Configuration in Traefik can refer to two different things:
- The fully dynamic routing configuration (referred to as the _dynamic configuration_)
- The startup configuration (referred to as the _static configuration_)
Elements in the _static configuration_ set up connections to [providers](../../providers/overview/) and define the [entrypoints](../../routing/entrypoints/) Traefik will listen to (these elements don't change often).
The _dynamic configuration_ contains everything that defines how the requests are handled by your system.
This configuration can change and is seamlessly hot-reloaded, without any request interuption or connection loss.
Traefik gets its _dynamic configuration_ from [providers](../providers/overview.md): whether an orchestrator, a service registry, or a plain old configuration file. Since this configuration is specific to your infrastructure choices, we invite you to refer to the [dedicated section of this documentation](../providers/overview.md).
In the [Quick Start example](../getting-started/quick-start.md), the dynamic configuration comes from docker in the form of labels attached to your containers.
!!! Note
HTTPS Certificates also belong to the dynamic configuration. You can add / update / remove them without restarting your Traefik instance.
## The Static Configuration
There are three different locations where you can define static configuration options in Traefik:
- In a key-value store
- In the command-line arguments
- In a configuration file
If you don't provide a value for a given option, default values apply.
!!! important "Precedence Order"
The following precedence order applies for configuration options: key-value > command-line > configuration file.
It means that arguments override configuration file, and key-value store overrides arguments.
!!! important "Default Values"
Some root options are enablers: they set default values for all their children.
For example, the `--providers.docker` option enables the docker provider.
Once positioned, this option sets (and resets) all the default values under the root `providers.docker`.
If you define child options using a lesser precedence configuration source, they will be overwritten by the default values.
### Configuration File
At startup, Traefik searches for a file named `traefik.toml` in `/etc/traefik/`, `$HOME/.traefik/`, and `.` (_the working directory_).
You can override this using the `configFile` argument.
```bash
traefik --configFile=foo/bar/myconfigfile.toml
```
### Arguments
Use `traefik --help` to get the list of the available arguments.
### Key-Value Stores
Traefik supports several Key-value stores:
- [Consul](https://consul.io)
- [etcd](https://coreos.com/etcd/)
- [ZooKeeper](https://zookeeper.apache.org/)
- [boltdb](https://github.com/boltdb/bolt)
## Available Configuration Options
All the configuration options are documented in their related section.
You can browse the available features in the menu, the [providers](../providers/overview.md), or the [routing section](../routing/overview.md) to see them in action.
