Remove the hostname override in user_data passed to the instance

main.tf

@@ -1,5 +1,3 @@
-data "aws_region" "current" {}
-
 module "vpc" {
   source = "./modules/vpc"
 
@@ -9,7 +7,6 @@ module "vpc" {
 
 module "user_data" {
   source             = "./modules/user_data"
-  hostname           = "agentless-scanning-${data.aws_region.current.name}"
   api_key            = var.api_key
   api_key_secret_arn = var.api_key_secret_arn
   site               = var.site

modules/user_data/README.md

@@ -31,7 +31,6 @@ No modules.
 | <a name="input_agent_repo_url"></a> [agent\_repo\_url](#input\_agent\_repo\_url) | Specifies the agent distribution channel | `string` | `"datad0g.com"` | no |
 | <a name="input_api_key"></a> [api\_key](#input\_api\_key) | Specifies the API key required by the Datadog Agent to submit vulnerabilities to Datadog | `string` | `null` | no |
 | <a name="input_api_key_secret_arn"></a> [api\_key\_secret\_arn](#input\_api\_key\_secret\_arn) | ARN of the secret holding the Datadog API key. Takes precedence over api\_key variable | `string` | `null` | no |
-| <a name="input_hostname"></a> [hostname](#input\_hostname) | Specifies the hostname the agentless-scanning agent will report as | `string` | n/a | yes |
 | <a name="input_scanner_version"></a> [scanner\_version](#input\_scanner\_version) | Specifies the agentless scanner version installed | `string` | `"50.0~agentless~scanner~2024011701"` | no |
 | <a name="input_site"></a> [site](#input\_site) | By default the Agent sends its data to Datadog US site. If your organization is on another site, you must update it. See https://docs.datadoghq.com/getting_started/site/ | `string` | `"datadoghq.com"` | no |
 

modules/user_data/main.tf

@@ -8,7 +8,6 @@ resource "terraform_data" "template" {
     }
   }
   input = templatefile("${path.module}/templates/install.sh.tftpl", {
-    hostname           = var.hostname,
     api_key            = var.api_key,
     api_key_secret_arn = var.api_key_secret_arn
     site               = var.site,

modules/user_data/templates/install.sh.tftpl

@@ -4,8 +4,6 @@ set -u
 set -e
 set -o pipefail
 
-echo "${hostname}" > /etc/hostname
-
 %{ if api_key_secret_arn != null }
 apt update
 apt install awscli -y
@@ -17,7 +15,6 @@ DD_API_KEY=${api_key}
 # Install the agent
 DD_API_KEY=$DD_API_KEY \
   DD_SITE="${site}" \
-  DD_HOSTNAME="${hostname}" \
   DD_REPO_URL="${agent_repo_url}" \
   DD_AGENT_DIST_CHANNEL="beta" \
   DD_AGENT_MINOR_VERSION="${scanner_version}" \

modules/user_data/variables.tf

@@ -1,8 +1,3 @@
-variable "hostname" {
-  description = "Specifies the hostname the agentless-scanning agent will report as"
-  type        = string
-}
-
 variable "api_key" {
   description = "Specifies the API key required by the Datadog Agent to submit vulnerabilities to Datadog"
   type        = string