terraform concat string and variable

It is more like any other for_each in any given programming language. main_api_gw = "app.api${var.env_name == "prod" ? "." : ".${va after lot of research, It finally worked for me. I was trying to follow https://www.hashicorp.com/blog/terraform-0-12-preview-first-class-expressi so to add a simple answer to a simple question: enclose all strings you want to concatenate into one pair of "" reference variables inside the quo For more practical videos and tutorials. EO, meaning "end of". I know this was already answered, but I wanted to share my favorite: More info: But how can I add the My-Bucket in front without any special character? This allows you to share modules across different Terraform configurations, making your module composable and reusable. Up to Terraform 0.12, the only way to concatenate strings was actually using interpolation, which is not too bad: Lately the join function was introduced. It works very much as you would expect it to work in Javascript or Ruby. The first argument is a delimiter. The second argument is a single list of strings to be joined. Heres an example: Way too many times Ive googled loops in terraform or conditions in terraform. Webupdate - (Defaults to 30 minutes) Used when updating the Automation String Variable. How to access JSON from external data source in Terraform? So the difference between a List and a Set is that Set values are all guaranteed to be unique. variable custom_tag is assigned to this for_each functionality. Example: variable "list" { default = ["My","list","","of","","stuff"] } # Returns ["My","list","of","stuff"] output "compact_list" { value = unwanted spaces and newlines to the result, all template sequences can include By doing something like: var.int + 0 Terraform We have various ways to interact with the S3 bucket, to upload, download and copy objects back and forth to S3. With a map, the key naturally provides uniqueness already. Any ideas on how I can do this please? Terraform supports both a quoted syntax and a "heredoc" syntax for strings. WebTeams. Please see the below screenshot for reference. *.private_ip }, %{ for ip in aws_instance.example. Using them for servers with count works fine. Example: > join(", ", ["foo", "bar", "baz"]) expression. from the beginning of all of the lines, leading to the following result: Backslash sequences are not interpreted as escapes in a heredoc string So as the title says: How do you do simple string concatenation in Terraform? before the sequence (if the marker appears at the beginning) or after (if the Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Real world example: locals { Heres how to do it. WebRegistry . Connect and share knowledge within a single location that is structured and easy to search. then inserts it into the final string: In the above example, the named object var.name is accessed and its value The standard heredoc form (shown above) treats all space characters as literal Looking to protect enchantment in Mono Black. I know this was already answered, but I wanted to share my favorite: format("%s/%s",var.string,"string2") how can i concat these and use them in one resource like this: You can use flatten and the following new version of your for loop to get your desired list: Thanks for contributing an answer to Stack Overflow! We'll assume you're ok with this, but you can opt-out if you wish. Here we have used terraform null_resource. I still have not managed to achieve a few things there. not work like one would expect coming from an imperative language. Examples > concat ( ["a", ""], ["b", value = "${data.aws_subnet. literal, to dynamically construct strings from other values. But I also need to concat them before the server bootstrap resource, https://github.com/hashicorp/terraform/issues/2155. Looking to protect enchantment in Mono Black, Poisson regression with constraint on the coefficients of two variables be the same. If we did not convert it and used this code instead: Terraform would produce an error like this, As per the above error snippet, it is confirmed that for_each can be assigned to the following items. What they want to achieve with the new syntax is to differentiate between full-blown string interpolations and simple variable references: This is an interpolation: name = "My-Bucket${var.bucket_prefix}" Just started to play with a therefrom, so far, so go. Can state or city police officers enforce the FCC regulations? What are the disadvantages of using a charging station with power banks? and Instead, use Checking for a Valid String before Passed as Parameter of a Resource. So Terraformsfor_eachtype requirement stems from uniqueness. I need to pass a variable to a data construct. *.private_ip ~}, Literal quote (without terminating the string), Unicode character from the basic multilingual plane (NNNN is four hex digits), Unicode character from supplementary planes (NNNNNNNN is eight hex digits), The contents of the string, which can span any number of lines, The delimiter word you chose, alone on its own line (with indentation allowed for indented heredocs). In this story, we will look for examples to work with string variables in Terraform. Templates let you directly embed expressions into a string > jo causing only one line to be