feat: ✨ add MariaDB flags and conf variables for custom configuration

main.tf

@@ -81,6 +81,10 @@ resource "kubernetes_stateful_set" "mariadb" {
               }
             }
           }
+          env {
+            name  = "MARIADB_EXTRA_FLAGS"
+            value = var.mariadb_flags
+          }
           port {
             name           = "tcp-mariadb"
             container_port = local.port
@@ -89,6 +93,23 @@ resource "kubernetes_stateful_set" "mariadb" {
             name       = "data"
             mount_path = "/bitnami/mariadb"
           }
+          dynamic "volume_mount" {
+            for_each = var.mariadb_conf != "" ? toset(["config"]) : toset([])
+            content {
+              name       = volume_mount.value
+              mount_path = "/opt/bitnami/mariadb/conf/my_custom.cnf"
+              sub_path   = "my_custom.cnf"
+            }
+          }
+        }
+        dynamic "volume" {
+          for_each = var.mariadb_conf != "" ? toset(["config"]) : toset([])
+          content {
+            name = volume.value
+            config_map {
+              name = kubernetes_config_map.mariadb_conf[volume.key].metadata.0.name
+            }
+          }
         }
       }
     }
@@ -156,3 +177,14 @@ resource "kubernetes_config_map" "mariadb" {
     MARIADB_DATABASE     = var.mariadb_db
   }
 }
+
+resource "kubernetes_config_map" "mariadb_conf" {
+  for_each = var.mariadb_conf != "" ? toset(["config"]) : toset([])
+  metadata {
+    name      = "mariadb-conf"
+    namespace = var.namespace
+  }
+  data = {
+    "my_custom.cnf" = var.mariadb_conf
+  }
+}

variables.tf

@@ -34,6 +34,18 @@ variable "mariadb_db" {
   sensitive   = true
 }
 
+variable "mariadb_conf" {
+  description = "MariaDB configuration file to enable custom configuration"
+  type        = string
+  default     = ""
+}
+
+variable "mariadb_flags" {
+  description = "Additional flags to pass to MariaDB startup"
+  type        = string
+  default     = ""
+}
+
 variable "stateful_set_name" {
   description = "Name of StatefulSet"
   type        = string