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fix(edge): optimize download + var network #64

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mauritz.uphoff merged 1 commit from fix/example-stec into main

2026-08-20 06:59:19 +00:00

marc.adrian commented

2026-08-20 06:45:04 +00:00

Owner

Hi @mauritz.uphoff ,

as #62 is already merged: My suggestions: Download optimization + variable for networjk.

Hi @mauritz.uphoff , as [#62](https://professional-service.git.onstackit.cloud/professional-service-best-practices/professional-service/pulls/62) is already merged: My suggestions: Download optimization + variable for networjk.

mauritz.uphoff was assigned by marc.adrian

2026-08-20 06:45:04 +00:00

marc.adrian added 1 commit

2026-08-20 06:45:04 +00:00

fix(edge): optimize download + var network

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a60b9f1694

forgejo-actions commented

2026-08-20 06:46:43 +00:00

🤖 AI PR Review

a60b9f16 · STACKIT Model Serving & STACKIT Cloud Advisor

⚠️ 📝 Spelling & Grammar

🤖 STACKIT Model Serving

✅ No spelling or grammar issues found.

🔍 STACKIT Cloud Advisor

Terminology & Product Naming Review

I have reviewed the provided git diff against the official STACKIT documentation regarding networking terminology and product naming conventions. My focus was to ensure that the prose content (descriptions and comments) aligns with the established STACKIT nomenclature for STACKIT Network Area (SNA), Virtual Networks, and Security Groups.

Findings

The review of the prose content in the diff yielded the following results:

SNA Terminology: The use of "SNA network range" in 020-variables.tf is consistent with the concept of defining address ranges from the STACKIT Network Area Concepts Concepts.
Product Naming: All references to STACKIT and its networking components follow the standard naming conventions found in the technical documentation Architecture Concepts.
Technical Accuracy: The description of the IPv4 prefix being a subnet of the SNA network range is architecturally sound according to the SNA implementation details Concepts Faq.

No spelling or grammar issues found.

⚠️ 🏗️ Infrastructure Changes

🤖 STACKIT Model Serving

Added new variable network_ipv4_prefix with validation for valid IPv4 CIDR format.
Updated stackit_network resource to use var.network_ipv4_prefix instead of hardcoded "10.0.10.0/24".

No destructive changes detected.

🔍 STACKIT Cloud Advisor

2. STACKIT SKE and Network Best Practices, Quotas, and Constraints

The proposed change introduces a variable for the network_ipv4_prefix to replace a hardcoded value in the stackit_network resource. While this improves the flexibility of the Terraform module, several architectural considerations regarding SKE and Core Networking must be addressed to ensure production readiness.

SKE & Network Best Practices

When moving from hardcoded values to variables, you must ensure the input adheres to the specific requirements of the STACKIT environment.

SNA vs. Public Project Logic:
The diff does not specify if this cluster is intended for a Public Project or a STACKIT Network Area (SNA).
- If this is an SNA project, the network_ipv4_prefix must be a subnet of the existing SNA network range to allow private connectivity between projects Networking.
- If this is a Public project, SKE typically handles much of the infrastructure (network, subnet, router) automatically Networking. Manual overrides via Terraform should be validated against the intended project type.
IP Address Planning (CIDR Sizing):
The default value provided is 10.0.10.0/24. While sufficient for small clusters, you must plan for the following IP consumption per resource to avoid exhaustion Networking:
- Node/VM: 1 IP per node.
- Load Balancer: 5 IPs per load balancer.
- Router Interface: 1 IP.
Security Group Integration:
The diff modifies the network but does not show the associated Security Groups (SGs). As a best practice, ensure that once this network is provisioned, you apply the Principle of Least Privilege Security In Networks Security In Networks. Avoid using the default security group; instead, create custom SGs with explicit inbound/outbound rules tailored to the SKE workload Security In Networks Security In Networks.

Architectural Topology Considerations

Depending on how you intend to use this network, the placement of your SKE nodes across Availability Zones (AZs) is critical for resilience.

[ Internet / SNA ]
       |
[ STACKIT Router ] <--- (Uses Transfer Range)
       |
[ Virtual Network ] <--- (Uses your network_ipv4_prefix)
       |
  +----+----+
  |         |
[AZ eu01-1] [AZ eu01-2]  <-- SKE Nodes distributed here
  |         |
[  SKE Pods  ]

High Availability: If this network is intended to support a production SKE cluster, ensure your node pools are configured to span multiple AZs (e.g., eu01-1 and eu01-2) Topologies.
Storage Constraint: If your SKE workloads use Persistent Volumes, remember that volumes are bound to a specific AZ. Moving a workload to a different AZ within this network will require a volume migration Topologies.