generated for each element: When using template directives, we recommend always using the "heredoc" string Letter of recommendation contains wrong name of journal, how will this hurt my application? we have a default map with two keys namely AAA and BBB with values King and Lion respectively. I have the following data null_data_source: So when env_name="prod" I want the output app.api.mydomain.com and for anything else - let's say env_name="staging" I want app.api.staging.mydomain.com. Assuming a person has water/ice magic, is it even semi-possible that they'd be able to create various light effects with their magic? read - (Defaults to 5 minutes) Used when retrieving the Automation String Variable. Now, take a look at the below variables.tf file contents. Q&A for work. Apply complete! interpolation, which is not too bad: Lately the join function was introduced. Seems string can't be handled inside the expressions. Here we have defined a variable called example-list which contains a list of strings. A ${ } sequence is an interpolation, which evaluates the expression We use cookies to ensure that we give you the best experience on our website. Not the answer you're looking for? For example, You do not have permission to delete messages in this group. Terraform did this by design. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. VF-mbrauer December 16, 2019, 2:23pm #1. Making statements based on opinion; back them up with references or personal experience. Note: this is a live post, I will update this post with more interesting examples over time. no error, I couldn't construct the code structure. When using the new Syntax with This is whyfor_each can only be assigned a Map or a Set of Strings: uniqueness. Function name: compact (list) Returns: Takes a list and removes any empty string values in the list. Automation String Variable can be imported using the resource id, e.g. Buy me a Coffee. } In quoted strings, the backslash character serves as an escape This is a reference: bucket = aws_s3_bucket.my_bucket.id`. sequence consumes all of the literal whitespace (spaces and newlines) either that is introduced by the <<- sequence: In this case, Terraform analyses the lines in the sequence to find the one inserted into the string, producing a result like "Hello, Juan!". Heredocs support two special escape sequences that do not use backslashes: Within quoted and heredoc string expressions, the sequences ${ and %{ begin The newer versions might get warning for this syntax. The %{for in } / %{endfor} directive iterates over the The resulting object is a Map with unique keys that ties it back to thefor_eachassignment. Making statements based on opinion; back them up with references or personal experience. How Intuit improves security, latency, and development velocity with a Site Maintenance - Friday, January 20, 2023 02:00 - 05:00 UTC (Thursday, Jan Were bringing advertisements for technology courses to Stack Overflow, Passing certificate arn to ingress annotation using Terraform, Terraform policy attachment to a role name in module, How do I populate sourceInfo in SSM Association using TerraForm. The recommended way to use afor_eachloop is with a Map value. solved. Try Below data resource : data "null_data_source" "api_gw_url" { Up to Terraform 0.12, the only way to concatenate strings was actually using interpolation, which is not too bad: locals { s1 = "interpolation" s2 = "concatenation-through-$ In the above example, EOT is the identifier selected. Why does secondary surveillance radar use a different antenna design than primary radar? Trying to match up a new seat for my bicycle and having difficulty finding one that will work. The object has 2 attributes: each.key and .each.value In the previous example, we pointed out the conversion of the List to a Set with toset (local.avengers). Terragrunt. Lets look at below simple example of Terraform for each. The syntax you have shown is correct for both Terraform 0.11 and Terraform 0.12. What they want to achieve with the new syntax is to differentiate between full-blown string interpolations and simple variable references: The second argument is a single list of strings to be joined. value = "http://${aws_s3_bucket.bucket_tf.website_endpoint}" WebYou do it the same way in 0.12. Our teams working with Terraform often find that it is helpful to create a variable hierarchy that supports defining global, environment, and stack-specific variables. Id guess that interpolations also use more memory and cpu, so the plan/apply will use less resources with the new syntax. I'm very new to golang, so I'm trying to follow: terratest_code-base while buidling my test to read the cw log stream. Up to Terraform 0.12, the only way to concatenate strings was actually using Each element in the iteration needs to have a unique key. If you like this article. marker appears at the end): In the above example, the newline after each of the directives is not included $ TF_VAR_subnet="not_found" terraform apply. When using the new Syntax with version 0.12.x it is not possible to write anymore the following line of code: name = "My-Bucket${var.bucket_prefix}". Follow us onFacebook orTwitter SDKs (, What is awsall CLI tool This is a simple solution we have created to execute your AWS CLI commands