Openshift cicd

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Openshift cicd

The Job of the deployment pipeline is to prove that the release candidate is unreleasable. Pipelines allow teams to automate and organize all of the activities required to deliver software changes. By rapidly providing visible feedback, teams can respond and react to failures quickly.

In this chapter we are going to learn about using pipelines inside OpenShift so that we can connect deployment events to the various upstream gates and checks that need to be passed as part of the delivery process. Log in to OpenShift as our user and create a new project. Add the Jenkins ephemeral templated application to the project—it should be an instant app in the catalog which you can check from the web-ui by using Add to Project or from the CLI:.

If you have persistent storage and you want to keep your Jenkins build logs after Jenkins Container restarts, then you could use the jenkins-persistent template instead.

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In the web-ui continue to the overview page. There are two services created: one for the Jenkins web-ui and the other for the jenkins-jnlp service. The example application contains a MySQL database; you should see this database pod spin up once the image has been pulled.

There are a few moving pieces required to set up a basic flow for continuous testing, integration, and delivery using Jenkins pipelines.

Within Jenkins, the main components and their roles are as follows:. Jenkins OpenShift Pipeline plug-in: construction of jobs and workflows for pipelines to work with Kubernetes and OpenShift. The product documentation is a great place to start for more in-depth reading.

You can see a build strategy of type Jenkins Pipeline as well as the pipeline as code that is commonly named a Jenkinsfile. The pipeline is a Groovy script that tells Jenkins what to do when your pipeline is run. The commands that are run within each stage make use of the Jenkins OpenShift plug-in. So you can see that for a build and deploy we:.

Start the deployment referenced by the deployment configuration called nodejs-mongodb-example :. A step that schedules a task to run by adding it to the Jenkins build queue. It may be run on the Jenkins master or slave in our case, a container. Commands outside of node elements are run on the Jenkins master. By default, pipeline builds can run concurrently. A stage command lets you mark certain sections of a build as being constrained by limited concurrency.

In the example we have two stages build and deploy within a node. When this pipeline is executed by starting a pipeline build, OpenShift runs the build in a build pod, the same as it would with any source to image build.

There is also a Jenkins slave pod, which is removed once the build completes successfully. It is this slave pod that communicates back and forth to Jenkins via the jenkins-jnlp service. To learn more about Jenkins pipeline basics, see the Jenkins pipeline plug-in tutorial for new users.

If you want a deeper view of the pipeline in Jenkins, select the View Log link on a Pipeline build in your browser. This plug-in integrates the OpenShift OAuth provider with Jenkins so that when users attempt to access Jenkins, they are redirected to authenticate with OpenShift.

After authenticating successfully, they are redirected back to the original application with an OAuth token that can be used by the application to make requests on behalf of the user. There are various editors and drill-down screens within Jenkins available for pipeline jobs. You can browse the build logs and pipeline stage views and configuration. If you are using a newer version of Jenkins, you can also use the Blue Ocean pipeline view.

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By default, the Jenkins installation has preconfigured Kubernetes plug-in slave builder images. You can convert any OpenShift S2I image into a valid Jenkins slave image using a template; see the full documentation for extensions.By setting up a tool chain that continuously builds, tests, and stages software releases a team can ensure that their product can be reliably released at any time. OpenShift can be an enabler in the creation and managecment of this tool chain.

First we will start by installing Jenkins to run in a pod within your workshop project. Because this is just a workshop we use the ephemeral template to create our Jenkins sever for a enterprise system you would probably want to use the persistent template.

openshift cicd

Follow the steps below:. It will be used to define our application lifecycle and to let our Jenkins jobs perform commands on our OpenShift cluster. It is possible that the plugin is already installed in your environment, so use these steps to verify if it is installed and install it if is not.

You can read more about the plugin here. In this example pipeline we will be building, tagging, staging and scaling a Node. And keep in mind that these principles are relevant whether your programming in Node. Inside of Jenkins, you will click the dev pipline that was created we created. On the left-hand side you will see an option to. When you click this, the first job will begin to run. When this job completes, a second job will execute. This second job cause the deployment to initiate of our test application and then scale the test application to 2 pods.

