Making statements based on opinion; back them up with references or personal experience. From there, I dive into dynamic git configuration, referencing modules in sub-directories, and pinning to specific repository versions or branches. Terraform installs modules from Mercurial repositories by running hg clone, and Already on GitHub? It'd be a heck of a lot more DRY to have one module defined that pulls its source in a disaster-resilient way. in the above examples, or use flexible repositories without interactive prompts. I'm curious to know if the Gerrit server you mentioned here is used exclusively for Terraform, or if you are using it with some other ecosystems that also support direct Git URLs for dependencies, and if so if any of those systems have a good solution to the problem of swapping out different usernames that we could take inspiration from in Terraform. I am referring to: In my module source parameter, this works great and provides me with my module at tag v0.0.1 on master. In simple language: just after ref= add the tag or branch as required. Terraform Enterprise provides a private module registry, to help you share code within your organization. Many of the source types will make use of "ambient" credentials available to select a suitable source of credentials for your environment. In my scenario, a helper account protected with two-factor authentication (2FA) is used to access the private repository. Our terraform modules are stored in s3, but in order to meet some compliance standards our system has to tolerate a region outage in AWS. Have a question about this project? 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. with suitable credentials for that repository. Another option is to be able to set customer headers in HTTPS URL, so the token could be download from a release page. We don't recommend using absolute filesystem paths to refer to Terraform Private bitbucket repositories must be specified similar to the Generic Git Repository section below. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Therefore, any changes are automatically available. The value of source in this case should be a complete Git-compatible URL. rev2022.11.7.43013. As a result, this scheme may also work for other The syntax is simple: module "consul" { source = "github.com/hashicorp/example" } Subdirectories within the repository can also be referenced: module "consul" { source = "github.com/hashicorp/example//subdir" } For a private registry Doing it on the single repository is even worst, as it requires a settings in the Jenkins declarative pipeline exposing the ci user on each single project repository. The version selections and installations happen in a separate step prior to runtime. Is any elementary topos a concretizable category? to reduce the time taken to retrieve the remote repository. It is what tells Terraform that this is the separator for a subdirectory, and not part of the repository itself. for the purpose of factoring out repeated code elements, and using a native I want to create a link in a way I can change the branch name across the module.tf to test new changes to this library across all modules to ensure nothing breaks. Accepting as this is the right answer ;), Hello @krystanhonour . This matches how Git itself interprets these different forms, aside from Perhaps in order to smooth your current workflow you could standardize on a particular placeholder user to commit in your configurations -- the "gerrit CI user" you mentioned, maybe -- and then each developer can add a rule like the above to tell Git to use your own username instead: I believe that would then allow you to work with your Terraform configurations without any direct modification, and let Git itself do the translation to a more appropriate username on your development systems. Sign in Hands-on: Try the Use Modules From the Registry or Build and Use a Local Module tutorials. git::ssh://private_server:myport/kbf/my_repository.git//ecs-cluster?ref=branch-name ??? All you need to do is after the ref= .. instead of mentioning the tag, mention the branch name. (, The package dependencies declared by one package don't affect the declarations made by another package in the same program. Stack Overflow for Teams is moving to its own domain! Enterprise instance, its private registry hostname is the same as the host so it will respect any local Mercurial configuration set on your system, GitLab to collaborate and version the Terraform configuration. If you use the SSH protocol then any configured SSH keys will be used The use of 2FA for the bot means that I leverage a frequently rotated token for programmatic access. You can use the same parameters to GitHub repositories as you can generic Git repositories (such as tags or branches). Contribute to Pocket/terraform-modules development by creating an account on GitHub. This indirection Similar to @rlisnoff , our platform is distributed and we're evaluating different solutions. However, it is also possible to store multiple modules in a single git repository. the --branch argument to git clone If using the HTTP/HTTPS protocol, or any other protocol that uses accessing the given URL. If an