{{/*
Copyright 2017 The Openstack-Helm Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}

{{- $envAll := . }}
---
# This manifest installs the Calico etcd on the kubeadm master.  This uses a DaemonSet
# to force it to run on the master even when the master isn't schedulable, and uses
# nodeSelector to ensure it only runs on the master.
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: calico-etcd
  labels:
    k8s-app: calico-etcd
{{ tuple $envAll "calico" "etcd" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
spec:
  template:
    metadata:
      labels:
        k8s-app: calico-etcd
{{ tuple $envAll "calico" "etcd" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
      annotations:
        # Mark this pod as a critical add-on; when enabled, the critical add-on scheduler
        # reserves resources for critical add-on pods so that they can be rescheduled after
        # a failure.  This annotation works in tandem with the toleration below.
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      # Only run this pod on the master.
      tolerations:
      - key: node-role.kubernetes.io/master
        effect: NoSchedule
      # Allow this pod to be rescheduled while the node is in "critical add-ons only" mode.
      # This, along with the annotation above marks this pod as a critical add-on.
      - key: CriticalAddonsOnly
        operator: Exists
      nodeSelector:
        node-role.kubernetes.io/master: ""
      hostNetwork: true
      containers:
        - name: calico-etcd
{{ tuple $envAll "calico_etcd" | include "helm-toolkit.snippets.image" | indent 10 }}
          env:
            - name: CALICO_ETCD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
          command: ["/bin/sh","-c"]
          args: ["/usr/local/bin/etcd --name=calico --data-dir=/var/etcd/calico-data --advertise-client-urls=http://$CALICO_ETCD_IP:6666 --listen-client-urls=http://0.0.0.0:6666 --listen-peer-urls=http://0.0.0.0:6667"]
          volumeMounts:
            - name: var-etcd
              mountPath: /var/etcd
      volumes:
        - name: var-etcd
          hostPath:
            path: /var/etcd