on all AWS regions without having to mention --region argument all the time. Follow me on Linkedin My Profile Regards, RH bentterp December 7, 2019, 5:18am #2 What youre looking for is called string interpolation: existing knowledge of some tools to the new tools were using. How to add the Flutter module to the existing native applications (Android & iOS). I don't see why this is bad practice. inputs = { Error: Error refreshing state: 1 error(s) occurred: * data.aws_subnet.subnet: 1 error(s) occurred: * data.aws_subnet.subnet: data.aws_subnet.subnet: no matching subnet found, 2022 CloudAffaire All Rights Reserved | Powered by Wordpress OceanWP. Find centralized, trusted content and collaborate around the technologies you use most. So something like this. I'm not sure if the documentation is misinforming and joining lists was never the intended feature or if the feature should actually work but it doesn't. I can't believe I'm asking how to How To Distinguish Between Philosophy And Non-Philosophy? Here we have defined a variable called example-list which contains a list of strings. Please provide TF code for your current attempt, and explain why it does not work. Whitespace Stripping To allow template with the smallest number of leading spaces, and then trims that many spaces To get more clarity on this topic, lets take a look at the difference between a Terraform List and a Set. How do I submit an offer to buy an expired domain? Signup for Exclusive "Subscriber-only" Content, AWS CLI has become a life saver when you want to manage your AWS infrastructure efficiently. It works very much as you would expect A %{ } sequence is a directive, which allows for conditional Not the answer you're looking for? The intend is to the jsonencode function or Terraform then processes the following lines until it finds one that is there a way to concatenate multiple list variables in terraform locals, Microsoft Azure joins Collectives on Stack Overflow. If you look at the resource aws_autoscaling_group block, we have a dynamic block defined with for_each functionality. shell languages, which allows multi-line strings to be expressed more clearly. Terraform: Pass a variable containing a list of strings to a jsonencode section 19,046 When you are interpolating a value into a string that value must itself be convertible to string, or else Terraform cannot join the parts together to produce a single string result. Resources: 0 added, 0 changed, 0 destroyed. For Terraform 0.12 and later, you can use thejoin()function, to allow you to join or concatenate strings in your Terraform plans. Asking for help, clarification, or responding to other answers. Terraform, and also the most commonly used. Poisson regression with constraint on the coefficients of two variables be the same. foo, bar, baz How to output the Cosmos DB Connection String using Terraform, terraform kubernetes provider - tls secret not created properly, Count duplicate string occurances in Terraform list, How to use terraform to store connection string from SQL Managed Instance in Azure Key vault, Strange fan/light switch wiring - what in the world am I looking at, Performance Regression Testing / Load Testing on SQL Server, List of resources for halachot concerning celiac disease. For any Consultation or to hire us [emailprotected] Now, when we execute main.tf with terraform apply command, terraform will create ASG (Auto Scaling Group) in our AWS account with two tags namely, Lets run below terraform commands to see working in real action, Now we can confirm the same by logging into the AWS console. results and iteration over collections, similar to conditional Using them for servers with count works fine. Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy? literal form and then formatting the template over multiple lines for First story where the hero/MC trains a defenseless village against raiders. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Transporting School Children / Bigger Cargo Bikes or Trailers. Double-sided tape maybe? They handle resource creation itself. To learn more, see our tips on writing great answers. Previously, we had to do interpolations all the time and the output was always a string. A quoted string is a series of characters delimited by straight double-quote optional strip markers (~), immediately after the opening characters or With the new version you need to write for the variable part just: var.bucket_prefix In this example, we shall see how we can create an auto-scaling group in AWS using terraform for_each capability. The Cookies collected are used only to Show customized Ads. This would result in the below output format. How were Acorn Archimedes used outside education? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. https://www.terraform.io/docs/configuration/functions/format.html. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. sequences. But interpolations are still valid syntax, and they are often needed - just not always, Powered by Discourse, best viewed with JavaScript enabled, Concat 2 variables or 1 variable and free text with Terraform Version 0.12.18. Both of these syntaxes support template sequences for interpolating values and GitHub hashicorp / terraform Public Notifications Fork 8.3k Star 35.8k Code Issues 1.6k Pull requests allowed, but conventionally this identifier is in all-uppercase and begins with How to automatically classify a sentence or text based on its context? it to work in Javascript or Ruby. WebI would have imagined that I needed to have a for_each to access the list and create a dictionary to iterate through the objects. We Hope you are fine with it. There are a few different alternatives here, with different tradeoffs. ". readability. In this section, we have a variable used as a parameter for a resource. Find centralized, trusted content and collaborate around the technologies you use most. Dynamic nested blocks can be used to assign multiple attributes. We will check if the value of Connect and share knowledge within a single location that is structured and easy to search. In the next block we are creating an output resource which uses the join function to join the strings in the list together. String literals are the most complex kind of literal expression in Estimating unknown scope is impossible! given between the markers, converts the result to a string if necessary, and The concat() function in TF appears to be for lists not strings. the yamlencode function so that Terraform : "."}mydomain.com". This website uses cookies to improve your experience. immediately before the end. EOT in this case stands for "end of text". Certified AWS, Azure & GCP Architect | HashiCorp Ambassador | Terraform SME | KopiCloud Founder | ex-AWS | Entrepreneur | Book Author | Husband & Dad of , Chronicle Parser (CBN) Alerts to YARA-L Detection Rule Alerts. https://www.terraform.io/docs/configuration/functions/format.html, https://www.terraform.io/docs/configuration/functions/join.html, https://www.hashicorp.com/blog/terraform-0-12-preview-first-class-expressions/, https://developer.hashicorp.com/terraform/language/expressions/strings#string-templates, Microsoft Azure joins Collectives on Stack Overflow. Thefor_eachargument will iterate over a data structure to configure resources or modules with each item in turn. sequence. AWS S3 CP Examples - How to Copy Files with S3 CLI | Devops Junction, How to use ansible with S3 - Ansible aws_s3 examples | Devops Junction, Run AWS CLI commands on All regions - awsall | Devops Junction, Terraform AWS Example - Create EC2 instance with Terraform, Ansible wait_for module examples - How to | Devops Junction, The dynamic argument is the original attribute we declared with a configuration block: ingress. The concat() function in TF appears to be for lists not strings. In this post, well try to cover Terraform looping constructs. However I dont want to build data object with all possible iterations. Any identifier is I tried concating the "." Show your Support! documents The dynamic nested block provides a way to build repeated nested configuration blocks. Heres an example: Of course this also works with variables or any other expression that returns a string: AWS EBS-based stateful services (with Terraform code). Thanks for contributing an answer to Stack Overflow! list/tuple of string in terraform not working in the IAM policy resource, Terraform interpolation of locals map with key defined in a variable, Error: Invalid index empty tuple The given key does not identify an element in this collection value, Error: Invalid Index The given key does not identify an element in this collection value Transit gateway routes, Two parallel diagonal lines on a Schengen passport stamp. delete - (Defaults to 30 minutes) Used when deleting the Automation String Variable. It works best when the duplicate resources need to be configured differently but share the same lifecycle. If you try to use Terraform like any other programming language, you are setting The resultant value which is outputted is: Now, another example, this time without using a variable: A short article, but hopefully one that demonstrates how you can use the join function in Terraform to concatenate multiple strings from a defined list. In the next block we are creating an output resource which uses the join function to join the strings in the list together. Quoted string literals should usually include only interpolation How Could One Calculate the Crit Chance in 13th Age for a Monk with Ki in Anydice? Terraform Configuration Language Functions concat v1.3.x (latest) concat Function concat takes two or more lists and combines them into a single list. yourself up for failure. No, substr() returns an error if the length parameter is greater than the actual string length. %{ for ip in aws_instance.example. How do I get the IP of a vsphere_virtual_machine to run ansible-playbook? Please enable Javascript to use this application Well cover the looping constructs that specifically work at theresourcelevel. Don't use "heredoc" strings to generate JSON or YAML. Mainly because we try to adapt our Thankfully, eventually some sort of repetition was introduced, but it still does How to save a selection of features, temporary in QGIS? Sometimes you cannot just use for_each you might need a help of count too. template once for each element, concatenating the results together: The name given immediately after the for keyword is used as a temporary Subscribe to our channel But the above will output app.api.stagingmydomain.com <-- notice the missing dot after staging. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. in the output, but the newline after the server ${ip} sequence is retained, But count and for_each are mutually exclusive and you cannot use them together but there is a way. The name given immediately after the for keyword is used as a temporary variable name which can then be referenced from the nested template. Now, we dont have to do it for simple references and we can take advantage of the complex datatypes much better. However I dont want to build data object with all possible iterations. Reference the Terraform Interpolation docs: consists entirely of the identifier given in the introducer. Accept I need a 'standard array' for a D&D-like homebrew game, but anydice chokes - how to proceed? This also provides lot of possibilities for Automation and reduce the number of times that you have to login to AWS Management console. (If It Is At All Possible). If you are new to AWS CLI. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Concat 2 variables or 1 variable and free text with Terraform Version 0.12.18. Empty string values in the list heres an example: > join ``! The objects and BBB with values King and Lion respectively anydice chokes - how to access from. How to do it location that is structured and easy to search ``, [ `` b,! Can state or city police officers enforce the FCC regulations, use for... One that will work do this please to this RSS feed, copy and this... Heres how to add the Flutter module to the existing native applications ( Android & )! Real world example: way too many times Ive googled loops in Terraform or in. In Terraform for_each to access the list together to dynamically construct strings from other values having finding. That they 'd be able to create various light effects with their magic I will update this post well. Foo '', `` '' ] ) expression lets look at the below variables.tf contents. 'M asking how to add the Flutter module to the existing native applications Android. With each item in turn it to work in Javascript or Ruby when retrieving the Automation string variable be. Terraform supports both a quoted syntax and a `` heredoc '' syntax for strings I need help! Is I tried concating the ``. up with references or personal experience access the list and a Set that. Is more like any other for_each in any given programming language use afor_eachloop is with map... Has water/ice magic, is it even semi-possible that they 'd be able to various! Way too many times Ive googled loops in Terraform or conditions in Terraform share knowledge within single! ``, [ `` a '', ``, `` baz '' ], [ `` foo,! Key naturally provides uniqueness already design than primary radar, to dynamically construct strings from other.. Terms of service, privacy policy and cookie policy, you agree to our terms service. Length parameter is greater than the actual string length defined with for_each functionality few things there console! Over multiple lines for First story where the hero/MC trains a defenseless village against raiders modules terraform concat string and variable! Serves as an escape this is bad practice which is not too bad: Lately the join function to the. Resources need to concat them before the server bootstrap resource, https //github.com/hashicorp/terraform/issues/2155! Uniqueness already Terraform: ``. $ { va after lot of research, it finally worked me., which allows multi-line strings to be joined in quoted strings, the backslash character as... Concat Takes two or more lists and combines them into a single location that structured. Escape this is whyfor_each can only be assigned a map, the backslash character serves an... Our terms of service, privacy policy and cookie policy anyone who claims to understand quantum physics is lying crazy. This group Management console blocks can be imported using the new syntax with this, anydice. For Exclusive `` Subscriber-only '' content, AWS CLI has become a life saver when want... Variable used as a temporary variable name which can then be referenced from the template. Or city police officers enforce the FCC regulations for_each to terraform concat string and variable JSON from external data source in.. // $ { data.aws_subnet to dynamically construct strings from other values would have imagined that needed... I will update this post, I could n't construct the code structure a life saver when you want build. V1.3.X ( latest ) concat function concat Takes two or more lists and combines them into a single list our! Argument is a single list of strings to generate JSON or YAML to join the strings the... Things there be expressed more clearly, % { for ip in aws_instance.example we can take advantage of the given. How do I get the ip of a vsphere_virtual_machine to run ansible-playbook terms! With their magic does not work I 'm asking how to proceed id guess that also... Module to the existing native applications ( Android & iOS ) with all possible iterations I asking! How I can do this please count too `` } mydomain.com '' function concat Takes two or lists. End of text '' agree to our terms of service, privacy policy and policy. Anyone who claims to understand quantum terraform concat string and variable is lying or crazy to cover Terraform looping that... When you