feat: region adjustment for load balancer (#721)

* remove deprecated "credential" resource of loadbalancer

* region adjustment load balancer
- adapted load balancer example

docs/data-sources/loadbalancer.md

@@ -27,10 +27,14 @@ data "stackit_loadbalancer" "example" {
 - `name` (String) Load balancer name.
 - `project_id` (String) STACKIT project ID to which the Load Balancer is associated.
 
+### Optional
+
+- `region` (String) The resource region. If not defined, the provider region is used.
+
 ### Read-Only
 
 - `external_address` (String) External Load Balancer IP address where this Load Balancer is exposed.
-- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","`name`".
+- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","region","`name`".
 - `listeners` (Attributes List) List of all listeners which will accept traffic. Limited to 20. (see [below for nested schema](#nestedatt--listeners))
 - `networks` (Attributes List) List of networks that listeners and targets reside in. (see [below for nested schema](#nestedatt--networks))
 - `options` (Attributes) Defines any optional functionality you want to have enabled on your load balancer. (see [below for nested schema](#nestedatt--options))

docs/resources/loadbalancer.md

@@ -35,10 +35,12 @@ resource "stackit_network_interface" "nic" {
   network_id = stackit_network.example_network.network_id
 }
 
-# Create a public IP and assign it to the network interface
+# Create a public IP for the load balancer
 resource "stackit_public_ip" "public-ip" {
-  project_id           = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
-  network_interface_id = stackit_network_interface.nic.network_interface_id
+  project_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
+  lifecycle {
+    ignore_changes = [network_interface_id]
+  }
 }
 
 # Create a key pair for accessing the server instance
@@ -48,7 +50,7 @@ resource "stackit_key_pair" "keypair" {
 }
 
 # Create a server instance
-resource "stackit_server" "boot-from-volume" {
+resource "stackit_server" "boot-from-image" {
   project_id = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
   name       = "example-server"
   boot_volume = {
@@ -64,7 +66,7 @@ resource "stackit_server" "boot-from-volume" {
 # Attach the network interface to the server
 resource "stackit_server_network_interface_attach" "nic-attachment" {
   project_id           = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
-  server_id            = stackit_server.boot-from-volume.server_id
+  server_id            = stackit_server.boot-from-image.server_id
   network_interface_id = stackit_network_interface.nic.network_interface_id
 }
 
@@ -78,7 +80,7 @@ resource "stackit_loadbalancer" "example" {
       target_port = 80
       targets = [
         {
-          display_name = "example-target"
+          display_name = stackit_server.boot-from-image.name
           ip           = stackit_network_interface.nic.ipv4
         }
       ]
@@ -127,10 +129,11 @@ resource "stackit_loadbalancer" "example" {
 
 - `external_address` (String) External Load Balancer IP address where this Load Balancer is exposed.
 - `options` (Attributes) Defines any optional functionality you want to have enabled on your load balancer. (see [below for nested schema](#nestedatt--options))
+- `region` (String) The resource region. If not defined, the provider region is used.
 
 ### Read-Only
 
-- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","`name`".
+- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","region","`name`".
 - `private_address` (String) Transient private Load Balancer IP address. It can change any time.
 
 <a id="nestedatt--listeners"></a>

docs/resources/loadbalancer_credential.md

@@ -1,40 +0,0 @@
----
-# generated by https://github.com/hashicorp/terraform-plugin-docs
-page_title: "stackit_loadbalancer_credential Resource - stackit"
-subcategory: ""
-description: |-
-  Load balancer credential resource schema. Must have a region specified in the provider configuration.
-  !> The stackit_loadbalancer_credential resource has been deprecated and will be removed after November 13th 2024. Please use stackit_loadbalancer_observability_credential instead, which offers the exact same functionality.
----
-
-# stackit_loadbalancer_credential (Resource)
-
-Load balancer credential resource schema. Must have a `region` specified in the provider configuration.
-
-!> The `stackit_loadbalancer_credential` resource has been deprecated and will be removed after November 13th 2024. Please use `stackit_loadbalancer_observability_credential` instead, which offers the exact same functionality.
-
-## Example Usage
-
-```terraform
-resource "stackit_loadbalancer_credential" "example" {
-  project_id   = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
-  display_name = "example-credentials"
-  username     = "example-user"
-  password     = "example-password"
-}
-```
-
-<!-- schema generated by tfplugindocs -->
-## Schema
-
-### Required
-
-- `display_name` (String) Credential name.
-- `password` (String) The password used for the ARGUS instance.
-- `project_id` (String) STACKIT project ID to which the load balancer credential is associated.
-- `username` (String) The username used for the ARGUS instance.
-
-### Read-Only
-
-- `credentials_ref` (String) The credentials reference can be used for observability of the Load Balancer.
-- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","`credentials_ref`".

docs/resources/loadbalancer_observability_credential.md

@@ -31,7 +31,11 @@ resource "stackit_loadbalancer_observability_credential" "example" {
 - `project_id` (String) STACKIT project ID to which the load balancer observability credential is associated.
 - `username` (String) The password for the observability service (e.g. Argus) where the logs/metrics will be pushed into.
 
+### Optional
+
+- `region` (String) The resource region. If not defined, the provider region is used.
+
 ### Read-Only
 
 - `credentials_ref` (String) The credentials reference is used by the Load Balancer to define which credentials it will use.
-- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","`credentials_ref`".
+- `id` (String) Terraform's internal resource ID. It is structured as "`project_id`","region","`credentials_ref`".