Can plants use Light from Aurora Borealis to Photosynthesize? And indeed, if you comment out the variable reference in the snippet above, and replace it with prevent_destroy = false, it works - and if you then change it back _it keeps working_. org-name = "${local.orgname}" Concealing One's Identity from the Public When Purchasing a Home. Name for phenomenon in which attempting to solve a problem locally can seemingly fail because they absorb the problem from elsewhere? So, it implies that you can reuse them later with possible customizations without duplicating the resource blocks each time you require them, which is practical for big projects with complicated designs. While I can understand the reasons for not supporting general var/local inclusion .. This is of course not as convenient as creating everything in one step using directly-referenced modules, but maybe it's a reasonable workaround for some situations in the mean time. It's over 4 years since #3116 was opened, I think we'd all appreciate some indication of where this is? Is Hashcorp looking to resolve this issue? Can you elaborate? I need to be able to re-run tests over and over. See this documentation for more on declaring variables and specifically passing them in via the command line. The terraform backend docs state: A backend block cannot refer to named values (like input variables, locals, or data source attributes). When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. This feature is available in Terraform v1.1.0 and later. Is it possible to make a high-side PNP switch circuit active-low with less than 3 BJTs? Can terraform backend fields be accessed as variables? When you call a module, the source argument is required. 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). @mitchellh elaborating an example to allow the for absolute paths relative to TF-Home. In a nutshell, an external data source as the name(not a great one!) If your .tfvars file is in another directory you must provide it as a -var-file parameter. You can reference any registry module with a source string of <NAMESPACE>/<NAME>/<PROVIDER>. 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. If he wanted control of the company, why didn't Elon Musk buy 51% of Twitter shares instead of 100%? One very specific complexity with this is that currently modules need to be pre-fetched using terraform get prior to terraform plan, and currently that command does not take any arguments that would allow you to set variables.By the time plan is running, Terraform is just thinking about the module name and paying no attention to the module source, since the module is assumed to already be . You could also use a URL or local file path for the source of your modules. It's not pretty but it works, and is hidden away in the module for the most part: Module originated prior to 0.12, so those conditionals could well be shortened using bool now. See here: https://terragrunt.gruntwork.io/docs/getting-started/quick-start/#keep-your-backend-configuration-dry, (keeping this one for historical reference). 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. module "vpc" { I'd rather like to pull all my source definitions to the top of a configuration, in a locals definition, so I don't have to go hunting through every file to find/update the string. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. to your account. Our community has been around for many years and pride ourselves on offering unbiased, critical discussion among people of all different backgrounds. We should add validation that this isn't allowed. By clicking Sign up for GitHub, you agree to our terms of service and The nullable argument in a variable block controls whether the module caller may assign the value null to the variable. peer-cidr = "192.10.0.0/16" Here is the tf files inside module Resource Group folder, to use variable name of RG you can use output in seperate output.tf. See the Terraform documentation for a list of possible module sources. My use case is very much like @weldrake13's. Changing module versions manually is error prone. Does subclassing int to forbid negative integers break Liskov Substitution Principle? Terraform module, which creates almost all supported AWS Lambda resources as well as taking care of building and packaging of required Lambda dependencies for functions and layers. Personally I'd love to see interpolation for the entire source parameter. It would be create if we can use variables in the lifecycle block because without using variables I'm literally unable to use prevent_destroy in combination with a "Destroy-Time Provisioner" in a module. implies tries to get some information from an outside source and present it to Terraform. The same of: https://github.com/hashicorp/terraform/issues/3116 In my code I have a variables module which lives in a git repo and contains all my input variables based on region and environment. What is the rationale of climate activists pouring soup on Van Gogh paintings of sunflowers? Does subclassing int to forbid negative integers break Liskov Substitution Principle? I am using Terraform snowflake plugins. [] only literal values can be used because the processing happens too early for arbitrary expression evaluation. 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. Could be other workarounds but need to know what tools you are using. 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! How to aggregate effects of time series, VAR and linear regression on the same dataset? locals { Thank you, solveforum. Please allow variables derived from static values to be used in lifecycle blocks. var . Now install the module by running terraform get. The need to set lifecycle properties as variables is required in a lot of production environments. https://www.kaggle.com/competitions/walmart-recruiting-store-sales-forecasting/data. For example: Figma considers UI/Button/Active . We use this http://bensnape.com/2016/01/14/terraform-design-patterns-the-terrafile/ I think it would be reasonable to have something like that natively. AWS RDS has a deletion_protection option that is easy to set. The Terraform Registry is the easiest way to get started with Terraform and to find modules. This Terraform module is the part of serverless.tf framework, which aims to simplify all operations when working with the serverless in Terraform: Using locals to concatenate should fix