ajixuan/sde-control

Learning the kubernetes operator

Learning the kubernetes operator

Prerequisites

go version 1.19+

Docs:

Tutorial: https://book.kubebuilder.io/cronjob-tutorial/gvks.html

Resources:

https://opensource.com/article/22/9/packaging-job-scripts-kubernetes-operators https://betterprogramming.pub/build-a-kubernetes-operator-in-10-minutes-11eec1492d30 https://cloudark.medium.com/kubernetes-operators-and-helm-it-takes-two-to-tango-3ff6dcf65619#:~:text=Helm%20and%20Operators%20are%20complementary,managing%20application%20workloads%20on%20Kubernetes.

Arguments for Operator:

https://developer.ibm.com/learningpaths/why-when-kubernetes-operators/summary/

Example of Cloud Native PG:

https://github.com/cloudnative-pg/cloudnative-pg/blob/main/docs/src/bootstrap.md

Operations

Steps to Initialize a Kubebuilder project (incomplete):

kubebuilder init --domain sde.domain --repo sde.domain/sdeController
kubebuilder create api --group sde-controller --version v1beta1 --kind SdeController

Steps to deploy demo:

1. Make sure your Kubeconfig is set to the right context and cluster
2. Change the namespace attribute of ./config/default/kustomization.yaml file to match your namespace
3. Build and install the controller Custom Resource to your cluster:

make build
make install

1. Build and Deploy the controller container:

export IMG=docker-dev.sdelements.com/dev_sde/sde-controller:0.0.1
make docker-build
make docker-push
make docker-deploy

1. Deploy an instance of the SDE Custom resource:

kubectl apply -f config/samples/ --namespace <your namespace>