k8s-operator-talk
operator-sdk
| k8s-operator-talk | operator-sdk | |
|---|---|---|
| 2 | 23 | |
| 3 | 7,025 | |
| - | 0.8% | |
| 6.5 | 8.0 | |
| 3 months ago | 6 days ago | |
| Go | Go | |
| - | Apache License 2.0 |
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k8s-operator-talk
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Writing tests for a Kubernetes Operator
You can find the code in this post on GitHub.
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Creating Kubernetes Operators with operator-sdk
The first command generates all the files necessary to create the CRD. The second generates a docker container and pushes it to the indicated repository. The last command installs the generated container on the cluster. Tip: You can automate controller generation and installation in your development environment using Tilt. This project's repository has a Tiltfile that does all this work. To learn more about Tilt, check out my post about the tool.
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
What are some alternatives?
kubernetes - Production-Grade Container Scheduling and Management
kubebuilder - Kubebuilder - SDK for building Kubernetes APIs using CRDs
hub-feedback - Feedback and bug reports for the Docker Hub
terraform-provider-kubernetes-alpha - A Terraform provider for Kubernetes that uses dynamic resource types and server-side apply. Supports all Kubernetes resources.
ginkgo - A Modern Testing Framework for Go
sample-controller-kubebuilder - This is Sample Controller(Foo Controller) developed by Kubebuilder
gomega - Ginkgo's Preferred Matcher Library
postgres-operator - Postgres operator creates and manages PostgreSQL clusters running in Kubernetes
controller-runtime - Repo for the controller-runtime subproject of kubebuilder (sig-apimachinery)
sandbox-operator - A Kubernetes operator for creating isolated environments
postgres-operator - Production PostgreSQL for Kubernetes, from high availability Postgres clusters to full-scale database-as-a-service.
go-tfe - HCP Terraform/Enterprise API Client/SDK in Golang