groovy script to build docker image

What's with all the runtimes for JavaScript? The rolling or immediate rotation depends on your deployment resource settings. How is being used in ""? Upload your Dockerfile definition to your Github repository. Learn more about bidirectional Unicode characters. UPDATE: I've found a bug - I should have been setting emToo to action using CMD [], Our image will be mount a volume in /var/watchfile. List all image tags from ECR repository in JSON format. The docker images are usefull bexause they are cache to next build, but use a lot of disc space. Now lets see how to enhance the script and make it work with a private Docker images repository. The Pipeline we are defining have four stages: Please note you need to modify the code with your specific Docker Hub and Github details: Now we are ready to run the Pipeline and check the output if an error is present on any stage during the run. Or you can specify a defaul Run the HTTP request and easily parse the response JSON using native Groovy module JsonSlurper. * IMAGE_CREDENTIALS_ID - Image repo credentials id, * DOCKERFILE_PATH - Relative path to docker file in image repo, * REGISTRY_URL - Docker registry URL (can be empty), * ARTIFACTORY_NAMESPACE - Artifactory namespace (oss, cicd,), * REGISTRY_CREDENTIALS_ID - Docker hub credentials id. Whats dockerhub?Dockerhub is a public docker registry to store your docker images inside. You can learn more about docker in docker website, Why pipeline?You can reuse everything you did, put your jenkins code inside git project, the change in pipeline is showed in changes inside job history. Whats docker registy?Docker registry is a server to distribute versions of docker images. We will use it because it is the most easeful docker registry. He likes sharing his knowledge through writing for Hackernoon, DZone, Appfleet and many more, and while he is not doing that, he must be fishing or playing chess. How do I get into a Docker container's shell? Finally, we will cleanup the previously built image on the local server. In bash on OSX this works fine, but I found it didn't work if I tried it in cygwin on Windows 10, and my CMD/Powershell-fu is too weak to script it in a Windows native fashion. The final code will be (remember, using your environment): Awesome, the build is complete and the image will be send to docker registry. Flexible and customized actions split between stages are a good reason to try this feature. You can use either method both direct API calls using plain Groovy HTTP libraries (which is the most stable but verbose choice for the script) or curl with parsing the JSON response, or (the quickest method) use the AWS CLI. Logged in dockerhub, click on Create > Create Repository. The first one is to get the Dockerfile from our Github repository, The second one will build the image using. I have added a Hello World Jenkinsfile example to the repository so we let Jenkins search in https://github.com/cinqict/jenkinsdev. How is Docker different from a virtual machine? next iteraction the changes. To my surprise, I needed to google multiple references to set this up. 469). The excellent official Groovy reference will help you to create fantastic and flexible scripts for the input boxes and the build steps. It allows us to use any kind of Groovy script to retrieve external information, or even run a sub-process script like Python or Golang, which is stored on the Jenkins master instance. Put a name for your repository. As you can see, a lot of options are easily achievable. After you insert the script into the text box, which will look something like that: Try to run the job, and see what options does it list for this parameter. And put the wholeinit.groovy.ddirectory in your image using COPY in the Dockerfile: The--chown=jenkins:jenkinsoption is added here to resolve permission problems. For those using Amazon Elastic Container Registry, the procedure of retrieving Docker image tags is almost the same as for Google Cloud and Dockerhub. Lets take a look at how we can make use of this selection control to simplify a Jenkins Helm deployment to a Kubernetes cluster of any Helm chart. To complete the node.js pipeline, lets change this pipeline to merging with node.js build and test. It will run the docker build and use the jenkins build number in docker tag. Read this tutorial to complete wizard and install the locale and blueocean plugins: Quick start with jenkins in docker. //github.com/jenkinsci/docker/blob/master/README.md, //GitSCMSource(id, gitRepo, credentialsId, includes, excludes, ignoreOnPushNotifications), # Extended from https://github.com/jenkinsci/docker/blob/master/README.md. Be aware of the dot at the end. On Jenkins you need to create a new credential with your Docker Hub account details. Is it legal to download and run pirated abandonware because I'm curious about the software? Pass the Mysql_image_versionvariable from the earlier Docker image select example to the Helm install command like this: This way you installed the needed MySQL version from those you selected directly from Dockerhub, without ever visiting Dockerhub, by using the controls in Jenkins. More like San Francis-go (Ep. In this example, lets build a node.js application. You should get a sequential output of the different stages similar to this one: If everything is fine, you can check your Docker Hub repository for a new image tagged with the Jenkins build version matching with your Docker Hub registry: This was a basic example of how to work with Pipelines and integrate different components of your deployments. This is a good starting point to create your own image since it contains an extensive readme with all kinds of code snippets that you can use in your Dockerfile. (To the extent that they can exist in JavaScript). Pretty cool. In my case, the name is gustavoapolinario/docker-test. 468), Monitoring data quality with Bigeye(Ep. Top 10 Important Courses During the Undergraduate Degree in Computer SciencePart 1, Now we can set the