknown issues. If you are trying to run on Docker for Windows, please see our getting help page for links to community resources IRC, forum, etc to seek help from other users. Note: GitLab will reconfigure itself whenever the container starts. Note: The initialization process may take a long time. You can track this process with the command sudo docker logs -f gitlab.
Note: The format for publishing ports is hostPort:containerPort. To propose functionality that GitLab does not yet offer. To further help GitLab in shaping new features. If you didn't find what you were looking for.
Deploy to Docker Swarm using Gitlab CI
If you want help with something very specific to your use caseand can use some community support. If you have problems setting up or using this feature depending on your GitLab subscription.
To view all GitLab tiers and features or to upgrade. If you want to try all features available in GitLab. If you want to try all features available in GitLab self-managed. If you spot an error or a need for improvement and would like to fix it yourself in a merge request. If you would like to suggest an improvement to this doc. If you want to give quick and simple feedback on this doc.And then deploy it to your production Docker Swarm mode cluster using another GitLab CI runner configured in the same cluster.
You probably want to run the GitLab runner in Docker standalone, even when you deploy it in a Docker Swarm mode Manager Node to deploy production stacks. Technical details : This is because the Runner configurations will persist in the created container after the registration. If you create the GitLab Runner as a Docker Swarm mode service, your Runner could be deployed to a different Docker Swarm mode Manager Node the next time, or the container might be destroyed and replaced by a new one even when running on the same machineand then you would lose the registration configuration.
GitLab CI is controlled using a. To learn more about it, you can check GitLab CI's official documentation. If you have a Docker Swarm mode cluster with a main Traefik proxy set up using the ideas from DockerSwarm. To see more complete examples, check the Project Generators at DockerSwarm. Docker Swarm Rocks. You could also test and build your code on "runners" in dedicated, isolated machines.