Quotas and Constraints Summary

Constraint Type	Detail	Impact on this PR
CIDR Validation	Must be a valid IPv4 CIDR .	The added Terraform `validation` block correctly addresses this.
SNA Requirement	Must be a subnet of the SNA range Networking.	Risk: If the user provides a prefix that overlaps or is outside the SNA, inter-project connectivity will fail.
IP Exhaustion	Load balancers require 5 IPs each Networking.	Risk: A `/24` (256 IPs) is generally safe, but very large clusters with many Load Balancers could approach limits.
Private Cluster Limitation	Private clusters (`accessScope: SNA`) cannot use the ACL extension Networking.	If this network is part of an SNA setup for a private cluster, ensure ACLs are not required.

Architect's Recommendation:
The addition of the validation block is a positive step for IaC consistency. However, I recommend adding a secondary documentation note or a more descriptive error message in the validation block that explicitly reminds the user that for SNA projects, the prefix must be a subset of the existing SNA network range to prevent routing failures.

⚠️ 🔒 Security Review

🤖 STACKIT Model Serving

✅ No security issues found.

🔍 STACKIT Cloud Advisor

Security Assessment of Terraform Diff

The provided diff introduces a variable for the network IPv4 prefix and replaces a hard-coded value in the stackit_network resource with this variable. While this improves the flexibility of the Infrastructure as Code (IaC), several security and architectural considerations must be addressed to ensure the SKE (STACKIT Kubernetes Engine) cluster adheres to best practices.

1. STACKIT IAM or Authorization Misconfigurations

No direct IAM changes detected. The diff focuses on networking resources. However, ensure that the identity executing this Terraform plan has the appropriate permissions within the Resource Manager and does not possess "risky combinations" of roles (e.g., combining developer and application user rights) that could lead to unauthorized production changes Security In Networks.

2. Missing STACKIT-Specific Security Controls

🟡 Medium: Network Segmentation & SNA Integration: The variable network_ipv4_prefix is being used to define the cluster network. For a production SKE environment, you should evaluate if this cluster should reside in a Public Project or a STACKIT Network Area (SNA).
- If this is a sensitive workload, moving from a Public project to an SNA project allows for private connectivity and restricts the cluster's exposure Networking.
- Private Cluster Consideration: The diff does not show the accessScope configuration. To secure the Kubernetes control plane, consider setting accessScope: "SNA" to ensure it is only exposed within the SNA rather than the public internet Networking.
🟡 Medium: DNS Security: The diff explicitly sets ipv4_nameservers = ["9.9.9.9", "1.1.1.1"]. While these are public resolvers, in an SNA environment, you may require a publicly resolvable DNS within the SNA to support private cluster functionality Networking.
🟢 Low: Security Group (SG) Definition: The diff defines the network but not the associated Security Groups. Ensure that once the network is provisioned, you implement the Principle of Least Privilege by creating custom SGs that explicitly deny all traffic by default and only allow necessary ports/protocols Security In Networks Security In Networks.

Architectural Comparison: SKE Project Types

Option	Fit	Trade-off
Public Project	Rapid prototyping / Internet-facing services	Control plane is exposed to the public internet by default Networking.
SNA Project	Production / Hybrid Cloud / High Security	Requires pre-configured SNA and network ranges; more complex setup Networking.

Proposed Secure Topology (SNA-based)

[ Organization ]
       |
[ STACKIT Network Area (SNA) ]
       |
       +-- [ SKE Private Cluster ]
       |      |-- [ Nodes (Private IPs) ]
       |      |-- [ Control Plane (SNA-only access) ]
       |
[ Security Groups (Strict Inbound/Outbound Rules) ]

3. Secrets, Credentials, or Sensitive Values

✅ No hard-coded secrets found. The transition from a hard-coded IP string to a Terraform variable is a positive step for configuration management.

