Environment Variables

Martin takes its configuration from command line parameters and the configuration file. A configuration file can read any environment variable you name in it, for example connection_string: ${DATABASE_URL}. See the configuration section for the substitution syntax. Martin itself reacts to the following variables.

Environment var	Description
`AWS_LAMBDA_RUNTIME_API`	If defined, connect to AWS Lambda to handle requests. The regular HTTP server is not used. See Running in AWS Lambda
`AWS_CONTAINER_CREDENTIALS_RELATIVE_URI` `AWS_CONTAINER_CREDENTIALS_FULL_URI` `AWS_CONTAINER_AUTHORIZATION_TOKEN_FILE` `AWS_WEB_IDENTITY_TOKEN_FILE` `AWS_ROLE_ARN` `AWS_ROLE_SESSION_NAME` `AWS_ENDPOINT_URL_STS`	Injected by ECS, Fargate and EKS to say where the task role's credentials come from. Used for S3-backed PMTiles sources unless `pmtiles.profile` or the matching `pmtiles.*` setting is configured. See PMTiles sources