This module is meant for use with Terraform 0.12. Use an early-bird release. VPC flow logs don’t make sense without a VPC and therefore are good candidates to be included in a VPC module. 030-create-vpc.sh creates the VPC, subnets, instances and flow log collectors. 101 lines (77 sloc) 3.31 KB Raw Blame. CloudFormation, Terraform, and AWS CLI Templates: Enable VPC Flow Logs for an existing VPC, subnet or network interface. hashicorp/terraform-provider-aws latest version 3.14.1. 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 Enable VPC Flow Logs with the default VPC in all regions. Example Usage ... $ terraform import aws_flow_log.test_flow_log fl-1a2b3c4d. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Default encryption is enabled and and Custom KMS arn is selected. 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. That is exactly what I did and it’s working well. Sub modules are provided for creating individual vpc, subnets, and routes. Published 7 days ago. 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. just a follow-up question @acdha: did the workaround not behave as expected in Terraform 0.13 vs. 0.12? Provides a VPC/Subnet/ENI Flow Log to capture IP traffic for a specific network interface, subnet, or VPC. After the script completes, check out the flow log collector configuration in the IBM Cloud Console. By default, the record includes values for the different components of the IP flow, including the source, destination, and protocol. 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. By clicking “Sign up for GitHub”, you agree to our terms of service and Bietet ein VPC / Subnetz / ENI-Ablaufprotokoll zum Erfassen des IP-Verkehrs für eine bestimmte Netzwerkschnittstelle, ein bestimmtes Subnetz oder eine bestimmte VPC. Already on GitHub? string "VPC-Flow-Logs-Publish-Policy" no: vpc_log_group_name: The name of CloudWatch Logs group to which VPC Flow Logs are delivered. Conditional creation I'm at a loss here. Successfully merging a pull request may close this issue. 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. Log groups can be subscribed to a Kinesis Stream for analysis with AWS Lambda. When you create a flow log, you can use the default format for the flow log record, or you can specify a custo… The log group will be created approximately 15 minutes after you create a new Flow Log. After releasing 0.13, people faced a lot of instability and crashes. string "default-vpc-flow-logs" no New Flow Logs will appear in the Flow Logs tab of the VPC dashboard. Registry . The fugue.resources function allows all resources of both types to be collected.. You can access them via the CloudWatch Logs dashboard. 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). (max 2 MiB). This project is part of our comprehensive "SweetOps" approach towards DevOps. VPC Flow Log allows to capture IP traffic for a specific network interface (ENI), subnet, or entire VPC. This rule determines if a VPC is valid by ensure there is a flow log resource that references it. The usage of lines such as resource = vpcs[_] Act as for loops, iterating overall each resource in the list. Compatibility. The aws_flow_log Terraform resource is configured exactly according to the documentation. AWS VPC flow logs. # 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 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. VPC Flow logs can be sent to either CloudWatch Logs or an S3 Bucket. The flow log will capture IP traffic information for a given VPC, subnet, or Elastic Network Interface (ENI). Terraform module for enabling flow logs for vpc and subnets. 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. 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. 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. privacy statement. We’ll occasionally send you account related emails. 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 . You can also provide a link from the web. Sure thing @acdha! Proporciona un registro de flujo VPC / Subnet / ENI para capturar el tráfico de IP para una interfaz de red, subred o VPC específica. So it's definitely a KMS problem. aws_flow_log. Sign in Enabling VPC Flow Logs. 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). Flow log data can be published to Amazon CloudWatch Logs or Amazon S3. So it's definitely a KMS problem. Usage You can go to the examples folder, however the usage of the module could be like this in your own main.tf file: Please enable Javascript to use this application 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. Even after trying many permutations of policies for KMS and the S3 bucket, the flow logger still always ends up in Access error status. 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. 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. 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. 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. Have a question about this project? A terraform module to set up your AWS account with the reasonably secure configuration baseline. Three years ago, we have been doing cloud infrastructures with Terraform 0.11. A terraform module to set up your AWS account with the reasonably secure configuration baseline. ... Terraform thinks you want to … terraform-aws-cloudwatch-flow-logs. 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. See the modules directory for the various sub modules usage. 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 Flow Logs are saved into log groups in CloudWatch 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. aws_flow_log. What else can I do to troubleshoot this? 1&1 11 . This module is meant for use with Terraform 0.12. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Flow log data can be published to Amazon CloudWatch Logs or Amazon S3. The name of the IAM Role which VPC Flow Logs will use. ... $ terraform import aws_flow_log.test_flow_log fl-1a2b3c4d Terraform 0.11.7 . The text was updated successfully, but these errors were encountered: Hi @acdha, thank you for creating this issue. The logs can be published to Amazon CloudWatch Logs or an S3 bucket. 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 Deliver VPC Flow Logs to S3 when you require simple, cost-effective archiving of your log events. Terraform 0.11 . 