4. STACKIT Compliance and Audit-Logging Considerations

🟢 Low: Audit Trail Visibility: Any changes made via this Terraform deployment (e.g., modifying the stackit_network or changing the network_ipv4_prefix) will be automatically recorded in the STACKIT Audit Log Audit Log.
Compliance Note: To maintain a robust audit trail for compliance, ensure that the administrative actions performed by the CI/CD pipeline (the "Initiator") are monitored. The Audit Log will capture the "What, When, Who, and Where" of these infrastructure changes Audit Log.

✅ 📐 Example Consistency

🤖 STACKIT Model Serving

✅ Example follows repository conventions.

🔍 STACKIT Cloud Advisor

STACKIT Provider & Resource Attribute Review

During the review of the iaas-edge-k8s-cluster example, I identified a critical deviation regarding the usage of the stackit_network resource. While the repository conventions for naming and variable structure are largely respected, the implementation of the network configuration uses a deprecated attribute.

1. Deprecated Attribute Usage: `ipv4_prefix`

The diff shows the addition of var.network_ipv4_prefix being assigned to the ipv4_prefix attribute in 040-network.tf.

According to the stackit_network resource schema Network, the ipv4_prefix attribute is marked as Deprecated. For modern STACKIT Terraform implementations, you should transition to using ipv4_prefix_length or ipv4_prefixes to ensure long-term compatibility and alignment with current provider standards.

Architectural Recommendation:
Since the user is providing a CIDR string (e.g., 10.0.10.0/24), the most robust approach is to use the ipv4_prefix_length attribute if only the mask is needed, or ensure the provider logic is updated to handle the specific CIDR via the preferred schema paths. However, based on the documentation, ipv4_prefix is explicitly flagged as deprecated Network Network.

Fix:
To align with the current provider schema and avoid deprecation warnings, use ipv4_prefix_length if the prefix is known, or ensure the network is configured via the non-deprecated fields. If you must pass the full CIDR, verify if your specific provider version supports ipv4_prefixes (plural) for list-based assignment.

# Recommended fix for 040-network.tf using prefix length
resource "stackit_network" "cluster" {
  project_id       = var.stackit_project_id
  name             = "${var.cluster_name}-network"
  # Instead of ipv4_prefix = var.network_ipv4_prefix
  ipv4_prefix_length = 24 
  ipv4_nameservers = ["9.9.9.9", "1.1.1.1"]
  routed           = true
  labels           = local.common_labels
}

2. Summary of Convention Compliance

Convention	Status	Notes
3-digit numeric prefixes	✅ Pass	Files use `020-`, `040-`, etc.
README & MAINTAINERS	⚠️ Partial	`README.md` is updated, but ensure `MAINTAINERS.md` exists in the directory.
Variable Naming & Desc	✅ Pass	`network_ipv4_prefix` uses `snake_case` and includes a `description`.
Provider Constraints	ℹ️ N/A	Not visible in this specific diff.
Lock file presence	ℹ️ N/A	Not visible in this specific diff.
Apache 2.0 Headers	ℹ️ N/A	Not visible in this specific diff.

3. STACKIT Specific Logic Check

The validation logic added to 020-variables.tf is a best practice for STACKIT environments:

validation {
  condition     = can(cidrhost(var.network_ipv4_prefix, 0))
  error_message = "Must be a valid IPv4 CIDR, e.g. 10.0.10.0/24."
}

This correctly ensures that the input string is a valid CIDR before the provider attempts to call the API, preventing unnecessary deployment failures. Note that for SNA (STACKIT Network Area) projects, the provided prefix must be a subset of the range defined in the SNA Create And Manage Virtual Networks.

✅ 📚 Example README

🤖 STACKIT Model Serving

✅ Example READMEs are complete.

🔍 STACKIT Cloud Advisor

Review of `iaas-edge-k8s-cluster` Example

I have reviewed the provided git diff for the iaas-edge-k8s-cluster example. Below is my architectural assessment regarding naming conventions and documentation quality.

1. Naming Convention Analysis

The directory name iaas-edge-k8s-cluster is evaluated as follows:

Accuracy: The name accurately reflects the technical stack being deployed: IaaS (Infrastructure as a Service) resources used to build an Edge Kubernetes Cluster.
Clarity: It clearly distinguishes the use case (Edge computing/K8s) from standard SKE (STACKIT Kubernetes Engine) managed service examples.
Consistency: The naming follows the pattern of using the service category (iaas) followed by the specific implementation/use-case (edge-k8s-cluster), which is consistent with the existing repository structure.

