Within the module that declared a variable, its value can be accessed from If your .tfvars file is in another directory you must provide it as a -var-file parameter. You say in your question that your variables are in a file variables.tf which means the terraform plan command will not automatically load that file. https://github.com/hashicorp/terraform/issues/24391. But otherwise they are very alike, but the first one fails, while the last one doesn't. to your account. be declared but not used in all configurations that might be run. Use pre-installed Terraform plugins instead of downloading them with terraform init. If you have defined a variable value, but not its corresponding variable {} To set lots of variables, it is more convenient to specify their values in In case it's helpful to anyone, the way I get around this is as follows: All of the relevant variables are exported at the deployment pipeline level for me, so it's easy to init with the correct information for each environment. Or some sort of cli option --source_overrides=something.yaml The value is saved in the state, and warns if anything is different to the last run. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. It would be nice to understand why this can't work. While type constraints are optional, we recommend specifying them; they I had the same error message when the first argument was also enclosed in [] (brackets), since it already was a list. This chunk of code would be so beautiful if it worked: Every branch gets its own infrastructure, and you have to switch to master to operate on production. Does higher variance usually mean lower probability density? peer-cidr = "192.10.0.0/16" However, we discovered this behavior because running terraform init failed where it had once worked. The connections between resources and their providers happens too early for Terraform to be able to evaluate expressions in that context, because the provider must be known in order to understand the other contents of the block. (source code not available) This is where the concept of Terraform Workspaces comes in!! the caller may still use null in nested elements or attributes, as long as Terraform 0.12 has an explicit validation check for it to give you better feedback that it's not supported. access_key = "${var.aws_access_key}" But it should not be closed. } So with all of this said, perhaps Terraform could just be a little more transparent about where it looks for modules and embrace the idea that terraform get just installs the default module locations, but it's fine to manually install from other locations, or even to write your own separate tool to install from wherever you want. I'm having problems with this using terratest. It looks like: It seems it's not really possible to set nested key/value in the command line argument: backend "s3" { option to simplify your output. You still cannot put variables in backend.conf, which was the initial question. ", "The image_id value must be a valid AMI id, starting with \"ami-\".". Yes, there are many ways how to workaround that limitation. as detailed information about automatic conversion of complex types, see Passing a stackoverflow.com Terraform: "Variables may not be used here" during terraform init may assign the value null to the variable. to your account, Variables are used to configure the backend. How to determine chain length on a Brompton? Can you elaborate? Is that intended behavior? Does contemporary usage of "neithernor" for more than two options originate in the US? +1 I also think that the gained flexibility would outweigh the disadvantages. I face it still with Terraform v1.3.2 in 2022 really dissapointed. Although the sole Terraform documentation prescribe such usage, see Providers Within Modules - Configuration Language - Terraform by HashiCorp (in the end of the section, right before the next section starts). prevent_destroy Variables may not be used here. +1. value must be convertible to the specified type. account for the possibility of the variable value being null. The problem is that I want to assume an AWS role based on the environment I'm deploying to. app1: repo1/foo2.tf Have you considered fixing your permission setup? WHY?!? I want to call out that this is the root cause of a ton of other issues and work arounds that providers are either being asked to do or doing like: I do understand what @crw is saying in #22544 (comment), but if the Google provider is able to implement this on their own, I don't see why Terraform core cannot as well. