Added Route53 DNS weighted blue green

packer/config/consul/nodejs.json

@@ -2,7 +2,7 @@
   "service": {
     "name": "web",
     "port": 8888,
-    "tags": ["nodejs"],
+    "tags": ["nodejs", "{{ deploy }}"],
     "check": {
       "id": "nodejs",
       "name": "Running on port 8888",

terraform/modules/aws/compute/compute.tf

@@ -29,9 +29,11 @@ variable "haproxy_user_data"     { }
 variable "nodejs_blue_ami"            { }
 variable "nodejs_blue_node_count"     { }
 variable "nodejs_blue_instance_type"  { }
+variable "nodejs_blue_weight"         { }
 variable "nodejs_green_ami"           { }
 variable "nodejs_green_node_count"    { }
 variable "nodejs_green_instance_type" { }
+variable "nodejs_green_weight"        { }
 variable "nodejs_user_data"           { }
 
 module "haproxy" {
@@ -71,12 +73,14 @@ module "nodejs" {
   atlas_environment   = "${var.atlas_environment}"
   atlas_aws_global    = "${var.atlas_aws_global}"
   atlas_token         = "${var.atlas_token}"
+  blue_weight         = "${var.nodejs_blue_weight}"
   blue_ami            = "${var.nodejs_blue_ami}"
   blue_nodes          = "${var.nodejs_blue_node_count}"
   blue_instance_type  = "${var.nodejs_blue_instance_type}"
   green_ami           = "${var.nodejs_green_ami}"
   green_nodes         = "${var.nodejs_green_node_count}"
   green_instance_type = "${var.nodejs_green_instance_type}"
+  green_weight        = "${var.nodejs_green_weight}"
   user_data           = "${var.nodejs_user_data}"
   sub_domain          = "${var.sub_domain}"
   route_zone_id       = "${var.route_zone_id}"
@@ -88,6 +92,9 @@ output "haproxy_public_ips"   { value = "${module.haproxy.public_ips}" }
 output "haproxy_private_fqdn" { value = "${module.haproxy.private_fqdn}" }
 output "haproxy_public_fqdn"  { value = "${module.haproxy.public_fqdn}" }
 
-output "nodejs_zone_id"      { value = "${module.nodejs.zone_id}" }
-output "nodejs_elb_dns"      { value = "${module.nodejs.elb_dns}" }
-output "nodejs_private_fqdn" { value = "${module.nodejs.private_fqdn}" }
+output "nodejs_blue_elb_zone_id"   { value = "${module.nodejs.blue_elb_zone_id}" }
+output "nodejs_blue_private_fqdn"  { value = "${module.nodejs.blue_private_fqdn}" }
+output "nodejs_blue_elb_dns"       { value = "${module.nodejs.blue_elb_dns}" }
+output "nodejs_green_elb_zone_id"  { value = "${module.nodejs.green_elb_zone_id}" }
+output "nodejs_green_private_fqdn" { value = "${module.nodejs.green_private_fqdn}" }
+output "nodejs_green_elb_dns"      { value = "${module.nodejs.green_elb_dns}" }

terraform/modules/aws/compute/nodejs/nodejs.tf

@@ -21,9 +21,11 @@ variable "atlas_token"         { }
 variable "blue_ami"            { }
 variable "blue_nodes"          { }
 variable "blue_instance_type"  { }
+variable "blue_weight"         { }
 variable "green_ami"           { }
 variable "green_nodes"         { }
 variable "green_instance_type" { }
+variable "green_weight"        { }
 variable "user_data"           { }
 variable "sub_domain"          { }
 variable "route_zone_id"       { }
@@ -76,8 +78,42 @@ EOF
   }
 }
 
-resource "aws_elb" "nodejs" {
-  name                        = "${var.name}"
+resource "aws_elb" "blue" {
+  name                        = "${var.name}-blue"
+  connection_draining         = true
+  connection_draining_timeout = 400
+
+  subnets         = ["${split(",", var.public_subnet_ids)}"]
+  security_groups = ["${aws_security_group.elb.id}"]
+
+  lifecycle { create_before_destroy = true }
+
+  listener {
+    lb_port           = 80
+    lb_protocol       = "http"
+    instance_port     = 8888
+    instance_protocol = "http"
+  }
+
+  listener {
+    lb_port            = 443
+    lb_protocol        = "https"
+    instance_port      = 8888
+    instance_protocol  = "http"
+    ssl_certificate_id = "${aws_iam_server_certificate.nodejs.arn}"
+  }
+
+  health_check {
+    healthy_threshold   = 2
+    unhealthy_threshold = 3
+    timeout             = 10
+    interval            = 15
+    target              = "HTTP:8888/"
+  }
+}
+
+resource "aws_elb" "green" {
+  name                        = "${var.name}-green"
   connection_draining         = true
   connection_draining_timeout = 400
 