Verdict: ✅ Naming is clear and accurate.

2. README Quality Assessment

The README.md was reviewed based on the changes in the diff:

Service Identification: The README includes a structural overview of the architecture, explicitly mentioning STACKIT Cloud, STEC Management Plane, and IaaS (eu01-1).
Demonstration Scope: It provides a visual representation (via ASCII tree) of the infrastructure components, including the network configuration, server roles (control plane), and the EdgeImage (Talos).
Usage Section: While the diff shows an update to the network description within the README (changing a hardcoded CIDR to a variable reference var.network_ipv4_prefix), the current diff does not show the presence of a dedicated "Usage" section (e.g., instructions for terraform init or terraform apply).

Architect's Note on Documentation Gap:
While the README is descriptive of the architecture, a high-quality example should explicitly guide the user through the execution steps. The diff confirms that variables have been parameterized (e.g., network_ipv4_prefix), which makes the example more professional, but the README should be updated to reflect these new variable inputs to ensure a smooth user experience.

Verdict: ⚠️ README is descriptive but lacks a formal "Usage" section in the provided diff.

Summary Table

Criteria	Status	Observation
Naming	✅ Pass	`iaas-edge-k8s-cluster` is descriptive and follows best practices.
README Quality	⚠️ Warning	Architecture is well-documented, but explicit `terraform` usage instructions are missing from the diff.

⚠️ 💬 Commit Messages

🤖 STACKIT Model Serving

"fix(edge): optimize download + var network" is too vague. Suggest: "fix(edge): optimize download performance and variable network handling for improved reliability"

🔍 STACKIT Cloud Advisor

The provided commit message is sufficiently descriptive and follows a structured format.

Analysis of the Commit Message

The message fix(edge): optimize download + var network is a high-quality commit message for the following reasons:

Scope Identification: It uses the fix(edge) convention, which clearly identifies the specific service or component being modified (edge).
Action-Oriented: It uses a clear imperative verb (optimize) to describe the intent of the change.
Contextual Detail: It specifies exactly what is being optimized (download and var network), providing enough context for a reviewer to understand the impact without needing to immediately inspect the diff.
Standard Compliance: It avoids the "vague" pitfalls mentioned in your criteria (it is not a single word like 'fix' or 'update').

Architect's Verdict

✅ Commit messages are descriptive.

Generated automatically — treat as a hint, not a gate.

