updates to support an alternate k8s scheduler (#14356)

Signed-off-by: Sathya Balakrishnan <sathya@portworx.com>

stable/elasticsearch/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 name: elasticsearch
 home: https://www.elastic.co/products/elasticsearch
-version: 1.27.3
+version: 1.28.0
 appVersion: 6.7.0
 description: Flexible and powerful open source, distributed real-time search and analytics
   engine.

stable/elasticsearch/README.md

@@ -68,6 +68,7 @@ The following table lists the configurable parameters of the elasticsearch chart
 | `initImage.repository`               | Init container image name                                           | `busybox`                                           |
 | `initImage.tag`                      | Init container image tag                                            | `latest`                                            |
 | `initImage.pullPolicy`               | Init container pull policy                                          | `Always`                                            |
+| `schedulerName`                      | Name of the k8s scheduler (other than default)                      | `nil`                                               |
 | `cluster.name`                       | Cluster name                                                        | `elasticsearch`                                     |
 | `cluster.xpackEnable`                | Writes the X-Pack configuration options to the configuration file   | `false`                                             |
 | `cluster.config`                     | Additional cluster config appended                                  | `{}`                                                |

stable/elasticsearch/templates/data-statefulset.yaml

@@ -23,6 +23,9 @@ spec:
 {{ toYaml .Values.data.podAnnotations | indent 8 }}
         {{- end }}
     spec:
+      {{- if .Values.schedulerName }}
+      schedulerName: "{{ .Values.schedulerName }}"
+      {{- end }}
       serviceAccountName: {{ template "elasticsearch.serviceAccountName.data" . }}
 {{- if .Values.data.priorityClassName }}
       priorityClassName: "{{ .Values.data.priorityClassName }}"

stable/elasticsearch/templates/master-statefulset.yaml

@@ -23,6 +23,9 @@ spec:
 {{ toYaml .Values.master.podAnnotations | indent 8 }}
         {{- end }}
     spec:
+      {{- if .Values.schedulerName }}
+      schedulerName: "{{ .Values.schedulerName }}"
+      {{- end }}
       serviceAccountName: {{ template "elasticsearch.serviceAccountName.master" . }}
 {{- if .Values.master.priorityClassName }}
       priorityClassName: "{{ .Values.master.priorityClassName }}"

stable/elasticsearch/values.yaml

@@ -35,6 +35,11 @@ securityContext:
   enabled: false
   runAsUser: 1000
 
+## Use an alternate scheduler, e.g. "stork".
+## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
+##
+# schedulerName: "default-scheduler"
+
 image:
   repository: "docker.elastic.co/elasticsearch/elasticsearch-oss"
   tag: "6.7.0"