config on each screen with just a call to useStatusBar and itll always be, Dont Let Excessive WordPress HTTP/S Requests Slow Your Site And Frustrate Customers. There are different ways to communicate with docker from groovy or java (sdk's are listed there https://docs.docker.com/engine/api/sdks/#other-languages): But as I see you are using maven so probably it will be easier for you to use awesome docker maven plugin (https://dmp.fabric8.io) which can build, push images, run containers etc. Puts everything into a final Groovy List object. To summarize, now we have these features enabled after installing the plugin: Lets demonstrate the first option: Query Dockerhub API to list all available image versions for an official MySQL container. Does intersection of subgroups preserve the property of being generated by transpositions? First, create a environment to save docker image informations. As you can see this example is not very interesting but you can see the steps to have your script dockerized. After build and deploy, delete the image to cleanup your server space. If we had DOKCER_IMAGE_TAG=v1.2.3in the Jenkins job, our spec part of the container image in this manifest will become this: Heres a quick explanation of consul-template flags that were used: Using these methods you can greatly simplify the CI/CD processes with Jenkins or any other tool that you use for deploying and managing Kubernetes resources (if your are interested in this topic, check out our blog on setting up a CI/CD pipeline with Jenkins, Nexus, Kubernetes). Whats docker?Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications. How to copy Docker images from one host to another without using a repository. Just keep playing and getting deeper on Jenkins Pipelines Orchestration. We assume that you have an active ~/.kube/config file, or otherwise existing kubeconfig, that you pass to all kubectlor helm commands in Jenkins jobs and pipelines. rev2022.8.2.42721. This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. From inside of a Docker container, how do I connect to the localhost of the machine? Following that you can skip allGeneralandBuild Triggeroptions and go straight to thePipelinesection. Go to jenkins home, click on job name (docker-test), click on Configure in job menu. Alter the job pipeline. If you want a private registry, you can pay for it. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. These processes can help to query an external service like MySQL database or some APIs, to select a list of items that will be displayed in the selection box during Jenkins job, like this: First, install the plugin to your Jenkins. You can even select the cluster and context using the Active Choice Parameter plugin, similarly to how we selected the Docker images). The user can see exactly which versions are available in the repository right now, and know whether the image was already built and uploaded, or not yet, minimizing the risk for attempting to deploy a nonexistent image version and a risk of typos. Here we are just usingdockerhub_id. The error happens because the Dockerfile is not finded. Now we can filter it, sort, extract data and modify it to prepare for output in the dynamic combo-box of the UI, it is extremely powerful and will allow you to automate the select-box of private Docker images and any other options like custom MySQL queries to run somewhere and return a list of information that you can use in your build job, or any other API calls to any service. KNN: Should we randomly pick "folds" in RandomizedSearchCV? Need to know how to use Groovy to automate a Docker build & runtime, https://docs.docker.com/engine/api/sdks/#other-languages, https://github.com/gesellix/docker-client, https://github.com/docker-java/docker-java, San Francisco? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Can my aliens develop their medical science, in spite of their strict ethics? Copyright 2022. A special thanks to Matthias Dring, who notify me about the lack of docker cleanup. Find centralized, trusted content and collaborate around the technologies you use most. Cannot retrieve contributors at this time. For the purpose of this tutorial, we used the upstream latest MySQL chart here, and passed the selected image version from Jenkins to Helm command for both helm install and helm upgrade use cases. 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So when you rebuild and start the image, Jenkins will start with my new project. Browse tohttp://localhost:80and you immediately see some manual steps which are nice for a first Jenkins experience, but not in your development environment. In which European countries is illegal to publicly state an opinion that in the US would be protected by the first amendment? If we run the scripts without parameters it can show us instructions or whatever you want. A server with Jenkins and Docker running on it (Jenkins user should be allowed to run Docker). Im a FullStack Developer, working now with DevOps automations. Hi everyone. This step is for who did this tutorial: Jenkins Starting with Pipeline doing a Node.js test. Does this JavaScript example create race conditions? Each of the techniques can be used in new and creative ways, in addition to other DevOps and development tools to speed up the processes of selecting, editing, substituting values in various templates, CLI commands or scripts. & then: Currently it doesn't seem to do anything after asking for the option - it's kinda bombing out. This is my first time scripting Docker using Groovy so I've ended up resorting to structures like: I wonder if Docker has a Java or Groovy API that I could plug into & do things like: Currently my script is determining the location of the project root & building up the Docker run command as a string, like: I get an option string from the user via a command line prompt, "Do you want QA or Dev?" Replace YOUR_PROJECT with google-containersand YOUR_IMAGE with cadvisor(or any random image from Google public repositories list) so