Hub documentation
Co-authored-by: jbdoumenjou <jb.doumenjou@gmail.com> Co-authored-by: Baptiste Mayelle <baptiste.mayelle@traefik.io>
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Ludovic Fernandez
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docs/content/traefik-hub/index.md
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docs/content/traefik-hub/index.md
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# Traefik Hub (Experimental)
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## Overview
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Once the Traefik Hub Experimental feature is enabled in Traefik,
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Traefik and its local agent communicate together.
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This agent can:
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* get the Traefik metrics to display them in the Traefik Hub UI
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* secure the Traefik routers
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* provide ACME certificates to Traefik
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* transfer requests from the SaaS Platform to Traefik (and then avoid the users to expose directly their infrastructure on the internet)
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!!! warning "Traefik Hub Entrypoints"
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When the Traefik Hub feature is enabled, Traefik exposes some services meant for the Traefik Hub Agent on dedicated entrypoints (on ports `9900` and `9901` by default).
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Given their sensitive nature, those services should not be publicly exposed.
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Also those dedicated entrypoints, regardless of how they are created (default, or user-defined), should not be used by anything other than the Hub Agent.
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!!! important "Learn More About Traefik Hub"
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This section is intended only as a brief overview for Traefik users who are not familiar with Traefik Hub.
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To explore all that Traefik Hub has to offer, please consult the [Traefik Hub Documentation](https://doc.traefik.io/traefik-hub).
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!!! Note "Prerequisites"
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* Traefik Hub is compatible with Traefik Proxy 2.7 or later.
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* The Traefik Hub Agent must be installed to connect to the Traefik Hub platform.
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* Activate this feature in the experimental section of the static configuration.
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!!! example "Minimal Static Configuration to Activate Traefik Hub for Docker"
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```yaml tab="File (YAML)"
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experimental:
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hub: true
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hub:
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tls:
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insecure: true
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metrics:
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prometheus:
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addRoutersLabels: true
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```
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```toml tab="File (TOML)"
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[experimental]
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hub = true
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[hub]
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[hub.tls]
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insecure = true
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[metrics]
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[metrics.prometheus]
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addRoutersLabels = true
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```
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```bash tab="CLI"
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--experimental.hub
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--hub.tls.insecure
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--metrics.prometheus.addrouterslabels
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```
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!!! example "Minimal Static Configuration to Activate Traefik Hub for Kubernetes"
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```yaml tab="File (YAML)"
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experimental:
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hub: true
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hub: {}
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metrics:
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prometheus:
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addRoutersLabels: true
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```
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```toml tab="File (TOML)"
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[experimental]
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hub = true
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[hub]
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[metrics]
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[metrics.prometheus]
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addRoutersLabels = true
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```
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```bash tab="CLI"
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--experimental.hub
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--hub
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--metrics.prometheus.addrouterslabels
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```
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## Configuration
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### Entrypoints
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#### `traefikhub-api`
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This entrypoint is used to communicate between the Hub agent and Traefik.
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It allows the Hub agent to create routing.
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This dedicated Traefik Hub entryPoint should not be used by anything other than Traefik Hub.
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The default port is `9900`.
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To change the port, you have to define an entrypoint named `traefikhub-api`.
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```yaml tab="File (YAML)"
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entryPoints:
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traefikhub-api: ":8000"
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```
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```toml tab="File (TOML)"
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[entryPoints.traefikhub-api]
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address = ":8000"
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```
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```bash tab="CLI"
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--entrypoints.traefikhub-api.address=:8000
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```
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#### `traefikhub-tunl`
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This entrypoint is used to communicate between Traefik Hub and Traefik.
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It allows to create secured tunnels.
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This dedicated Traefik Hub entryPoint should not be used by anything other than Traefik Hub.
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The default port is `9901`.
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To change the port, you have to define an entrypoint named `traefikhub-tunl`.
