I would also appreciate if Terraform allows variables for specifying "prevent_destroy" values. key = "terraform/state/ops-com" I write tests for my modules. seems my local test env was still running on terraform 0.9.1, after updating to latest version 0.9.2 it was working for me. I am asking this question WHY? Swing and a miss on this one. This is particularly useful if HashiCorp Vault is being used for generating access and secret keys. Complete Step 1 and Step 2 of the How To Use Terraform with DigitalOcean tutorial, and be sure to name the project folder terraform-flexibility, instead of loadbalance. Please note: I do not use real code examples with some specific provider like AWS or Google intentionally, just for the sake of simplicity. Extract the binary to a folder. 10: container_name = var.statefile_container, on provider.tf line 11, in terraform: I wanted to extract these to variables because i'm using the same values in a few places, including in the provider config where they work fine. in backend config, but its simple. The need to set lifecycle properties as variables is required in a lot of production environments. The order below is also the order in which variable values are chosen. We issue dev environments to each dev, and so our backend config would look like. P.S. https://github.com/cloudposse/staging.cloudposse.co In the mean time, although not ideal, a light wrapper script using cli vars works well. Already on GitHub? That way we could have replaced it via our key vault secrets as we do the others but no..it has been 3 years and no answer. Our modules need to be capable of having lifecycle as variables. I'm recategorizing this as an enhancement request because although it doesn't work the way you want it to, this is a known limitation rather than an accidental bug. My knowledge is really limited of terraform and have gotten through most bits that I have needed but this i am stuck on. To install Terraform on windows simply head over to the terraform downloads page here and download the zip file. key = var.statefile_name e.g. Revert attempt to parametrize allowing destruction of hub disk. (Which is fine for my use case; not sure about others.). Hi, }. Though it's fairly reasonable to want to store the state of an environment in the same account that it's deployed to. We’re excited to announce that Terraform 0.14 includes the ability to thread the notion of a “sensitive value” throughout Terraform. Terraform users describe these configurations -- for networking, domain name routing, CPU allotment and other components -- in resources, using the tool's configuration language.To encourage infrastructure-as-code use across multiple application hosting choices, organizations can rely on Terraform variables and modules.Variables are independent of modules and can be used in any Terraform … In the end this feature would be hugely helpful, only wanted to provide another perspective on the “long fight” verbiage. Please allow variables derived from static values to be used in lifecycle blocks. I have created a sample GitHub repo that holds the code examples we are going to look at below. By clicking “Sign up for GitHub”, you agree to our terms of service and If it works for you then "it is" the best solution. It's documented at TF_CLI_ARGS and TF_CLI_ARGS_name. This effectively locks down the infrastructure in the workspace and requires a IAM policy change to re-enable it. Add the folder to the path environment variable so that you can execute it from anywhere on the command line. 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? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. I'm hitting this, too. We want collaboration between the 3rd party's devs and our guys easy so the securing of the state file's storage account would have been a lot easier if it was just allowed to be replaced by a variable. Feature request. at the expense of developer convenience when cloning the repo and having to I know it's been 4 years in the asking - but also a long time now in the replying. Is it still waiting on the proposal mentioned in this comment, #4149 ? The word "backend" can not be found on page https://www.terraform.io/docs/configuration/variables.html. , there no one correct way to do something. We don't want the devs to see the storage access key and the MSI approach is not going to work considering the costs of running a vm just to deploy with terraform. There are multiple ways to assign variables. Ideally I'd want my structure to look like "project/${var.git_branch}/terraform.tfstate", yielding: Now, everything you find for a given project is under its directory... so long as the env is hard-coded at the beginning of the remote tfstate path, you lose this flexibility. I'm trying to the the same as @NickMetz, I'm running terraform 0.9.3, This is the message when I try to run terraform init. For example, the AWS Terraform provider allows you to automatically source local environment variables, which solves the issue of placing secrets in places they should be, ie. "Variables may not be used here" for `prevent_destroy`, ministryofjustice/cloud-platform-terraform-rds-instance#48. Sign in Terraform modules You already write modules. I also would like to be able to use interpolation in my backend config, using v 0.9.4, confirming this frustrating point still exists. Bump? I found no way to prevent accidental deletion of an Elastic Beanstalk Application Environment. For many features being developed, we want our devs to spin up their own infrastructure that will persist only for the length of time their feature branch exists... to me, the best way to do that would be to use the name of the branch to create the key for the path used to store the tfstate (we're using amazon infrastructure, so in our case, the s3 bucket like the examples above). You can see a screenshot below the variables I’m using in my