EdgeCDN-X Controller - Cache

The controller is the same one as this but running in a cache-controller role. In such case the controller is responsible for managing the objects related to Caching.

Responsibilities

In cache-controller mode the reconcile loop serves the following tasks:

• Manages origin servers
• Manages S3 Origins
• Manages ingress configuration

The main caching logic is happening here. Detailed use cases is visible in the User Guide section.

CRDs

There are 3 CRDs in the system:

• Location
• Service
• PrefixList

Locations define the infrastructure. Services define the services served across the plaftom, and PrefixLists can alter the routing in the ecosystem. For details click here

Deployment

Deploy the EdgeCDN-X Controller in cache-controller mode on clusters with label edgecdnx.com/caching set to true/yes. For this purpose you can use the following Applicationset on the control plane.

---
apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: edgecdnx-controller-caching
  namespace: argocd
spec:
  goTemplate: true
  syncPolicy:
    preserveResourcesOnDeletion: false
  generators:
    - clusters:
        values:
          chart: edgecdnx-controller
          chartVersion: 0.5.4
          chartRepository: https://edgecdn-x.github.io/helm-charts/
          namespace: edgecdnx-controller-system
        selector:
          matchExpressions:
            - key: edgecdnx.com/caching
              operator: In
              values:
                - "true"
                - "yes"
  template:
    metadata:
      name: edgecdnx-controller-caching-{{ index .metadata.labels "edgecdnx.com/location" }}
    spec:
      project: default
      sources:
        - chart: "{{ .values.chart }}"
          repoURL: "{{ .values.chartRepository }}"
          targetRevision: "{{ .values.chartVersion }}"
          helm:
            releaseName: edgecdnx-controller-caching
            ignoreMissingValueFiles: true
            valuesObject:
              role: cache-controller
      destination:
        namespace: "{{ .values.namespace }}"
        server: "{{ .server }}"
      syncPolicy:
        automated:
          selfHeal: true
        syncOptions:
          - CreateNamespace=true
          - ServerSideApply=true # Big controller.
      ignoreDifferences: []

CRDs are deployed alongside this helm deployment. In the values you have to specify the role.