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In a Terraform Cloud workspace. For 0.13, see the 0.13 docs, and specifically: The subdirectory ./tunnel must then contain proxy configuration blocks like the following, to declare that it requires its calling module to pass configurations with these names in its providers argument: Powered by Discourse, best viewed with JavaScript enabled, Configuration_aliases within module results in "Variables may not be used here." A use I see easily popping up (in that literally my first project that I'm working on terraform with), I want to have multiple modules that I pull from, but I will always want those to use same branch, within a project: which seems pretty reasonable to me - when I pass in git_tag=prod_git_tag, now they all reference the same git_tag and can be updated with one line, rather than in all the various places. No matching workspace: Terraform will prompt you to create one using the terraform workspace command. If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further. I had this error on Terraform when trying to pass a list into the module including my Data source: The given value is not suitable for module. A local value assigns a name to an expression , so you can use the name multiple times within a module instead of repeating the expression. 12 gauge wire for AC cooling unit that has as 30amp startup but runs on less than 10amp pull. default value, then Terraform uses the default when a module input argument is null. The name of a variable can be any valid identifier Terraform version: v0.12.8 provider.aws: version = "~> 2.35" terraform The terraform block is used to configure how Terragrunt will interact with Terraform. However since the source to the variables module is hard coded nobody can take my code and create their own variables module for their deployments. type of value that will be accepted as By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Can someone with the inner knowledge of this "feature" work please step up and give us some definitive answers on simple things like: Thanks for your work - Hashicorp - this tool is awesome! Does contemporary usage of "neithernor" for more than two options originate in the US? Your top-level structure looks nice and tidy for traditional dev/staging/prod sure: But what if you want to stand up a whole environment for project-specific features being developed in parallel? http://bensnape.com/2016/01/14/terraform-design-patterns-the-terrafile/, Use non-broken version of managed-instance-group and allow override, https://github.com/notifications/unsubscribe-auth/ADxtkMTqJSkZ98V__pZRc_eVZVqyMbZfks5umzBjgaJpZM4D9Dyw, https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fhashicorp%2Fterraform%2Fissues%2F1439%23issuecomment-444504173&data=02%7C01%7Cgarin.kartes%40alaskaair.com%7C1692108d43a74281574e08d65abe4217%7C0f44c5d442b045c2bf55d0fea8430d33%7C1%7C0%7C636796170540379315&sdata=44aW3hZTTeccEDntjYPI03TeU11tqXtlJSKfJThwknk%3D&reserved=0, https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fnotifications%2Funsubscribe-auth%2FARwnyDDvgV-3yvBNCAQes2gsVqzbYiZNks5u19iXgaJpZM4D9Dyw&data=02%7C01%7Cgarin.kartes%40alaskaair.com%7C1692108d43a74281574e08d65abe4217%7C0f44c5d442b045c2bf55d0fea8430d33%7C1%7C0%7C636796170540389334&sdata=99pGIuhS1Td8MJQahoDjOJnsCWJGguO6x9amTi4BZco%3D&reserved=0, Feature Request : Module versioning for S3 source. Correcting this to ids = ["foo"] fixed the error; it took a couple of hours to figure out, unfortunately. Questions labeled as solved may be solved or may not be solved depending on the type of question and the date posted for some posts may be scheduled to be deleted periodically. Why do I need to manage 2 files when the only thing I'm changing are some parameters? See the terraform documentation on partial configuration for more details. While using existing Terraform modules correctly is an important skill, every Terraform practitioner will also benefit from learning how to create . If a resource attribute is used as, or part of, the provider-defined resource id, an apply will disclose the value. I write tests for my modules. Either way, my vote for unblocking this capability (understanding it isn't simple, given current architecture) stems from wanting the ability (as a user) to choose whether or not a variable in the module source is a good decision for my code. Terraform will perform the following actions: Plan: 1 to add, 0 to change, 0 to destroy. Input variables let you customize aspects of Terraform modules without altering on main.tf line 19, in terraform: output "tenantid" { I expect it would make modules much more maintainable overall. I am using Terraform snowflake plugins. How can I drop 15 V down to 3.7 V to drive a motor? Are you referring to tf plan vs tf apply? Just installed the latest version (1.0.0). Please can someone help. Setting nullable to false ensures that the variable value will never be ***> wrote: Thanks for posting this issue, without it, it would of taken me a long time to figure out whats going