## 🤖 AI PR Review > [`a60b9f16`](https://professional-service.git.onstackit.cloud/professional-service-best-practices/professional-service/commit/a60b9f16946d52baba1167f6622c50e99427e4b2) · STACKIT Model Serving & STACKIT Cloud Advisor <details> <summary>⚠️ 📝 Spelling & Grammar</summary> <details> <summary>🤖 STACKIT Model Serving</summary> ✅ No spelling or grammar issues found. </details> <details> <summary>🔍 STACKIT Cloud Advisor</summary> ### Terminology & Product Naming Review I have reviewed the provided git diff against the official STACKIT documentation regarding networking terminology and product naming conventions. My focus was to ensure that the prose content (descriptions and comments) aligns with the established STACKIT nomenclature for **STACKIT Network Area (SNA)**, **Virtual Networks**, and **Security Groups**. #### Findings The review of the prose content in the diff yielded the following results: * **SNA Terminology**: The use of "SNA network range" in `020-variables.tf` is consistent with the concept of defining address ranges from the **STACKIT Network Area** [Concepts](https://docs.stackit.cloud/de/products/network/core-networking/network-area/basics/concepts/) [Concepts](https://docs.stackit.cloud/products/network/core-networking/network-area/basics/concepts/). * **Product Naming**: All references to **STACKIT** and its networking components follow the standard naming conventions found in the technical documentation [Architecture](https://docs.stackit.cloud/products/network/core-networking/basics/architecture/) [Concepts](https://docs.stackit.cloud/products/network/core-networking/basics/concepts/). * **Technical Accuracy**: The description of the IPv4 prefix being a subnet of the SNA network range is architecturally sound according to the SNA implementation details [Concepts](https://docs.stackit.cloud/de/products/network/core-networking/network-area/basics/concepts/) [Faq](https://docs.stackit.cloud/products/network/core-networking/network-area/faq/). **No spelling or grammar issues found.** </details> </details> <details> <summary>⚠️ 🏗️ Infrastructure Changes</summary> <details> <summary>🤖 STACKIT Model Serving</summary> - Added new variable `network_ipv4_prefix` with validation for valid IPv4 CIDR format. - Updated `stackit_network` resource to use `var.network_ipv4_prefix` instead of hardcoded `"10.0.10.0/24"`. No destructive changes detected. </details> <details> <summary>🔍 STACKIT Cloud Advisor</summary> ### 2. STACKIT SKE and Network Best Practices, Quotas, and Constraints The proposed change introduces a variable for the `network_ipv4_prefix` to replace a hardcoded value in the `stackit_network` resource. While this improves the flexibility of the Terraform module, several architectural considerations regarding **SKE** and **Core Networking** must be addressed to ensure production readiness. #### SKE & Network Best Practices When moving from hardcoded values to variables, you must ensure the input adheres to the specific requirements of the STACKIT environment. * **SNA vs. Public Project Logic:** The diff does not specify if this cluster is intended for a **Public Project** or a **STACKIT Network Area (SNA)**. * If this is an **SNA project**, the `network_ipv4_prefix` must be a subnet of the existing SNA network range to allow private connectivity between projects [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). * If this is a **Public project**, SKE typically handles much of the infrastructure (network, subnet, router) automatically [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). Manual overrides via Terraform should be validated against the intended project type. * **IP Address Planning (CIDR Sizing):** The default value provided is `10.0.10.0/24`. While sufficient for small clusters, you must plan for the following IP consumption per resource to avoid exhaustion [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/): * **Node/VM:** 1 IP per node. * **Load Balancer:** 5 IPs per load balancer. * **Router Interface:** 1 IP. * **Security Group Integration:** The diff modifies the network but does not show the associated **Security Groups (SGs)**. As a best practice, ensure that once this network is provisioned, you apply the **Principle of Least Privilege** [Security In Networks](https://docs.stackit.cloud/de/products/security/security-hardening/security-in-networks/) [Security In Networks](https://docs.stackit.cloud/products/security/security-hardening/security-in-networks/). Avoid using the default security group; instead, create custom SGs with explicit inbound/outbound rules tailored to the SKE workload [Security In Networks](https://docs.stackit.cloud/de/products/security/security-hardening/security-in-networks/) [Security In Networks](https://docs.stackit.cloud/products/security/security-hardening/security-in-networks/). #### Architectural Topology Considerations Depending on how you intend to use this network, the placement of your SKE nodes across Availability Zones (AZs) is critical for resilience. ```text [ Internet / SNA ] | [ STACKIT Router ] <--- (Uses Transfer Range) | [ Virtual Network ] <--- (Uses your network_ipv4_prefix) | +----+----+ | | [AZ eu01-1] [AZ eu01-2] <-- SKE Nodes distributed here | | [ SKE Pods ] ``` * **High Availability:** If this network is intended to support a production SKE cluster, ensure your node pools are configured to span multiple AZs (e.g., `eu01-1` and `eu01-2`) [Topologies](https://docs.stackit.cloud/products/runtime/kubernetes-engine/basics/topologies/). * **Storage Constraint:** If your SKE workloads use **Persistent Volumes**, remember that volumes are bound to a specific AZ. Moving a workload to a different AZ within this network will require a volume migration [Topologies](https://docs.stackit.cloud/products/runtime/kubernetes-engine/basics/topologies/). #### Quotas and Constraints Summary | Constraint Type | Detail | Impact on this PR | | :--- | :--- | :--- | | **CIDR Validation** | Must be a valid IPv4 CIDR . | The added Terraform `validation` block correctly addresses this. | | **SNA Requirement** | Must be a subnet of the SNA range [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). | **Risk:** If the user provides a prefix that overlaps or is outside the SNA, inter-project connectivity will fail. | | **IP Exhaustion** | Load balancers require 5 IPs each [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). | **Risk:** A `/24` (256 IPs) is generally safe, but very large clusters with many Load Balancers could approach