Consul-Terraform-Sync

Once all infrastructure is deployed, you can use Consul-Terraform-Sync to monitor the changes in your NGINX instances and modify your F5 BigIP configuration accordingly, without the need for a network operator.

First, move into the nia directory in the repository.

cd ../nia/
  • Next, you will configure Consul-Terraform-Sync.

If you deployed the infrastructure using the provided scripts, the configuration file is produced automatically for you under the nia folder.

  • Look at your configuration file to learn Note Don’t use or copy this file This is just to show you how your file might look
config.hcl

driver "terraform" {
log = true
required_providers {
  bigip = {
  source = "F5Networks/bigip"
   }
 }
}
#log_level = "trace"
consul {
address = "3.86.229.209:8500"
 }

terraform_provider "bigip" {
    address  = "52.44.244.96:8443"
    username = "admin"
    password = "L5l81KPsxv"
 }

task {
name = "AS3"
description = "BIG-IP example"
source = "./bigip-example"
providers = ["bigip"]
services = ["nginx"]
 }
  • Finally, you can start Consul-Terraform-Sync.
Note: Once you Start the Consul-Terraform-Sync open a new Web Shell for future excercise
let this Web Shell keep running in the background
consul-terraform-sync -config-file config.hcl

...
 [INFO] (cli) running controller in daemon mode
 [INFO] (cli) setting up controller: readwrite
 [INFO] (ctrl) initializing Consul client and testing connection
 [INFO] (cli) initializing controller
 [INFO] (ctrl) initializing driver
 [INFO] (ctrl) initializing all tasks
 [INFO] (client.terraformcli) Terraform logging is set, Terraform logs will output with Sync logs
 [INFO] (driver.terraform) retrieved 0 Terraform handlers for task 'AS3'
 [INFO] (templates.tftmpl) overwriting providers.tfvars in root module for task "AS3"
 [INFO] (templates.tftmpl) overwriting main.tf in root module for task "AS3"
 [INFO] (templates.tftmpl) overwriting variables.tf in root module for task "AS3"
 [INFO] (templates.tftmpl) overwriting terraform.tfvars.tmpl in root module for task "AS3"
 [INFO] running Terraform command: ./f5-terraform-consul-sd-webinar/nia/terraform version -json
 {
 "terraform_version": "0.13.7",
 "terraform_revision": "",
 "provider_selections": {
     "registry.terraform.io/f5networks/bigip": "1.8.0"
 },
 "terraform_outdated": true
 }

 [INFO] running Terraform command: ./f5-terraform-consul-sd-webinar/nia/terraform init -no-color -force-copy -input=false -lock-timeout=0s -backend=true -get=true -upgrade=false -lock=true -get-plugins=true -verify-plugins=true
 Initializing modules...

 Initializing the backend...

 Initializing provider plugins...
 - Using previously-installed f5networks/bigip v1.8.0

 Terraform has been successfully initialized!
 [INFO] running Terraform command: ./f5-terraform-consul-sd-webinar/nia/terraform workspace new -no-color AS3
 Workspace "AS3" already exists
 [INFO] running Terraform command: ./f5-terraform-consul-sd-webinar/nia/terraform workspace select -no-color AS3
 [INFO] running Terraform command: ./f5-terraform-consul-sd-webinar/nia/terraform validate -no-color -json
 {
 "valid": true,
 "error_count": 0,
 "warning_count": 0,
 "diagnostics": []
 }
 [INFO] (ctrl) driver initialized
 [INFO] (ctrl) executing all tasks once through
 [INFO] (ctrl) executing task AS3
 [INFO] running Terraform command: ./f5-terraform-consul-sd-webinar/nia/terraform apply -no-color -auto-approve -input=false -var-file=terraform.tfvars -var-file=providers.tfvars -lock=true -parallelism=10 -refresh=true
 Acquiring state lock. This may take a few moments...
 module.AS3.bigip_event_service_discovery.event_pools["nginx"]: Refreshing state... [id=~Consul_SD~Nginx~nginx_pool]
 module.AS3.bigip_event_service_discovery.event_pools["nginx"]: Modifying... [id=~Consul_SD~Nginx~nginx_pool]
 module.AS3.bigip_event_service_discovery.event_pools["nginx"]: Modifications complete after 1s [id=~Consul_SD~Nginx~nginx_pool]

 Apply complete! Resources: 0 added, 1 changed, 0 destroyed.
 Releasing state lock. This may take a few moments...
 [INFO] (ctrl) task completed AS3
 [INFO] (ctrl) all tasks completed once
 [INFO] (api) starting server at '8558'
 ...