operator-sdk
kubectl-operator
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operator-sdk | kubectl-operator | |
---|---|---|
23 | 9 | |
7,005 | 109 | |
1.0% | 3.7% | |
8.0 | 6.5 | |
1 day ago | 8 days ago | |
Go | Go | |
Apache License 2.0 | Apache License 2.0 |
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Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
operator-sdk
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Building a Kubernetes Operator with the Operator Framework
operator-sdk: brew install operator-sdk
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Annotations in Kubernetes Operator Design
The operator that I've been working on is designed to manage the full lifecycle of a QuestDB database instance, including version and hardware upgrades, config changes, backups, and (eventually) recovery from node failure. I used the Operator SDK and kubebuilder frameworks to provide scaffolding and API support.
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Hacking in kind (Kubernetes in Docker)
I've recently been working on an operator (built using the operator-sdk) that manages cluster node lifecycles. Kind allows you to spin up clusters with multiple nodes, using a Docker container per-node and joining them using a common Docker network. However, the kind executable does not allow you to modify an existing cluster by adding or removing a node.
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Creating Kubernetes Operators with operator-sdk
To illustrate what we can do with an operator, I will create a proof of concept using operator-sdk. According to the official website::
- What Is A Kubernetes Operator?
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Writing a Kubernetes Operator
Besides the frameworks TFA lists, you can also build Operators in Ansible or Helm.
https://sdk.operatorframework.io/
- Question: Resources to learn K8s operator programming
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Using k8s-apiserver as AAA server for microservices?
Operator SDK is basically just a thin wrapper for kube-builder
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What topics should I cover as DevOps in Golang after practice and learning syntax
You mean the Operator SDK? https://sdk.operatorframework.io
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Dont understand how I can watch external resources modification/deletion with my custom operator
yes I agree with youu, an issue has been opened on the operator-sdk github page regarding this topic https://github.com/operator-framework/operator-sdk/issues/6117
kubectl-operator
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Building a Kubernetes Operator with the Operator Framework
Kubernetes Operators simplify the management of complex applications on Kubernetes. In this guide, we'll walk through creating a simple Kubernetes Operator using the Operator Framework. We'll also cover setting up a local Kubernetes cluster with KIND (Kubernetes in Docker) and deploying the Operator to the KIND cluster.
- Open source toolkit to manage Kubernetes native applications
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What do you think about Terraform for Kubernetes ecosystem
There's a kubectl extension for it too. https://github.com/operator-framework/kubectl-operator
- Kubernetes Operator
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Writing a Kubernetes Operator
Since Go got generics, working with the Kubernetes API could become far more ergonomic. It's been pulling teeth until now. I'm eager to see how the upstream APIs change over time.
In the mean time, one of the creators of the Operator Framework[0] built a bunch of useful patterns using generics that we used to build the SpiceDB Operator[1] called controller-idioms[2].
Does anyone know of other efforts to improve the status quo?
[0]: https://operatorframework.io
[1]: https://github.com/authzed/spicedb-operator
[2]: https://github.com/authzed/controller-idioms
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is there a way to set expiry date for k8s rbac setting?
There are many frameworks, like the Operator Framework (https://operatorframework.io/) to the MetaController (https://github.com/metacontroller/metacontroller) to KubeBuilder(https://github.com/kubernetes-sigs/kubebuilder) to the Kubernetes Operator Framework (kopf, https://kopf.readthedocs.io/en/stable/), among others.
- What is a good resource to learn how to create and use custom Kubernetes operator?
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How OLM helps to install and upgrade operators
Operator lifecycle manager (OLM) is a Kubernetes feature & is part of Operator framework which provides tools that helps in the development and management of operators. OpenShift 4.x is build using different operators that manages cluster components like api-server, etcd, authentication, OAuth, ingress, etc. OpenShift makes use of OLM to install these operators as part of cluster build & OLM comes by default with OpenShift. OLM is an operator itself and understanding how it manages the operator lifecycle using different CRD’s & its flow is important, which I have explained in my article.
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Operators are so much easier to click-install -- how do I get them back out as manifests?
The documentation gives you all available options, but many of them are optional. If you know the package name of the operator (which you can get either via oc get packagemanifests or kubectl operator list-available from the kubectl plugin all you really need is:
What are some alternatives?
kubebuilder - Kubebuilder - SDK for building Kubernetes APIs using CRDs
controller-idioms - Generic libraries for building idiomatic Kubernetes controllers
terraform-provider-kubernetes-alpha - A Terraform provider for Kubernetes that uses dynamic resource types and server-side apply. Supports all Kubernetes resources.
metacontroller - Writing kubernetes controllers can be simple
sample-controller-kubebuilder - This is Sample Controller(Foo Controller) developed by Kubebuilder
gitops-catalog - Tools and technologies that are hosted on an OpenShift cluster
postgres-operator - Postgres operator creates and manages PostgreSQL clusters running in Kubernetes
spicedb-operator - Kubernetes controller for managing instances of SpiceDB
controller-runtime - Repo for the controller-runtime subproject of kubebuilder (sig-apimachinery)
databricks-kube-operator - A Kubernetes operator to enable GitOps style deploys for Databricks resources
sandbox-operator - A Kubernetes operator for creating isolated environments
argocd-operator - A Kubernetes operator for managing Argo CD clusters.