Terraform security group example

gistfile1.txt

resource "aws_security_group" "jenkins" {
  name        = "${var.env}_${var.tier}_jenkins_secgroup"
  vpc_id      = "${var.vpc_id}"
  description = "jenkins security group"

  tags {
      Name      = "${var.env}_${var.tier}_jenkins_secgroup"
      TERRAFORM = "true"
      ENV       = "${var.env}"
      TIER      = "${var.tier}"
  }

  ingress {
    protocol    = -1
    from_port   = 0
    to_port     = 0
    cidr_blocks = ["${var.vpc_cidr}", "${split(",", var.peered_vpc_cidr)}"]
  }

  ingress {
    protocol    = "tcp"
    from_port   = 22
    to_port     = 22
    cidr_blocks = ["${var.company_ip}"]
  }

  ingress {
    protocol    = "tcp"
    from_port   = 80
    to_port     = 80
    cidr_blocks = [
        "${var.company_ip}",
        "${var.github_ip}",
        "${var.some_ip}",
        "${var.some_other_ip}"
    ]
  }

  ingress {
    protocol    = "tcp"
    from_port   = 443
    to_port     = 443
    cidr_blocks = [
        "${var.company_ip}",
        "${var.github_ip}",
        "${var.some_ip}",
        "${var.some_other_ip}"
    ]
  }

  ingress {
    from_port   = 8
    to_port     = 0
    protocol    = "icmp"
    cidr_blocks = ["${var.company_ip}"]
  }

  egress {
    protocol    = -1
    from_port   = 0
    to_port     = 0
    cidr_blocks = ["0.0.0.0/0"]
  }
}