CRD

Custom Resource.

STEP-1 : custom resource definition (CRD)

• 
• 
• k create -f flightticket.yaml
• k get flighttickets. it will go into pending state.
• k create -f flightticket.yaml
• now its in etcd.
• note: scope - Namespaced or clustered.

STEP-2 : Custom controller (CC)

• next, look into etcd and take action.
• clone : https://github.com/kubernetes/sample-controller.git (language : go)
• run it as pod inside cluster.
• 

---

operator framework (INTRO)

• CRD and CC can be deployed together as single entity using this.
• perform addition things too. check operatorhub.io
• install it and us it.
• Note: out of scope in CKAD exam.