fix: Make MIW / Keycloak constant static IPs as variables (#278)

mxd/README.md

@@ -222,6 +222,7 @@ Alternatively, please check out the [Postman collections here](./postman)
 * [File Transfer: Amazon S3 to Azure Blob Storage](./docs/File%20Transfer%20S3%20to%20Azure.md)
 * [Simplify negotiation and transfer using the EDR API](./docs/EDR%20Transfer%20Tutorial.md)
 * [Add a new Participant](./docs/Trudy%20Connector%20Tutorial.md)
+* [Deploying MXD on Remote Kubernetes Cluster (AWS / GCP)](./docs/MXD%20Remote%20Deployment.md)
 
 ## 4. Improving the setup
 

mxd/docs/MXD Remote Deployment.md

@@ -0,0 +1,13 @@
+# Deploying MXD on Remote Kubernetes Cluster (AWS / GCP)
+
+We should be able to deploy MXD on a Kubernetes cluster deployed on a local machine / computer as per the steps defined in the [MXD README](../README.md#2-basic-dataspace-setup).
+But there are certain changes needed if we want to deploy it on a remote Kubernetes cluster.
+
+## Provide Static IP for MIW / Keycloak
+MIW and Keycloak both require static IPs.
+Different Kubernetes clusters may have different allowed IP ranges.
+So, we can pass these IPs as Terraform variable while running `terraform apply`.
+
+```shell
+terraform.exe apply -var miw-static-ip="10.96.81.225" -var keycloak-static-ip="10.96.103.90"
+```

mxd/keycloak.tf

@@ -146,6 +146,6 @@ resource "kubernetes_service" "keycloak" {
 }
 
 locals {
-  keycloak-ip  = "10.96.103.80"
+  keycloak-ip  = var.keycloak-static-ip
   keycloak-url = "${local.keycloak-ip}:${var.keycloak-port}"
 }

mxd/miw.tf

@@ -130,7 +130,7 @@ resource "kubernetes_service" "miw" {
 }
 
 locals {
-  miw-ip         = "10.96.81.222"
+  miw-ip         = var.miw-static-ip
   miw-url        = "${local.miw-ip}:${var.miw-api-port}"
   keycloak-realm = "miw_test"
 }

mxd/variables.tf

@@ -34,10 +34,18 @@ variable "postgres-port" {
   default = 5432
 }
 
+variable "keycloak-static-ip" {
+  default = "10.96.103.80"
+}
+
 variable "keycloak-port" {
   default = 8080
 }
 
+variable "miw-static-ip" {
+  default = "10.96.81.222"
+}
+
 variable "miw-api-port" {
   default = 8000
 }