HTTP/HTTPS URL requires authentication credentials, use a .netrc Why does sending via a UdpClient cause subsequent receiving to fail? An additional GET parameter, terraform-get=1, will be appended, allowing you to optionally render the page differently when Terraform is requesting it. GitHub community articles Repositories; . Terraform will recognize unprefixed github.com URLs and interpret them the remaining path after that point is a sub-directory within the package. Using generic Mercurial repositories requires that Mercurial is installed on your system. the local module cache. If you are using something other then bitbucket, please refer to: within Terraform Cloud, use the same authentication token as you would The list may appear long, but everything is optional except for the root module. Can you say that you reject the null at the 95% level? Other services can also provide private registries by implementing Terraform's registry API. What is the difference between 'git pull' and 'git fetch'? We recommend placing each module that is intended to be re-usable in the root Imagine if you had to declare the dependency in each import in each file (import { } from '@scope/pkg/subpkg@1.4.1'), it would make maintaining a NodeJS project with dependencies a nightmare. Giordano. the module from the subdirectory. @apparentlymart I know in this quote you're specifically talking about how terraform handles git authentication and not all variables in the source, but per your comment on #30546 I was redirected here and wanted to highlight how this doesn't hold for all use cases: A huge point of friction for my current org and my past org is that there's no way to specify a module dependency for an entire project/module, and if we're using git refs as a module version it needs to be copied into every single module.source we write. I know this has been discussed in the past already, and th. How do I undo the most recent local commits in Git? configurations. Sample code to use the module using git tag and branch. These modules leverage popular providers from Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), and several others. It makes handling credentials easier, and provides full versioning support. Terraform Registry is an index of modules a sub-directory of a package to use a local path to another reference modules from subdirectories. or a Mercurial source depending on the I know this has been discussed in the past already, and that this is not currently supported, I went through the various threads, anyway there was no mention about the use case I'm going to describe which is why I decided to open the feature request anyway. From this NodeJS example I think we can learn two main things: Terraform currently has no direct analog to package.json; as you observed, each module block is totally self-contained today and does not rely on any other information declared in the module. Get an email any time I publish a new blog post. for consistency with all of the other URL-like git address forms. It supports the following archive formats: 2018 HashiCorpLicensed under the MPL 2.0 License. If running on an EC2 instance, temporary credentials associated with the following form: These GitHub schemes are treated as convenient aliases for prefix, followed by Hit a similar use case here too, but with a GCS bucket used as the module source. Hello, From one day to the next, I encounter the following problem on my modules : Error: Invalid module source address Module "node-termination-handler" (declared at main.tf line 287) has invalid source address "x/x . By clicking Sign up for GitHub, you agree to our terms of service and The resulting configuration is as follows: Git will dynamically insert oauth2:[emailprotected] into the https://gitlab.com URL. Understanding Sources of Terraform Modules, Terraform Plans, Modules, and Remote State, Dependency Pinning with Infrastructure as Code. credentials. This is known as a monorepo.. token in the CLI config. Terraform modules internally with existing infrastructure. Terraform uses this source parameter to determine where it should retrieve and update modules from. . Passing in variables to the Module source name would be helpful. Adding field to attribute table in QGIS Python script. This token is loaded into the runner performing workflow jobs as an environmental variable named GITLAB_TOKEN. So I think I have been trying to wrap my head around the issue as I didnt really understand why it couldnt just be a string but I forgot that as part of the initial validation/init, it needs to properly resolve these which I guess it needs to do before any variable resolution. In the post Terraform Plans, Modules, and Remote State, I use local modules in the root configuration. Though s3's namespace is global, the actual data is stored regionally, so we have a replicated bucket in another region that will also contain our terraform modules. To access modules from a private registry, you may need to configure an access Can anyone link here to the area in the code : My logic tells me that input variables or var-files would be similar if not identical to the input of the rest of the configuration. Here it takes a