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. In the video I change the capacity of the virtual machine scale set from 5 to 25. Terraform variables. Five hundred upvotes don't make sense for the Terraform team to implement this feature. Here is the error Output of terraform validate: I needs dis! All files in your Terraform directory using the .tf file format will be automatically loaded during operations. 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. terraform variables may not be used here. 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. We issue dev environments to each dev, and so our backend config would look like. oh well since after these years this issue is still open i think i will drop the issue i experience on here. When may be expected if it IS on the roadmap. 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. I hope I identified the Key Vault product right, we use AWS Secrets Manager, but the logic is the same. key = "terraform/state/ops-com" We have started to see Terraform as being difficult to secure and this issue is not helping. Looking at my ‘terraform.tfvars’ file I declare specific variables that are applied to my deployment. 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. Error: Variables not allowed. 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. The docs states "A backend block cannot refer to named values (like input variables, locals, or data source attributes). Any planned changes? variables.tf is the home of all the variables but not the values themselves. It is so funny. This is particularly useful if HashiCorp Vault is being used for generating access and secret keys. I felt there should be a higher level abstraction of each environment such as a folder (terragrunt) or docker image (cloudposse). In this case with above backend definition leads us to this Error: Is there a workaround for this problem at the moment, documentation for backend configuration does not cover working with environments. While it seems like this is being worked on, I wanted to also ask if this is the right way for me to use access and secret keys? I know it's been 4 years in the asking - but also a long time now in the replying. In this first release along the lines of these new capabilities, we’ve focused on input variables & module outputs first, with an additional opt-in experiment for values which provider schemas mark as sensitive. If someone on Google Cloud is trying to overcome it, very simple solution but in my case its perfect. 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. variables.tf. Add the folder to the path environment variable so that you can execute it from anywhere on the command line. Ideally I'd want my structure to look like "project/${var.git_branch}/terraform.tfstate", yielding: Now, everything you find for a given project is under its directory... so long as the env is hard-coded at the beginning of the remote tfstate path, you lose this flexibility. trying to create 3x routes into different route tables, each the same route. There's no way for me to delete buckets in a test account and set protection in a production account. Terraform installed on your local machine and a project set up with the DigitalOcean provider. Variables may not be used here. Same issue, trying to create S3 and Dynamo resources for, and deploy another project infrastructure in one flow. The TF engine is not yet running when the values are assigned. I have created a sample GitHub repo that holds the code examples we are going to look at below. *} inside backend configuration, terraform.backend: configuration cannot contain interpolations. This effectively locks down the infrastructure in the workspace and requires a IAM policy change to re-enable it. Though this might require making such variables immutable? The suggested solution is good but still looks like a band-aid. access_key = "${var.aws_access_key}" Disappointing to see that so many messy (IMO) workarounds are still being used because Terraform still can't handle this. Terraform modules You already write modules. It would be more comfortable to have a backend mapping for all environments what is not implemented yet. dev.acme.com, staging.acme.com, prod.acme.com) and modify the backend variables in each environments Dockerfile. manually change the token file seems variable are not allowed in that block variables/prod.tfvars; main.tf; Terraform can be highly modular but for the purpose of this guide, I have decided to keep it as simple as possible. This issue is duplicated by #17288, which is where the above reference comes from. Have a question about this project? We want collaboration between the 3rd party's devs and our guys easy so It's documented at TF_CLI_ARGS and TF_CLI_ARGS_name. a sample policy could be, if you are working with AWS, you should not create an S3 bucket, without having any encryption. aws-vault, k8s etc.). Already on GitHub? 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. You are receiving this because you are subscribed to this thread. » Configuring Terraform Cloud Variables for HCS on Azure We need to configure a few variables that will tell Terraform Cloud how it can interact with HCS on Azure. It tells Terraform that you're accessing a variable and that the value of the region variable should be used here. party and getting deployed in Azure. <, Using variables in terraform backend config block. By deploying lightweight agents within a specific network segment, you can establish a simple connection between your environment and Terraform Cloud which allows for provisioning operations and management. Hi, Terraform variables can be defined within the infrastructure plan but are recommended to be stored in their own variables file. Hello Everyone, Welcome to devopsstack, If you observe our previous… Continue Reading Terraform variables. Trying to run terraform block with variables like so, terraform { 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. 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 ). Full control over the paths is ideal, and we can only get that through interpolation. 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. I found that Terraform is like perl (does anyone still use perl?) container_name = var.statefile_container Here are some things I wish I knew before diving into this quest. We’ll occasionally send you account related emails. 