Jenkins push docker image to nexus

It is of no doubt that Automation in general is going to be the norm — automation of any manual process in any industry. For this post, we are going to narrow down to automation for a software project. Read this. Below is a model that I saw in some forums where we can deploy a software change through a series of steps all the way through CIbuild a container image, deploy the container image to AWS. Howeverwhat if we already had some pieces in place on-premises that we would want to leverage and NOT have to pay for CircleCI, dockerhub, docker cloud etc.

So in the above diagram, the below holds. Specifically how we can leverage Jenkins and Sonatype Nexus. If you use jenkins pipeline, that also shows stage views, then this should be relatively easy. The below pipeline script is an example.

Jenkins and Nexus for Micro-Service Deployments

We can use Jenkins to deploy the containers to our targeted deployment platforms — aws, azure, rackon-premises etc. Jenkins-ec2 deploy. Jenkins dockerhub. Email: pradeep seleniumframework.

jenkins push docker image to nexus

Thanks for the detailed description, Pradeep! Or is there some automated way to cause the pipeline of the downstream microservice to wait until the required version of the upstream service is available?

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Background It is of no doubt that Automation in general is going to be the norm — automation of any manual process in any industry. The flow is basically this A nodejs application change is pushed to github Github post commit hook kicks off a CI jobs that runs in circleci circleci runs unit tests and then triggers a build job preconfigured in dockerhub Dockerhub reads Dockerfile in root directory of source and builds the container image and then kicks calls a webhook on tutum now dockercloudwhich has a service and node cluster pre-configured Docker cloud is already integrated with AWS credentials are configured and can pick an AMIinstantiate it, bring up the docker engine on itthen take the previously created container image and start the container on that ec2 instance.

Also the service in docker cloud will map a DNS entry so as to be able to access the application on a certain port So as you can see, a change in source code triggers a series of automated stepsthat ultimately results in that change being deployed to production i. How does your existing Jenkins job change? See Jenkins plugins that integrate with each of the above platforms. Previous Post Continuous Integration and automation for mobile apps Next Post Mac-mini musings — X11 forward and connect without display monitor.

Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email required Address never made public. Name required. Automate,automate and automate. Post to Cancel. Post was not sent - check your email addresses! Sorry, your blog cannot share posts by email. By continuing to use this website, you agree to their use. To find out more, including how to control cookies, see here: Cookie Policy.Now if we hit Enter the password you copied earlier to start the engines!

This means that the definition of the pipeline basically the steps to run for the job will be read from the projects repository.

This is really cool because it moves some of the configuration of the job out of Jenkins and into the repository of the project itself. At this point we can run the build and Jenkins will check out the code and try to read the pipeline definition from the Jenkinsfile in the code repository.

Fill in the placeholders with your own values. In this case you will need two credentials; one to login to the docker registry and one to login to your VCS to checkout the code. This Jenkinsfile is really simple, it just checks out the codebase, reads the current commit hash from the repo, builds the docker image and then pushes it to the registry.

Notice that we are also pushing a tag of the commit id, this is totally optional but allows for some more controlled deploys. At the end it should look something like this:. If all goes well you should see the EC2 slave booting up automatically and then the docker image being built on it. It is also possible to deploy a Jenkins server including all configuration using Ansible, this has the huge advantage that you can destroy the entire Jenkins server and be able to redeploy it completely, configuration and all, at any moment.

This makes it much easier to track changes to Jenkins configs and totally removes the need to perform backups of Jenkins. It also completely removes the need to manually configure jenkins through the UI. Want updates? Subscribe to get notified whenever a new post comes out.

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Email Address.Comment 0. In this exercise, we are going to learn how to publish Docker images to a private Nexus repository with the help of the Maven Jib plugin.

Until recently, you had to install the Docker daemon on the box from where you want to generate Docker images. The Jib plugin allows you to build the Docker image without installing Docker daemon. This is important for build machines using task managers like Jenkins and Teamcity, as setting up Docker is another extraneous step. The Nexus repository manager comes into the picture here as it can host all types of artifacts starting from jar, Docker images, npm packages, and more.

This exercise assumes you have basic knowledge about Docker and repositories. We will first set up the Nexus repository on a local box followed by setting up the build process to publish the image to the same nexus repository.

Docker is a lightweight container used for publishing apps with the entire ecosystem packaged in a single bundle. Jib is a framework to build and compile Docker images with and without the Docker daemon available on system. There are two plugins available for this, one for Maven and the other for Gradle.