it. Terraform obscures this ability a little by storing the local modules in a directory named after the MD5 hash of the module name under the .terraform directory, so it's harder to recognize which one is which by eye but you can, if you locate the right one, install it from a different source or modify it in-place. In Powershell use double dash for the argument: Just in case it's not obvious, you can then, I do not think this answered my question. In the next steps, you will move your New Relic configurations into a reusable module. Stack Overflow for Teams is moving to its own domain! Terraform output values allow you to export structured data about your resources. However, we discovered this behavior because running terraform init failed where it had once worked. Add support for git tags/branches in module sources, config/module: validate config to load [GH-1439]. A backend block cannot refer to named values (like input variables, locals, or data source attributes). It would be nice to understand why this can't work. Second playbook that creates a firewall and associated rules (firewall.tf), it's state is stored in a remote s3 bucket some-random-string/firewall/terraform.tfstate Now my question. Which finite projective planes can have a symmetric incidence matrix? Cc: Garin Kartes , Comment env = "production" So just use: And switch workspaces as appropriate before deployments. However, we discovered this behavior because running terraform initfailed where it had once worked. The TF engine is not yet running when the values are assigned.. outputs on the other hand are evaluated near the end of a TF life cycle. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Taken straight from the documentation, Terraform provides a common configuration to launch infrastructure from physical and virtual servers to email and DNS providers. How to understand "round up" in this context? Novice to expert-level contributors providing tips for DevOps. 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. For example, you can easily tell TF to create an SSH key that seems fine with tf plan but errors out with tf apply. If we went this route, the only thing that would need to change in Terraform is to switch to a more user-friendly on-disk module representation and to commit not to change it in future versions of Terraform. Steady state heat equation/Laplace's equation special geometry, A planet you can take off from, but never land back, Space - falling faster than light? What is the rationale of climate activists pouring soup on Van Gogh paintings of sunflowers? This is logged as an issue on the official terraform repository here: Not slanting at you, just frustrated that this feature is languishing and I NEED it Now. @Penumbra69 and all the folks on here: I hear you, and the use cases you're describing totally make sense to me. craigtho 7 mo. Successfully merging a pull request may close this issue. Though it's been closed, and split into two cases, which don't address all the reasons for this, it's more commented then any current open issue. Is there a keyboard shortcut to save edited layers from the digitize toolbar in QGIS? Link to terraform plan documentation. (. That's a lot of wet, brittle code that won't stand up to any significant change in the repository structure. Where they are strings, that will generally mean values given in quotes, like bucket = "example". If the variable you are trying to pass in is a map, then it needs to be parse-able as a map. Would be weird. By the time plan is running, Terraform is just thinking about the module name and paying no attention to the module source, since the module is assumed to already be retrieved into the .terraform subdirectory. Changing module versions manually is error prone. Off the top of my head I can think of the following limitations: All of these make writing enterprise-level Terraform code difficult and more dangerous. I see two things that could be causing the error you are seeing. If you're still using Chakra UI v1 check the docs for chakra-react-select v3 here. In the 10 step vpc.tf the first 1 creates the VPC where the firewall.tf is going to be in. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, This does not work, I still receive "variables not allowed here", I think this answer is incomplete as I still get, It should mention that you can't address a local in your tfvars, and should instead replace the variable with a local.something (at that point you could remove the local altogether). Copying of code and replacing of core values is always needed So, which one should you choose? This downloading is done by using the same go-getter library Terraform uses, so the source parameter supports the exact same syntax as the module source parameter, including local file paths, Git URLs, and Git URLs with ref parameters (useful for checking out a specific tag, commit, or branch of Git repo). Our powershell wrapper does so many things to over come terraform restrictions, we cant use terraform without, basically we did something like the guys in terragrunt did, plus many more addons on it, i cant understand how somebody can even use terraform as is out of the box without some interpolation in those missing places.. anyhow, i really hope hashicorp will decide to change some parts of the product, because it is really constricting, some of those things should have been thought of much before. Is it enough to verify the hash to ensure file is virus free? Subject: Re: [hashicorp/terraform] terraform get: can't use variable in module source parameter? 