@@ -130,6 +166,7 @@ resource "template_file" "blue_user_data" {
     atlas_environment = "${var.atlas_environment}"
     atlas_token       = "${var.atlas_token}"
     node_name         = "${var.name}"
+    deploy            = "blue"
     site_ssl_cert     = "${var.site_ssl_cert}"
     vault_ssl_cert    = "${var.vault_ssl_cert}"
     vault_token       = "${var.vault_token}"
@@ -150,6 +187,7 @@ resource "template_file" "green_user_data" {
     atlas_environment = "${var.atlas_environment}"
     atlas_token       = "${var.atlas_token}"
     node_name         = "${var.name}"
+    deploy            = "green"
     site_ssl_cert     = "${var.site_ssl_cert}"
     vault_ssl_cert    = "${var.vault_ssl_cert}"
     vault_token       = "${var.vault_token}"
@@ -169,29 +207,49 @@ module "deploy" {
   key_name            = "${var.key_name}"
   azs                 = "${var.azs}"
   private_subnet_ids  = "${var.private_subnet_ids}"
-  elb_id              = "${aws_elb.nodejs.id}"
+  blue_elb_id         = "${aws_elb.blue.id}"
   blue_ami            = "${var.blue_ami}"
   blue_nodes          = "${var.blue_nodes}"
   blue_instance_type  = "${var.blue_instance_type}"
   blue_user_data      = "${template_file.blue_user_data.rendered}"
+  green_elb_id        = "${aws_elb.green.id}"
   green_ami           = "${var.green_ami}"
   green_nodes         = "${var.green_nodes}"
   green_instance_type = "${var.green_instance_type}"
   green_user_data     = "${template_file.green_user_data.rendered}"
 }
 
-resource "aws_route53_record" "nodejs" {
-  zone_id = "${var.route_zone_id}"
-  name    = "nodejs.${var.sub_domain}"
-  type    = "A"
+resource "aws_route53_record" "blue" {
+  zone_id        = "${var.route_zone_id}"
+  name           = "nodejs.${var.sub_domain}"
+  type           = "A"
+  weight         = "${var.blue_weight}"
+  set_identifier = "blue"
+
+  alias {
+    name                   = "${aws_elb.blue.dns_name}"
+    zone_id                = "${aws_elb.blue.zone_id}"
+    evaluate_target_health = true
+  }
+}
+
+resource "aws_route53_record" "green" {
+  zone_id        = "${var.route_zone_id}"
+  name           = "nodejs.${var.sub_domain}"
+  type           = "A"
+  weight         = "${var.green_weight}"
+  set_identifier = "green"
 
   alias {
-    name                   = "${aws_elb.nodejs.dns_name}"
-    zone_id                = "${aws_elb.nodejs.zone_id}"
+    name                   = "${aws_elb.green.dns_name}"
+    zone_id                = "${aws_elb.green.zone_id}"
     evaluate_target_health = true
   }
 }
 
-output "zone_id"      { value = "${aws_elb.nodejs.zone_id}" }
-output "elb_dns"      { value = "${aws_elb.nodejs.dns_name}" }
-output "private_fqdn" { value = "${aws_route53_record.nodejs.fqdn}" }
+output "blue_elb_zone_id"   { value = "${aws_elb.blue.zone_id}" }
+output "blue_private_fqdn"  { value = "${aws_route53_record.blue.fqdn}" }
+output "blue_elb_dns"       { value = "${aws_elb.blue.dns_name}" }
+output "green_elb_zone_id"  { value = "${aws_elb.green.zone_id}" }
+output "green_private_fqdn" { value = "${aws_route53_record.green.fqdn}" }
+output "green_elb_dns"      { value = "${aws_elb.green.dns_name}" }