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```yaml tab="File (YAML)"
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entryPoints:
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traefikhub-tunl: ":8000"
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```
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```toml tab="File (TOML)"
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[entryPoints.traefikhub-tunl]
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address = ":8000"
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```
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```bash tab="CLI"
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--entrypoints.traefikhub-tunl.address=:8000
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```
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### `tls`
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_Optional, Default=None_
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This section is required when using the Hub agent for Docker.
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This section allows configuring mutual TLS connection between Traefik Proxy and the Traefik Hub Agent.
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The key and the certificate are the credentials for Traefik Proxy as a TLS client.
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The certificate authority authenticates the Traefik Hub Agent certificate.
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!!! note "Certificate Domain"
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The certificate must be valid for the `proxy.traefik` domain.
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!!! note "Certificates Definition"
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Certificates can be defined either by their content or their path.
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!!! note "Insecure Mode"
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The `insecure` option is mutually exclusive with any other option.
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```yaml tab="File (YAML)"
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hub:
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tls:
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ca: /path/to/ca.pem
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cert: /path/to/cert.pem
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key: /path/to/key.pem
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```
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```toml tab="File (TOML)"
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[hub.tls]
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ca= "/path/to/ca.pem"
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cert= "/path/to/cert.pem"
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key= "/path/to/key.pem"
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```
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```bash tab="CLI"
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--hub.tls.ca=/path/to/ca.pem
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--hub.tls.cert=/path/to/cert.pem
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--hub.tls.key=/path/to/key.pem
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```
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### `tls.ca`
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The certificate authority authenticates the Traefik Hub Agent certificate.
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```yaml tab="File (YAML)"
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hub:
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tls:
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ca: |-
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-----BEGIN CERTIFICATE-----
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MIIBcjCCARegAwIBAgIQaewCzGdRz5iNnjAiEoO5AzAKBggqhkjOPQQDAjASMRAw
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DgYDVQQKEwdBY21lIENvMCAXDTIyMDMyMTE2MTY0NFoYDzIxMjIwMjI1MTYxNjQ0
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WjASMRAwDgYDVQQKEwdBY21lIENvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
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ZaKYPj2G8Hnmju6jbHt+vODwKqNDVQMH5nxhtAgSUZS61mLWwZvvUhIYLNPwHz8a
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x8C7+cuihEC6Tzvn8DeGeKNNMEswDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoG
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CCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwFgYDVR0RBA8wDYILZXhhbXBsZS5jb20w
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CgYIKoZIzj0EAwIDSQAwRgIhAO8sucDGY+JOrNgQg1a9ZqqYvbxPFnYsSZr7F/vz
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aUX2AiEAilZ+M5eX4RiMFc3nlm9qVs1LZhV3dZW/u80/mPQ/oaY=
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-----END CERTIFICATE-----
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```
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```toml tab="File (TOML)"
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[hub.tls]
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ca = """-----BEGIN CERTIFICATE-----
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MIIBcjCCARegAwIBAgIQaewCzGdRz5iNnjAiEoO5AzAKBggqhkjOPQQDAjASMRAw
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DgYDVQQKEwdBY21lIENvMCAXDTIyMDMyMTE2MTY0NFoYDzIxMjIwMjI1MTYxNjQ0
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WjASMRAwDgYDVQQKEwdBY21lIENvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
