Terraform Variable File Details

Oct 13, 2025 by wbrum.org 43 views

Introduction

In this article, we will explore the issue of a peering race condition that occurs when creating a cluster with NetApp volumes and GKE Network Policy enabled. This problem arises due to the concurrent sending of two different peering requests, resulting in Terraform crashing. We will delve into the details of the issue, including the Terraform version, variable file settings, and steps to reproduce the problem.

Terraform Version Details

When creating a cluster with NetApp volumes and GKE Network Policy enabled, a specific version of Terraform is used. The version details are crucial in understanding the behavior of the Terraform code. In this case, the Terraform version is not explicitly mentioned, but it is essential to note that the issue is related to the concurrent sending of peering requests.

Terraform Variable File Details

The Terraform variable file contains essential settings that determine the behavior of the Terraform code. In this case, the variable file settings are as follows:

gke_network_policy = true: This setting enables the GKE Network Policy feature.
storage_type = "ha": This setting specifies the storage type as High Availability (HA).
storage_type_backend = "netapp": This setting specifies the storage backend as NetApp.
netapp_protocols = ["NFSV4"]: This setting specifies the NetApp protocols to be used, which in this case is NFSV4.
netapp_subnet_cidr = "192.168.6.0/24": This setting specifies the NetApp subnet CIDR, which is used to configure the network settings.

Steps to Reproduce

To reproduce the issue, follow these steps:

Enable both NetApp component creation and GKE Network Policy.
Attempt to create a cluster using Terraform.

Expected Behavior

The expected behavior is that the cluster, network, and NetApp components are all created successfully.

Actual Behavior

However, the actual behavior is that Terraform crashes with the following error message:

╷
│ Error: Error creating NetworkPeeringRoutesConfig: googleapi: Error 400: There is a peering operation in progress on the local or peer network. Try again later., badRequest
│ 
│   with module.google_netapp[0].google_compute_network_peering_routes_config.route_updates,
│   on modules/google_netapp/main.tf line 28, in resource "google_compute_network_peering_routes_config" "route_updates":
│   28: resource "google_compute_network_peering_routes_config" "route_updates" {
│

Additional Context

Unfortunately, there is no additional context provided to further explain the issue.

References

There are no references provided to support the information in this article.

Code of Conduct

The author agrees to follow the project's Code of Conduct.

Understanding the Issue

The issue arises due to the concurrent sending of two different peering requests. This results in a peering race condition, which causes Terraform to crash. To resolve this issue, it is essential to understand the underlying cause and implement a solution to prevent the concurrent sending of peering requests.

Solution

To resolve the issue, the following solution can be implemented:

Use a lock mechanism to prevent concurrent sending of peering requests.
Implement a retry mechanism to handle the peering operation in progress error.
Use a more robust Terraform version that can handle concurrent operations.

Conclusion

In conclusion, the peering race condition issue that occurs when creating a cluster with NetApp volumes and GKE Network Policy enabled is a complex problem that requires a thorough understanding of the underlying cause. By implementing a solution to prevent the concurrent sending of peering requests, the issue can be resolved, and Terraform can create the cluster, network, and NetApp components successfully.

Future Work

Future work can include:

Investigating the root cause of the peering race condition issue.
Implementing a more robust solution to prevent concurrent sending of peering requests.
Testing the solution with different Terraform versions and configurations.

Recommendations

Based on the analysis of the issue, the following recommendations can be made:

Use a lock mechanism to prevent concurrent sending of peering requests.
Implement a retry mechanism to handle the peering operation in progress error.
Use a more robust Terraform version that can handle concurrent operations.

Limitations

The analysis of the issue has some limitations, including:

The lack of additional context to further explain the issue.
The use of a specific Terraform version that may not be representative of all Terraform versions.
The implementation of a solution that may not be applicable to all configurations and use cases.

Future Research Directions

Future research directions can include:

Investigating the root cause of the peering race condition issue.
Implementing a more robust solution to prevent concurrent sending of peering requests.
Testing the solution with different Terraform versions and configurations.

Conclusion

Introduction

In our previous article, we explored the issue of a peering race condition that occurs when creating a cluster with NetApp volumes and GKE Network Policy enabled. This problem arises due to the concurrent sending of two different peering requests, resulting in Terraform crashing. In this article, we will provide a Q&A section to further clarify the issue and provide additional information.

Q: What is a peering race condition?

A: A peering race condition occurs when two or more concurrent operations attempt to send peering requests, resulting in a conflict and causing Terraform to crash.

Q: What is the root cause of the peering race condition issue?

A: The root cause of the peering race condition issue is the concurrent sending of two different peering requests. This can occur when Terraform is creating a cluster with NetApp volumes and GKE Network Policy enabled.

Q: How can I prevent the peering race condition issue?

A: To prevent the peering race condition issue, you can use a lock mechanism to prevent concurrent sending of peering requests. You can also implement a retry mechanism to handle the peering operation in progress error.

Q: What is the recommended solution to prevent the peering race condition issue?

A: The recommended solution is to use a lock mechanism to prevent concurrent sending of peering requests. You can also implement a retry mechanism to handle the peering operation in progress error.

Q: Can I use a more robust Terraform version to prevent the peering race condition issue?

A: Yes, you can use a more robust Terraform version that can handle concurrent operations. However, it is essential to note that the issue may still occur if the Terraform version is not compatible with the NetApp volumes and GKE Network Policy configuration.

Q: What are the limitations of the analysis of the issue?

A: The analysis of the issue has some limitations, including:

The lack of additional context to further explain the issue.
The use of a specific Terraform version that may not be representative of all Terraform versions.
The implementation of a solution that may not be applicable to all configurations and use cases.

Q: What are the future research directions for this issue?

A: Future research directions can include:

Investigating the root cause of the peering race condition issue.
Implementing a more robust solution to prevent concurrent sending of peering requests.
Testing the solution with different Terraform versions and configurations.

Q: Can I use a different storage backend to prevent the peering race condition issue?

A: Yes, you can use a different storage backend to prevent the peering race condition issue. However, it is essential to note that the issue may still occur if the storage backend is not compatible with the NetApp volumes and GKE Network Policy configuration.

Q: What are the best practices for preventing the peering race condition issue?

A: The best practices for preventing the peering race condition issue include:

Using a lock mechanism to prevent concurrent sending of peering requests.
Implementing a retry mechanism to handle the peering operation in progress error.
Using a more robust Terraform version that can handle concurrent operations.