fix(DMVP-6480): ProxySQL setup on RDS

modules/proxysql/main.tf

@@ -0,0 +1,39 @@
+resource "helm_release" "proxysql" {
+  name       = var.name
+  chart      = "christianhuth/proxysql"
+  repository = "proxysql"
+  namespace  = var.namespace
+
+  values = [
+    templatefile(
+      "${path.module}/values.yaml",
+      {
+        replica_count                = var.proxysql_config.replicas
+        proxysql_admin_user          = var.proxysql_config.username
+        proxysql_admin_password      = var.proxysql_config.password
+        mysql_max_connections        = var.mysql_config.max_connections
+        mysql_query_retries          = var.mysql_config.query_retries
+        mysql_wait_timeout           = var.mysql_config.timeout
+        mysql_server_hostname        = var.mysql_config.hostname
+        mysql_server_port            = var.mysql_config.port
+        mysql_server_hostgroup       = var.mysql_config.hostgroup
+        mysql_server_max_connections = var.mysql_config.server_max_connections
+        mysql_user_username          = var.mysql_config.username
+        mysql_user_password          = var.mysql_config.password
+        mysql_user_default_hostgroup = var.mysql_config.default_hostgroup
+        mysql_user_max_connections   = var.mysql_config.user_max_connections
+        readwritesplit               = var.mysql_config.readwritesplit
+      }
+    )
+  ]
+
+  depends_on = [
+    kubernetes_namespace.proxysql
+  ]
+}
+
+resource "kubernetes_namespace" "proxysql" {
+  metadata {
+    name = var.namespace
+  }
+}

modules/proxysql/tests/basic/main.tf

@@ -0,0 +1,30 @@
+locals {
+  eks_name = "eks"
+}
+
+module "proxysql" {
+  source = "../../"
+
+  name = "proxysql"
+
+  proxysql_config = {
+    replicas = 2
+    username = "proxysqladmin"
+    password = "proxysqladmin"
+  }
+
+  mysql_config = {
+    max_connections        = 20480
+    query_retries          = 5
+    timeout                = 28800000
+    hostname               = "<hostname>.<region>.rds.amazonaws.com"
+    port                   = 3306
+    hostgroup              = 1
+    server_max_connections = 10000
+    username               = "admin"
+    password               = "admin"
+    readwritesplit         = false
+    default_hostgroup      = 1
+    user_max_connections   = 10000
+  }
+}

modules/proxysql/tests/basic/provider.tf

@@ -0,0 +1,21 @@
+data "aws_eks_cluster" "this" {
+  name = local.eks_name
+}
+
+data "aws_eks_cluster_auth" "this" {
+  name = local.eks_name
+}
+
+provider "helm" {
+  kubernetes {
+    host                   = data.aws_eks_cluster.this.endpoint
+    cluster_ca_certificate = base64decode(data.aws_eks_cluster.this.certificate_authority[0].data)
+    token                  = data.aws_eks_cluster_auth.this.token
+  }
+}
+
+provider "kubernetes" {
+  host                   = data.aws_eks_cluster.this.endpoint
+  cluster_ca_certificate = base64decode(data.aws_eks_cluster.this.certificate_authority[0].data)
+  token                  = data.aws_eks_cluster_auth.this.token
+}

modules/proxysql/values.yaml

@@ -0,0 +1,30 @@
+replicaCount: ${replica_count}
+
+proxysql:
+  admin:
+    user: "${proxysql_admin_user}"
+    password: "${proxysql_admin_password}"
+
+  mysql:
+    maxConnections: ${mysql_max_connections}
+    queryRetriesOnFailure: ${mysql_query_retries}
+    wait_timeout: ${mysql_wait_timeout}
+    readWriteSplit: ${readwritesplit}
+    servers:
+      - hostname: "${mysql_server_hostname}"
+        port: ${mysql_server_port}
+        hostgroup: ${mysql_server_hostgroup}
+        maxConnections: ${mysql_server_max_connections}
+    users:
+      - username: "${mysql_user_username}"
+        password: "${mysql_user_password}"
+        defaultHostgroup: ${mysql_user_default_hostgroup}
+        maxConnections: ${mysql_user_max_connections}
+
+service:
+  type: ClusterIP
+  ports:
+    admin:
+      port: 6032
+    mysql:
+      port: 6033

modules/proxysql/variables.tf

@@ -0,0 +1,40 @@
+variable "name" {
+  type        = string
+  description = "Name"
+}
+
+variable "namespace" {
+  type        = string
+  description = "Namespace"
+  default     = "proxysql"
+}
+
+variable "proxysql_config" {
+  type = any
+  default = {
+    replicas = 2
+    username = "admin"
+    password = "admin"
+  }
+  description = "ProxySQL configuration, including replicas and admin credentials."
+}
+
+
+variable "mysql_config" {
+  type = any
+  default = {
+    max_connections        = 20480
+    query_retries          = 5
+    timeout                = 28800000
+    hostname               = ""
+    port                   = 3306
+    hostgroup              = 1
+    server_max_connections = 10000
+    username               = "admin"
+    password               = "admin"
+    default_hostgroup      = 1
+    user_max_connections   = 20480
+    readwritesplit         = false
+  }
+  description = "MySQL configuration, including connections, retries, and optional server/user details."
+}

modules/proxysql/version.tf

@@ -0,0 +1,19 @@
+terraform {
+  required_version = ">= 0.15.0"
+
+  required_providers {
+    aws = {
+      source = "hashicorp/aws"
+    }
+
+    helm = {
+      source  = "hashicorp/helm"
+      version = "~> 2.4.0"
+    }
+
+    kubernetes = {
+      source  = "hashicorp/kubernetes"
+      version = "2.12.1"
+    }
+  }
+}