csi: ability to set priorityClassName for csi daemonset pods (#670)

CHANGELOG.md

@@ -4,6 +4,7 @@ Features:
 * Added configurable podDisruptionBudget for injector [GH-653](https://github.com/hashicorp/vault-helm/pull/653)
 * Make terminationGracePeriodSeconds configurable for server [GH-659](https://github.com/hashicorp/vault-helm/pull/659)
 * Added configurable update strategy for injector [GH-661](https://github.com/hashicorp/vault-helm/pull/661)
+* csi: ability to set priorityClassName for CSI daemonset pods [GH-670](https://github.com/hashicorp/vault-helm/pull/670)
 
 ## 0.18.0 (November 17th, 2021)
 

templates/csi-daemonset.yaml

@@ -27,6 +27,9 @@ spec:
         app.kubernetes.io/instance: {{ .Release.Name }}
       {{ template "csi.pod.annotations" . }}
     spec:
+      {{- if .Values.csi.priorityClassName }}
+      priorityClassName: {{ .Values.csi.priorityClassName }}
+      {{- end }}
       serviceAccountName: {{ template "vault.fullname" . }}-csi-provider
       {{- template "csi.pod.tolerations" . }}
       containers:

test/unit/csi-daemonset.bats

@@ -30,6 +30,29 @@ load _helpers
   [ "${actual}" = "false" ]
 }
 
+# priorityClassName
+
+@test "csi/daemonset: priorityClassName not set by default" {
+  cd `chart_dir`
+  local actual=$(helm template \
+      --show-only templates/csi-daemonset.yaml  \
+      --set "csi.enabled=true" \
+      . | tee /dev/stderr |
+      yq '.spec.template.spec | .priorityClassName? == null' | tee /dev/stderr)
+  [ "${actual}" = "true" ]
+}
+
+@test "csi/daemonset: priorityClassName can be set" {
+  cd `chart_dir`
+  local actual=$(helm template \
+      --show-only templates/csi-daemonset.yaml  \
+      --set 'csi.priorityClassName=armaggeddon' \
+      --set "csi.enabled=true" \
+      . | tee /dev/stderr |
+      yq '.spec.template.spec | .priorityClassName == "armaggeddon"' | tee /dev/stderr)
+  [ "${actual}" = "true" ]
+}
+
 # serviceAccountName reference name
 @test "csi/daemonset: serviceAccountName reference name" {
   cd `chart_dir`

values.schema.json

@@ -33,6 +33,9 @@
                         }
                     }
                 },
+                "priorityClassName": {
+                    "type": "string"
+                },
                 "debug": {
                     "type": "boolean"
                 },

values.yaml

@@ -812,6 +812,9 @@ csi:
     # in a PodSpec.
     tolerations: []
 
+  # Priority class for csi pods
+  priorityClassName: ""
+
   serviceAccount:
     # Extra annotations for the serviceAccount definition. This can either be
     # YAML or a YAML-formatted multi-line templated string map of the