# Function Config Vars

There are three ways to get configuration variables into a function, all of which will be available as environment variables.
These are ordered in order of preference, the later ones overriding the previous ones.

## 1. Application level configuration

```sh
fn apps config set myapp LOG_LEVEL debug
```

## 2. Function configuration from func.yaml

See [Function file](../function-file.md) for more info.

## 3. Route level configuration

```sh
fn routes config set myapp hello2 LOG_LEVEL info
```