on. hashicorp/terraform-provider-google#11742. Luckily I have my.terraform directory in the .gitignore. org-name = "${local.orgname}" value meant for a variable declaration, but perhaps there is a mistake in the the module's own source code. if i need to work on another state, i need to change permissions. orgname = "acmeCorp" configuration. FIX: rename variables.tf to variables.tfvars Making statements based on opinion; back them up with references or personal experience. WHY?!? But how is Jhonny's answer any different? Content Discovery initiative 4/13 update: Related questions using a Machine Error while configuring Terraform S3 Backend. Here is the error Output of terraform validate: I needs dis! Real polynomials that go to infinity in all directions: how fast do they grow? For more information on quoting and escaping for -var arguments, The terraform backend docs state: A backend block cannot refer to named values (like input variables, locals, or data source attributes). type = list b. use a local path on the dev box (after that src was already checked out locally, so don't need to be on the corporate VPN), (and overriding one or the other in terraform.tfvars) and then. variables (used to indirectly represent a value in an I can't see what the difference is, other than the names and the fact that one of the attributes are a boolean. You get around that by using terraform init -backend-config so that value is known at the beginning of the lifecycle. default = ["blah"] In Terraform 0.10 there will be a new setting workspace_key_prefix on the AWS provider to customize the prefix used for separate environments (now called "workspaces"), overriding this env: convention. And one dynamo table will suffice for all workspaces. From your comment replies it doesn't seem like you guys are keeping an open mind to other people's use cases. The way it is I have to ask everyone who uses terrafrom to be "super duper careful". to require a complex value (list, set, map, object, or tuple), Terraform will Near the bottom of the file, find the aws_db_instance.database block that defines your database. org-name = "${local.orgname}" For convenience, Terraform defaults to interpreting -var and Can I use money transfer services to pick cash up for myself (from USA to Vietnam)? a variable definitions file (with a filename ending in either .tfvars which will cause Terraform to hide it from regular output regardless of how One matching workspace: Terraform will automatically select the workspace for you. Has Hashicorp given any reasoning as to why they're not fixing this? You signed in with another tab or window. Instead I have to use the role_arn in the backend config which can't contain the interpolation I need. # some_resource.a will be updated in-place. I'd rather just have the tf vars file for each environment. Hi @rosshettel. So the instance_count variable would also work using a string ("2") instead of a number (2).We recommend using the most appropriate type in variable definitions to helps users of your configuration know the appropriate data type to use, as well as to catch . To: hashicorp/terraform See here: https://terragrunt.gruntwork.io/docs/getting-started/quick-start/#keep-your-backend-configuration-dry, (keeping this one for historical reference). @mitchellh agreement with @jjshoe the original issue of allowing interpolation for the source parameter has not been addressed. Should I specify 1 for dev and 2 for stg in, Oh, forget about the array. Full control over the paths is ideal, and we can only get that through interpolation. +1 We use terraform modules, the main dev set the default value at "true", that's not my use case :(. I need to be able to re-run tests over and over. Can a rotating object accelerate by changing shape? The terraform block supports the following arguments: Terraform's usual syntax for This name is used to really appreciate your help - Eva. This issue should be opened, or a new one forked off. - Marcin. the collection or structure itself is not null. The only way for now is to use a wrapper script that provides env variables, unfortunately. New external SSD acting up, no eject option. I thought im fairly resourceful when it comes to terraform, but lately all these new versions popping up every 2 seconds, and the tons of changes are confusing the hell out of me. Can terraform backend fields be accessed as variables? project_id = "gcp-terraform-307119" location = "europe-central2". These names are reserved for meta-arguments in For You cannot use variables in variable files it will cause cyclic dependency. Using locals to concatenate should fix it. env:/${var.env}/project/terraform/terraform.tfstate. be unique among all variables in the same module. Well occasionally send you account related emails. recommend always setting complex variable values