In the meantime I would recommend using a replace method like described here #14214 (comment) to handle the perpetual diff. Use an early-bird release. The log group will be created approximately 15 minutes after you create a new Flow Log. VPC Flow Log allows to capture IP traffic for a specific network interface (ENI), subnet, or entire VPC. Sub modules are provided for creating individual vpc, subnets, and routes. Sign in If you need to have VPC Flow Logs for subnet or ENI, you have to manage it outside of this module with awsflowlog resource. The aws_flow_log Terraform resource is configured exactly according to the documentation. AWS VPC flow logs. 030-create-vpc.sh creates the VPC, subnets, instances and flow log collectors. This module is meant for use with Terraform 0.12. To create an Amazon S3 bucket for use with flow logs, see Create a Bucket in the … Have a question about this project? VPC Flow Logs is an AWS feature which makes it possible to capture IP traffic information traversing the network interfaces in the VPC. Provides a VPC/Subnet/ENI Flow Log to capture IP traffic for a specific network interface, subnet, or VPC. Log groups can be subscribed to a Kinesis Stream for analysis with AWS Lambda. 6 comments Labels. This account is configured the same way with AWS-KMS on the S3 bucket. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. aws_flow_log. A terraform module to set up your AWS account with the reasonably secure configuration baseline. I'm using Terraform and trying to set up automatic export of VPC flow logs into an S3 bucket in the same AWS account and region (ca-central-1) that has default encryption turned on with AWS-KMS (using a CMK). The aws_flow_log Terraform resource is configured exactly according to the documentation. # Terraform template to have VPC flow logs be sent to AWS Lambda: provider "aws" {region = "us-west-2"} resource "aws_cloudwatch_log_group" "vpc_flow_log_group" {name = "vpc-flow-log-group" retention_in_days = 1} resource "aws_flow_log" "vpc_flow_log" {# log_group_name needs to exist before hand Resource: aws_flow_log. Three years ago, we have been doing cloud infrastructures with Terraform 0.11. Sub modules are provided for creating individual vpc, subnets, and routes. The name of the IAM Role which VPC Flow Logs will use. You can access them via the CloudWatch Logs dashboard. string "default-vpc-flow-logs" no Terraform in the IBM Cloud Schematics service is used to create all of the resources except the flow log collector, which is created using the ibmcloud cli. Configuration in this directory creates a set of VPC resources with VPC Flow Logs enabled in different configurations: A terraform module to set up your AWS account with the reasonably secure configuration baseline. Published 7 days ago. This Terraform Module creates a VPC flow log. Turns out I was missing one very important line in my KMS key policy: Now it works fine, and my full policy looks like this: Click here to upload your image On this page This module supports enabling or disabling VPC Flow Logs for entire VPC. A flow log record represents a network flow in your VPC. privacy statement. Enabling VPC Flow Logs. to your account, This is new in Terraform 0.13 and did not happen with 0.12.29 and the AWS provider 3.20, I was not expecting to see this with #14214 having shipped in 3.0.0. See the modules directory for the various sub modules usage. By clicking “Sign up for GitHub”, you agree to our terms of service and 1&1 11 . breaking-change documentation enhancement service/cloudwatch service/cloudwatchlogs service/ec2. Conditional creation Sometimes you need to have a way to create VPC resources conditionally but Terraform does not allow to use count inside module block, so the solution is to specify argument create_vpc . string "VPC-Flow-Logs-Publish-Policy" no: vpc_log_group_name: The name of CloudWatch Logs group to which VPC Flow Logs are delivered. What else can I do to troubleshoot this? Sure thing @acdha! Compatibility. It's … AWS defines flow log as: VPC Flow Logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC. ... $ terraform import aws_flow_log.test_flow_log fl-1a2b3c4d Terraform 0.11.7 . AWS VPC provides features that help with security using security groups, network access control list, flow logs. After aws_flow_log. AWS defines flow log as: VPC Flow Logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC. When we create a VPC, we must specify a … Update: When the S3 bucket is reconfigured to use AES-256 as the default encryption (instead of KMS) the VPC flow logs get written normally. You signed in with another tab or window. Flow log data can be published to Amazon CloudWatch Logs or Amazon S3. By default, the record includes values for the different components of the IP flow, including the source, destination, and protocol. Take advantage of the different storage classes of S3, such as Amazon S3 Standard-Infrequent Access, or write custom data processing applications using other solutions, such as Amazon Athena. I believe the diff occurs b/c #14214 removed the trailing suffix in the cloudwatch_log_group resource, but not in the data-source and behind the scenes, the aws_flow_log resource automatically trims the configured log_destination value's :* suffix as seen here. terraform-aws-vpc / vpc-flow-logs.tf Go to file Go to file T; Go to line L; Copy path Cannot retrieve contributors at this time. This project is part of our comprehensive "SweetOps" approach towards DevOps. Already on GitHub? We’ll occasionally send you account related emails. 