Allow custom log group template input for fluent-bit

Author: OlamideOl1

aws/platform/main.tf

@@ -380,7 +380,7 @@ locals {
             auto_create_group true
             region ${data.aws_region.current.name}
             log_group_name ${module.cloudwatch_logs.log_group_name}
-            log_group_template ${var.logs_prefix}/$kubernetes['namespace_name']
+            log_group_template ${local.log_group_template_value}
             log_stream_prefix $${HOST_NAME}-
             log_stream_template $kubernetes['pod_name'].$kubernetes['container_name']
             log_retention_days ${var.logs_retention_in_days}
@@ -420,6 +420,11 @@ locals {
     })
   ]
 
+  log_group_template_value = coalesce(
+    var.log_group_template_override,
+    "${var.logs_prefix}/$kubernetes['namespace_name']"
+  )
+
   istio_ingress_values = [
     yamlencode({
       service = {

aws/platform/variables.tf

@@ -152,6 +152,12 @@ variable "k8s_namespace" {
   description = "Kubernetes namespace in which resources should be created"
 }
 
+variable "log_group_template_override" {
+  type        = string
+  default     = null
+  description = "Optional override for Fluent Bit log group template"
+}
+
 variable "logs_retention_in_days" {
   type        = number
   default     = 30