In this exercise, we are going to use the Jib Maven plugin to publish a Docker image. Download Nexus from below location, you need to choose your operating system version. If step three fails due to port conflict, there will be a file created by Nexus Start called nexus.

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You need to change the port to any port non-conflicting port Note this file will be created only when Nexus starts up successfully. Login to Nexus as admin. Your password is in the admin. You need to find the default password for admin, which you can find at this location.

Once you login to the system, click on the "Go to repositories" tab from the left menu and click the "Create repository" button shown below.

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Now enter the registry name and the HTTP port and keep the rest as default and click on the "Create repository" button at the bottom part of the screen. This HTTP port is used in pom. Now open the Spring Initializer project in the editor of your choice. I used Visual Studio Code but you can use any one. We need to add the below things to pom.

Jib plugin and right entries for the Docker registry that we created in the prerequisite section. Config part is very important as this step will make or break this exercise. Find the plugins section under pom. Note you need to change the password to the same as what you created when setting up Nexus. Save the file and run the below command from the command line, under the directory where you extracted the Spring Boot application.

The above command will build your first Docker image without installing the Docker daemon on your machine and push the to the Nexus repo. Here, the idea is to get things started and see things end to end. By completion of this exercise you have learned setting up a Nexus repository manager running over HTTP.

You also learned how to create a Docker repo under Nexus. Lastly, we modified pom. Over a million developers have joined DZone. Let's be friends:. DZone 's Guide to. Take a look at how to create a Nexus repository manager using HTTP and how to set up a Docker repository to publish Docker images using the jib plugin.

Free Resource.They can be a nightmare to debug and monitor. They can add a layer of complexity and instability to an otherwise stable application. Unless you understand immutability, you can end up trying to fit a square peg in a round hole To make things worse, some experiences with Docker in production are less than commendable. While containers are clearly not the answer to everything, they can be absolutely fantastic.

They usually make shipping and deploying your application much easier. They make consistent testing much, much easier. Containerising your application is like shoving your app and all its dependencies into a box. Except the box is infinitely replicable. Whatever happens in the box, stays in the box - unless you explicitly take something out or put something in.

And when it breaks, you'll just throw it away and get a new one. Containers make your app easy to run on different computers - ideally, the same image should be used to run containers in every environment stage from development to production. This post is your guide for building a Docker image, and then setting up Jenkins 2 to build and publish the image automatically, whenever you commit changes to your code repository. For this guide, we'll be using a very basic example: a Hello World server written with Node.

Place this in a main. We'll also need a package. To be able to build a Docker image with our app, we'll need a Dockerfile.

You can think of it as a blueprint for Docker: it tells Docker what the contents and parameters of our image should be. Docker images are often based on other images. For this exercise, we are basing our image on the official Node Docker image. This makes our job easy, and our Dockerfile very short. The grunt work of installing Node and its dependencies in the image is already done in our base image; we'll just need to include our application. The Dockerfile is best stored with the code - this way any changes to it are versioned along with the actual application code.

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Additionally, our image inherits the following actions from the official node onbuild image:. To build the image on your own computer, navigate to the project directory the one with your application code and the Dockerfileand run docker build :. This instructs Docker to build the Dockerfile in the current directory with the tag getintodevops-hellonode You will see Docker execute all the actions we specified in the Dockerfile plus the ones from the onbuild image.

If the above build command ran without errors, congratulations: your first Docker image is ready! The above command tells Docker to run the image i nteractively with a pseudo- t ty, and map the port in the container to port in your machine. Now that we know our Docker image can be built, we'll want to do it automatically every time there is a change to the application code.

For this, we'll use Jenkins.

Docker Private Registry with Nexus

Jenkins is an automation server often used to build and deploy applications. Note: this guide assumes you are running Jenkins 2. Just like Dockerfiles, I'm a firm believer in storing Jenkins pipeline configuration as codealong with the application code.

It generally makes sense to have everything in the same repository; the application code, what the build artifact should look like Dockerfileand how said artifact is created automatically Jenkinsfile. We'll need to tell Jenkins what our stages are, and what to do in each one of them. For this we'll write a Jenkins Pipeline specification in a Jenkinsfile. Place the following into a file called Jenkinsfile in the same directory as the rest of the files:.

That's the entirety of our pipeline specification for Jenkins. Now, we'll just need to tell Jenkins two things:.If you've got a moment, please tell us what we did right so we can do more of it. Thanks for letting us know this page needs work. We're sorry we let you down. If you've got a moment, please tell us how we can make the documentation better.

