feat: add security groups

Author: dusdjhyeon

platform/terraform/sg/main.tf

@@ -28,5 +28,39 @@ module "alb_sg" {
   ingress_rules       = ["http-80-tcp"]
   ingress_cidr_blocks = ["0.0.0.0/0"]
 
+  egress_rules = ["all-all"]
+}
+
+module "rds_sg" {
+  source  = "terraform-aws-modules/security-group/aws"
+  version = "~> 5.0"
+
+  name        = "rds-sg"
+  description = "A RDS security group"
+  vpc_id      = module.vpc.vpc_id
+
+  ingress_with_cidr_blocks = [
+    {
+      from_port = tonumber(var.rds_port)
+      to_port   = tonumber(var.rds_port)
+      protocol  = "tcp"
+      cidr_blocks = "0.0.0.0/0"
+    },
+  ]
+
+  egress_rules = ["all-all"]
+}
+
+module "ec2_sg" {
+  source  = "terraform-aws-modules/security-group/aws"
+  version = "~> 5.0"
+
+  name        = "ec2-sg"
+  description = "A EC2 security group"
+  vpc_id      = module.vpc.vpc_id
+
+  ingress_rules       = ["http-80-tcp"]
+  ingress_cidr_blocks = ["0.0.0.0/0"]
+
   egress_rules = ["all-all"]
 }