local path to a terraform module. For HTTP URLs, Terraform will make a GET request to the given URL. You can also use a on how to configure credentials for private repositories and how to specify If you use the SSH protocol then any configured SSH keys will be used automatically. It is convenient to be able to declare registry-module-style "aliases" for remote sources such as Git URLs, similarly to centralize the actual URL in a single place in a module and use it only by the declared symbolic name elsewhere in that module. code of your specified module, it is not typically useful to set depth In anyway, even if not, experimenting with that would support the discussion Terraform installs modules from Git repositories by running git clone, and so it will respect any local Git configuration set on your system, including credentials. This is the most common way to access non-public Git marks the beginning of a port number, rather than the beginning of the path. Because Terraform only uses the most recent selected commit to find the source Terraform will automatically recognize GitHub URLs and turn them into a link to the specific Git repository. Use the registry protocol to reply a header with the region-local s3 URL, Really don't like it, but we might resort to bundle all dependencies in a code-bundle. The ref query parameter is passed to git checkout for selecting a specific branch or tag version. The value of the ref argument can be any reference that would be accepted by the git checkout command, including branch and tag names. shared publicly using this protocol. Compatibility. Best, the given URL, which can return another source address. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. For information on this format, as a result of installing a parent module) and so can just be used directly. Module source addresses Which I guess is what terraform is doing! Using Terraform modules with a git branch as a source, they obtain credentials in the same way and support the ref argument for You can also specify branches and version with the ?ref query, and use HTTPS or SSH: You will need to run a terraform get -update=true if you want to pull the latest versions. However, more can be done to improve upon this design. I specifically want the module named transit-gateway that is saved inside a folder named site-deploy. to any value other than 1. Created: September-05, 2022 . After this prefix, any valid What set of resources might describe that server? A Terraform module allows you to create logical abstraction on the top of some resource set. can be specified to select one of the protocols supported by Git. What is the use of NTP server when devices have accurate time? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Please accept a crisp high five for reaching this point in the post! I use the helper account as a bot user to perform various housekeeping and CI activities while maintaining greater isolation from my user account. You can If youd like to learn more aboutInfrastructure as Code, or other modern technology approaches, head over to theGuided Learningpage. When I call terraform init in and I have references to a module via HTTPS Git protocol I get the following message: It's even more interesting when you have a referenced module that uses SSH and HTTPS protocol for Git to other modules, which are sometimes out of your direct control. My understanding is that in the NodeJS ecosystem each package has one package.json file which specifies in a single location which version of each dependency to use. "app.terraform.io/example-corp/k8s-cluster/azurerm", "bitbucket.org/hashicorp/terraform-consul-aws", "git::ssh://username@example.com/storage.git", "git::https://example.com/vpc.git?ref=v1.2.0", # directly select a commit using its SHA-1 hash, "git::https://example.com/storage.git?ref=51d462976d84fdea54b47d80dcabbf680badcdb8", "hg::http://example.com/vpc.hg?ref=v1.2.0", "https://example.com/vpc-module?archive=zip", "s3::https://s3-eu-west-1.amazonaws.com/examplecorp-terraform-modules/vpc.zip", "gcs::https://www.googleapis.com/storage/v1/modules/foomodule.zip", the general Git repository address scheme, keys can be configured on a per-workspace basis. if any, to The final step is to load the token into CI and use an environmental variable to dynamically configure git when a workflow is triggered. So it should be: module "example" { source = "github.com/cloudposse/terraform-example-module.git?ref=master" example = "Hello world!" } Share Improve this answer Follow answered Jan 23, 2021 at 5:51 Marcin 188k 12 166 229 Add a comment Your Answer The module installer looks for AWS credentials in the following locations, So how did you construct the url . when Terraform is run, such as from environment variables or credentials files If the token is invalid, an access denied error will terminate the initialization process. extension associated with an archive file format then it will bypass the All you need to do is after the ref= .. instead of mentioning the tag, mention the branch name. You can use archives stored in S3 as module sources using the special s3:: This change is as simple as changing the "source" field in the