The new tag can then be used for automatic or manual builds of the new test application. Coming soon… Read more about usage of Jenkins on OpenShift here. Read more about the concepts behind pipelines in Jenkins here. Start by creating a new project To begin, we will create a new project.

CLI Steps. Web Console Steps. Browse to original landing page, and click "New Project". Fill in the name of the project as "cicd" and click "Create". Click "Add to Project", click "Browse Catalog" select "jenkins-ephemeral". Find the"Openshift Pipeline Jenkins Plugin".Build, deploy and manage your applications across cloud- and on-premise infrastructure. Single-tenant, high-availability Kubernetes clusters in the public cloud.

The fastest way for developers to build, host and scale applications in the public cloud.

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Toggle nav. Whether you are creating a simple website or a complex web of microservices, use OpenShift Pipelines to build, test, deploy, and promote your applications on OpenShift. This example demonstrates how to create an OpenShift Pipeline that will build, deploy, and verify a Node.

If Jenkins auto-provisioning is enabled on your cluster, and you do not need to make any customizations to the Jenkins master, you can skip the previous step.

Lab 8 - CI / CD Pipeline

For more information about Jenkins autoprovisioning, see Configuring Pipeline Execution. Now that the Jenkins master is up and running, create a BuildConfig that employs the Jenkins pipeline strategy to build, deploy, and scale the Node. Once you create a BuildConfig with a jenkinsPipelineStrategytell the pipeline what to do by using an inline jenkinsfile. This example does not set up a Git repository for the application. For this example, include inline content in the BuildConfig using the YAML Literal Stylethough including a jenkinsfile in your source repository is the preferred method.

The completed BuildConfig can be viewed in the OpenShift Origin repository in the examples directory, nodejs-sample-pipeline. The previous example was written using the declarative pipeline style, but the older scripted pipeline style is also supported.

If you do not want to create your own file, you can use the sample from the Origin repository by running:. Once the pipeline is started, you should see the following actions performed within your project:.

A new application, and all of its associated resources, will be created from the nodejs-mongodb-example template. A deployment will be started using the nodejs-mongodb-example deployment configuration. If the build and deploy are successful, the nodejs-mongodb-example:latest image will be tagged as nodejs-mongodb-example:stage.

The best way to visualize the pipeline execution is by viewing it in the OpenShift Web Console. With OpenShift Pipelines, you can launch Jenkins in one project and then have the OpenShift Sync Plugin monitor a group of projects in which the developers work.

The following sections outline the steps to complete this process. Avoid monitoring the same project from multiple Jenkins deployments running the OpenShift Sync Plugin. There is no coordination between those instances and unpredictable results can occur. Products Overview Features Pricing.

Show more results. OpenShift Pipeline Builds. Introduction Whether you are creating a simple website or a complex web of microservices, use OpenShift Pipelines to build, test, deploy, and promote your applications on OpenShift.

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Creating the Jenkins Master To create the Jenkins master, run:. The Pipeline Build Configuration Now that the Jenkins master is up and running, create a BuildConfig that employs the Jenkins pipeline strategy to build, deploy, and scale the Node.

Create a file named nodejs-sample-pipeline. The Jenkinsfile Once you create a BuildConfig with a jenkinsPipelineStrategytell the pipeline what to do by using an inline jenkinsfile. Starting the Pipeline Start the pipeline with the following command:. A job instance is created on the Jenkins server.

A slave pod is launched, if your pipeline requires one. The pipeline runs on the slave pod, or the master if no slave is required. A build will be started using the nodejs-mongodb-example BuildConfig.

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The pipeline will wait until the build has completed to trigger the next stage. The pipeline will wait until the deployment has completed to trigger the next stage. To add projects to monitor, either: Log into the Jenkins console.November 14, January 28, adewey. This is a practice that allows teams to quickly and automatically test, package, and deploy their applications. Jenkins listens to specific inputs often times a git hook following a code check-in and when triggered will kick off a pipeline.

Organizations often have more complex pipelines, incorporating tools such as artifact repositories and code analyzers, but this provides a high-level example. Use cases in the enterprise, however, are much more complex. In addition to the Jenkins server, admins will often need to deploy a code analysis tool such as SonarQube and an artifact repository such as Nexus.