limits. | | **Private Cluster Limitation** | Private clusters (`accessScope: SNA`) cannot use the ACL extension [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). | If this network is part of an SNA setup for a private cluster, ensure ACLs are not required. | **Architect's Recommendation:** The addition of the `validation` block is a positive step for IaC consistency. However, I recommend adding a secondary documentation note or a more descriptive error message in the `validation` block that explicitly reminds the user that for **SNA projects**, the prefix **must** be a subset of the existing SNA network range to prevent routing failures. </details> </details> <details> <summary>⚠️ 🔒 Security Review</summary> <details> <summary>🤖 STACKIT Model Serving</summary> ✅ No security issues found. </details> <details> <summary>🔍 STACKIT Cloud Advisor</summary> ### Security Assessment of Terraform Diff The provided diff introduces a variable for the network IPv4 prefix and replaces a hard-coded value in the `stackit_network` resource with this variable. While this improves the flexibility of the Infrastructure as Code (IaC), several security and architectural considerations must be addressed to ensure the SKE (STACKIT Kubernetes Engine) cluster adheres to best practices. #### 1. STACKIT IAM or Authorization Misconfigurations * **No direct IAM changes detected.** The diff focuses on networking resources. However, ensure that the identity executing this Terraform plan has the appropriate permissions within the **Resource Manager** and does not possess "risky combinations" of roles (e.g., combining developer and application user rights) that could lead to unauthorized production changes [Security In Networks](https://docs.stackit.cloud/de/products/security/security-hardening/security-in-networks/). #### 2. Missing STACKIT-Specific Security Controls * **🟡 Medium: Network Segmentation & SNA Integration:** The variable `network_ipv4_prefix` is being used to define the cluster network. For a production SKE environment, you should evaluate if this cluster should reside in a **Public Project** or a **STACKIT Network Area (SNA)**. * If this is a sensitive workload, moving from a Public project to an **SNA project** allows for private connectivity and restricts the cluster's exposure [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). * **Private Cluster Consideration:** The diff does not show the `accessScope` configuration. To secure the Kubernetes control plane, consider setting `accessScope: "SNA"` to ensure it is only exposed within the SNA rather than the public internet [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). * **🟡 Medium: DNS Security:** The diff explicitly sets `ipv4_nameservers = ["9.9.9.9", "1.1.1.1"]`. While these are public resolvers, in an **SNA** environment, you may require a publicly resolvable DNS within the SNA to support private cluster functionality [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). * **🟢 Low: Security Group (SG) Definition:** The diff defines the network but not the associated **Security Groups**. Ensure that once the network is provisioned, you implement the **Principle of Least Privilege** by creating custom SGs that explicitly deny all traffic by default and only allow necessary ports/protocols [Security In Networks](https://docs.stackit.cloud/de/products/security/security-hardening/security-in-networks/) [Security In Networks](https://docs.stackit.cloud/products/security/security-hardening/security-in-networks/). **Architectural Comparison: SKE Project Types** | Option | Fit | Trade-off | | :--- | :--- | :--- | | **Public Project** | Rapid prototyping / Internet-facing services | Control plane is exposed to the public internet by default [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). | | **SNA Project** | Production / Hybrid Cloud / High Security | Requires pre-configured SNA and network ranges; more complex setup [Networking](https://docs.stackit.cloud/de/products/runtime/kubernetes-engine/basics/networking/). | **Proposed Secure Topology (SNA-based)** ```text [ Organization ] | [ STACKIT Network Area (SNA) ] | +-- [ SKE Private Cluster ] | |-- [ Nodes (Private IPs) ] | |-- [ Control Plane (SNA-only access) ] | [ Security Groups (Strict Inbound/Outbound Rules) ] ``` #### 3. Secrets, Credentials, or Sensitive Values * **✅ No hard-coded secrets found.** The transition from a hard-coded IP string to a Terraform variable is a positive step for configuration management. #### 4. STACKIT Compliance and Audit-Logging Considerations * **🟢 Low: Audit Trail Visibility:** Any changes made via this Terraform deployment (e.g., modifying the `stackit_network` or changing the `network_ipv4_prefix`) will be automatically recorded in the **STACKIT Audit Log** [Audit Log](https://docs.stackit.cloud/de/platform/audit-log/). * **Compliance Note:** To maintain a robust audit trail for compliance, ensure that the administrative actions performed by the CI/CD pipeline (the "Initiator") are monitored. The Audit Log will capture the "What, When, Who, and Where" of these infrastructure changes [Audit Log](https://docs.stackit.cloud/de/platform/audit-log/). </details> </details> <details> <summary>✅ 📐 Example Consistency</summary> <details> <summary>🤖 STACKIT Model Serving</summary> ✅ Example follows repository conventions. </details> <details> <summary>🔍 STACKIT Cloud Advisor</summary> ### STACKIT Provider & Resource Attribute Review During the review of the `iaas-edge-k8s-cluster` example, I identified a critical deviation regarding the usage of the `stackit_network` resource. While the repository conventions for naming and variable structure are largely respected, the implementation of the network configuration uses a deprecated attribute. #### 1. Deprecated Attribute Usage: `ipv4_prefix` The diff shows the addition of `var.network_ipv4_prefix` being assigned to the `ipv4_prefix` attribute in `040-network.tf`. According to the **stackit_network** resource schema [Network](https://registry.terraform.io/providers/stackitcloud/stackit/latest/docs/resources/network), the `ipv4_prefix` attribute is marked as **Deprecated**. For modern STACKIT Terraform implementations, you should transition to using `ipv4_prefix_length` or `ipv4_prefixes` to ensure long-term compatibility and alignment with current provider standards. **Architectural Recommendation:** Since the user is providing a CIDR string (e.g., `10.0.10.0/24`), the most robust approach is to use the `ipv4_prefix_length` attribute if only the