feat(network-nodes): allow priority classes

Author: roderik

charts/network/charts/network-nodes/README.md

@@ -139,6 +139,8 @@ A Helm chart for Kubernetes
 | podDisruptionBudgets.validator.unhealthyPodEvictionPolicy | string | `""` | Optional unhealthy pod eviction policy (Default or AlwaysAllow). |
 | podLabels | object | `{}` |  |
 | podSecurityContext | object | `{}` |  |
+| priorityClassNames.rpc | string | `""` | PriorityClass name assigned to RPC pods. Leave empty to inherit namespace defaults. |
+| priorityClassNames.validator | string | `""` | PriorityClass name assigned to validator pods. Leave empty to inherit namespace defaults. |
 | readinessProbe | string | `nil` |  |
 | resources | object | `{}` |  |
 | rpcReplicaCount | int | `2` | Number of RPC node replicas provisioned via StatefulSet. |

charts/network/charts/network-nodes/templates/statefulset-rpc.yaml

@@ -31,6 +31,8 @@ spec:
   {{- $privateKeyFilename := default "privateKey" .Values.config.privateKeyFilename }}
   {{- $shouldMountPersistence := $persistenceEnabled }}
   {{- $rpcReplicaBudget := .Values.rpcReplicaCount | int }}
+  {{- $priorityClasses := .Values.priorityClassNames | default (dict) }}
+  {{- $rpcPriorityClass := default "" (get $priorityClasses "rpc") }}
   {{- $initContainers := .Values.initContainers | default (dict) }}
   {{- $sharedInitContainers := get $initContainers "shared" }}
   {{- $rpcInitContainers := get $initContainers "rpc" }}
@@ -68,6 +70,9 @@ spec:
         {{- toYaml . | nindent 8 }}
       {{- end }}
       serviceAccountName: {{ include "nodes.serviceAccountName" . }}
+      {{- if $rpcPriorityClass }}
+      priorityClassName: {{ $rpcPriorityClass | quote }}
+      {{- end }}
       {{- with .Values.podSecurityContext }}
       securityContext:
         {{- toYaml . | nindent 8 }}

charts/network/charts/network-nodes/templates/statefulset-validator.yaml

@@ -32,6 +32,8 @@ spec:
   {{- $staticNodesConfigMapName := default "besu-static-nodes" (get $globalNodes "staticNodesConfigMapName") }}
   {{- $validatorPodPrefix := default "besu-node-validator" (get $globalNodes "podPrefix") }}
   {{- $validatorReplicaBudget := (include "nodes.validatorReplicaCount" . | int) }}
+  {{- $priorityClasses := .Values.priorityClassNames | default (dict) }}
+  {{- $validatorPriorityClass := default "" (get $priorityClasses "validator") }}
   {{- $initContainers := .Values.initContainers | default (dict) }}
   {{- $sharedInitContainers := get $initContainers "shared" }}
   {{- $validatorInitContainers := get $initContainers "validator" }}
@@ -69,6 +71,9 @@ spec:
         {{- toYaml . | nindent 8 }}
       {{- end }}
       serviceAccountName: {{ include "nodes.serviceAccountName" . }}
+      {{- if $validatorPriorityClass }}
+      priorityClassName: {{ $validatorPriorityClass | quote }}
+      {{- end }}
       {{- with .Values.podSecurityContext }}
       securityContext:
         {{- toYaml . | nindent 8 }}

charts/network/charts/network-nodes/values.yaml

@@ -153,6 +153,13 @@ networkPolicy:
         - protocol: TCP
           port: 30303
 
+# PriorityClass configuration applied to Besu workloads.
+priorityClassNames:
+  # -- PriorityClass name assigned to validator pods. Leave empty to inherit namespace defaults.
+  validator: ""
+  # -- PriorityClass name assigned to RPC pods. Leave empty to inherit namespace defaults.
+  rpc: ""
+
 # Pod-level security context shared by all containers.
 podSecurityContext:
   {}