# System-owned environment variables

The following environment variables are managed by Enterprise Gateway and listed here for completeness.

```{warning}
Manually setting these variables could adversely affect operations.
```

```text
  EG_DOCKER_MODE
    Docker only.  Used by launch_docker.py to determine if the kernel container
    should be created using the swarm service API or the regular docker container
    API.  Enterprise Gateway sets this value depending on whether the kernel is
    using the DockerSwarmProcessProxy or DockerProcessProxy.

  EG_RESPONSE_ADDRESS
    This value is set during each kernel launch and resides in the environment of
    the kernel launch process. Its value represents the address to which the remote
    kernel's connection information should be sent.  Enterprise Gateway is listening
    on that socket and will associate that connnection information with the responding
    kernel.
```