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ZaKYPj2G8Hnmju6jbHt+vODwKqNDVQMH5nxhtAgSUZS61mLWwZvvUhIYLNPwHz8a
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x8C7+cuihEC6Tzvn8DeGeKNNMEswDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoG
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CCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwFgYDVR0RBA8wDYILZXhhbXBsZS5jb20w
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CgYIKoZIzj0EAwIDSQAwRgIhAO8sucDGY+JOrNgQg1a9ZqqYvbxPFnYsSZr7F/vz
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aUX2AiEAilZ+M5eX4RiMFc3nlm9qVs1LZhV3dZW/u80/mPQ/oaY=
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-----END CERTIFICATE-----"""
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```
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```bash tab="CLI"
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--hub.tls.ca=-----BEGIN CERTIFICATE-----
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MIIBcjCCARegAwIBAgIQaewCzGdRz5iNnjAiEoO5AzAKBggqhkjOPQQDAjASMRAw
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DgYDVQQKEwdBY21lIENvMCAXDTIyMDMyMTE2MTY0NFoYDzIxMjIwMjI1MTYxNjQ0
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WjASMRAwDgYDVQQKEwdBY21lIENvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
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ZaKYPj2G8Hnmju6jbHt+vODwKqNDVQMH5nxhtAgSUZS61mLWwZvvUhIYLNPwHz8a
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x8C7+cuihEC6Tzvn8DeGeKNNMEswDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoG
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CCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwFgYDVR0RBA8wDYILZXhhbXBsZS5jb20w
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CgYIKoZIzj0EAwIDSQAwRgIhAO8sucDGY+JOrNgQg1a9ZqqYvbxPFnYsSZr7F/vz
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aUX2AiEAilZ+M5eX4RiMFc3nlm9qVs1LZhV3dZW/u80/mPQ/oaY=
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-----END CERTIFICATE-----
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```
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### `tls.cert`
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The TLS certificate for Traefik Proxy as a TLS client.
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!!! note "Certificate Domain"
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The certificate must be valid for the `proxy.traefik` domain.
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```yaml tab="File (YAML)"
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hub:
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tls:
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cert: |-
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-----BEGIN CERTIFICATE-----
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MIIBcjCCARegAwIBAgIQaewCzGdRz5iNnjAiEoO5AzAKBggqhkjOPQQDAjASMRAw
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DgYDVQQKEwdBY21lIENvMCAXDTIyMDMyMTE2MTY0NFoYDzIxMjIwMjI1MTYxNjQ0
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WjASMRAwDgYDVQQKEwdBY21lIENvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
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ZaKYPj2G8Hnmju6jbHt+vODwKqNDVQMH5nxhtAgSUZS61mLWwZvvUhIYLNPwHz8a
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x8C7+cuihEC6Tzvn8DeGeKNNMEswDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoG
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CCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwFgYDVR0RBA8wDYILZXhhbXBsZS5jb20w
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CgYIKoZIzj0EAwIDSQAwRgIhAO8sucDGY+JOrNgQg1a9ZqqYvbxPFnYsSZr7F/vz
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aUX2AiEAilZ+M5eX4RiMFc3nlm9qVs1LZhV3dZW/u80/mPQ/oaY=
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-----END CERTIFICATE-----
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```
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```toml tab="File (TOML)"
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[hub.tls]
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cert = """-----BEGIN CERTIFICATE-----
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MIIBcjCCARegAwIBAgIQaewCzGdRz5iNnjAiEoO5AzAKBggqhkjOPQQDAjASMRAw
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DgYDVQQKEwdBY21lIENvMCAXDTIyMDMyMTE2MTY0NFoYDzIxMjIwMjI1MTYxNjQ0
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WjASMRAwDgYDVQQKEwdBY21lIENvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
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ZaKYPj2G8Hnmju6jbHt+vODwKqNDVQMH5nxhtAgSUZS61mLWwZvvUhIYLNPwHz8a
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x8C7+cuihEC6Tzvn8DeGeKNNMEswDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoG
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CCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwFgYDVR0RBA8wDYILZXhhbXBsZS5jb20w
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CgYIKoZIzj0EAwIDSQAwRgIhAO8sucDGY+JOrNgQg1a9ZqqYvbxPFnYsSZr7F/vz
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aUX2AiEAilZ+M5eX4RiMFc3nlm9qVs1LZhV3dZW/u80/mPQ/oaY=
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-----END CERTIFICATE-----"""
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```
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```bash tab="CLI"
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--hub.tls.cert=-----BEGIN CERTIFICATE-----
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MIIBcjCCARegAwIBAgIQaewCzGdRz5iNnjAiEoO5AzAKBggqhkjOPQQDAjASMRAw
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DgYDVQQKEwdBY21lIENvMCAXDTIyMDMyMTE2MTY0NFoYDzIxMjIwMjI1MTYxNjQ0