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. Not the answer you're looking for? }, ###################### There's no way for me to delete buckets in a test account and set protection in a production account. To learn more, see our tips on writing great answers. I need to be able to pass variable. bleepcoder.com uses publicly licensed GitHub information to provide developers around the world with solutions to their problems. Specify the name of the outputs for each environment Issues: 1. Question about doing a double slit on two entangled particles. Terraform external data source executes either a shell script or python or for that matter any other program. orgname = "acmeCorp" In addition to file paths, Terraform supports other types of module sources, such as Git URLs, Mercurial URLs, and arbitrary HTTP URLs.. Some things simply cannot be a moving target inside the main terraform phase. of the above use cases could be resolved by adding${path.root} to the list of allowed local module source prefixes. A module is a collection of Terraform files in the same directory, so we can find them by using os.listdir, like so: You can only specify one bucket for all workspaces, but the s3 backend will add the workspace prefix to the path: When using a non-default workspace, the state path will be /workspace_key_prefix/workspace_name/key (see also the workspace_key_prefix configuration). Can you close, please? Terraform modules allow you to reuse, share, and store your Terraform configurations using version control like Github. Thanks! How to extract sensitive output variables in terraform? module "iam" { source = "./s3/customer/${local.orgname}" +1 I also think that the gained flexibility would outweigh the disadvantages. Is there an industry-specific reason that many characters in martial arts anime announce the name of their attacks? Is there a general issue open with Terraform to improve conditional support? I've got a variable declared in my variables.tf like this: This error can also occurs when trying to setup a variable's value from a dynamic resource (e.g: an output from a child module): Using locals block instead of the variable will solve this issue: I had the same error, but in my case I forgot to enclose variable values inside quotes (" ") in my terraform.tfvars file. Variables may not be used here. This is a variable definitions file where we can define values for any input variables. Which finite projective planes can have a symmetric incidence matrix? Thus the engine is running and interpolation is supported.. Another way to to this is use a null object and apply the value = "${var.nickname != "" ? Terraform outputs 'Error: Variables not allowed' when doing a plan, https://github.com/hashicorp/terraform/issues/24391, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. Seeing "The filename or extension is too long" when "terragrunt plan" is executed in Windows, Terraform unable to find azurerm backend storage during init, Covariant derivative vs Ordinary derivative. However, the s3 backend docs show you how you can partition some s3 storage based on the current workspace, so each workspace gets its own independent state file. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. For a full list of module meta-arguments, refer to the module documentation. +1 on this. providers = { Swing and a miss on this one. If your .tfvars file is in another directory you must provide it as a -var-file parameter. Terraform modules help us group different infrastructure resources into just one unified resource. rev2022.11.7.43014. But it should not be closed. If this gets closed then those following cant view the issue. Please vote for the answer that helped you in order to help others find out which is the most helpful answer. Terraform uses the output of the program like any other data source. Should I specify 1 for dev and 2 for stg in, Oh, forget about the array. Is this meat that I was told was brisket in Barcelona the same as U.S. brisket? I'm trying to avoid hard-coding module sources; the simplest approach would be: The result I get while attempting to run terraform get -update is. Will it have a bad influence on getting a student visa? When running terraform plan, it will automatically load any .tfvars files in the current directory. What is the function of Intel's Total Memory Encryption (TME)? Please vote for the answer that helped you in order to help others find out which is the most helpful answer. i.e. I had something similar , the module was written on version 1.0 and I was using terraform version 0.12. $ terraform get Obviously, quoting the value results in provider configuration not been passed properly into the module Making statements based on opinion; back them up with references or personal experience. I am asking this question WHY? We do not host any of the videos or images on our servers. Do you expect some modules to have the same interface, so you can swap these? All Answers or responses are user generated answers and we do not have proof of its validity or correctness. These can be included in your Terraform plan or in their own file. [Note: Best Practice is to keep all variables in separate vars.tf file in the same directory] vars.tf Terraform States can be defined for each environment folder with no issues 4. If the above doesn't answer your question then it would help if you could share your configuration and say a little more about what you are trying to achieve. And will it, if I do this workaround, keep working? @mitchellh agreement with @jjshoe the original issue of allowing interpolation for the source parameter has not been addressed. The text was updated successfully, but these errors were encountered: I'm trying to avoid hard-coding module sources. providers = { Is it possible to make a high-side PNP switch circuit active-low with less than 3 BJTs? Function calls not allowed on provider.tf line 9, in terraform: 9: bucket = element(local.BUCKET_NAME, 1) Functions may not be called here. What is the use of the low pressure helium lamp in this plasma jet experiment? source = "./vpc/customer/${local.orgname}" Sign in I want admins and automated-ci to be able to specify the local path, allow flexibility to pull from git or filesystem, etc, but this is not possible without allowing interpolation in the source param. app2: ../repo1/foo2.tf 1. region = "us-west-2". 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. Example here is a module for gcloud sql instance, where obviously in production I want to protect it, but more ephemeral environments I want to be able to pull the environment down without editing the code temporarily. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Review root input variables https://github.com/hashicorp/terraform/issues/3116, Get AccountID/OwnerID using IAM Credentials on AWS Provider, [aws][bug] Ambigious error message when trying to delete ebs volume, Variable defaults / declarations cannot use conditionals. I need to test multiple lights that turn on individually using a single switch. JavaScript is disabled. +1 for this. I have a git-based module to configure team permissions, and I have ~80 teams. FIX: rename variables.tf to variables.tfvars. This would let me effectively use modules to run dev & test environments with the same config as prod, while providing deletion protection for prod resources. (clarification of a documentary). Thought I'd offer up a work around I've used in some small cases. The text was updated successfully, but these errors were encountered: 40 MrZablah, jefftucker, mcaulifn, dogmatic69, ryanfelder . ###################### Assume the below directory / file structure. region = "us-westt-1" Find centralized, trusted content and collaborate around the technologies you use most. Why was video, audio and picture compression the poorest when storage space was the costliest? Instead of terraform plan -var 'MyAmi=xxxx' I would expect something more like terraform plan -var 'MyAmi={"us-east-1":"ami-123", "us-east-2":"ami-456"}'. What is the use of NTP server when devices have accurate time? Perhaps in some cases this could be worked around by breaking a configuration into two separate runs, with an initial run creating a remote state that can be consumed by the second run. 503), Mobile app infrastructure being decommissioned, How to concatenate S3 bucket name in Terraform variable and pass it to main tf file. Another example as to why this is beneficial: `####################### Global value ####################### How can I make a script echo something when it is paused? Interactive Input - terraform variables Just don't give default value. +1. The same of: #3116 env = "production" Why are there contradicting price diagrams for the same ETF? Once we can get the variables defined by a single file, we can get all the variables defined in a module. Reply-To: hashicorp/terraform }`, this would be called acmecorp.tf, we would just copy this module and renamed it to loonytoons.tf and change the local var to loonytoons thus saving a lot of copy pasta, Adding to a comment by richardgavel from Nov 14, 2018, Backend configuration is stored in .terraform/terraform.tfstate, so store module sources in there and require re-init if those change, i.e something like module.cluster1.app -> source="github.com/example/example". But how is Jhonny's answer any different? imagine if your C code could arbitrarily download new C files during compile/execution. Already on GitHub? Is it still waiting on the proposal mentioned in this comment, #4149 ? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Seen multiple threads like this. Check the terraform version. Is that intended behavior? Commenting on #3119 was locked almost 2 years ago saying "We'll open it again when we are working on this". The chosen direction to implement support for just the version is very limiting. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Using terragrunt or a terrafile. It also shifts a lot of potential errors away from a compile-time error to a runtime error, which we've wanted to avoid. There is a similar issue in not being able to use interpolation syntax when providing configuration for back ends (say S3 bucket/region). What is the function of Intel's Total Memory Encryption (TME)? First, in your project root, create a new directory to store your modules named modules: bash $ mkdir modules && cd modules These backend configuration arguments expect literal values rather than variables. An example from https://stackoverflow.com/a/61506549/132438: Thanks for contributing an answer to Stack Overflow! All rights belong to their respective owners. My use case is module development, where I want to replace several references to git repos with local checkouts. prevent_destroy cannot support references like that, so if you are not seeing an error then the bug is that the error isn't being shown; the reference will still not be evaluated. solve the current problem with variable initial and boundary conditions, or the current ibcs a little faster or not so demanding in memory; visualize the video similar to that appears in Rob Knapp's blog by. I'm going to keep this tagged with "thinking". We are working every day to make sure solveforum is one of the best. Yes, it was the map var that was causing the problem. In all of the module examples you've seen so far, whenever you used a module, you set the source parameter of the module to a local filepath. Hands-on: Try the Use Modules From the Registry or Build and Use a Local Module tutorials. } To subscribe to this RSS feed, copy and paste this URL into your RSS reader. When running terraform plan, it will automatically load any .tfvars files in the current directory. The registry is integrated directly into Terraform. Error: Variables not allowed on provider.tf line 12, in terraform: 12: dynamodb_table = "data-pf-snowflake-terraform-state-lock-${terraform.workspace}" Variables may not be used here. 503), Mobile app infrastructure being decommissioned, Terraform: module outputs not being recognised as variables, Error while configuring Terraform S3 Backend. Well occasionally send you account related emails. Our modules need to be capable of having lifecycle as variables. (clarification of a documentary). Deployment is 100% automated for us, and if the dev teams need to make a change to a resource, or remove it then that change would have gone through appropriate testing and peer review before being checked into master and deployed. Why should you not leave the inputs of unused gates floating with 74LS series logic? But I got this error. The module installer supports installation from a number of different source types. You still cannot put variables in backend.conf, which was the initial question. Duplicated code 2. Guys the best method to get around it is to wrap your terraform in a script. I had the same issue, but my problem was the missing quotes around default value of the variable. cidr-octs = "10.7" peer-vpc = "vpc-xxxxxxxxxxxxxxxxx" If we cannot have the source set as a variable, could we specify some module-specific config values that would load at runtime? This effectively locks down the infrastructure in the workspace and requires a IAM policy change to re-enable it. Said another way, TF as it is right now gives me a lot of compile time and runtime errors. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, For some reason, this failed in Powershell with error as. The easiest way to create a versioned module is to put the code for the module in a separate Git repository and to . The source parameter would be:
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