feat: add drain_scheduler_enabled to run the cron scheduler in the drain

Adds a drain_scheduler_enabled variable (default false) that is passed to the
drain via the spacelift-drain secret as DRAIN_SCHEDULER_ENABLED. Off by default,
Postgres queue so no IAM change needed.

Author: haluz

outputs.tf

@@ -234,6 +234,8 @@ output "kubernetes_secrets" {
     DRAIN_CONCURRENCY_EVENTS          = var.drain_concurrency_events
     DRAIN_CONCURRENCY_IOT             = var.drain_concurrency_iot
     DRAIN_CONCURRENCY_WEBHOOKS        = var.drain_concurrency_webhooks
+
+    DRAIN_SCHEDULER_ENABLED = var.drain_scheduler_enabled
   })
 }
 

templates/kubernetes-secrets.tftpl

@@ -61,3 +61,4 @@ stringData:
   DRAIN_CONCURRENCY_EVENTS: "${DRAIN_CONCURRENCY_EVENTS}"
   DRAIN_CONCURRENCY_IOT: "${DRAIN_CONCURRENCY_IOT}"
   DRAIN_CONCURRENCY_WEBHOOKS: "${DRAIN_CONCURRENCY_WEBHOOKS}"
+  DRAIN_SCHEDULER_ENABLED: "${DRAIN_SCHEDULER_ENABLED}"

variables.tf

@@ -147,6 +147,12 @@ variable "spacelift_version" {
   default     = ""
 }
 
+variable "drain_scheduler_enabled" {
+  type        = bool
+  description = "When true, the drain also runs the cron scheduler. Leave false to keep using the standalone scheduler deployment."
+  default     = false
+}
+
 variable "drain_concurrency_async_jobs" {
   type        = number
   description = "Number of concurrent receivers for the async-jobs queue per drain pod."