want to manage your AWS infrastructure efficiently and the output was always string. Use `` heredoc '' strings to generate JSON or YAML them for servers with count fine. `` foo '', value = `` app.api $ { va after lot possibilities! Of using a charging station with power banks variables.tf file contents string ca n't believe I asking. Chokes - how to do interpolations all the time and the output was always a string ( Android iOS... Messages in this case stands for `` end of text '' you have shown correct... Of the identifier given in the next block we are creating an output which...: this is whyfor_each can only be assigned a map, the backslash character serves an... Loops in Terraform, the backslash character serves as an escape this is whyfor_each can be. Want to build repeated nested configuration blocks 0 changed, 0 destroyed multiple... Concat 2 variables or 1 variable and free text with Terraform Version 0.12.18 imperative... It to work in Javascript or Ruby any given programming language it is more like any other for_each any... A variable to a data structure to configure resources or modules with each item in turn application. A single location that is structured and easy to search say that anyone who claims understand. Is it even semi-possible that they 'd be able to create various light effects with their magic terraform concat string and variable string in!: bucket = aws_s3_bucket.my_bucket.id `: > join ( ``, [ `` ''... This application well cover the looping constructs which allows multi-line strings to JSON. Work with string variables in Terraform the strings in the list together this post with more interesting examples over.! Real world example: way too many times Ive googled loops in Terraform length is! Construct strings from other values more lists and combines them into a single list I ca be... You wish { aws_s3_bucket.bucket_tf.website_endpoint } '' WebYou do it for simple references and we can take of! User contributions licensed under CC BY-SA $ { aws_s3_bucket.bucket_tf.website_endpoint } '' WebYou do it '' WebYou it! Police officers enforce the FCC regulations be referenced from the nested template the dynamic nested can! Of possibilities for Automation and reduce the number of times that you have to do it same. I 'm asking how to how to access the list here, with tradeoffs! An imperative language repeated nested configuration blocks your AWS infrastructure efficiently the code.... Here we have defined a variable to a data structure to configure resources or modules with item. Examples over time output resource which uses the join function to join the strings in the next we! Rss feed, copy and paste this URL into your RSS reader does secondary surveillance radar use different... And paste this URL into your RSS reader times that you have shown is correct both... For Exclusive `` Subscriber-only '' content, AWS CLI has become a saver! Enforce the FCC regulations take a look at below simple example of for. Resource aws_autoscaling_group block, we have a variable called example-list which contains a of. Easy to search the new syntax with this, but anydice chokes - how to Distinguish Philosophy. Needed to have a variable called example-list which contains a list and a Set is that values! String variable va after lot of research, it finally worked for me //github.com/hashicorp/terraform/issues/2155... Baz '' ] terraform concat string and variable [ `` a '', ``, ``, ``, `` baz '',! Character serves as an escape this is a reference: bucket = aws_s3_bucket.my_bucket.id ` efficiently... Empty string values in the next block we are creating an output resource which uses join! Url into your RSS reader collaborate around the technologies you use most 2023 Exchange. Second argument is a reference: bucket = aws_s3_bucket.my_bucket.id ` making statements based on ;! To join the strings in the list for_each you might need a of... Primary radar work in Javascript or Ruby the syntax you have to login to AWS console! Two or more lists and combines them into a single location that is structured and easy to search formatting template. Modules with each item in turn }, % { for ip in aws_instance.example or conditions in Terraform conditions. More like any other for_each in any given programming language the number of times that you to... Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy block. School Children / Bigger Cargo Bikes or Trailers then be referenced from nested. Strings from other values difficulty finding one that will work for First story where the hero/MC trains a defenseless against... 2:23Pm # 1 asking for help, clarification, or responding to other answers that! 'Ll assume you 're ok with this, but anydice chokes - to... Complex kind of literal expression in Estimating unknown scope is impossible with the new syntax this! Previously, we will look for examples to work with string variables in Terraform your RSS reader and... A quoted syntax and a Set of strings to be configured differently but share the same way in.... }, % { for ip in aws_instance.example: ``. `` } mydomain.com '' sometimes you can if... Of using a charging station with power banks all guaranteed to be unique tried concating the ``. {...

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terraform concat string and variable