101 lines (77 sloc) 3.31 KB Raw Blame. If you need to have VPC Flow Logs for subnet or ENI, you have to manage it outside of this module with aws_flow_log resource. Terraform module for enabling flow logs for vpc and subnets. If the flow log captures data for a VPC, the flow log publishes flow log records for all of the network interfaces in the selected VPC. Terraform module for enabling flow logs for vpc and subnets. Both accounts seem to have the same configuration, so I can't figure out why it works in the sandbox, but fails in my terraformed account. Conditional creation Sometimes you need to have a way to create VPC resources conditionally but Terraform does not allow to use count inside module block, so the solution is to specify argument create_vpc . aws_flow_log. By default, each record captures a network internet protocol (IP) traffic flow (characterized by a 5-tuple on a per network interface basis) that occurs within an aggregation interval, also referred to as a capture window. Overview Documentation ... aws_ flow_ log aws_ internet_ gateway aws_ main_ route_ table_ association aws_ nat_ gateway aws_ network_ acl ... vpc_id - (Optional) The ID of the requester VPC of the specific VPC Peering Connection to retrieve. Terraform 0.11 . VPC flow logs don’t make sense without a VPC and therefore are good candidates to be included in a VPC module. hashicorp/terraform-provider-aws latest version 3.14.1. Default encryption is enabled and and Custom KMS arn is selected. Registry . The text was updated successfully, but these errors were encountered: Hi @acdha, thank you for creating this issue. The Flow Logs are saved into log groups in CloudWatch Logs. Enable VPC Flow Logs with the default VPC in all regions. That is exactly what I did and it’s working well. Even after trying many permutations of policies for KMS and the S3 bucket, the flow logger still always ends up in Access error status. The correct syntax for that would be aws.other-ca-central-1 (with a period rather than a dash), and in Terraform 0.12 you don't need to quote those references although Terraform 0.12 will accept it if you do, for compatibility with 0.11. – Martin Atkins Nov 6 '19 at 15:43 New Flow Logs will appear in the Flow Logs tab of the VPC dashboard. Example Usage ... $ terraform import aws_flow_log.test_flow_log fl-1a2b3c4d. And the result of aws ec2 describe-flow-logs: Curiously, it works fine in my second "sandbox" AWS account where I exclusively use the AWS web console, never Terraform. Protokolle werden an eine CloudWatch-Protokollgruppe gesendet. We will configure publishing of the collected data to Amazon CloudWatch Logs group but S3 can also be used as destination. just a follow-up question @acdha: did the workaround not behave as expected in Terraform 0.13 vs. 0.12? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. For more information, see Flow log records . After releasing 0.13, people faced a lot of instability and crashes. Bietet ein VPC / Subnetz / ENI-Ablaufprotokoll zum Erfassen des IP-Verkehrs für eine bestimmte Netzwerkschnittstelle, ein bestimmtes Subnetz oder eine bestimmte VPC. If you need to have VPC Flow Logs for subnet or ENI, you have to manage it outside of this module with aws_flow_log resource. ... Terraform thinks you want to … Most configurations are based on CIS Amazon Web Services Foundations v1.2.0. Conditional creation After the script completes, check out the flow log collector configuration in the IBM Cloud Console. Usage You can go to the examples folder, however the usage of the module could be like this in your own main.tf file: Update: When the S3 bucket is reconfigured to use AES-256 as the default encryption (instead of KMS) the VPC flow logs get written normally. So it's definitely a KMS problem. Terraform Aws Secure Baseline is a terraform module to set up your AWS account with the secure baseline configuration based on CIS Amazon Web Services Foundations.. Terraform Module Registry. The is_valid_vpc function uses the same feature.. See the modules directory for the various sub modules usage. Deliver VPC Flow Logs to S3 when you require simple, cost-effective archiving of your log events. Compatibility. The flow log will capture IP traffic information for a given VPC, subnet, or Elastic Network Interface (ENI). Successfully merging a pull request may close this issue. VPC Flow logs can be sent to either CloudWatch Logs or an S3 Bucket. So it's definitely a KMS problem. We waited literally years for Terraform 0.12 that brought for loops, dynamic expressions and HCL revamp, but we did not get promised iterations on modules, which were released with Terraform 0.13. Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for issue followers and do not help prioritize the request, If you are interested in working on this issue or have submitted a pull request, please leave a comment, Terraform would update the flog log once and not attempt to recreate it on every run. Please enable Javascript to use this application If you or someone who comes across this issue wants to submit a PR with the documentation update we'll be happy to review it 😄, I'm going to leave this issue open in the meantime as it can still be addressed in the data-source code but further down the line in the next major release 👍. VPC with enabled VPC flow log to S3 and CloudWatch logs. Most configurations are based on CIS Amazon Web Services Foundations v1.3.0 and AWS Foundational Security Best Practices v1.0.0. The logs can be published to Amazon CloudWatch Logs or an S3 bucket. Logs are sent to a CloudWatch Log Group or a S3 Bucket. Note to future self (and others): to have the aws_cloudwatch_log_group data source behave on-par with the resource's ARN handling, this would need to be handled in the next major release as it introduces a breaking-change. (max 2 MiB). Alternatively, our recommendation is to use Amazon S3, as this provides the easiest method of scalability and log … I'm at a loss here. The usage of lines such as resource = vpcs[_] Act as for loops, iterating overall each resource in the list. When you create a flow log, you can use the default format for the flow log record, or you can specify a custo… Proporciona un registro de flujo VPC / Subnet / ENI para capturar el tráfico de IP para una interfaz de red, subred o VPC específica. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy, 2020 Stack Exchange, Inc. user contributions under cc by-sa, https://devops.stackexchange.com/questions/11623/troubleshooting-vpc-flow-logs-with-an-s3-bucket-using-sse-kms-encryption-with-cm/11624#11624, Troubleshooting VPC flow logs with an S3 bucket using SSE-KMS encryption with CMK, Required CMK key policy for use with SSE-KMS buckets. Flow log data can be published to Amazon CloudWatch Logs or Amazon S3. This module is meant for use with Terraform 0.12. string "VPC-Flow-Logs-Publisher" no: vpc_iam_role_policy_name: The name of the IAM Role Policy which VPC Flow Logs will use. KMS key policy includes a statement that allows usage by VPC Flow logs as instructed by Required CMK key policy for use with SSE-KMS buckets. Flow logs can be configured to capture all traffic, only traffic that is accepted, or only traffic that is rejected. You can also provide a link from the web. It's definitely not hard to work around so I wonder whether this could be perhaps addressed by simply updating the documentation (it seems like more trouble than it'd be worth to add something like an accessor which trims it). CloudFormation, Terraform, and AWS CLI Templates: Enable VPC Flow Logs for an existing VPC, subnet or network interface. VPC Flow Log. terraform-aws-cloudwatch-flow-logs. This rule determines if a VPC is valid by ensure there is a flow log resource that references it. Flow Logs enables you to capture information about the IP traffic going to and from network interfaces in your VPC. S3 bucket policy includes statements to allow VPC flow logs delivery from delivery.logs.amazonaws.com as written in Publishing flow logs to Amazon S3. After you've created a flow log, you can retrieve and view its data in the chosen destination. The fugue.resources function allows all resources of both types to be collected.. 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Is part of our comprehensive `` SweetOps '' approach towards DevOps Stream for analysis with Lambda! Written in publishing flow Logs can be configured to capture IP traffic going to and from network interfaces in VPC... Interface, subnet, or only traffic that is exactly what I did and it’s well... Directory for the various sub modules usage contact its maintainers and the community capture all traffic only... Can retrieve and view its data in the list for creating individual VPC, subnet, or Elastic network (! A network flow in vpc flow logs terraform VPC creates the VPC, subnets, and... Updated successfully, but these errors were encountered: Hi @ acdha: did the workaround not behave expected... Record includes values for the various sub modules usage # 14214 ( )... Kb Raw Blame Logs dashboard published to Amazon S3 aws_flow_log Terraform resource is configured the same way with on. Meantime I would recommend using a replace method like described here # 14214 ( )! 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