mask is needed, or ensure the provider logic is updated to handle the specific CIDR via the preferred schema paths. However, based on the documentation, `ipv4_prefix` is explicitly flagged as deprecated [Network](https://registry.terraform.io/providers/stackitcloud/stackit/latest/docs/data-sources/network) [Network](https://registry.terraform.io/providers/stackitcloud/stackit/latest/docs/resources/network). **Fix:** To align with the current provider schema and avoid deprecation warnings, use `ipv4_prefix_length` if the prefix is known, or ensure the network is configured via the non-deprecated fields. If you must pass the full CIDR, verify if your specific provider version supports `ipv4_prefixes` (plural) for list-based assignment. ```terraform # Recommended fix for 040-network.tf using prefix length resource "stackit_network" "cluster" { project_id = var.stackit_project_id name = "${var.cluster_name}-network" # Instead of ipv4_prefix = var.network_ipv4_prefix ipv4_prefix_length = 24 ipv4_nameservers = ["9.9.9.9", "1.1.1.1"] routed = true labels = local.common_labels } ``` #### 2. Summary of Convention Compliance | Convention | Status | Notes | | :--- | :--- | :--- | | **3-digit numeric prefixes** | ✅ Pass | Files use `020-`, `040-`, etc. | | **README & MAINTAINERS** | ⚠️ Partial | `README.md` is updated, but ensure `MAINTAINERS.md` exists in the directory. | | **Variable Naming & Desc** | ✅ Pass | `network_ipv4_prefix` uses `snake_case` and includes a `description`. | | **Provider Constraints** | ℹ️ N/A | Not visible in this specific diff. | | **Lock file presence** | ℹ️ N/A | Not visible in this specific diff. | | **Apache 2.0 Headers** | ℹ️ N/A | Not visible in this specific diff. | #### 3. STACKIT Specific Logic Check The validation logic added to `020-variables.tf` is a best practice for STACKIT environments: ```terraform validation { condition = can(cidrhost(var.network_ipv4_prefix, 0)) error_message = "Must be a valid IPv4 CIDR, e.g. 10.0.10.0/24." } ``` This correctly ensures that the input string is a valid CIDR before the provider attempts to call the API, preventing unnecessary deployment failures. Note that for **SNA (STACKIT Network Area)** projects, the provided prefix must be a subset of the range defined in the SNA [Create And Manage Virtual Networks](https://docs.stackit.cloud/de/products/network/core-networking/virtual-network/how-tos/create-and-manage-virtual-networks/). </details> </details> <details> <summary>✅ 📚 Example README</summary> <details> <summary>🤖 STACKIT Model Serving</summary> ✅ Example READMEs are complete. </details> <details> <summary>🔍 STACKIT Cloud Advisor</summary> ### Review of `iaas-edge-k8s-cluster` Example I have reviewed the provided git diff for the `iaas-edge-k8s-cluster` example. Below is my architectural assessment regarding naming conventions and documentation quality. #### 1. Naming Convention Analysis The directory name `iaas-edge-k8s-cluster` is evaluated as follows: * **Accuracy:** The name accurately reflects the technical stack being deployed: **IaaS** (Infrastructure as a Service) resources used to build an **Edge Kubernetes Cluster**. * **Clarity:** It clearly distinguishes the use case (Edge computing/K8s) from standard SKE (STACKIT Kubernetes Engine) managed service examples. * **Consistency:** The naming follows the pattern of using the service category (`iaas`) followed by the specific implementation/use-case (`edge-k8s-cluster`), which is consistent with the existing repository structure. **Verdict:** ✅ **Naming is clear and accurate.** #### 2. README Quality Assessment The `README.md` was reviewed based on the changes in the diff: * **Service Identification:** The README includes a structural overview of the architecture, explicitly mentioning **STACKIT Cloud**, **STEC Management Plane**, and **IaaS (eu01-1)**. * **Demonstration Scope:** It provides a visual representation (via ASCII tree) of the infrastructure components, including the network configuration, server roles (control plane), and the EdgeImage (Talos). * **Usage Section:** While the diff shows an update to the network description within the README (changing a hardcoded CIDR to a variable reference `var.network_ipv4_prefix`), the current diff **does not show the presence of a dedicated "Usage" section** (e.g., instructions for `terraform init` or `terraform apply`). **Architect's Note on Documentation Gap:** While the README is descriptive of the architecture, a high-quality example should explicitly guide the user through the execution steps. The diff confirms that variables have been parameterized (e.g., `network_ipv4_prefix`), which makes the example more professional, but the README should be updated to reflect these new variable inputs to ensure a smooth user experience. **Verdict:** ⚠️ **README is descriptive but lacks a formal "Usage" section in the provided diff.** --- ### Summary Table | Criteria | Status | Observation | | :--- | :--- | :--- | | **Naming** | ✅ Pass | `iaas-edge-k8s-cluster` is descriptive and follows best practices. | | **README Quality** | ⚠️ Warning | Architecture is well-documented, but explicit `terraform` usage instructions are missing from the diff. | </details> </details> <details> <summary>⚠️ 💬 Commit Messages</summary> <details> <summary>🤖 STACKIT Model Serving</summary> - "fix(edge): optimize download + var network" is too vague. Suggest: "fix(edge): optimize download performance and variable network handling for improved reliability" </details> <details> <summary>🔍 STACKIT Cloud Advisor</summary> The provided commit message is sufficiently descriptive and follows a structured format. ### Analysis of the Commit Message The message `fix(edge): optimize download + var network` is a high-quality commit message for the following reasons: * **Scope Identification**: It uses the `fix(edge)` convention, which clearly identifies the specific service or component being modified (**edge**). * **Action-Oriented**: It uses a clear imperative verb (`optimize`) to describe the intent of the change. * **Contextual Detail**: It specifies exactly what is being optimized (`download` and `var network`), providing enough context for a reviewer to understand the impact without needing to immediately inspect the diff. * **Standard Compliance**: It avoids the "vague" pitfalls mentioned in your criteria (it is not a single word like 'fix' or 'update'). ### Architect's Verdict ✅ Commit messages are descriptive. </details> </details> --- _Generated automatically — treat as a hint, not a gate._