In order to ensure that the outcome is produced quickly, error-free, and exactly as it was before, a method of automation should be incorporated in the way your infrastructure is created. You may find these tools to be valuable as well, or you may find that something else works better for you and your organization. In the video we discussed how this plugin can be used to create Jenkins pipelines and slaves.

The OpenShift-Sync plugin will notice that a BuildConfig with the strategy jenkinsPipelineStrategy has been created and will convert it into a Jenkins pipeline, pulling from the Jenkinsfile specified by the git source. An inline Jenkinsfile can also be used instead of pulling from one from a git repository. See here for more information. To create a Jenkins slave, create an OpenShift ImageStream that starts with the following definition:.

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Notice the metadata defined in this ImageStream. The Jenkins slave will be named after the value from the slave-label annotation. ImageStreams work just fine for simple Jenkins slave configurations, but some teams will find it necessary to configure nitty-gritty details such as resource limits, readiness and liveness probes, and instance caps. This is where ConfigMaps come into play:.

Notice with the three examples shown here that none of these operations required an administrator to make manual changes into the Jenkins console. By using OpenShift resources, Jenkins can be configured in a way that is easily automated. The main idea here is to prevent teams from reinventing the wheel. The members of your team responsible for writing the pipeline may not be OpenShift experts, nor may they have the bandwidth to write this functionality from scratch.

To take this one step further, your organization may decide to maintain entire pipelines.

CI/CD in OpenShift with Gitlab and Terraform

You may find that teams are writing pipelines with similar functionality. It would be more efficient for those teams to use a parameterized pipeline from a common repository as opposed to writing their own from scratch. Imagine I have multiple regions I can deploy my application to. Without parameterization, I would need a separate pipeline for each region. The example given in the video provides a more substantial case where parameterization is a must.

Imagine that I have four images and three different environments to deploy to. Without parameterization, I would need 12 CD pipelines to allow for all deployment possibilities. This can get out of hand very quickly.

To make maintenance of the CD pipeline easier, organizations would find it better to parameterize the image and environment to allow one pipeline to perform the work of many.

Red Hat OpenShift

Luckily, with Jenkins there are many ways to seamlessly integrate with OpenShift to provide automation of your setup. Thanks for reading! To create a Jenkins slave, create an OpenShift ImageStream that starts with the following definition: apiVersion: v1 kind: ImageStream metadata: annotations: slave-label: jenkins-slave labels: role: jenkins-slave This is where ConfigMaps come into play: apiVersion: v1 kind: ConfigMap metadata: labels: role: jenkins-slave Like this: Like Loading Leave a Reply Cancel reply.The last years have seen the debut of many new software products specifically targeting both infrastructure services and IT automation.

openshift cicd

The consumerization of IT has caused its architects to take a fresh look at their existing, often times monolithic apps and IT infrastructure and asking: Can we do better? How do I keep IT relevant? How do I keep track of all these VMs and data?

openshift cicd

How do I scale out my IT environment without a huge budget increase or physical buildout? How do I develop and get bits to production faster and with higher quality? These organizations are looking to evolve their development and deployment processes to be more agile and accelerate time-to-market. They are trying to embrace things like DevOps and Continuous Deployment to do that. They are breaking monolithic apps out into microservices that can be independently updated, with a focus on speed and agility, so their apps can be more reactive to changes in their business.

They are evolving from traditional virtualization to public and private cloud deployments. There are strong parallels between the way open source communities produce great software and how IT orgs build and deliver great software and services. And the clear leader in this particular space is Jenkins. With your free Red Hat Developer program membership, unlock our library of cheat sheets and ebooks on next-generation application development.

Some of these plugins are actively maintained by Red Hat, and some maintained by others in the Jenkins community. They provide a clean integration between Jenkins and Red Hat products and projects that are typically used in the context of DevOps:.

Can be used as Build Step. It supports several different authentication schemes service accounts, OAuth tokens, and more. Plugins can provide components that can be used within the definition of pipelines, which is what this plugin does. It makes it easy to define new jobs either using Build steps or as a pipeline, using the DSL support provided by the plugin. Those same programs integrate with Jenkins in several different ways described below:.

