Terraform cant access attributes on a list of objects.

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Terraform provides a greater ability to define Infrastructure as Code IaC through its support of Expressions. Expressions are lines of code that define configuration and attributes on resources in the Terraform HCL code as the Terraform code is executed with the terraform plan command. This enables a rich ability to dynamically configure resources based on passed input variables to the Terraform Project , or even via looking up other resources managed by the same Terraform Project. There is a huge variety to the different code expressions that can be written in Terraform to suit the requirements of different Infrastructure as Code projects. Terraform expressions support many built-in functions to help writing the expression code needed for a solutions infrastructure definition. When using a Terraform list type to define an Array of value or objects, it may be necessary at times to lookup those values programmatically.

Terraform cant access attributes on a list of objects.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. I have used this datasource to gather data from the cluster and was encountering an error related to this datasource:. I have found that this is not specified in the documentation, but to access the properties of the data object, it is necessary to specify that it is within a list. I believe it is necessary to modify the examples in the documentation to reflect this. The text was updated successfully, but these errors were encountered:. Sorry, something went wrong. I took a quick look over the data source's code, and it doesn't appear that this data source returns a list of EKS clusters. Can you supply a sample Terraform configuration where this occurs so that we can take a look over that and try to reproduce? Based on the documentation and schema, I would not expect this resource to return a list of EKS cluster resources; in fact, since the lookup is done by name , it should be impossible for more than one cluster to be returned.

The previous examples show how to use the index function to look up and retrieve elements from a list by their value, including by the value of an attribute on objects within a list. You signed out in another tab or window.

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. After some digging I found that the above PR appeared to change what types of elements could be accessed from lists, however, there was no reference in the PR or the changelog about the change in the element function or it appears any of the functions that take a list type only working with flat lists.

Terraform cant access attributes on a list of objects.

Terraform is a powerful tool for managing infrastructure, but it can sometimes be tricky to get the hang of. One common problem that Terraform users encounter is not being able to access attributes on a list of objects. Terraform is a tool for building, changing, and versioning infrastructure.

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Related Articles. Sorry, something went wrong. To find out more about our cookie policy, see here: Privacy Policy. I took a quick look over the data source's code, and it doesn't appear that this data source returns a list of EKS clusters. After some digging I found that the above PR appeared to change what types of elements could be accessed from lists, however, there was no reference in the PR or the changelog about the change in the element function or it appears any of the functions that take a list type only working with flat lists. Let me know if you have any further questions. Have a question about this project? References No response Would you like to implement a fix? Sign in to your account. Labels bug core. I have found that this is not specified in the documentation, but to access the properties of the data object, it is necessary to specify that it is within a list. The following is an example usage of the index function to find the index of a value in a simple list of numbers:.

Terraform provides a greater ability to define Infrastructure as Code IaC through its support of Expressions. Expressions are lines of code that define configuration and attributes on resources in the Terraform HCL code as the Terraform code is executed with the terraform plan command. This enables a rich ability to dynamically configure resources based on passed input variables to the Terraform Project , or even via looking up other resources managed by the same Terraform Project.

He has a passion for technology and sharing what he learns with others to help enable them to learn faster and be more productive. Can you supply a sample Terraform configuration where this occurs so that we can take a look over that and try to reproduce? You signed in with another tab or window. Copy link. Thank you! The function accepts an argument that is a reference to the list to search, and an argument that is the value to lookup the index for within the list. I think a separate issue tracking the specific case of indexing computed lists would be a good idea, since this is legitimately a separate concern from what was originally described in this bug that element was only able to return strings. References No response Would you like to implement a fix? Dismiss alert. The text was updated successfully, but these errors were encountered:. Reload to refresh your session. Skip to content.