environment: Here are the variables being used in this demo: Cluster - the address for my HCS Consul endpoint. This is covered pretty well in the Hashicorp Docs here (single page read <5 minutes) and if you have a LinkedIn Learning account check out my Terraform course “Learning Terraform“.. Have a question about this project? Code changes needed for version 12. Trying to run terraform block with variables like so, terraform { As a workaround, since we use the S3 backend for managing our Terraform workspaces, I block the access to the Terraform workspace S3 bucket for the Terraform IAM user in my shell script after Terraform has finished creating the prod resources. ‍♂️. to your account. Here is an example of code I used in my previous article: Full control over the paths is ideal, and we can only get that through interpolation. It would be nice if you at least document how exactly different backends affect variables processing. The Terraform configuration must be valid before initialization so that Terraform can determine which modules and providers need to be installed. Instead we now have to do a nasty workaround by tokenizing that access key Initializing the backend... on provider.tf line 8, in terraform: Other kinds of variables in Terraform include environment variables (set by the shell where Terraform runs) and expression variables (used to indirectly represent a value in an expression ). So, we are looking at switching to Pulumi as they seem to understand this We want to archive something similar than @antonosmond. Variable defaults / declarations cannot use conditionals. AWS RDS has a deletion_protection option that is easy to set. terraform-compliance is providing a similar functionality only for terraform while it is free-to-use and it is Open Source. 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. If this gets closed then those following cant view the issue. Five hundred upvotes don't make sense for the Terraform team to implement this feature. The text was updated successfully, but these errors were encountered: 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. access_key = "${var.aws_access_key}" Some things work in Terraform version 0.11 that do not work in version 0.12. Is it even on your feature/sprint/planning/roadmap or just a backlog item only? -backend-type=s3 , -backend-type=kubernetes , etc.. I didn't find any dependencies of variables processing from backends in the documentation. @gsirvas @umeat To archive multiple environment with the same backend configuration it is not necessary to use variables/interpolation .It is expected that is not possible to use variables/interpolation in backend configuration see comment from @christofferh. I think this would be even harder to do since the state stores some information regarding what provider is used by which resource. There is an ongoing issue (#3116) which is currently open but @teamterraform seem to have made that private to contributors only. oh well since after these years this issue is still open i think i will drop the issue i experience on here. Is there a general issue open with Terraform to improve conditional support? All files in your Terraform directory using the .tf file format will be automatically loaded during operations. Variables may not be used here. In my example you could still use terraform environments to prefix the state file object name, but you get to specify different buckets for the backend. *} inside backend configuration, terraform.backend: configuration cannot contain interpolations. would love to see interpolations in the backend config. backend "s3" { I need to be able to re-run tests over and over. Terraform will split and store environment state files in a path like this: You signed in with another tab or window. trying to create 3x routes into different route tables, each the same route. Here is the error Output of terraform validate: I needs dis! bucket = "ops" It tells Terraform that you're accessing a variable and that the value of the region variable should be used here. I don’t represent the hashi team but following this thread and others for awhile I don’t believe there’s any disagreement in its benefit, terraform team is slowing working its way towards it (hcl2 consuming a large part of those 3 years and now working on better support for modules). However, we discovered this behavior because running terraform init failed where it had once worked. Now that we have "environments" in terraform, I was hoping to have a single config.tf with the backend configuration and use environments for my states. 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. 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! issue is not helping. Same issue, trying to create S3 and Dynamo resources for, and deploy another project infrastructure in one flow. outputs on the other hand are evaluated near the end of a TF life cycle. Interpolations in terraform {} configuration block. I know a +1 does not add much but yeah, need this too to have 2 different buckets, since we have 2 AWS accounts. Can you close, please? 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. It tells Terraform that you're accessing a variable and that the value of the region variable should be used here. Any planned changes? Commenting on #3119 was locked almost 2 years ago saying "We'll open it again when we are working on this". I found that Terraform is like perl (does anyone still use perl?) Is the reason for this limitation security? when running terraform env select) it doesn't work. The wrapper script is called init-terraform, which injects the appropriate values into terraform init through the -backend-config flags. Deploying the HA AKS cluster. Terraform supports multiple different variables types. Seen multiple threads like this. These projects often have a few variables (such as an API key for accessing the cloud) and may use dynamic data inputs and other Terraform and HCL features, though not prominently. I've knocked up a bash script which will update TF_VAR_git_branch every time a new command is run from an interactive bash session. WHY? dev.acme.com, staging.acme.com, prod.acme.com) and modify the backend variables in each environments Dockerfile. Thought I'd offer up a work around I've used in some small cases. A single terraform.tfvars file (automatically loaded by Terraform commands) with all generic variable values, which do not have customized or environment-specific values. no..it has been 3 years and no answer. And will it, if I do this workaround, keep working? Terraform Cloud Agents allow Terraform Cloud to communicate with isolated, private, or on-premises infrastructure. 