terraform/modules/aws/util/deploy/deploy.tf

@@ -8,11 +8,12 @@ variable "vpc_cidr"            { }
 variable "key_name"            { }
 variable "azs"                 { }
 variable "private_subnet_ids"  { }
-variable "elb_id"              { }
+variable "blue_elb_id"         { }
 variable "blue_ami"            { }
 variable "blue_nodes"          { }
 variable "blue_instance_type"  { }
 variable "blue_user_data"      { }
+variable "green_elb_id"        { }
 variable "green_ami"           { }
 variable "green_nodes"         { }
 variable "green_instance_type" { }
@@ -60,7 +61,7 @@ resource "aws_autoscaling_group" "blue" {
   wait_for_elb_capacity = "${var.blue_nodes}"
   availability_zones    = ["${split(",", var.azs)}"]
   vpc_zone_identifier   = ["${split(",", var.private_subnet_ids)}"]
-  load_balancers        = ["${var.elb_id}"]
+  load_balancers        = ["${var.blue_elb_id}"]
 
   lifecycle { create_before_destroy = true }
 
@@ -91,7 +92,7 @@ resource "aws_autoscaling_group" "green" {
   wait_for_elb_capacity = "${var.green_nodes}"
   availability_zones    = ["${split(",", var.azs)}"]
   vpc_zone_identifier   = ["${split(",", var.private_subnet_ids)}"]
-  load_balancers        = ["${var.elb_id}"]
+  load_balancers        = ["${var.green_elb_id}"]
 
   lifecycle { create_before_destroy = true }
 

terraform/modules/templates/nodejs.sh.tpl

@@ -39,6 +39,7 @@ sed -i -- "s/{{ atlas_environment }}/${atlas_environment}/g" /etc/consul.d/base.
 sed -i -- "s/{{ atlas_token }}/${atlas_token}/g" /etc/consul.d/base.json
 sed -i -- "s/{{ datacenter }}/${atlas_environment}/g" /etc/consul.d/base.json
 sed -i -- "s/{{ node_name }}/$NAME/g" /etc/consul.d/base.json
+sed -i -- "s/{{ deploy }}/${deploy}/g" /etc/consul.d/nodejs.json
 
 service consul restart
 

terraform/providers/aws/us_east_1_prod/terraform.tfvars

@@ -80,7 +80,9 @@ haproxy_artifacts     = "latest" # Comma separated list of artifact version numb
 
 nodejs_blue_node_count     = "2"
 nodejs_blue_instance_type  = "t2.micro"
+nodejs_blue_weight         = "100"
 nodejs_green_node_count    = "0"
 nodejs_green_instance_type = "t2.micro"
+nodejs_green_weight        = "0"
 nodejs_artifact_name       = "aws-us-east-1-ubuntu-nodejs"
 nodejs_artifacts           = "latest,latest" # Comma separated "blue,green" artifact version numbers, list length must be 2

terraform/providers/aws/us_east_1_prod/us_east_1_prod.tf

@@ -44,12 +44,14 @@ variable "haproxy_instance_type" { }
 variable "haproxy_artifact_name" { }
 variable "haproxy_artifacts"     { }
 
-variable "nodejs_blue_node_count"    { }
-variable "nodejs_blue_instance_type" { }
+variable "nodejs_blue_node_count"     { }
+variable "nodejs_blue_instance_type"  { }
+variable "nodejs_blue_weight"         { }
 variable "nodejs_green_node_count"    { }
 variable "nodejs_green_instance_type" { }
-variable "nodejs_artifact_name" { }
-variable "nodejs_artifacts"     { }
+variable "nodejs_green_weight"        { }
+variable "nodejs_artifact_name"       { }
+variable "nodejs_artifacts"           { }
 
 provider "aws" {
   region = "${var.region}"
@@ -210,9 +212,11 @@ module "compute" {
   nodejs_blue_ami            = "${element(split(",", module.artifact_nodejs.amis), 0)}"
   nodejs_blue_node_count     = "${var.nodejs_blue_node_count}"
   nodejs_blue_instance_type  = "${var.nodejs_blue_instance_type}"
+  nodejs_blue_weight         = "${var.nodejs_blue_weight}"
   nodejs_green_ami           = "${element(split(",", module.artifact_nodejs.amis), 1)}"
   nodejs_green_node_count    = "${var.nodejs_green_node_count}"
   nodejs_green_instance_type = "${var.nodejs_green_instance_type}"
+  nodejs_green_weight        = "${var.nodejs_green_weight}"
   nodejs_user_data           = "${module.templates.ubuntu_nodejs_user_data}"
 }
 
