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update review date and punctuations #5734

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Jun 18, 2024
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update review date and punctuations #5734

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8 changes: 4 additions & 4 deletions runbooks/source/analyze-vpc-flow-logs.html.md.erb
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---
title: Analyze VPC Flow Logs
weight: 219
last_reviewed_on: 2023-12-14
last_reviewed_on: 2024-06-17
review_in: 6 months
---

# <%= current_page.data.title %>

Cloud Platform `live-1` VPC is connected to various other MoJ AWS accounts VPC using Transit Gateway. In order to debug network connectivity issues
Cloud Platform `live-1` VPC is connected to various MoJ AWS accounts VPCs using Transit Gateway. In order to debug network connectivity issues
that are coming to/from Cloud Platform VPC, the VPC flow logs are enabled. These logs are stored in an S3 bucket and can be analyzed using Athena when needed.

The steps involve a pointy-clicky exercise to generate Athena integration by creating a CloudFormation stack using a template and use that as a datasource in Athena
The steps involve a pointy-clicky exercise to generate Athena integration by creating a CloudFormation stack using a template and use that as a datasource in Athena.
Follow the steps as mentioned in the blog: [AWS blog - Analyze VPC Flow Logs with point-and-click Amazon Athena integration](https://aws.amazon.com/blogs/networking-and-content-delivery/analyze-vpc-flow-logs-with-point-and-click-amazon-athena-integration/).

Things to note:
- When creating a CloudFormation template, use the `Partition: Daily` option. This will create a partition for each day and will make it easier to query the logs for a specific day.
- Provide Partition start date and end date closer when the issue was observed. The duration is limited to 20 days
- Create two s3 buckets one for CloudFormation template and and another one to store the Athena query results which you will provide when creating the CloudFormation stack.
- Create two s3 buckets: one for CloudFormation template and another to store the Athena query results which you will provide when creating the CloudFormation stack.
- When the flow logs are downloaded and the user has investigated the issue, delete the created s3 buckets for CloudFormation template and Athena query results and the CloudFormation stack.
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