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WjASMRAwDgYDVQQKEwdBY21lIENvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
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ZaKYPj2G8Hnmju6jbHt+vODwKqNDVQMH5nxhtAgSUZS61mLWwZvvUhIYLNPwHz8a
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x8C7+cuihEC6Tzvn8DeGeKNNMEswDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoG
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CCsGAQUFBwMBMAwGA1UdEwEB/wQCMAAwFgYDVR0RBA8wDYILZXhhbXBsZS5jb20w
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CgYIKoZIzj0EAwIDSQAwRgIhAO8sucDGY+JOrNgQg1a9ZqqYvbxPFnYsSZr7F/vz
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aUX2AiEAilZ+M5eX4RiMFc3nlm9qVs1LZhV3dZW/u80/mPQ/oaY=
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-----END CERTIFICATE-----
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```
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### `tls.key`
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The TLS key for Traefik Proxy as a TLS client.
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```yaml tab="File (YAML)"
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hub:
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tls:
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key: |-
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-----BEGIN PRIVATE KEY-----
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MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgm+XJ3LVrTbbirJea
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O+Crj2ADVsVHjMuiyd72VE3lgxihRANCAARlopg+PYbweeaO7qNse3684PAqo0NV
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AwfmfGG0CBJRlLrWYtbBm+9SEhgs0/AfPxrHwLv5y6KEQLpPO+fwN4Z4
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-----END PRIVATE KEY-----
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```
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```toml tab="File (TOML)"
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[hub.tls]
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key = """-----BEGIN PRIVATE KEY-----
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MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgm+XJ3LVrTbbirJea
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O+Crj2ADVsVHjMuiyd72VE3lgxihRANCAARlopg+PYbweeaO7qNse3684PAqo0NV
|
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AwfmfGG0CBJRlLrWYtbBm+9SEhgs0/AfPxrHwLv5y6KEQLpPO+fwN4Z4
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-----END PRIVATE KEY-----"""
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```
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```bash tab="CLI"
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--hub.tls.key=-----BEGIN PRIVATE KEY-----
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MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgm+XJ3LVrTbbirJea
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O+Crj2ADVsVHjMuiyd72VE3lgxihRANCAARlopg+PYbweeaO7qNse3684PAqo0NV
|
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AwfmfGG0CBJRlLrWYtbBm+9SEhgs0/AfPxrHwLv5y6KEQLpPO+fwN4Z4
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-----END PRIVATE KEY-----
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```
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### `tls.insecure`
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_Optional, Default=false_
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Enables an insecure TLS connection that uses default credentials,
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and which has no peer authentication between Traefik Proxy and the Traefik Hub Agent.
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The `insecure` option is mutually exclusive with any other option.
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!!! warning "Security Consideration"
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Do not use this setup in production.
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This option implies sensitive data can be exposed to potential malicious third-party programs.
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```yaml tab="File (YAML)"
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hub:
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tls:
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insecure: true
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```
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```toml tab="File (TOML)"
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[hub.tls]
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insecure = true
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```
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```bash tab="CLI"
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--hub.tls.insecure=true
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```
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@ -135,6 +135,7 @@ nav:
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- 'Overview': 'middlewares/tcp/overview.md'
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- 'InFlightConn': 'middlewares/tcp/inflightconn.md'
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- 'IpWhitelist': 'middlewares/tcp/ipwhitelist.md'
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- 'Traefik Hub': 'traefik-hub/index.md'
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- 'Plugins & Traefik Pilot': 'plugins/index.md'
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- 'Operations':
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- 'CLI': 'operations/cli.md'
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