Shipping logs from Cloudwatch into Logz.io with Firehose Delivery Stream

This project deploys instrumentation that allows shipping Cloudwatch logs to Logz.io, with a Firehose Delivery Stream.

Overview

This project will use a Cloudformation template to create a Stack that deploys:

• Firehose Delivery Stream with Logz.io as the stream's destination.
• Lambda function that adds Subscription Filters to Cloudwatch Log Groups, as defined by user's input.
• Roles, log groups, and other resources that are necessary for this instrumentation.

Instructions

To deploy this project, click the button that matches the region you wish to deploy your Stack to:

Region	Deployment
us-east-1
us-east-2
us-west-1
us-west-2
eu-central-1
eu-central-2
eu-north-1
eu-west-1
eu-west-2
eu-west-3
eu-south-1
eu-south-2
sa-east-1
ap-northeast-1
ap-northeast-2
ap-northeast-3
ap-south-1
ap-south-2
ap-southeast-1
ap-southeast-2
ap-southeast-3
ap-southeast-4
ap-east-1
ca-central-1
ca-west-1
af-south-1
me-south-1
me-central-1
il-central-1

1. Specify stack details

Specify the stack details as per the table below, check the checkboxes and select Create stack.

Parameter	Description	Required/Default
logzioToken	The token of the account you want to ship logs to.	Required
logzioListener	Listener host.	Required
logzioType	The log type you'll use with this Lambda. This can be a built-in log type, or a custom log type.	logzio_firehose
services	A comma-seperated list of services you want to collect logs from. Supported options are: apigateway, rds, cloudhsm, cloudtrail, codebuild, connect, elasticbeanstalk, ecs, eks, aws-glue, aws-iot, lambda, macie, amazon-mq, batch	-
customLogGroups	A comma-separated list of custom log groups to collect logs from, or the ARN of the Secret parameter (explanation below) storing the log groups list if it exceeds 4096 characters. Note: You can also specify a prefix of the log group names by using a wildcard at the end (e.g., prefix*). This will match all log groups that start with the specified prefix	-
useCustomLogGroupsFromSecret	If you want to provide list of customLogGroups which exceeds 4096 characters, set to true and configure your customLogGroups as defined below.	false
triggerLambdaTimeout	The amount of seconds that Lambda allows a function to run before stopping it, for the trigger function.	60
triggerLambdaMemory	Trigger function's allocated CPU proportional to the memory configured, in MB.	512
triggerLambdaLogLevel	Log level for the Lambda function. Can be one of: debug, info, warn, error, fatal, panic	info
httpEndpointDestinationIntervalInSeconds	The length of time, in seconds, that Kinesis Data Firehose buffers incoming data before delivering it to the destination	60
httpEndpointDestinationSizeInMBs	The size of the buffer, in MBs, that Kinesis Data Firehose uses for incoming data before delivering it to the destination	5

⚠️ Important note ⚠️

AWS limits every log group to have up to 2 subscription filters. If your chosen log group already has 2 subscription filters, the trigger function won't be able to add another one.

Guide if customLogGroups list exceeds 4096 characters limit

Custom Log Group list exceeds 4096 characters limit

If your customLogGroups list exceeds the 4096 characters limit, follow the below steps:

1. Open AWS Secret Manager
2. Click Store a new secret
   • Choose Other type of secret
   • For key use logzioCustomLogGroups
   • In value store your comma-separated custom log groups list
   • Name your secret, for example as LogzioCustomLogGroups
   • Copy the new secret's ARN
3. In your stack, Set:
   • customLogGroups to your secret ARN that you copied in step 2
   • useCustomLogGroupsFromSecret to true

2. Send logs

Give the stack a few minutes to be deployed.

Once new logs are added to your chosen log group, they will be sent to your Logz.io account.

⚠️ Important note ⚠️

If you've used the services field, you'll have to wait 6 minutes before creating new log groups for your chosen services. This is due to cold start and custom resource invocation, that can cause the Lambda to behave unexpectedly.

Changelog:

• 0.3.0:
  • Support prefixes in customLogGroups via wildcard
  • Upgrade go 1.19 >> 1.22
  • Parallelized subscription filter updates to improve performance
• 0.2.1: Add support for aws-batch service.
• 0.2.0: Option to provide customLogGroups exceeding 4KB.
• 0.1.0: Introduced the ability to directly update service and custom log parameters within the stack.
• 0.0.2: Fix for RDS service - look for prefix /aws/rds/
• 0.0.1: Initial release.