ElasticSpotEvict-Logger

Lambda for Logging Spot Instance Evictions to Elasticsearch

This is a Golang code snippet that provides a lambda function that logs spot instance evictions to Elasticsearch. Amazon sends a 2-minute termination notice before a spot instance is taken away. This lambda function provides visibility into the logs for the same by logging the event details to Elasticsearch.

Usage

This code can be used as a standalone lambda function or integrated into an existing AWS infrastructure.

Before using this code, please ensure that you have the necessary permissions to create a lambda function and to access Elasticsearch.

Configuration

This lambda function requires the following configuration:

• AWS credentials with permissions to create and run a lambda function
• Access to an Elasticsearch cluster with the necessary permissions to create and update indexes.

In addition, the following parameters need to be defined in the code:

• secopsEsUrl: The URL for the Elasticsearch instance.
• esIndex: The name of the Elasticsearch index to be created. The Elasticsearch instance URL and the index name can be modified as required.

lambda.tf

• Make sure to update the lambda.tf file and add all the necessary config mainly for security_group_ids and subnet_ids.

This code also assumes that the AWS credentials are stored as secure string parameters in the AWS SSM Parameter Store. The code retrieves the credentials from SSM during runtime.