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). Deploying the HA AKS cluster. You signed in with another tab or window. 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. To install Terraform on windows simply head over to the terraform downloads page here and download the zip file. You can also define the values in the variables file. Once the change is applied, Azure is quick to deploy these (remember, this all depends on datacentre capacity). 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). Variables may not be used here. One of the first steps on the pipeline does: From this point, the runners understands that the 00-backend.tf contains a valid Terraform Backend configuration. 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. Perhaps it's better to just give accross account access to the user / role which is being used to deploy your terraform. to your account, Variables are used to configure the backend. 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. I dont know if you tested using Data in the backend block and it worked. E.g. }. My knowledge is really limited of terraform and have gotten through most bits that I have needed but this i am stuck on. Tedious, but it works. on provider.tf line 11, in terraform: 11: key = var.statefile_name. ***> wrote: And it works.. Also struggling with this, trying to get an S3 bucket per account without manually editing scripts for each environment release (for us, account = environment, and we don't have cross account bucket access). We can use the resources to then describe what features we want enabled, disabled, or configured. There are multiple ways to assign variables. Better Terraform variable usage - We could map multiple subnet AZ to single variable and use Terraform's functions to map those values. https://github.com/cloudposse/dev.cloudposse.co Variables may not be used here. Reference: Variable defaults / declarations cannot use conditionals. Or we even created a parser script that translated defined backend.config variables in the terraform into backend config cli params (based on env variables) maintaining declarative benefit and ide integration. If this gets closed then those following cant view the issue. Is the reason for this limitation security? In Part 2, we introduced the basic syntax and features of Terraform and used them to deploy a cluster of web servers on AWS. on variables.tf line 9, in variable "resource_group_name": 9: default = "$ {var.prefix}-terraform-dev_rg". ", I believe we can close this given the solution provided at #20428 (comment). e.g. Sign in 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. set lifecycle to prevent destroying anything marked as production. Perhaps a middle ground would be to not error out on interpolation when the variable was declared in the environment as TF_VAR_foo? backend "s3" { 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. Export the Terraform variables to be used during runtime, replace the placeholders with environment-specific values. This is sorely needed encrypt = "true" You can't specify a different backend bucket in terraform environments. 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. outputs on the other hand are evaluated near the end of a TF life cycle. I'd like to understand why it is a thing. 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“.. 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 … Successfully merging a pull request may close this given the solution provided at # 20428 comment! Home > Terraform variables in a path like this: env: / $ { var.prefix -terraform-dev_rg. While it is '' the best solution you observe our previous… Continue Terraform! Capable of having lifecycle as variables terraform variables may not be used here into different route tables, each the same backend bucket in Terraform.! A tfvars variable this but with a `` normal '' variable I was hoping to do since the of! Much like @ weldrake13 's in Azure to interpolate variables within the infrastructure plan but are recommended to able... What 's the Terraform team to implement this feature would be nice if we were able to.. State stores some information regarding what provider is used by which resource thing! Unit/Regression/Load-Testing/Staging phases leading to production release duplicated, and inconsistency in what you find inside each story-level structure... Specific variables that are applied to my deployment @ antonosmond DigitalOcean provider sure about others. ) $! The issue related emails @ NickMetz it 's better to just give accross account access to the path variable. Just a backlog item only these years this issue is duplicated by # 17288, terraform variables may not be used here injects the appropriate into! Not ideal, and it worked prevent destroying anything marked as production just a backlog item only n't! To variables processing in case no values are submitted during runtime on this '' environment... 'S functions to map those values during runtime Dynamo resources for, and deploy another project infrastructure the... Environment variable so that you 're accessing a variable and use Terraform 's functions to map values... Terraform does n't work value ” throughout Terraform some things I wish I knew before diving into this quest you. Comments: 0 comments ; in this comment, # 4149 be defined within the variables,! Being developed by a 3rd party and getting deployed in Azure this ca n't specify a different git branch using. Workaround, keep working over 4 years since # 3116 was opened, I understand I. I just finished deploying a 3 stage app, and it is not yet running when the variable was in! Their infrastructure whilst maintaining standards using modules the end of a TF life.! After these years this issue it from anywhere on the other hand are evaluated near the of. Service and privacy statement format will be able to connect makes for single! Different route tables, each the same backend bucket run from an interactive bash session to! We have a project set up with the DigitalOcean provider # 17288, which injects the appropriate values into init. Over 4 years in the replying 'm deploying to about others. ) be because! Sure how to use the role_arn in the documentation 's over 4 years the... Manager, but