[stable/lvm]: add custom priorityclass for lvm deployments (#125)

Signed-off-by: prateekpandey14 <[email protected]>

Author: prateekpandey14

deploy/helm/charts/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: lvm-localpv
 description: CSI Driver for dynamic provisioning of LVM Persistent Local Volumes.
-version: 0.7.1
+version: 0.7.2
 appVersion: 0.7.0
 icon: https://raw.githubusercontent.com/cncf/artwork/master/projects/openebs/icon/color/openebs-icon-color.png
 home: http://www.openebs.io/

deploy/helm/charts/templates/_helpers.tpl

@@ -114,3 +114,25 @@ Create labels for openebs lvm-localpv node daemon
 {{ include "lvmlocalpv.lvmNode.matchLabels" . }}
 {{ include "lvmlocalpv.lvmNode.componentLabels" . }}
 {{- end -}}
+
+{{/*
+Create the name of the priority class for csi node plugin
+*/}}
+{{- define "lvmlocalpv.lvmNode.priorityClassName" -}}
+{{- if .Values.lvmNode.priorityClass.create }}
+{{- printf "%s-%s" .Release.Name .Values.lvmNode.priorityClass.name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s" .Values.lvmNode.priorityClass.name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create the name of the priority class for csi controller plugin
+*/}}
+{{- define "lvmlocalpv.lvmController.priorityClassName" -}}
+{{- if .Values.lvmController.priorityClass.create }}
+{{- printf "%s-%s" .Release.Name .Values.lvmController.priorityClass.name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s" .Values.lvmController.priorityClass.name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}

deploy/helm/charts/templates/lvm-node-service.yaml

@@ -15,4 +15,4 @@ spec:
     {{- with .Values.lvmNode.podLabels }}
     {{ toYaml . }}
     {{- end }}
-{{- end }}
+{{- end }}

deploy/helm/charts/templates/priority-class.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.lvmController.priorityClass.create }}
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+  name: {{ template "lvmlocalpv.lvmController.priorityClassName" . }}
+value: 900000000
+globalDefault: false
+description: "This priority class should be used for the CStor CSI driver controller deployment only."
+{{- end }}
+---
+{{- if .Values.lvmNode.priorityClass.create }}
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+  name: {{ template "lvmlocalpv.lvmNode.priorityClassName" . }}
+value: 900001000
+globalDefault: false
+description: "This priority class should be used for the CStor CSI driver node deployment only."
+{{- end }}

deploy/helm/charts/values.yaml

@@ -50,6 +50,10 @@ lvmNode:
   tolerations: []
   securityContext: {}
   labels: {}
+  priorityClass:
+    create: true
+    name: lvm-localpv-csi-node-critical
+
 
 # lvmController contains the configurables for
 # the lvm controller statefulset
@@ -114,6 +118,9 @@ lvmController:
   nodeSelector: {}
   tolerations: []
   securityContext: {}
+  priorityClass:
+    create: true
+    name: lvm-localpv-csi-controller-critical
 
 # lvmPlugin is the common csi container used by the
 # controller statefulset and node daemonset