you get a URL like this one: Put the script into the Groovy Script text area of theActive Choice Parameter and run the job. Change the environment variable registry to your repository name. Jenkins Pipeline is a powerful tool when you are using Jenkins to automate your deployments. To make consul-template write the variables into file, you can use this command: It does just one simple thing: substitutes the placeholders in template with the values of environment variables. filesystem and we specify we want to execute a command at the startup of the container ( groovy WatchFile.groovy). How to copy files from host to Docker container? What rating point advantage does playing White equate to? Go toCredentials Global Add credentialsand fill out the form with your username and password. In jobs home, you can click in circle and see the console output. The CLI is useful because it can format the output as JSON if needed, and will silently use the IAM Role of Jenkins master instance if your Jenkins master is also located on AWS to gain access to ECR image information. After docker repository created, get the name to use in our pipeline. In home of jenkins, click on New Item, select Pipeline and put the job name as docker-test. The target device, belonging to a non-technical staff member, is unlikely to have much in the way of a development environment on it. Lets test this using one of the public images. We iterate the results and pick only the name of each tag metadata item (which is a JSON with full details about each image that is associated with a tag), Authenticates with Google Cloud API to receive an access token (using gcloud tool). There are possibilities of creating numerous complex integrations through Pipelines as you go ahead. Created the file:init.groovy.d/disable-securit.groovy. Click on the green buttonClone or Downloadand copy the URL as you will need it later. It adds the following options to the parameter selection when you add a new job parameter (for both Freestyle and Pipeline type jobs): The Active Choices Parameter allows you to insert a Groovy script that will return any List (array) of values that will be displayed in the selection and passed to the build steps as an environment variable value. So far I have bash scripts in OSX which will create a Packager container that has a Java 8 SDK & maven installed, & which will compile the app into a war file. Heres an example of listing all tags for a private ECR repository image: Note: Its very similar to the GCR version of the script except the JSON structure that we receive and the CLI command. Also with these images we can use all features of Docker as mount volumes, Currently we develop on OSX & deploy to Tomcat on AWS managed by a 3rd party firm, and the non-technical staff use Windows laptops for their stuff. We need a Dockerfile to the build. Learn on the go with our new app. From the directory where we have both files we execute: jagedn/watchfile will be the name of our image. If all works fine youll have into your system a jagedn/watchfile image. To use this as a deploy operation instead of a fresh install, you would run: Also instead of the release image version, you can use the same technique for any options that you provide to the Helm chart during a deployment of Kubernetes applications. The technique uses Jenkins Groovy scripting to query external API to populate a parameter box dynamically with Docker image tags from Dockerhub or a GCR/ECR private repository. In this post well see how can use these images to build our own image and upload them to our account in Docker Hub, private Nexus, During startup I want Jenkins to load my Git repository containing the Jenkinsfile. Task 6:-How to create a Docker image using Docker File and push it on Docker Hub. Sorts all tag objects by their timestamp field to receive an ascending list by date. In this pipeline, We have 2 environment variables to change the registry and the credential easeful. This can be done by adding another Groovy scriptinitial_project.groovyto theinit.groovy.ddirectory. Unwraps the JSON to Groovy object so you can iterate the fields and manipulate data. You can modify mifichero.log and youll see in the I have a task to containerize a Spring & React web-app so that non-technical staff can make use of the container to demo the app to clients. For your images, you can also sort by numeric or alphabetic order instead of timestamp, depending on your project needs. Sends HTTP request to gcr.io/v2 API with your project and image repository names, and receives a JSON with all tags and their metadata like image creation timestamp which will be used to sort the list by date. With Kublr you can create any number of production ready Kubernetes clusters with a click of a button, then simply connect with Helm and Kubectl to deploy your applications utilizing all the features Kubernetes has to offer like Rolling deployments, Autoscaling (based not just on CPU/Memory/Network consumption but also on user-defined metrics that your API supplies to the scaling controller), metric collection, alerting and monitoring with Prometheus and Grafana, centralized logging with ElasticSearch and Kibana, Auto-healing, Sidecar container injection, Daemon Sets, scheduled jobs, easy to use API to query any information about your workloads and modify the settings of any resources through the API (like modifying the ConfigMaps and Secrets which are many times used as a mount in container to supply a file based config to the binaries that run in container). All Groovy files in this directory will be executed during startup. The docker command is executed and the jenkins found the command. Where's it going wrong? Google, etc, Well use a simple script to dump a file to console every 30 seconds in a forever while, As you can see in this post the script is not the mos important, First of all we need to write an instructions file Dockerfile to send to Docker. Include several containers in the same pipeline to keep different stages (like backend