apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: ztunnel
  namespace: {{ .Release.Namespace }}
  labels:
    {{- .Values.labels | toYaml | nindent 4}}
  annotations:
    {{- .Values.annotations | toYaml | nindent 4 }}
spec:
  updateStrategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
  selector:
    matchLabels:
      app: ztunnel
  template:
    metadata:
      labels:

# each master and worker node in a Kubernetes cluster.
{{- $defaultBinDir :=
    (.Capabilities.KubeVersion.GitVersion | contains "-gke") | ternary
      "/home/kubernetes/bin"
      "/opt/cni/bin"
}}
kind: DaemonSet
apiVersion: apps/v1
metadata:
  name: istio-cni-node
  namespace: {{ .Release.Namespace }}
  labels:
    k8s-app: istio-cni-node
    release: {{ .Release.Name }}

  // can have their pods stopped for an update at any given time. The update
  // starts by stopping at most 30% of those DaemonSet pods and then brings
  // up new DaemonSet pods in their place. Once the new pods are available,
  // it then proceeds onto other DaemonSet pods, thus ensuring that at least
  // 70% of original number of DaemonSet pods are available at all times during
  // the update.
  // +optional

// Package-wide variables from generator "generated".
option go_package = "k8s.io/api/extensions/v1beta1";

// DEPRECATED - This group version of DaemonSet is deprecated by apps/v1beta2/DaemonSet. See the release notes for
// more information.
// DaemonSet represents the configuration of a daemon set.
message DaemonSet {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

      # Note this gives the DaemonSet a relatively high privilege, as modifying pod metadata/status can have wider impacts.
      labelPods: false
      # deletePods will delete any broken pod. These will then be rescheduled, hopefully onto a node that is fully ready.
      # Note this gives the DaemonSet a relatively high privilege, as it can delete any Pod.
      deletePods: false

  // Items is the list of ControllerRevisions
  repeated ControllerRevision items = 2;
}

// DEPRECATED - This group version of DaemonSet is deprecated by apps/v1/DaemonSet. See the release notes for
// more information.
// DaemonSet represents the configuration of a daemon set.
message DaemonSet {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

        * .spec.strategy.rollingUpdate.minReadySeconds is moved to .spec.minReadySeconds
  * DaemonSet was Alpha in 1.1 (though it had apiVersion extensions/v1beta1) and
was disabled by default. Due to some non-backward-compatible API changes, any
DaemonSet objects you created in 1.1 won’t work with in the 1.2 release.

Specifically:

- The CNI installation script is containerized and deployed as a daemonset in k8s.  The relevant calico k8s manifests were used as the model for the istio-cni plugin's manifest:
    - [daemonset and configmap](https://docs.projectcalico.org/v3.2/getting-started/kubernetes/installation/hosted/calico.yaml) - search for the `calico-node` Daemonset and its `install-cni` container deployment

- if deployed by manifest, add env `FELIX_WORKLOADSOURCESPOOFING` with value `Any` in `spec.template.spec.containers.env` for daemonset `calico-node`. (This will allow PODs with specified annotation to skip the rpf check. )

### GKE notes

On GKE, 'kube-system' is required.

          "type": [
            "object",
            "null"
          ]
        },
        "kind": {
          "type": "string",
          "enum": [
            "Deployment",
            "DaemonSet"
          ]
        },
        "annotations": {
          "additionalProperties": {
            "type": [
              "string",
              "integer"
            ]
          },