The automation of processes and applications has become an imperative for organizations. For developers and IT administrators, the ability to rapidly and more securely automate the life-cycle management of applications and supporting infrastructure software means that the burden of managing once manual tasks, such as deployment, upgrades, and backups, is alleviated.
With Kubernetes Operators, you can automate Day 1 and Day 2 operations across any environment–public cloud, private cloud, or on-premise–with Red Hat® OpenShift®. To improve the application automation experience for Red Hat OpenShift users, all Red Hat Marketplace offerings have a Kubernetes Operator.
Kubernetes Operators defined
In Kubernetes, the use of controllers is a core concept. Kubernetes Operators are essentially custom controllers.
A domain- or application-specific controller, a Kubernetes Operator extends the Kubernetes application programming interface (API) to manage the packaging, deployment, and life cycle of the applications and infrastructure software that it manages. A Kubernetes Operator can provide agility, reliability, and simplicity for automating Day 1 and Day 2 operations across hybrid cloud environments.
One of the biggest benefits of Kubernetes Operators is that they simplify the automation of complex tasks and the process for users. Users do not need to be experts in either containerized applications or infrastructure software to run Kubernetes Operators because Kubernetes Operators use custom resource definitions (CRD) to automate tasks and simplify the user experience.
How do Kubernetes Operators work?
Kubernetes controllers implement control loops that continuously compare the cluster’s current state to the ideal state. If it detects that there is a discrepancy between the actual state and the ideal state, it takes action and solves the issue.
Kubernetes Operators extend this capability to specific applications and their components that run in a pod on the Kubernetes cluster using custom resources (CR). Essentially, the software runs on behalf of the Kubernetes user and manages what the user mandates. In cases where the cluster’s actual state does not match the desired state, the Kubernetes Operator steps in and begins running a loop to ensure the issue is resolved. Additionally, Kubernetes Operators can include the business logic required to perform the necessary tasks to update software.
High-level directives, such as keeping infrastructure or automation application software versions updated, are inputted into the CR, which the Kubernetes Operator converts to low-level actions, based on what its logic deems is the best practice.
As the Kubernetes application runs, the Kubernetes Operator monitors continuously and automatically. It can back up data, recover from failures, and upgrade the application over time. Other actions could include scaling a complex application, or managing kernel modules for nodes in a cluster with specialized hardware.
Red Hat OpenShift and Kubernetes Operators
Kubernetes Operators have been a part of the life-cycle management and deployment process of running workloads on Red Hat OpenShift since version 4. Together, they automate key Day 1 and Day 2 operations for infrastructure software and containerized applications.
When Kubernetes Operators are combined with Red Hat OpenShift tooling and management practices, developers are granted a convenient overview of entire ecosystems from a central dashboard.
Features and benefits
|Installation||Automate application and infrastructure software provisioning and configuration management.|
|Upgrade||Seamlessly move from one version to the next when a new release is available.|
|Backup and recovery||Automatically back up and recover from failures.|
|Workload and log analysis||Analyze logs generated by the components of the application or software and act accordingly.|
|Custom application-defined scaling||Intelligently scale an application up or down as needed, based on any desired condition.|
|Auto tuning||Calibrate the components, such as connecting a database to the application, to help it perform better.|
Get started with Kubernetes Operators on Red Hat Marketplace
Visit Red Hat Marketplace to access, try, purchase, deploy, and manage Kubernetes Operators on any Red Hat OpenShift cluster. An open cloud virtual market, Red Hat Marketplace offers a wide range of container-based software from categories including databases, artificial intelligence, application development, and many others.
If you want to curate certified Kubernetes Operators to help speed up innovation and manage costs, Red Hat Marketplace Select is a premium, paid edition of Red Hat Marketplace. This option provides greater control and governance over what teams can select to help streamline software management and deployment across clouds.
Red Hat validates Kubernetes Operators through the Red Hat OpenShift certification process. This certification ensures that Kubernetes Operators are interoperable, prioritize security, and are supported by Red Hat. Additionally, this certification ensures that automation for tasks like updates and bug-fixes works effectively with Red Hat OpenShift.
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