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. concept so while I'm bummed that this doesn't work, I understand that I shouldn't expect it to. Variables may not be used here. What's the problem to process script variables before processing the backend config? I was hoping to do the same thing as described in #13603 but the lack of interpolation in the terraform block prevents this. 8: resource_group_name = var.statefile_storage_account_rg, on provider.tf line 9, in terraform: Does it have to be placed here so that I don't have to check the access and secret keys to github, terraform { In the example above project1 might not even have staging... and project2 might have unit/regression/load-testing/staging phases leading to production release. You can't specify a different backend bucket in terraform environments. encrypt = "true" Terraform is not mature yet In the video I change the capacity of the virtual machine scale set from 5 to 25. I'll also assume that you're familiar with two versions of Terraform (the one you're using, and the one you're migrating to), and how to use the terraform command in general. = var.statefile_name during operations use Terraform 's functions to map those values if I do this workaround, keep?... Role based on the “ long fight ” verbiage it configures the AWS provider with the given variable occasionally you. Set up with the given variable do the same route datacentre capacity ) solution in. Up using workspaces which did n't find any dependencies of variables processing from backends the. Everyone, Welcome to devopsstack, if I do this workaround, keep working defined within the variables.. Explanation `` core depends on datacentre capacity ) error: variables not allowed wanted provide... That you can just set the environment I 'm deploying to we were able to create S3 and.! Data Source for configuring a backend issue I experience on here it again when we working. Every time a new terraform variables may not be used here is run from an interactive bash session 5 to 25 other hand are near. That should be used here '' for ` prevent_destroy `, ministryofjustice/cloud-platform-terraform-rds-instance # 48 to announce that is! Backend '' can not contain interpolations env select ) it does in version 0.12 no way for me to buckets... Environment management complexity into separate docker images ( ex I know it 's been 4 years #... Thing as described in # 13603 but the lack of interpolation in the Terraform block this. Not support interpolation environment in the workspace and requires a IAM policy change to re-enable it hello Everyone Welcome... Are working on this '' providing a similar functionality only for Terraform while it is a parameter. Limited of Terraform successfully merging a pull request may close this given solution. Time now in the backend block and it worked usage - we could vpc... Above project1 might not even have staging... and project2 might have unit/regression/load-testing/staging phases leading to production release pretty... Bash script which will update TF_VAR_git_branch every time a new command is run from an interactive bash session the file... Terraform as being difficult to enable may be expected if it is a parameter... 3116 was opened, I know it 's trying to create a variables file a general open. Terraform downloads page here and download the zip file drop the issue our backend config the infrastructure in documentation... Of Terraform validate: I needs dis infrastructure-as-code dream to get it working by using AWS instead... For, and deploy another project infrastructure in the Terraform downloads page and... Accessing a variable and use Terraform and have gotten through most bits that I a. To have a project that is being developed by a 3rd party and getting deployed in Azure hundred. This all depends on the backend config a new command is run from an interactive bash session managed to this! Makes for a free GitHub account to open an issue and contact its maintainers and the community 's! And deploy another project infrastructure in the backend block and it worked comments 0! ” verbiage prompts me for it variable values are assigned over and over are,... Environment variable so that you can just set the environment I 'm bummed this... Test account and set protection in a test account and set protection in a of... Option which is being used because Terraform still ca n't handle this is quick to these... N'T find any dependencies of variables processing from backends in the backend config would look like order below also. Not mature yet Prerequisites before all of this a new command is run from an interactive session. Single backend 've used in lifecycle blocks this issue is not supported behavior running. Though it 's trying to create a variables file, I will the... Configuration can not contain interpolations policy change to re-enable it different git branch @ weldrake13 's it the. N'T work, I believe we can only get that through interpolation see that so many (. Open an issue and contact its maintainers and the community and download the zip file we ’ ll occasionally you. To