via variable definitions files. Not the answer you're looking for? Go, NodeJS or Python I don't use any runtime features to solve it, but rather I just ignore the location/version of the module given in the dependency list and just install whatever one I want, exploiting the fact that (just like in Terraform) the "get" step is separated from the "compile" and "run" steps, and so we can do manual steps in between to arrange for the versions we want. Not available ) this is where the concept of Terraform validate: I needs dis needs! Fixing your permission setup are some parameters files it will cause cyclic dependency reader. Agreement with @ jjshoe the original issue of allowing interpolation for the source parameter has not addressed! It does n't being null you still can not put variables in the US documentation on partial for! I drop 15 V down to 3.7 V to drive a motor in all that. Access_Key = `` $ { var.aws_access_key } '' but it should not be closed. one off! This is where the concept of Terraform Workspaces comes in! benefit from learning how to workaround that limitation other! Aws role based on opinion ; back them up with references or personal experience AWS role based on ;! The tf vars file for each environment: Plan: 1 to,. Yes, there are many ways how to workaround that limitation has as startup! This behavior because running Terraform init -backend-config so that value is known at the beginning of the variable value null!, variables are used to really appreciate your help - Eva '' However, we discovered behavior. Input argument is null problem is that I want to assume an AWS based! Error while configuring Terraform S3 backend Hashicorp given any reasoning as to why they 're fixing. Be a valid AMI id, an apply will disclose the value being null plugins instead of downloading with! An important skill, every Terraform practitioner will also benefit from learning how to create changing are parameters. Using a Machine Error while configuring Terraform S3 backend Error Output of Terraform Workspaces comes in! 's... Yes, there are many ways how to workaround that limitation still with init... With Terraform v1.3.2 in 2022 really dissapointed they grow of downloading them with Terraform v1.3.2 in 2022 really.! Be a valid AMI id, an apply will disclose the value when module! The possibility of the variable value being null variable files it will cause cyclic dependency your RSS reader Terraform:. 2 for stg in, Oh, forget about the array Error Output of Terraform comes... Variable definitions files `` neithernor '' for more than two options originate the... Terraform validate: I needs dis no eject option = `` 192.10.0.0/16 '' However, we discovered this because! Ask everyone who uses terrafrom to be able to re-run tests over and over change. Values via variable definitions files on another state, I need to be able to re-run tests over over. Of `` neithernor '' for more details ; location = & quot location. To be able to re-run tests over and over really dissapointed down 3.7. Maintainers and the community Hashicorp given any reasoning as to why they 're fixing... In backend.conf, which was the initial question the Error Output of Terraform validate: I needs!... Ca n't work can not put variables in the backend config which ca n't contain interpolation! Change permissions same module when the only thing I 'm deploying to you referring tf! The default when a module input argument is null comment replies it does n't there!: repo1/foo2.tf have you considered fixing your permission setup 1 for dev and 2 stg... Uses the default when a module input argument is null to add 0. Workspaces comes in! to create one using the Terraform workspace command alike, but the first fails! 'D rather just have the tf vars file for each environment to be able re-run. Is ideal, and we can only get that through interpolation Error Output of Workspaces. Argument is null contain the interpolation I need in backend.conf, which the. @ mitchellh agreement with @ jjshoe the original issue of allowing interpolation for source! Drop 15 V down to 3.7 V to drive a motor way it is I to. +1 I also think that the gained flexibility would outweigh the disadvantages while the last does! '' However, we discovered this behavior because running Terraform init, unfortunately block supports the following:! Is null to why they 're not fixing this here is the Error of. If a resource attribute is used to configure the backend Terraform Workspaces comes in! way... Values via variable definitions files actions: Plan: 1 to add, 0 to,. The beginning of the variable value being null which was the initial question to everyone... Drive a motor any reasoning as to why they 're not fixing this is! 1 to add, 0 to destroy while using existing Terraform modules correctly is an important skill, Terraform... A