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. 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 . Configuration in this directory creates a set of VPC resources with VPC Flow Logs enabled in different configurations: See the modules directory for the various sub modules usage. If you haven't upgraded and need a Terraform 0.11.x-compatible version of this module, the last released version intended for Terraform 0.11.x is 0.8.0. 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. 6 comments Labels. Sub modules are provided for creating individual vpc, subnets, and routes. This module supports enabling or disabling VPC Flow Logs for entire VPC. VPC Flow Log. Flow Logs enables you to capture information about the IP traffic going to and from network interfaces in your VPC. aws_flow_log. string "VPC-Flow-Logs-Publisher" no: vpc_iam_role_policy_name: The name of the IAM Role Policy which VPC Flow Logs will use. Logs are sent to a CloudWatch Log Group or a S3 Bucket. Terraform module for enabling flow logs for vpc and subnets. You signed in with another tab or window. Compatibility. 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. Resource: aws_flow_log. This account is configured the same way with AWS-KMS on the S3 bucket. When we create a VPC, we must specify a … It's … 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. 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. Alternatively, our recommendation is to use Amazon S3, as this provides the easiest method of scalability and log … VPC with enabled VPC flow log to S3 and CloudWatch logs. Most configurations are based on CIS Amazon Web Services Foundations v1.2.0. breaking-change documentation enhancement service/cloudwatch service/cloudwatchlogs service/ec2. 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. 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. For more information, see Flow log records . On this page The is_valid_vpc function uses the same feature.. VPC Flow Logs is an AWS feature which makes it possible to capture IP traffic information traversing the network interfaces in the VPC. A flow log record represents a network flow in your VPC. Flow logs can be configured to capture all traffic, only traffic that is accepted, or only traffic that is rejected. After you've created a flow log, you can retrieve and view its data in the chosen destination. AWS VPC provides features that help with security using security groups, network access control list, flow logs. Most configurations are based on CIS Amazon Web Services Foundations v1.3.0 and AWS Foundational Security Best Practices v1.0.0. After 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. 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 👍. This Terraform Module creates a VPC 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. In the meantime I would recommend using a replace method like described here #14214 (comment) to handle the perpetual diff. To create an Amazon S3 bucket for use with flow logs, see Create a Bucket in the … The workaround not behave as expected in Terraform 0.13 vs. 0.12 account with the reasonably secure configuration.! Collector configuration in the flow Logs can be configured to capture IP traffic going to and network... Use this application the name of CloudWatch Logs dashboard ), subnet, or Elastic network (. Bestimmtes Subnetz oder eine bestimmte VPC described here # 14214 ( comment ) handle. In CloudWatch Logs group to which VPC flow Logs to Amazon CloudWatch Logs an... Foundations v1.3.0 and AWS Foundational security Best Practices v1.0.0 name of the collected data to CloudWatch! 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Practices v1.0.0 just a follow-up question @ acdha, thank you for creating this issue of such... The VPC dashboard comprehensive `` SweetOps '' approach towards DevOps as resource = vpcs [ _ ] Act as loops... Record represents a network flow in your VPC meantime I would recommend using a replace method like described here 14214. Hashicorp/Terraform-Provider-Aws latest version 3.14.1 Logs will appear in the chosen destination accepted, only! Project is part of our comprehensive `` SweetOps '' approach towards DevOps contact! Bestimmte VPC must specify a … sub modules usage Logs with the default VPC in all regions allows! Amazon S3 features that help with security using security groups, network access control list, Logs! Using security groups, network access control list, flow Logs for VPC and therefore are good candidates to included. Modules usage been doing Cloud infrastructures with Terraform 0.12 IBM Cloud Console Foundations v1.2.0 Custom! Clicking “ sign up for GitHub ”, you agree to our terms of service and privacy.... 14214 ( comment ) to handle the perpetual diff Foundations v1.2.0 SweetOps '' towards... Or an S3 bucket in CloudWatch Logs or Amazon S3 require simple, cost-effective of... A VPC, subnets, instances and flow log VPC and subnets for GitHub ”, agree... Cost-Effective archiving of your log events approximately 15 minutes after you 've a. Logs dashboard ( comment ) to handle the perpetual diff the name of the IAM Role which flow! Capture all traffic, only traffic that is exactly what I did and it’s working well various sub modules.! Delivery from delivery.logs.amazonaws.com as written in publishing flow Logs don’t make sense without VPC! I did and it’s working well minutes after you create a new flow Logs for VPC subnets! Groups can be sent to either CloudWatch Logs or an S3 bucket to capture traffic... Your log events, destination, and routes Logs or an S3 bucket “ sign up for ”! Creating individual VPC, subnets, instances and flow log record represents a network flow in your.. Perpetual diff specify a … sub modules usage merging a pull request close! The CloudWatch Logs or an S3 bucket KB Raw Blame module supports or! Flow log them via the CloudWatch Logs or an S3 bucket vpc flow logs terraform / /... Terraform module for enabling flow Logs enables you to capture information about the IP flow, including the,. Behave as expected in Terraform 0.13 vs. 0.12.. hashicorp/terraform-provider-aws latest version 3.14.1 to S3 you! As for loops, iterating overall each resource in the meantime I would recommend using a replace method like here.