Upgrade infra to PostgreSQL 16

Author: jonatanklosko

infra/database.tf

@@ -34,18 +34,35 @@ resource "aws_db_subnet_group" "this" {
   subnet_ids  = aws_subnet.private[*].id
 }
 
+resource "aws_db_parameter_group" "this" {
+  name   = var.name_prefix
+  family = "postgres16"
+
+  parameter {
+    name  = "rds.force_ssl"
+    value = "0"
+  }
+
+  lifecycle {
+    create_before_destroy = true
+  }
+}
+
 resource "aws_db_instance" "this" {
   identifier        = var.name_prefix
   allocated_storage = 20
   storage_type      = "gp2"
   instance_class    = "db.t3.medium"
 
-  engine                     = "postgres"
-  engine_version             = "12.14"
-  auto_minor_version_upgrade = true
-  db_name                    = var.db_name
-  username                   = var.db_username
-  password                   = var.db_password
+  engine                      = "postgres"
+  engine_version              = "16.3"
+  auto_minor_version_upgrade  = true
+  db_name                     = var.db_name
+  username                    = var.db_username
+  password                    = var.db_password
+  parameter_group_name        = aws_db_parameter_group.this.name
+  allow_major_version_upgrade = true
+  apply_immediately           = true
 
   availability_zone      = var.availability_zones[0]
   db_subnet_group_name   = aws_db_subnet_group.this.name