> ## Documentation Index
> Fetch the complete documentation index at: https://zenml.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# System Environmental Variables

> How to control ZenML behavior with environmental variables

There are a few pre-defined environmental variables that can be used to control the behavior of ZenML. See the list below with default values and options:

Choose from `INFO`, `WARN`, `ERROR`, `CRITICAL`, `DEBUG`:

```sh
ZENML_LOGGING_VERBOSITY=INFO
```

Explicit path to the ZenML repository:

```sh
ZENML_REPOSITORY_PATH
```

Setting to `false` disables analytics:

```sh
ZENML_ANALYTICS_OPT_IN=true
```

Setting to `true` switches to developer mode:

```sh
ZENML_DEBUG=false
```

Setting the `ZENML_ACTIVE_STACK_ID` to a specific UUID will make the corresponding stack the active stack:

```sh
ZENML_ACTIVE_STACK_ID=
```

When `true`, this prevents a pipeline from executing:

```sh
ZENML_PREVENT_PIPELINE_EXECUTION=false
```

Set to `false` to disable the [rich](https://github.com/Textualize/rich) traceback:

```sh
ZENML_ENABLE_RICH_TRACEBACK=true
```

Path to global ZenML config:

```sh
ZENML_CONFIG_PATH
```

Setting to `false` disables integrations logs suppression:

```sh
ZENML_SUPPRESS_LOGS=false
```