FunctionDefaultExecutionConfig - Amazon IoT Greengrass
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Amazon IoT Greengrass Version 1 entered the extended life phase on June 30, 2023. For more information, see the Amazon IoT Greengrass V1 maintenance policy. After this date, Amazon IoT Greengrass V1 won't release updates that provide features, enhancements, bug fixes, or security patches. Devices that run on Amazon IoT Greengrass V1 won't be disrupted and will continue to operate and to connect to the cloud. We strongly recommend that you migrate to Amazon IoT Greengrass Version 2, which adds significant new features and support for additional platforms.

FunctionDefaultExecutionConfig

{
"IsolationMode": "GreengrassContainer|NoContainer",
"RunAs": {
  "Uid": 1001,
  "Gid": 1002
}
}
FunctionExecutionConfig

Configuration information that specifies how a Lambda function runs.

type: object

IsolationMode

Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

type: string

enum: ["GreengrassContainer", "NoContainer"]

RunAs

Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. To minimize the risk of unintended changes or malicious attacks, we recommend that you avoid running as root unless absolutely necessary. To run as root, you must update config.json in greengrass-root/config to set allowFunctionsToRunAsRoot to yes.

type: object

Uid

The user ID whose permissions are used to run a Lambda function.

type: integer

Gid

The group ID whose permissions are used to run a Lambda function.

type: integer