mauritz.uphoff merged commit b7071c7495 into main

2026-08-20 06:59:19 +00:00

mauritz.uphoff deleted branch fix/example-stec

2026-08-20 06:59:20 +00:00

mauritz.uphoff referenced this pull request from a commit

2026-08-20 06:59:21 +00:00

fix(edge): optimize download performance and variable network handling for improved reliability

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fix(edge): optimize download + var network #64

🤖 AI PR Review

Terminology & Product Naming Review

Findings

2. STACKIT SKE and Network Best Practices, Quotas, and Constraints

SKE & Network Best Practices

Architectural Topology Considerations

Quotas and Constraints Summary

Security Assessment of Terraform Diff

1. STACKIT IAM or Authorization Misconfigurations

2. Missing STACKIT-Specific Security Controls

3. Secrets, Credentials, or Sensitive Values

4. STACKIT Compliance and Audit-Logging Considerations

STACKIT Provider & Resource Attribute Review

1. Deprecated Attribute Usage: ipv4_prefix

2. Summary of Convention Compliance

3. STACKIT Specific Logic Check

Review of iaas-edge-k8s-cluster Example

1. Naming Convention Analysis

2. README Quality Assessment

Summary Table

Analysis of the Commit Message

Architect's Verdict

1. Deprecated Attribute Usage: `ipv4_prefix`

Review of `iaas-edge-k8s-cluster` Example