feat: allow setting priority class (#80)

kubernetes priority classes control pod scheduling order and preemption during resource pressure. for pgdog, which may sit in the critical path of every database connection from applications, being preempted or starved of resources has immediate user-facing impact.

Author: davidmontoyago

templates/deployment.yaml

@@ -43,6 +43,9 @@ spec:
       {{- if .Values.serviceAccount.create }}
       serviceAccountName: {{ include "pgdog.serviceAccountName" . }}
       {{- end }}
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName }}
+      {{- end }}
       {{- if .Values.terminationGracePeriodSeconds }}
       terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }}
       {{- end }}

values.yaml

@@ -51,6 +51,10 @@ port: 6432
 # replicas indicates how many instances of PgDog will run (HA).
 replicas: 2
 
+# priorityClassName assigns a PriorityClass to pgdog pods for scheduling priority.
+# Not set by default; omitted from the pod spec unless explicitly specified.
+# Example: priorityClassName: production-critical
+
 # Uncomment to enable explicit grace period
 # terminationGracePeriodSeconds: 90