terraform-aws-logdna-cloudwatch

Terraform Module to deploy the LogDNA Cloudwatch Lambda

A terraform module for deploying the LogDNA log integration lambda as described here: https://github.com/logdna/aws-cloudwatch

This module

• deploys the labmda from the LogDNA Repo
• Creates the required IAM resources

---

Required

• service_identifier - service_identifier - Unique identifier for the app, used in naming resources. (ex: LogDNA-dev )
• logdna_key - LogDNA Ingestion Key

Optional

• logdna_hostname - LOGDNA_HOSTNAME Alternative Host Name - NOT YET Implemented
• logdna_tags - List of tags to add to log DNA, current region is always added, region is always added to the array
• reserved_concurrent_executions - Number of reserved concurrent executions (default 10)
• url - URL to script content. (Defaults to GitHub Master : https://raw.githubusercontent.com/logdna/aws-cloudwatch/master/logdna_cloudwatch.py)

Usage

module "logdna` -
  source             = "github.com/asicsdigital/terraform-aws-logdna-cloudwatch.git"
  service_identifier = "LogDNA-dev"
  logdna_key         = "secret_key"
}

resource "aws_cloudwatch_log_subscription_filter" "logdna_lambdafunction_logfilter` -
  name            = "test_lambdafunction_logfilter"
  log_group_name  = "some-log-group-name"
  filter_pattern  = "" # This is required, but can be empty
  destination_arn = "${module.logdna.lambda_arn}"
}

resource "aws_lambda_permission" "allow_cloudwatch` -
  statement_id   = "AllowExecutionFromCloudWatch-${module.logdna.function_name}-${data.aws_region.current.name}"
  action         = "lambda:InvokeFunction"
  function_name  = "${module.logdna.function_name}"
  principal      = "logs.amazonaws.com"
  source_arn     = "arn:aws:logs:us-east-1:123456789012:log-group:some-log-group-name:*"
}

Outputs

• script_body - Raw content of the script.
• lambda_arn - arn of the aws_lambda_function resource
• lambda_role_arn - arn of the aws_iam_role resource
• function_name - function name of the aws_lambda_function resource

Authors

Tim Hartmann

License

MIT License