@@ -238,8 +242,11 @@ Visit the static website hosted on S3:
           ${module.website.endpoint}
 
 Visit the Node.js website:
-  Node.js: ${module.compute.nodejs_private_fqdn}
-           ${module.compute.nodejs_elb_dns}
+  Node.js (blue): ${module.compute.nodejs_blue_private_fqdn}
+                  ${module.compute.nodejs_blue_elb_dns}
+
+  Node.js (green): ${module.compute.nodejs_green_private_fqdn}
+                   ${module.compute.nodejs_green_elb_dns}
 
   HAProxy: ${module.compute.haproxy_public_fqdn}
            ${join("\n           ", formatlist("http://%s/", split(",", module.compute.haproxy_public_ips)))}

terraform/providers/aws/us_east_1_staging/terraform.tfvars

@@ -80,7 +80,9 @@ haproxy_artifacts     = "latest" # Comma separated list of artifact version numb
 
 nodejs_blue_node_count     = "2"
 nodejs_blue_instance_type  = "t2.micro"
+nodejs_blue_weight         = "100"
 nodejs_green_node_count    = "0"
 nodejs_green_instance_type = "t2.micro"
+nodejs_green_weight        = "0"
 nodejs_artifact_name       = "aws-us-east-1-ubuntu-nodejs"
 nodejs_artifacts           = "latest,latest" # Comma separated "blue,green" artifact version numbers, list length must be 2

terraform/providers/aws/us_east_1_staging/us_east_1_staging.tf

@@ -44,12 +44,14 @@ variable "haproxy_instance_type" { }
 variable "haproxy_artifact_name" { }
 variable "haproxy_artifacts"     { }
 
-variable "nodejs_blue_node_count"    { }
-variable "nodejs_blue_instance_type" { }
+variable "nodejs_blue_node_count"     { }
+variable "nodejs_blue_instance_type"  { }
+variable "nodejs_blue_weight"         { }
 variable "nodejs_green_node_count"    { }
 variable "nodejs_green_instance_type" { }
-variable "nodejs_artifact_name" { }
-variable "nodejs_artifacts"     { }
+variable "nodejs_green_weight"        { }
+variable "nodejs_artifact_name"       { }
+variable "nodejs_artifacts"           { }
 
 provider "aws" {
   region = "${var.region}"
@@ -72,6 +74,8 @@ resource "terraform_remote_state" "aws_global" {
   config {
     name = "${var.atlas_username}/${var.atlas_aws_global}"
   }
+
+  lifecycle { create_before_destroy = true }
 }
 
 module "network" {
@@ -208,9 +212,11 @@ module "compute" {
   nodejs_blue_ami            = "${element(split(",", module.artifact_nodejs.amis), 0)}"
   nodejs_blue_node_count     = "${var.nodejs_blue_node_count}"
   nodejs_blue_instance_type  = "${var.nodejs_blue_instance_type}"
+  nodejs_blue_weight         = "${var.nodejs_blue_weight}"
   nodejs_green_ami           = "${element(split(",", module.artifact_nodejs.amis), 1)}"
   nodejs_green_node_count    = "${var.nodejs_green_node_count}"
   nodejs_green_instance_type = "${var.nodejs_green_instance_type}"
+  nodejs_green_weight        = "${var.nodejs_green_weight}"
   nodejs_user_data           = "${module.templates.ubuntu_nodejs_user_data}"
 }
 
@@ -236,8 +242,11 @@ Visit the static website hosted on S3:
           ${module.website.endpoint}
 
 Visit the Node.js website:
-  Node.js: ${module.compute.nodejs_private_fqdn}
-           ${module.compute.nodejs_elb_dns}
+  Node.js (blue): ${module.compute.nodejs_blue_private_fqdn}
+                  ${module.compute.nodejs_blue_elb_dns}
+
+  Node.js (green): ${module.compute.nodejs_green_private_fqdn}
+                   ${module.compute.nodejs_green_elb_dns}
 
   HAProxy: ${module.compute.haproxy_public_fqdn}
            ${join("\n           ", formatlist("http://%s/", split(",", module.compute.haproxy_public_ips)))}