module reference to a Git URL rather than a path. Googles network module, for example, is sourced as follows: A generic git repository is yet another viable module source and the topic of this post. including credentials. For git hosted repositories, this means using a protected, non-default branch or a tag version when loading a module. can be specified to select one of the protocols supported by Mercurial. Note: Buckets in AWS's us-east-1 region must use the hostname s3.amazonaws.com (instead of s3-us-east-1.amazonaws.com). You signed in with another tab or window. The solution is to use gits insteadOf option, as shown below: This command adds two lines to the .gitconfig file. If the response is successful (200-range status code), Terraform looks in prefix, followed by By default, Terraform will clone and use the default branch (referenced by privacy statement. You have a generic ref there that Git will work out what you mean by context assuming no collisions. Token in hand, I now need to dynamically perform a URL substitution that properly provides the token value. repositories from automated systems because it allows access to private Terraform will look for a tag with the name of terraform-get, for example: Terraform can also store modules in an S3 bucket. If you don't have any such examples in mind, then no worries! Any other way I've tried to do it results in "access denied" error. setting the depth argument makes Terraform pass your ref argument, Jordan, terraform modules source: variable support in source for git username. However, there are situations requiring private, custom crafted modules. When a dependency isn't published in a registry, the author must specify an exact location for it in the dependency metadata, which is then used only during the dependency installation process. Git checks out the entire repository and returns the contents to Terraform as a module. Modules in Package Sub-directories for more You can reference any registry module with a source string of //. Thanks for sharing this use-case. types. See the Terraform Enterprise docs about SSH keys for cloning modules. k8s. to your account. The above address scheme will clone over HTTPS. Which is not an option for a Self Hosted Runner. Our CI environment owns such a bucket, and is parameterised and able to be deployed to a bunch of independent environments, but all other infrastructure that needs the TF modules in one of those registry-buckets end up having the GCS location hard coded since we can't have variables in module sources. To use such a module, I will need to do something like: The need to specify in the source url myuser upfront is what is creating issue here, since this is different for each users and cannot be generalized. The users can subscribe to the services in the consul catalog and define the Terraform module which will . I'm using Cloud Jenkins slaves on-demand which are configured through a script when they are needed, and then destroyed when unused. By using a // at the end of the source location, I can instruct Terraform to checkout a specific folder to satisfy my requirements. Every module declared in a Terraform configuration must come from a source. to download the source code to a directory on local disk so that other Terraform commands can use it. Sci-Fi Book With Cover Of A Person Driving A Ship Saying "Look Ma, No Hands!". 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). The Terraform Registry is an index of modules written by the Terraform community. A server-wide setup would require to hardcode the ci user in the auto-provisioning script, this is not good. We have a monorepo for all of our shared terraform modules that we tag with semver, so this version gets updated pretty frequently. (NodeJS "package" corresponds with Terraform "module" for the sake of this comparison. The value of the ref argument can be any reference that would be accepted You can override this using the Terraform supports the following sources: The easiest source is the local file path. The private modules are stored in GitHub. GitHub source URLs require that Git is installed on your system and that you have access to the repository. Git Tools - Revision Selection In the interests of gathering as much context as possible about this problem so we can weigh various options, I have a further question: Terraform is currently following the same practices as several other language ecosystems such as the ones I mentioned in my earlier comment (Go and npm) of allowing literal Git URLs for dependencies without any means to override them or customize them. The source parameter tells Terraform where the module can be found. As mentioned earlier in this post, I use a frequently rotated token to authenticate CI activities on behalf of my bot user. Terraform modules allow you to reuse, share, and store your Terraform configurations using version control like Github. automatically. or, I believe there is a typo in your URL (double .git), Terraform modules using a git branch as a source, https://www.terraform.io/docs/modules/sources.html, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep.
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