kdl-server-operators.md

KDL Server API operators architecture

1. KDL Server API

• Reads configuration from ConfigMaps
• Creates KDLProject and UserTools CRD manifests based on:
  • kdlusertools.go structure
  • kdlproject.go structure

2. KDL operators

Operator SDK to create Kubernetes operators that manage custom resources through Helm releases. Exist two types:

• Project Operator
• User Tools Operator

These operators:

• Monitor and read CRD resources:
  • KDLProject
  • UserTools
• Deploy Helm releases that create:
  • configMaps
  • ingress
  • mlflow
  • ... and other resources

3. Helm Charts operator

• Contains the base Helm chart configuration, all resources are defined on kdl-server repository on:
  • project-operator
  • user-tools-operator

Workflow description

1. Configuration Loading

   • KDL API reads configuration from configMaps

2. Resource creation

   • KDL API creates Project/UserTools custom resources with values from configMaps
   • These are defined as CRDs in the Kubernetes cluster

3. Operator processing

   • Project/UserTools Operators detect new CRD instances
   • Operators read the CRD object

4. Resource deployment

   • Operators deploy Helm releases based on the CRD object