$ operator-sdk init -domain= -repo=//custom-controller -skip-go-version-check If you face an error in go version when trying to initialise an operator skip the go version check in init operator command but still it is suited to work with updated versions of go and kubernetes. $ mkdir custom-controller & cd custom-controller $ operator-sdk init -domain= -repo=//custom-controller $ operator-sdk create api -group=core -version=v1 -kind=Pod -controller=true -resource=false Next step will be to create a directory, initialise operator which will handle the controller for pod resource and finally we create a controller with a kind set to pod. Once the installation is done, we can verify the version of operator-sdk to make sure that it is matching with updated version of kubernetes. Each controller tries to move the current cluster state closer to the desired state. In Kubernetes, controllers are control loops that watch the state of your cluster, then make or request changes where needed.

Open source tools like the Operator SDK provide ways to build reliable and maintainable operators, making it easier to extend Kubernetes and implement custom schedulingĬontrollers are control loops used to manage your kubernetes resources. Operators are proving to be an excellent solution to running stateful distributed applications in Kubernetes. Kubernetes operators provides the best way to manage your kubernetes resources and it is easy to implement.

Kubernetes is been part of cloud development for a long time and there are open source libraries build to integrate it with our project. To give an example you can create your own custom object using kubernetes schema. Kubernetes provide a way to build your own custom kubernetes resources called as Kubernetes Custom Resource in order to extend its functionality according to your requirements.

What is kubernetes controller