sample-preflight.yaml

apiVersion: troubleshoot.replicated.com/v1beta1
kind: Preflight
metadata:
  name: example-preflight-check
spec:
  analyzers:
    - clusterVersion:
        outcomes:
          - fail:
              when: "< 1.13.0"
              message: This application requires at Kubernetes 1.13.0 or later, and recommends 1.15.0.
              uri: https://www.kubernetes.io
          - warn:
              when: "< 1.15.0"
              message: Your cluster meets the minimum version of Kubernetes, but we recommend you update to 1.15.0 or later.
              uri: https://kubernetes.io
          - pass:
              when: ">= 1.15.0"
              message: Your cluster meets the recommended and required versions of Kubernetes.
    - customResourceDefinition:
        customResourceDefinitionName: ingressroutes.contour.heptio.com
        outcomes:
          - fail:
              message: IngressRoutes CRD not found!
          - pass:
              message: IngressRoutes CRD found!
    - containerRuntime:
        outcomes:
          - pass:
              when: "== docker"
              message: Docker container runtime was found.
          - fail:
              message: Did not find Docker container runtime.
    - storageClass:
        checkName: Required storage classes
        storageClassName: "default"
        outcomes:
          - fail:
              message: Could not find a storage class called default.
          - pass:
              message: All good on storage classes
    - distribution:
        outcomes:
          - fail:
              when: "== docker-desktop"
              message: The application does not support Docker Desktop Clusters
          - fail:
              when: "== microk8s"
              message: The application does not support Microk8s Clusters
          - fail:
              when: "== minikube"
              message: The application does not support Minikube Clusters
          - pass:
              when: "== eks"
              message: EKS is a supported distribution
          - pass:
              when: "== gke"
              message: GKE is a supported distribution
          - pass:
              when: "== aks"
              message: AKS is a supported distribution
          # Will be supported in the future
          - pass:
              when: "== kurl"
              message: KURL is a supported distribution
          - pass:
              when: "== digitalocean"
              message: DigitalOcean is a supported distribution
          - warn:
              message: Unable to determine the distribution of Kubernetes
    - nodeResources:
        checkName: Must have at least 3 nodes in the cluster, with 5 recommended
        outcomes:
        - fail:
            when: "count() < 3"
            message: This application requires at least 3 nodes.
            uri: https://kurl.sh/docs/install-with-kurl/adding-nodes
        - warn:
            when: "count() < 5"
            message: This application recommends at last 5 nodes.
            uri: https://kurl.sh/docs/install-with-kurl/adding-nodes
        - pass:
            message: This cluster has enough nodes.
    - nodeResources:
        checkName: Every node in the cluster must have at least 10 GB of memory, with 32 GB recommended
        outcomes:
        - fail:
            when: "min(memoryCapacity) < 10Gi"
            message: All nodes must have at least 10 GB of memory.
            uri: https://kurl.sh/docs/install-with-kurl/system-requirements
        - warn:
            when: "min(memoryCapacity) < 32Gi"
            message: All nodes are recommended to have at least 32 GB of memory.
            uri: https://kurl.sh/docs/install-with-kurl/system-requirements
        - pass:
            message: All nodes have at least 32 GB of memory.
    - nodeResources:
        checkName: Total CPU Cores in the cluster is 4 or greater
        outcomes:
          - fail:
              when: "sum(cpuCapacity) < 4"
              message: The cluster must contain at least 4 cores
              uri: https://kurl.sh/docs/install-with-kurl/system-requirements
          - pass:
              message: There are at least 4 cores in the cluster
    - nodeResources:
        checkName: Every node in the cluster must have at least 40 GB of ephemeral storage, with 100 GB recommended
        outcomes:
        - fail:
            when: "min(ephemeralStorageCapacity) < 40Gi"
            message: All nodes must have at least 40 GB of ephemeral storage.
            uri: https://kurl.sh/docs/install-with-kurl/system-requirements
        - warn:
            when: "min(ephemeralStorageCapacity) < 100Gi"
            message: All nodes are recommended to have at least 100 GB of ephemeral storage.
            uri: https://kurl.sh/docs/install-with-kurl/system-requirements
        - pass:
            message: All nodes have at least 100 GB of ephemeral storage.