If you have a Docker image available in your development environment, you can push it to an Amazon ECR repository with the docker push command. Authentication tokens must be obtained for each registry used, and the tokens are valid for 12 hours. For more information, see Registry Authentication. If your image repository does not exist in the registry you intend to push to yet, create it. For more information, see Creating a Repository.

Identify the image to push.

jenkins push docker image to nexus

Run the docker images command to list the images on your system. You can identify an image with the repository:tag value or the image ID in the resulting command output. Tag your image with the Amazon ECR registry, repository, and optional image tag name combination to use.

The repository name should match the repository that you created for your image. If you omit the image tag, we assume that the tag is latest. You can apply up to tags per image in Amazon ECR.

Javascript is disabled or is unavailable in your browser. Please refer to your browser's Help pages for instructions. Did this page help you? Thanks for letting us know we're doing a good job! Pushing an Image.

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Document Conventions.This is the third and last part of a series of posts on Nexus 3 and how to use it as repository for several technologies. Part 1. Part 2. Check out the first part of this series to see how we installed and ran Nexus 3 using a single docker command. Just do that and the installation is done.

What we will do: — create a private hosted repository for our own images — create a proxy repository pointing to Docker Hub — create a group repository to provide all the above repos under a single URL. I suggest you to create a new blob store for each new repo you want to create. But this is not mandatory for it to work. Important to notice: the Docker repo requires 2 different ports. We are going to use for pull from the proxy repo and for pull and push to the private repo. Next time you download the same dependency, it will be cached in your Nexus.

This step is actually optional to use Nexus 3 as a Docker repository, because we can stick to pulling and pushing to the proxy and hosted repositories as will be discussed later. How exactly to do this config depends on your operating system, so you should check dockerd documentation. You have to restart the daemon after setting this sudo systemctl restart docker. To push your own images to your repo, you have to tag the image with a tag that points to the repo. This is strange to me, since I was trying to think about Docker tags the same way I do about Git tags, but they seem be somewhat different notice port being used :.

Both ports will work. I suspect that is because using port will connect directly to the hosted repo, whilst using port will connect to the group repo, which contains the hosted repo. I suggest you to stick to port to avoid duplicate images in your machines. If you chose to stick with port to pull your own images, you probably could skip creating the group repo, if you prefer.

How to Publish Docker Images on a Private Nexus Repository Using Jib Maven Plugin

Tags: DockerNexus RepositoryProduct. All rights reserved. Includes the third-party code listed here. Sonatype and Sonatype Nexus are trademarks of Sonatype, Inc. M2Eclipse is a trademark of the Eclipse Foundation.

All other trademarks are the property of their respective owners. Sonatype Blog.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. New to nexus. We are trying to automate build process Build docker images and publish them to Nexus3 repository.

I have a nexus repo and Jenkins Job is configured with docker-maven plugin also I have provided docker:push maven target.

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Not sure how to push now? Docker stores images into a Docker server. It connects to it using it's own protocol.

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Nexus is a different paradigm and not compatible as is. Docker Maven Plugin's push goal pushes to a remote Docker repository, e.

jenkins push docker image to nexus

DockerHubor GitLab. That is different from "deploying" Maven artifacts to Nexus. Docker allows to get an image in a form of a. Maybe someone created some kind of "wagon", a thing that would to allow maven to "resolve" these files which you would declare as dependencies. But the whole idea is probably not really advisable following. As I said, Maven and Docker's approaches are different.

Edit: So it turns out that somebody did - and it was the creators of Nexus. As pointed out by masseyb.

How to Publish Docker Images on a Private Nexus Repository Using Jib Maven Plugin

But after quick reading, it turns out that it's just a normal Docker registry, just branded and and bundled with Nexus. I assume that the poster asked about how to use Nexus Maven repository to store Docker images. This article about using multiple registries may come handy, too. Learn more. Build and Publish docker images to Nexus3 Ask Question.

Asked 3 years, 1 month ago. Active 8 months ago. Viewed 1k times.

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Please help me. Active Oldest Votes. If you mean Nexus Maven Repository If you have the Nexus Docker registry I think you can also docker login to that; before running Maven. The push goal will then push to that repository. Downvoted because nexus can be configured as a docker registry. OP can create a hosted docker repository in nexus eventually add a reverse proxy in front of ittag the images with the server name needs to be resolved and use the docker:push maven target to push the images.

Upvoted edited answer. I agree, my understanding ref. A side note that nexus3 does a lot tbh ref.