and frontend) or different environments (dev/prod). - 2022 Review, #16- 50+ Data Structure and Algorithms Interview Questions for Programmers, #17- Here Is the Best Linux Distro That I Have Ever Used, #18- How to Use DeepAR For AR Effects on Amazon IVS Live Streams, #19- How to Implement Trie (Prefix Tree) - Blind 75 LeetCode Questions, #20- Ultimate KOTOR 2 Planet Order: The Best Way to Traverse the Stars, Noonie and Startups Winners or Runners-Up, Get Featured on Product Hunt without Hunter, Remove Paywalled Stories from Google Search. The first step to take is to disable the welcome page called SetupWizard where you need to add a secret key. Now, we are ready to create our firstPipeline. You need to: Copy a secret key from the log file, Select plugins Login with a default username/password Create a project. user.dir just picks up the current directory, & the maven .m2 directory is in the user's home, usually. In addition to these tricks for more powerful Jenkins deployments, you can utilize consul-template standalone binary to render environment variables like the ones supplied by Jenkins select-boxes directly into Kubernetes YAML manifests like service, deployment, ingress, pod, or any other resource. All code can be found on https://github.com/cinqict/jenkinsdev. And because you specified a filter to show only Tagged images, it will not show the ones with no tags at all. How to get a Docker container's IP address from the host. Since jenkins/jenkins:lts image uses an ENTRYPOINT, this image will inherit that behavior. I get the run command output to screen, & if I copy/paste that into a command line in the scripts directory it falls over saying that the parent pom can't be found. https://medium.com/@cryptolukas/you-should-add-this-as-last-stage-or-post-task-d69fb384a361. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Automatically Support Sites You Love in Real Time, Quality Weekly Reads About Technology Infiltrating Everything. but usually its Dockerfile. We end up with the following Dockerfile: These Dockerfile and init Groovy scripts give a simple Jenkins image which you can run en destroy in seconds and is therefore very useful for developing Jenkinsfiles and init Groovy scripts. Enough reason for me to share my findings and results. Announcing Design Accessibility Updates on SO. Connect and share knowledge within a single location that is structured and easy to search. To do this, we will create a Dockerfile and some initial Groovy script to configure Jenkins during start up. Remember though that if I run the OSX bash script to do this, it works just fine. Change the environment variable registryCredential if necessary. Theres an easy way to fetch Docker images for Kubernetes deployment. You can use any public or private chart to follow the demo. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. new File(System.getProperty("user.home")+"/.m2"). Now you have a pipeline for test and create a docker image for your application. How to fit many graphs neatly into a paper? Is it really necessary considering the "wrong" position and normal behavior? Making statements based on opinion; back them up with references or personal experience. On Jenkins go to New Item Pipeline,type the name you want for this Pipeline project and then click OK. Thanks for the links! In a previous post (Docker and Groovy) we reviewed how can we use the official image of Groovy to execute our scripts Solution Architect | Technical Content Writer. Note that if you set the ID, you will need this specific ID to refer this credential from your scripts. We will resolve it soon. It will share the docker socket (used in your machine) with the container. Also, you can convert the select-box and its script into a Jenkins pipeline, and use in your existing pipelines with the help of Job DSL plugin. This technique is especially helpful for those who want to: In the following example, we make use of the Jenkins Active Choice Parameter plugin. The Active Choices Reactive Parameter adds more fun to the game because it will allow us to customize the parameters passed to the Groovy script itself! Jenkins Pipelineis a powerful tool when you are using Jenkins to automate your deployments. Rembember to execute the push if you want to upload the image to the repository: 2017 | Mixed with Bootstrap v3.1.1 | Baked with JBake v2.6.4. Make sure the helm install or upgrade commands will target your chosen cluster (select the right context when you are working with several clusters at the same time from same Jenkins jobs. Since downloading the plugins takes the biggest amount of time, we only want to do this if its really necessary. Thanks for contributing an answer to Stack Overflow! Should I cook mushrooms on low or high heat in order to get the most flavour? networking etc and in this way our scripts can works together with others containers. Fill in a Groovy List of results with image tags using the. We are instructing to Docker who image we can use as base (*groovy:2.4.12-jre8-alpine), we add a file from our With build number turn easeful to deploy or rollback based in jenkins. As a second step we dont want to login upon each restart, so we need to remove the required default credentials. # Remark: there is no CMD or statement. These are the replicas count with NEEDED_REPLICAS and Docker image version with DOCKER_IMAGE_TAG. You can build this image, but is already in dockerhub gustavoapolinario/jenkins-docker. Try our Kublr-in-a-Box and see yourself how convenient Kubernetes clusters management can feel like from a single intuitive user interface. Flexible and customized actions split between stages are a good reason to try this feature. About the author - Sudip is a Solution Architect with more than 15 years of working experience, and is the founder of Javelynn. So, I'm trying to do the script in something that'll run on both OSX, an AWS linux server & Windows 10, & being a Java developer myself I thought of Groovy.

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