Openshift Gitops: A Comprehensive Guide

Openshift Gitops is a game-changer for developers and operators alike, allowing for automated deployment and management of applications through Git repositories.

It's based on the GitOps framework, which uses Git as the single source of truth for infrastructure and application configuration.

This approach enables teams to version control their entire application lifecycle, from code to infrastructure, in a single place.

By doing so, it simplifies the deployment process and reduces the risk of errors or inconsistencies.

A different take: Openshift Deployment

Red Hat OpenShift GitOps is a significant tool in the DevOps world, earning the DevOps Dozen award for best DevOps Repo/GitOps tool/Service. It's a testament to its effectiveness and efficiency.

Red Hat OpenShift GitOps is a tool that helps streamline the process of managing and deploying applications, making it a crucial part of any DevOps strategy.

A fresh viewpoint: Azure Red Hat Openshift

Red Hat OpenShift GitOps is the DevOps Dozen award winner for best DevOps Repo/GitOps tool/Service.

This recognition is a testament to the tool's effectiveness in streamlining DevOps processes.

Openshift Gitops is a set of practices and tools that help you manage and deploy applications in a scalable and efficient way.

It's built on top of OpenShift, a popular container orchestration platform, and Git, a version control system.

The core idea is to treat infrastructure as code, using Git to manage and track changes to your application's infrastructure.

This approach allows for version control, collaboration, and automation of infrastructure deployments.

By using Gitops, you can automate the deployment of your applications, reducing the risk of human error and increasing the speed of delivery.

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To get started with OpenShift GitOps, check out the on-demand learning path that lets you get hands on with OpenShift and its GitOps functionality.

You can find a collection of useful recipes and examples in the GitOps Cookbook, which provides a wealth of information to follow GitOps practices on Kubernetes.

View our collection of the latest articles on OpenShift GitOps advancements, best practices, and more to stay up to date with the latest developments.

To streamline the deployment process, consider using OpenShift DeploymentConfig for Stakater Reloader. This helps ensure effective monitoring of the Operator's health by configuring health checks in ArgoCD.

Health checks can be defined based on custom metrics, pod health, or other relevant criteria, and updated in the ArgoCD Application manifest. This ensures a reliable and efficient operational environment.

Effective configuration and management of OpenShift clusters is crucial for maintaining stability and performance in applications. This can be achieved by integrating ArgoCD into the process, automating the deployment, monitoring, and maintenance of Operators.

Here are the key features of Red Hat OpenShift GitOps that help with configuration and management:

Configuring Operator Group is a crucial step in ensuring your operator has the necessary permissions to manage resources.

An OperatorGroup specifies the namespaces where the operator will manage resources.

If you're installing the operator in a namespace other than openshift-operators, you need to create the OperatorGroup in that namespace.

This ensures that the operator has the required permissions to operate within those namespaces.

To configure health checks with ArgoCD, you'll want to ensure effective monitoring of the Operator's health. This involves defining health checks based on custom metrics, pod health, or other relevant criteria.

ArgoCD allows you to update the Application manifest to include these health check configurations. By doing so, you can streamline the deployment process and make it more efficient.

You can use OpenShift DeploymentConfig for Stakater Reloader to further streamline the deployment process, especially when dealing with configuration changes. This can be a game-changer for maintaining stability and performance in applications on OpenShift clusters.

Health checks with ArgoCD can be configured in the following ways:

By integrating ArgoCD into your process, you can automate the deployment, monitoring, and maintenance of Operators, ensuring a reliable and efficient operational environment. This is especially important for managing the lifecycle of OpenShift Operators, which is crucial for maintaining stability and performance in applications on OpenShift clusters.

For another approach, see: Openshift Operator

Kustomization.yaml is a crucial file in the ArgoCD and kustomize setup. It's used to define the environments that are ready for use in the git repository.

To use kustomize environments, you need to have a git repository defined in the ArgoCD Repositories settings. This repository should have kustomize environments ready for use.

The kustomize environment choices are automatically detected by ArgoCD when you click in the Path entry. If not, you need to enter the path to the directory within the git repository to use.

The kustomize environment you select will be used to deploy resources to the specified namespace in the Kubernetes cluster. The namespace setting should be the OpenShift namespace that ArgoCD will deploy resources to.

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When organizing your code repository, consider a simple layout with two directories at the root: base and overlays.

The base directory contains resources that deploy the application, such as YAML files generated from existing OpenShift project resources or new YAML files for resources that haven't been deployed prior.

These resources can also come from existing git repositories, like GitHub or GitLab, or be generated by the helm template command. Make sure to pin the version at a specific tag or hash if using a remote repository to prevent unexpected changes.

The overlays directory contains patches for distinct deployments, often referred to as environments, like production and staging. Each environment has its own patch file, such as deployment.yaml for production and map.yaml for staging.

In the world of configuration and management, having the right tools can make all the difference. Red Hat OpenShift GitOps helps you automate several key tasks.

One of the most significant advantages of Red Hat OpenShift GitOps is its ability to ensure that clusters have similar states for configuration, monitoring, and storage. This helps maintain consistency across different environments.

Red Hat OpenShift GitOps also makes it easy to apply or revert configuration changes to multiple OpenShift Container Platform clusters. This is especially useful when you need to roll back changes or test new configurations.

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Associating templated configuration with different environments is another key feature of Red Hat OpenShift GitOps. This allows you to create reusable templates that can be applied to various environments.

Promoting applications across clusters, from staging to production, is a crucial step in the development process. Red Hat OpenShift GitOps streamlines this process by allowing you to easily promote applications across clusters.

Here are the key features of Red Hat OpenShift GitOps at a glance: