Merge pull request #22 from hbarros-caylent/CA-94-logs-cw

CA-94 adding cloudwatch logs support

Author: hbarros-caylent

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Tamr Terraform Template Repo
 
+## v3.1.0 - November 3rd 2021
+* Adds variables `enabled_cloudwatch_logs_exports`, `param_log_min_duration_statement` and `param_log_statement` configuring the logs and its publishing to CloudWatch
+
 ## v3.0.0 - July 27th 2021
 * Updates default engine version to not specify a minor version
 * Adds new variable `auto_minor_version_upgrade` to allow AWS to upgrade RDS minor versions

VERSION

@@ -1 +1 @@
-3.0.0
+3.1.0

main.tf

@@ -6,7 +6,15 @@ resource "aws_db_parameter_group" "rds_postgres_pg" {
   name        = var.parameter_group_name
   family      = var.parameter_group_family
   description = "TAMR RDS parameter group"
-  tags        = local.effective_tags
+  parameter {
+    name  = "log_statement"
+    value = var.param_log_statement
+  }
+  parameter {
+    name  = "log_min_duration_statement"
+    value = var.param_log_min_duration_statement
+  }
+  tags = local.effective_tags
 }
 
 resource "aws_db_subnet_group" "rds_postgres_subnet_group" {
@@ -46,6 +54,8 @@ resource "aws_db_instance" "rds_postgres" {
 
   apply_immediately = var.apply_immediately
 
+  enabled_cloudwatch_logs_exports = var.enabled_cloudwatch_logs_exports ? ["postgresql", "upgrade"] : []
+
   copy_tags_to_snapshot = var.copy_tags_to_snapshot
   tags                  = local.effective_tags
 

outputs.tf

@@ -28,3 +28,11 @@ output "rds_username" {
 output "rds_dbname" {
   value = aws_db_instance.rds_postgres.name
 }
+
+output "cloudwatch_logs_path" {
+  value = (
+    var.enabled_cloudwatch_logs_exports ?
+    format("/aws/rds/instance/%s/postgresql", aws_db_instance.rds_postgres.id)
+    : ""
+  )
+}

variables.tf

@@ -27,6 +27,18 @@ variable "parameter_group_name" {
   default     = "rds-postgres-pg"
 }
 
+variable "param_log_min_duration_statement" {
+  description = "(ms) Sets the minimum execution time above which statements will be logged."
+  type        = string
+  default     = "-1"
+}
+
+variable "param_log_statement" {
+  description = "Sets the type of statements logged. Valid values are none, ddl, mod, all"
+  type        = string
+  default     = "none"
+}
+
 variable "identifier_prefix" {
   description = "Identifier prefix for the RDS instance"
   type        = string
@@ -154,3 +166,9 @@ variable "auto_minor_version_upgrade" {
   type        = bool
   description = "Indicates that minor engine upgrades will be applied automatically to the DB instance during the maintenance window"
 }
+
+variable "enabled_cloudwatch_logs_exports" {
+  default     = true
+  type        = bool
+  description = "Indicates that postgresql logs will be configured to be sent automatically to Cloudwatch"
+}