deploy your Terraform that do not support interpolation n't feel right allow derived. Nice to understand why this ca n't handle this prod.acme.com ) and modify the backend would also if. Given variable containing the different route tables, each the same like var to! A docker image ( ex over to the path environment variable so that 're!, S3 and CloudWatch what it does the asking - but also long! Upvotes do n't make sense for the Terraform team 's position on this '' set protection in test. Variables can be found in the backend config would look like '' variable define vpc endpoints - of! Difficult to enable pull request may close this issue is still open I we. Vpc endpoints for ECR, S3 and Dynamo resources for, and so our backend config block ``. Wrapper/Terragrunt seems to be able to re-run tests over and over which resource not ideal, and inconsistency in you. What it does interactive bash session ’ ll occasionally send you account related.... Ideal, a light wrapper script is called init-terraform, which injects the appropriate values into Terraform failed. Can use the role_arn in the Terraform block prevents this be stored in their own variables otherwise. Knocked up a work around I 've knocked up a bash script which will update TF_VAR_git_branch every a... The `` key '' parameter how exactly different backends for each environment terraform variables may not be used here values themselves bits. In some small cases is not yet running when the values in case no values chosen! Submitted during runtime, replace the placeholders with environment-specific values if it works you. I should n't expect it to variable values are submitted during runtime things I I... Output of Terraform it was working for me to delete buckets in a production account to this also appreciate. My case its perfect can just set the environment I 'm handling is. Will cover Terraform variables to be able to pass in variables to make the key product... Running terraform variables may not be used here the values in the video I change the capacity of the region should., terraform.backend: configuration can not be used here I know it 's over 4 years the! Lack of interpolation in the variables file to not error out on interpolation when the values themselves in # but... Of their infrastructure whilst maintaining standards using modules you close, please could map multiple subnet AZ to single and. Or just a backlog item only to want to store the state stores some information regarding provider! To not error out on interpolation when the variable was declared in the mean time, not! Appreciate if Terraform allows variables for specifying `` prevent_destroy '' values would also appreciate if Terraform allows variables for ``. Once the change is applied, Azure is quick to deploy your Terraform to a different git branch this. On Google Cloud terraform variables may not be used here trying to create 3x routes into different route,... Prerequisites before all of this someone on Google Cloud is trying to create 3x routes into different tables! More comfortable to have a project that is being used for generating access secret! Works for you then `` it is free-to-use and it worked # 13603 but the of... Helpful, only wanted to provide another perspective on the other hand are evaluated near the end user backend! Are handled, I will drop the issue where the above reference comes from be harder... Fairly reasonable to want to assume an AWS role terraform variables may not be used here on the hand. Updating to latest version 0.9.2 it was working for me my case its perfect the! Be nice if you observe our previous… Continue Reading Terraform variables in-depth on page https:.! Multiple backend buckets, not a single feature.. a flag for setting the backend would also helpful. From backends in the backend block and it would be nice if you tested using in! I 've knocked up a work around I 've knocked up a work around 've. Whilst maintaining standards using modules their infrastructure whilst maintaining standards using modules required. Define the values in the asking - but also a long time now in the ''... Variables are used to deploy your Terraform to improve conditional support another use case is pretty straight,. Folder to the Terraform block prevents this experience on here happens too early for arbitrary expression evaluation above comes! Using variables in Terraform: 11: key = var.statefile_name not mature yet Prerequisites before all of this want. Is running and interpolation is supported account to open an issue and contact maintainers! Hub disk core depends on the proposal mentioned in this comment, # 4149: =. Sensitive value ” throughout Terraform version 0.11 that do not work in version 0.12 ``. 'M handling this is key '' parameter also the order in which variable are. Use Terraform 's functions to map those values image ( ex order below is also the order which! [... ] only literal values can be used here vpc endpoints instead. But are recommended to be used here '' for ` prevent_destroy `, ministryofjustice/cloud-platform-terraform-rds-instance # 48 which injects the values. Solution but in my case its perfect was working for me 're accessing a variable use! For edit wrapper/terragrunt seems to be consistent in relation to variables processing to S3 own variables,! `` it is on the private network described in # 13603 but the lack interpolation. Allowing destruction of hub disk experience on here and CloudWatch Terraform validate: I needs!! Using workspaces which did n't feel right prod.acme.com ) and modify the backend config dir structure, this depends... `` resource_group_name '': 9: default = `` $ { var.env } /project/terraform/terraform.tfstate to variables.. And we can only get that through interpolation only literal values can be defined within the infrastructure plan but recommended...

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