Jenkins is a first-class citizen of the OpenShift ecosystem, and there are several aspects that make them a great combination:. Using these features, along with the previously mentioned features from plugins means that you can implement your own deployment pipeline automated with the Pipeline plugin for deploying to OpenShift, complete with source to image creation, advanced test phases, gated approvals, and deployments, using the best of OpenShift and Jenkins.

OpenShift 3. As we all know, before CD can be achieved, the first step is to achieve CI. CI systems are build systems that watch various source control repositories for changes, run any applicable tests, and automatically build and ideally test the latest version of the application from each source control change, such as Jenkins.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This repository includes the infrastructure and pipeline definition for continuous delivery using Jenkins, Nexus, SonarQube and Eclipse Che on OpenShift.

Download and install CodeReady Containers in order to create a local OpenShift 4 cluster on your workstation. Otherwise create an OpenShift 4 cluster on the public cloud or the infrastructure of your choice. If you want to use Quay. Then deploy the demo providing your quay. In that case, the pipeline would create an image repository called tasks-app default name but configurable on your Quay.

To use custom project names, change cicddev and stage in the above commands to your own names and use the following to create the demo:. This demo by default uses the WildFly community image. You can use the JBoss EAP enterprise images provide by Red Hat by simply editing the tasks build config in the Tasks - Dev project and changing the builder image from wildfly to jboss-eapopenshift If running into Permission denied issues on minishift or CDK, run the following to adjust minishift persistent volume permissions:.

A Jenkins pipeline is pre-configured which clones Tasks application source code from Gogs running on OpenShiftbuilds, deploys and promotes the result through the deployment pipeline. You can also explore the pipeline job in Jenkins by clicking on the Jenkins route url, logging in with the OpenShift credentials and clicking on tasks-pipeline and Configure. If you have enabled Quay, after image build completes go to quay.

Click on this step on the pipeline and then Promote. Clone and checkout the eap-7 branch of the openshift-tasks git repository and using an IDE e. Commit and push to the git repo. Check out Jenkins, a pipeline instance is created and is being executed. The pipeline will fail during unit tests due to the enabled unit test.

Commit and push the fix to the git repository and verify a pipeline instance is created in Jenkins and executes successfully. You can then follow these instructions to use Eclipse Che for editing code in the above demo flow.We use OpenShift which is a container based orchestration, so the first thing to do is to create a container for the application. The first thing is to create a Dockerfile :.

I did do some customization like changing the logo to our company onechanging the entrypoint and adding the oc openshift client command. As one can easily understand, our internal wiki is password protected. If the container dies or gets redeployed, the search engine will re-index our wiki.

This keeps this project simpler and cleaner. Here is a snippet of the insert.

openshift cicd

We use Terraform to bootstrap the infrastructure required for the deployment of this application, which is responsible for the following:. Unfortunately, the terraform kubernetes provider is somewhat lacking in features comparing to others like aws or azure provider. As a result of a terraform apply :. At Eurotux we are using an internal gitlab server to house all our projects.

The pipeline will create a review application when working on a git branch other than master so that I can review and fix things. When a merge or a commit for that matter occurs in masterit will deploy automatically to staging and then I can press play to deploy to production. Here is an example of the pipeline:. We are using the 3. OpenShift automatically provides some Grafana dashboards so that you can see what are the usage patterns:.

One of the interesting things that these dashboards present is the lifecycle of the application starting new containers and stopping the older ones. Skip to content Home About Contact. The Fess container runs several services actually this is an anti-pattern in the container worldand requires to run as root inside the container later on it changes the uid to another Unfortunately, the terraform kubernetes provider is somewhat lacking in features comparing to others like aws or azure provider.

As a result of a terraform apply : Gitlab At Eurotux we are using an internal gitlab server to house all our projects.

OpenShift CI/CD Demo: Part II

OpenShift automatically provides some Grafana dashboards so that you can see what are the usage patterns: One of the interesting things that these dashboards present is the lifecycle of the application starting new containers and stopping the older ones. Published by. Next Next post: Installing Kubernetes 1.


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