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# tf_aws_cloudfront | ||
Terraform module which creates AWS Cloudfront resources | ||
A Terraform module containing typical AWS CloudFront distribution. | ||
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## Assumptions | ||
* HTTPS traffic (so CF will offload HTTPS to HTTP) | ||
* You've uploaded an SSL certificate to AWS/IAM | ||
* Logging is created by default to separate S3 bucket | ||
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## Input Variables | ||
* `name` - [mandatory] name you will see in i.e. in tags. | ||
* `certificate_arn` - [mandatory] Existing certificate arn. | ||
* `domains` - list of CNAME's to be associated with the CF (can be empty). | ||
* `bucket_name` - S3 bucket name to be source for data served by CF. | ||
* `compress` - Whether you want CloudFront to automatically compress content for web requests that include Accept-Encoding: gzip in the request header. | ||
* `ipv6_enabled` - Whether the IPv6 is enabled for the distribution. | ||
* `comment` - Comment used in both `aws_cloudfront_origin_access_identity` and `aws_cloudfront_distribution`. | ||
* `log_include_cookies` - Specifies whether you want CloudFront to include cookies in access logs. | ||
* `log_bucket` - Name of the bucket to place CF access logs. | ||
* `log_prefix` - An optional string that you want CloudFront to prefix to the access log filenames for this distribution, for example, `cf_logs/.`. | ||
* `price_class` - The price class for this distribution. One of PriceClass_All, PriceClass_200, PriceClass_100 (default). | ||
* `viewer_protocol_policy` - Use this element to specify the protocol that users can use to access the files in the origin specified by TargetOriginId when a request matches the path pattern in PathPattern. One of allow-all, https-only, or redirect-to-https (default). | ||
* `allowed_methods` - Controls which HTTP methods CloudFront processes and forwards to your Amazon S3 bucket or your custom origin. | ||
* `cached_methods` - Controls whether CloudFront caches the response to requests using the specified HTTP methods. | ||
* `min_ttl` - The minimum amount of time that you want objects to stay in CloudFront caches before CloudFront queries your origin to see whether the object has been updated. | ||
* `max_ttl` - The maximum amount of time (in seconds) that an object is in a CloudFront cache before CloudFront forwards another request to your origin to determine whether the object has been updated. Only effective in the presence of Cache-Control max-age, Cache-Control s-maxage, and Expires headers. | ||
* `default_ttl` - The default amount of time (in seconds) that an object is in a CloudFront cache before CloudFront forwards another request in the absence of an Cache-Control max-age or Expires header. | ||
* `tags` - A mapping of tags to assign to the resource. By default `Name` is set. | ||
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## Outputs | ||
* cf_id - The identifier for the distribution. For example: EDFDVBD632BHDS5. | ||
* cf_arn - The ARN (Amazon Resource Name) for the distribution. For example: arn:aws:cloudfront::123456789012:distribution/EDFDVBD632BHDS5, where 123456789012 is your AWS account ID. | ||
* cf_status - The current status of the distribution. Deployed if the distribution's information is fully propagated throughout the Amazon CloudFront system. | ||
* active_trusted_signers - The key pair IDs that CloudFront is aware of for each trusted signer, if the distribution is set up to serve private content with signed URLs. | ||
* cf_domain_name - The domain name corresponding to the distribution. For example: d604721fxaaqy9.cloudfront.net. | ||
* cf_etag - The current version of the distribution's information. For example: E2QWRUHAPOMQZL. | ||
* cf_hosted_zone_id - The CloudFront Route 53 zone ID that can be used to route an Alias Resource Record Set to. This attribute is simply an alias for the zone ID Z2FDTNDATAQYW2. | ||
* s3_bucket_id - S3 bucket id | ||
* s3_bucket_arn - S3 bucket arn | ||
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## Usage example: | ||
``` | ||
module "cf_distro" { | ||
source = "github.com/terraform-community-modules/tf_aws_cf" | ||
name = "tf-${terraform.env}-my-cf" | ||
domains = ["whatever-${terraform.env}.${var.domain}"] | ||
certificate_arn = "arn:aws:acm:us-east-1:123456789123:certificate/11111111-2222-3333-4444-555555555555" | ||
bucket_name = "tf-${terraform.env}-my-cf-bucket" | ||
comment = "Managed by Terraform" | ||
log_include_cookies = "false" | ||
log_bucket = "tf-${terraform.env}-log-bucket-for-my-cf" | ||
allowed_methods = ["GET", "HEAD"] | ||
tags = { | ||
"Terraform" = "true" | ||
"Environment" = "${terraform.env}" | ||
} | ||
} | ||
``` | ||
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## Contributing | ||
Report issues/questions/feature requests on in the [Issues](https://github.com/terraform-community-modules/tf_aws_cf/issues) section. | ||
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Pull requests are welcome! Ideally create a feature branch and issue for every | ||
