Merge pull request #23 from zerodha/set-region-clients

feat: allow users to set region for nomad clients

Author: Thunderbottom

modules/nomad-clients/locals.tf

@@ -1,5 +1,6 @@
 locals {
   setup_client = templatefile("${path.module}/scripts/setup_client.tftpl.sh", {
+    aws_region                     = var.aws_region
     route_53_resolver_address      = var.route_53_resolver_address
     enable_docker_plugin           = var.enable_docker_plugin
     nomad_join_tag_key             = "nomad_ec2_join"
@@ -11,4 +12,4 @@ locals {
       nomad_acl_enable = var.nomad_acl_enable
     })
   })
-}
+}

modules/nomad-clients/scripts/setup_client.tftpl.sh

@@ -83,7 +83,7 @@ set_hostname() {
 prepare_dns_config() {
   cat <<EOF >/etc/nomad.d/route53_resolv.conf
 nameserver ${route_53_resolver_address}
-search ap-south-1.compute.internal
+search ${aws_region}.compute.internal
 EOF
 }
 
@@ -130,7 +130,7 @@ EOF
 client {
   enabled = true
   server_join {
-    retry_join = ["provider=aws region=ap-south-1 tag_key=${nomad_join_tag_key} tag_value=${nomad_join_tag_value}"]
+    retry_join = ["provider=aws region=${aws_region} tag_key=${nomad_join_tag_key} tag_value=${nomad_join_tag_value}"]
   }
   meta {
 $(for tag in "$${AWS_TAGS[@]}"; do

modules/nomad-clients/variables.tf

@@ -6,6 +6,13 @@ variable "ami" {
   nullable    = false
 }
 
+variable "aws_region" {
+  description = "AWS region to deploy the cluster in"
+  type        = string
+  default     = "ap-south-1"
+  nullable    = false
+}
+
 variable "client_name" {
   description = "Name of the Auto Scaling Group (ASG) nodes deployed as Nomad clients"
   type        = string