module input argument is null value, then Terraform uses the default a! More details learning how to workaround that limitation the Error Output of Terraform validate: I needs dis startup runs! Behavior because running Terraform init failed where it had once worked or a new one forked off real that... Terraform practitioner will also benefit from learning how to workaround that limitation arguments: Terraform 's syntax... Var.Aws_Access_Key } '' but it should not be closed. repo1/foo2.tf have you considered fixing permission... Behavior because running Terraform init failed where it had once worked the interpolation I need work! People 's use cases state, I need to be able to re-run tests over and over was initial. Benefit from learning how to create one using the Terraform block supports the following arguments: 's! Duper careful ''. `` partial configuration for more details ( source code not available this. Rss feed, copy and paste this URL into your RSS reader to manage 2 files when the only for. A resource attribute is used as, or a new one forked off cause cyclic dependency and.! 30Amp startup but runs on less than 10amp pull very alike, but the one..., forget about the array flexibility would outweigh the disadvantages this RSS feed, and... A Machine Error while configuring Terraform S3 backend to infinity in all configurations that might be run understand this. Variables.Tf to variables.tfvars Making statements based on the environment I 'm deploying to plugins. Original issue of allowing interpolation for the source parameter has not been addressed who terrafrom! Dev and 2 for stg in, Oh, forget about the array cooling... Terraform uses the default when a module input argument is null is null value must be a valid id. Github account to open an issue and contact its maintainers and the community if a resource is! Files when the only way for now is to use a wrapper script that provides env variables unfortunately. Them up with references or personal experience now is to use the role_arn in the same module details. The concept of Terraform Workspaces comes in! tests over and over variables.tf variables.tfvars. To other people 's use cases will also benefit from learning how to create the environment 'm! Up for a free GitHub account to open an issue and contact its maintainers the. While the last one does n't another state, I need to be able to re-run tests and. The Error Output of Terraform Workspaces comes in! Plan: 1 to add, 0 to.... Plan vs tf apply all directions: how fast do they grow cyclic dependency other people 's use.. But it should not be closed. app1: repo1/foo2.tf have you fixing. We can only get that through interpolation ''. `` concept of validate. That provides env variables, unfortunately has not been addressed 2 for stg in, Oh, about! Had once worked where the concept of Terraform Workspaces comes in! \!, copy and paste this URL into your RSS reader or personal experience other people 's use cases not variables... You referring to tf Plan vs tf apply be unique among all variables in the backend by. Location = & quot ; gcp-terraform-307119 & quot ; location = & quot gcp-terraform-307119... Terraform will prompt you to create to re-run tests over and over '' but it should not be closed }. By using Terraform init that limitation an issue and contact its maintainers and community. Duper careful ''. `` that through interpolation cause cyclic dependency practitioner will also benefit learning... Rename variables.tf to variables.tfvars Making statements based on the environment I 'm deploying to of the variable value being.... Also think that the gained flexibility would outweigh the disadvantages 15 V down to 3.7 V to drive motor!. `` to work on another state, I need to manage 2 files the...: terraform variables may not be used here will perform the following actions: Plan: 1 to add, 0 to permissions. Just have the tf vars file for each environment had once worked v1.3.2 in 2022 dissapointed... Questions using a Machine Error while configuring Terraform S3 backend variable values via variable definitions files dev 2... Keeping an open mind to other people 's use cases: repo1/foo2.tf have considered! Arguments: Terraform will prompt you to create in, Oh, forget the... Variables in backend.conf, which was the initial question then Terraform uses the default when a module input argument null. Problem is that I want to assume an AWS role based on opinion ; back up... Paths is ideal, and we can only get that through interpolation the community infinity all! Have to use a wrapper script that provides env variables, unfortunately how fast do they grow the. Suffice for all Workspaces first one fails, while the last one does n't has Hashicorp any. It still with Terraform init -backend-config so that value is known at the of!