individual change you make. These are the steps: | ||
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1. Fork the repo. | ||
2. Create your feature branch from master (`git checkout -b my-new-feature`). | ||
4. Commit your awesome changes (`git commit -am 'Added some feature'`). | ||
5. Push to the branch (`git push origin my-new-feature`). | ||
6. Create a new Pull Request and tell us about your changes. | ||
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## Change log | ||
For description of changes please refer to commit descriptions | ||
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## Authors | ||
Created and maintained by [Marek Kwasecki](https://github.com/kwach) - marek.kwasecki@radpoint.pl. | ||
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## License | ||
Apache v2.0 Licensed. See [LICENSE](LICENSE) for full details. | ||
|
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# --- S3 bucket --- | ||
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data "aws_iam_policy_document" "s3_policy_cf_bucket" { | ||
statement { | ||
actions = ["s3:GetObject"] | ||
resources = ["arn:aws:s3:::${var.bucket_name}/*"] | ||
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principals { | ||
type = "AWS" | ||
identifiers = ["${aws_cloudfront_origin_access_identity.origin_access_identity.iam_arn}"] | ||
} | ||
} | ||
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statement { | ||
actions = ["s3:ListBucket"] | ||
resources = ["arn:aws:s3:::${var.bucket_name}"] | ||
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principals { | ||
type = "AWS" | ||
identifiers = ["${aws_cloudfront_origin_access_identity.origin_access_identity.iam_arn}"] | ||
} | ||
} | ||
} | ||
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resource "aws_s3_bucket" "bucket" { | ||
bucket = "${var.bucket_name}" | ||
acl = "private" | ||
policy = "${data.aws_iam_policy_document.s3_policy_cf_bucket.json}" | ||
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tags = "${merge("${var.tags}", map("Name", format("%s-bucket", var.name)))}" | ||
} | ||
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# --- CloudFront --- | ||
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resource "aws_cloudfront_origin_access_identity" "origin_access_identity" { | ||
comment = "access-identity-${var.name}" | ||
} | ||
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resource "aws_s3_bucket" "log_bucket" { | ||
bucket = "${var.log_bucket}" | ||
#policy = "${data.aws_iam_policy_document.s3_policy_cf_logs.json}" | ||
force_destroy = true | ||
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tags = "${merge(var.tags, map("Name", format("%s", var.log_bucket)))}" | ||
} | ||
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resource "aws_cloudfront_distribution" "cf" { | ||
enabled = "true" | ||
is_ipv6_enabled = "${var.ipv6_enabled}" | ||
comment = "${var.comment}" | ||
default_root_object = "index.html" | ||
price_class = "${var.price_class}" | ||
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logging_config = { | ||
include_cookies = "${var.log_include_cookies}" | ||
bucket = "${var.log_bucket}.s3.amazonaws.com" | ||
prefix = "${var.log_prefix}" | ||
} | ||
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aliases = ["${var.domains}"] | ||
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origin { | ||
domain_name = "${aws_s3_bucket.bucket.bucket_domain_name}" | ||
origin_id = "${var.bucket_name}" | ||
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s3_origin_config { | ||
origin_access_identity = "${aws_cloudfront_origin_access_identity.origin_access_identity.cloudfront_access_identity_path}" | ||
} | ||
} | ||
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viewer_certificate { | ||
acm_certificate_arn = "${var.certificate_arn}" | ||
ssl_support_method = "sni-only" | ||
minimum_protocol_version = "TLSv1" | ||
} | ||
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default_cache_behavior { | ||
allowed_methods = "${var.allowed_methods}" | ||
cached_methods = "${var.cached_methods}" | ||
target_origin_id = "${var.bucket_name}" | ||
compress = "${var.compress}" | ||
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forwarded_values { | ||
query_string = false | ||
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cookies { | ||
forward = "none" | ||
} | ||
} | ||
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viewer_protocol_policy = "${var.viewer_protocol_policy}" | ||
min_ttl = "${var.min_ttl}" | ||
default_ttl = "${var.default_ttl}" | ||
max_ttl = "${var.max_ttl}" | ||
} | ||
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"restrictions" { | ||
"geo_restriction" { | ||
restriction_type = "none" | ||
} | ||
} | ||
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tags = "${merge("${var.tags}", map("Name", format("%s", var.name)))}" | ||
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depends_on = ["aws_s3_bucket.log_bucket"] | ||
} |
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