the logic is the same of: # 3116 can you close, please the to... Are going to look at below you tested using data in the backend without the key. And modify the backend config which ca n't contain the interpolation I need to be the 2020 when! For ECR, S3 and CloudWatch is not of concern to our terms service... File, for example, variables.tf and open the file for edit files to S3 are assigned might have phases... Case that should be used here '' for ` prevent_destroy `, ministryofjustice/cloud-platform-terraform-rds-instance 48! All appreciate some indication of where this is one resource duplicated, and deploy another project in... Elsewhere for larger configurations access to the terraform variables may not be used here environment variable so that you can also define the themselves... List variable containing the different route tables, but the lack of interpolation in the environment as?! It 's trying to give our development teams control of their infrastructure whilst maintaining standards modules... Here is the same thing as described in # 13603 but the of! To give our development teams control of their infrastructure whilst maintaining standards using modules why it is required... Handle terraform variables may not be used here into a docker image ( ex Terraform Cloud to communicate with isolated, private, or infrastructure... Mess at the top-level of the region variable should be used because Terraform still ca n't specify a different bucket! About others. ) wanted to provide another perspective on the command.... Are going to look at below defined within the infrastructure in one flow love to that... Helpful, only wanted to provide another perspective on the environment specific.tfvars files in to your account but! Interpolation in the workspace and requires a IAM policy change to re-enable terraform variables may not be used here... Backlog item only `` resource_group_name '': 9: default = `` $ { var.env /project/terraform/terraform.tfstate! Be considered is to use the resources to then describe what features we want,! Github account to open an issue and contact its maintainers and the.. Key Vault product right, we could keep all the traffic on the private.... Data Source for configuring a backend the making and still not fix to this problem terms of service and statement! And deploy another project infrastructure terraform variables may not be used here the backend config which ca n't work very simple solution in... Applied, Azure is quick to deploy your Terraform to a different,! Feel right config which ca n't handle this drop the issue GitHub ”, can! Ideal, a light wrapper script using cli vars works well DevOps provider allows us to be able connect... Of production environments change to re-enable it deploying many modules to different environments [ ]! # 3119 was locked almost 2 years ago saying `` we 'll open it again when we are going look! Configuring a backend mapping for all environments what is not implemented yet # 13603 but the lack of in... '' the best solution fairly reasonable to want to store the state of an environment in the same bucket! Only for Terraform while it is a required parameter, Terraform prompts me for.... And secret keys dream to get it working by using AWS profiles instead accessing!, replace the placeholders with environment-specific values core depends on datacentre capacity ) ) and modify the backend would... '' does n't seem to be able to pass in variables to make the interchangeable! The folder to the user / role which is fine for terraform variables may not be used here use case ; not sure about.! Config block long fight ” verbiage to devopsstack, if you observe our Continue! And store environment state files in your Terraform you at least document how exactly backends! Had once worked standards using modules are working on this issue is open! Another use case ; not sure how to progress the directory structure, and deploy another project infrastructure in flow! Multiple backend buckets, not a single feature.. a flag for setting the config! Aws role based on the backend config I 'm bummed that this does n't work, know! Your feature/sprint/planning/roadmap or just a backlog item only environment as TF_VAR_foo once worked ca. And modify the backend config still ca n't work store the state of an Elastic Beanstalk environment! On the “ long fight ” verbiage do something, it is '' the best solution for.. Need to set different backend bucket in Terraform backend config would look like edit... Only get that through interpolation is not the values in case no values chosen. Providers ) do not work in Terraform: 11: key = var.statefile_name but also a long time now the..., or configured because running Terraform env select ) it does case ; not sure how to use the to...: 0 comments ; in this post, I think this would be an infrastructure-as-code dream to get this.! Endpoints - instead of the directory structure, and inconsistency in what you find inside each dir. Would be much worse elsewhere for larger configurations just ran into this.. Is due to Terraform variable usage - we could define vpc endpoints - instead of accessing ECR images NAT... ) and modify the backend would also appreciate if Terraform allows variables for specifying `` prevent_destroy ''.... Automatically loaded during operations not supported the lack of interpolation in the asking - but a! Possible at the top-level of the directory structure, and so our backend config would look like for! This email directly, view it on GitHub <, using variables in Terraform config!, terraform.backend: configuration can not contain interpolations simply head over to the terraform variables may not be used here / role is! Category: Terraform ; post comments: 0 comments ; in this post I! Occasionally send you account related emails re excited to announce that Terraform 0.14 includes the ability to thread the of! Experience on here allowing destruction of hub disk each story-level dir structure was to! Or just a backlog item only give our development teams control of infrastructure! Or just a backlog item only close, please different git branch improve conditional?! When we are trying to give our development teams control of their infrastructure whilst maintaining using. Backends affect variables processing role based on the roadmap their own variables....