Object Lambda Function Settings

This page documents environment variables for configuring MinIO to publish data to an HTTP webhook endpoint and trigger an Object Lambda function. See Transforms with Object Lambda for more complete documentation and tutorials on using these environment variables.

You can specify multiple webhook endpoints as Lambda targets by appending a unique identifier _FUNCTIONNAME for each Object Lambda function. For example, the following command sets two distinct Object Lambda webhook endpoints:

export MINIO_LAMBDA_WEBHOOK_ENABLE_myfunction="on"
export MINIO_LAMBDA_WEBHOOK_ENDPOINT_myfunction="http://webhook-1.example.net"
export MINIO_LAMBDA_WEBHOOK_ENABLE_yourfunction="on"
export MINIO_LAMBDA_WEBHOOK_ENDPOINT_yourfunction="http://webhook-2.example.net"

Important

Each configuration setting controls fundamental MinIO behavior and functionality. MinIO strongly recommends testing configuration changes in a lower environment, such as DEV or QA, before applying to production.

Environment Variables

MINIO_LAMBDA_WEBHOOK_ENABLE

Specify "on" to enable the Object Lambda webhook endpoint for a handler function.

Requires specifying MINIO_LAMBDA_WEBHOOK_ENDPOINT.

MINIO_LAMBDA_WEBHOOK_ENDPOINT: The HTTP endpoint of the lambda webhook for the handler function.

MINIO_LAMBDA_WEBHOOK_AUTH_TOKEN: Specify the opaque string or JWT authorization token to use for authenticating to the lambda webhook service.

Changed in version RELEASE.2023-06-23T20-26-00Z: MinIO redacts this value when returned as part of mc admin config get.

MINIO_LAMBDA_WEBHOOK_CLIENT_CERT: Specify the path to the client certificate to use for performing mTLS authentication to the lambda webhook service.

MINIO_LAMBDA_WEBHOOK_CLIENT_KEY: Specify the path to the private key to use for performing mTLS authentication to the lambda webhook service.