121 lines
3.6 KiB
Markdown
121 lines
3.6 KiB
Markdown
---
|
|
title: "Traefik Errors Documentation"
|
|
description: "In Traefik Proxy, the Errors middleware returns custom pages according to configured ranges of HTTP Status codes. Read the technical documentation."
|
|
---
|
|
|
|
# Errors
|
|
|
|
It Has Never Been Easier to Say That Something Went Wrong
|
|
{: .subtitle }
|
|
|
|
|
|
|
|
The Errors middleware returns a custom page in lieu of the default, according to configured ranges of HTTP Status codes.
|
|
|
|
!!! important
|
|
|
|
The error page itself is _not_ hosted by Traefik.
|
|
|
|
## Configuration Examples
|
|
|
|
```yaml tab="Docker & Swarm"
|
|
# Dynamic Custom Error Page for 5XX Status Code
|
|
labels:
|
|
- "traefik.http.middlewares.test-errors.errors.status=500-599"
|
|
- "traefik.http.middlewares.test-errors.errors.service=serviceError"
|
|
- "traefik.http.middlewares.test-errors.errors.query=/{status}.html"
|
|
```
|
|
|
|
```yaml tab="Kubernetes"
|
|
apiVersion: traefik.io/v1alpha1
|
|
kind: Middleware
|
|
metadata:
|
|
name: test-errors
|
|
spec:
|
|
errors:
|
|
status:
|
|
- "500-599"
|
|
query: /{status}.html
|
|
service:
|
|
name: whoami
|
|
port: 80
|
|
```
|
|
|
|
```yaml tab="Consul Catalog"
|
|
# Dynamic Custom Error Page for 5XX Status Code
|
|
- "traefik.http.middlewares.test-errors.errors.status=500-599"
|
|
- "traefik.http.middlewares.test-errors.errors.service=serviceError"
|
|
- "traefik.http.middlewares.test-errors.errors.query=/{status}.html"
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
# Custom Error Page for 5XX
|
|
http:
|
|
middlewares:
|
|
test-errors:
|
|
errors:
|
|
status:
|
|
- "500-599"
|
|
service: serviceError
|
|
query: "/{status}.html"
|
|
|
|
services:
|
|
# ... definition of error-handler-service and my-service
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
# Custom Error Page for 5XX
|
|
[http.middlewares]
|
|
[http.middlewares.test-errors.errors]
|
|
status = ["500-599"]
|
|
service = "serviceError"
|
|
query = "/{status}.html"
|
|
|
|
[http.services]
|
|
# ... definition of error-handler-service and my-service
|
|
```
|
|
|
|
!!! note ""
|
|
|
|
In this example, the error page URL is based on the status code (`query=/{status}.html`).
|
|
|
|
## Configuration Options
|
|
|
|
### `status`
|
|
|
|
The `status` option defines which status or range of statuses should result in an error page.
|
|
|
|
The status code ranges are inclusive (`500-599` will trigger with every code between `500` and `599`, `500` and `599` included).
|
|
|
|
!!! note ""
|
|
|
|
You can define either a status code as a number (`500`),
|
|
as multiple comma-separated numbers (`500,502`),
|
|
as ranges by separating two codes with a dash (`500-599`),
|
|
or a combination of the two (`404,418,500-599`).
|
|
|
|
### `service`
|
|
|
|
The service that will serve the new requested error page.
|
|
|
|
!!! note ""
|
|
|
|
In Kubernetes, you need to reference a Kubernetes Service instead of a Traefik service.
|
|
|
|
!!! info "Host Header"
|
|
|
|
By default, the client `Host` header value is forwarded to the configured error [service](#service).
|
|
To forward the `Host` value corresponding to the configured error service URL, the [passHostHeader](../../../routing/services/#pass-host-header) option must be set to `false`.
|
|
|
|
### `query`
|
|
|
|
The URL for the error page (hosted by [`service`](#service))).
|
|
|
|
There are multiple variables that can be placed in the `query` option to insert values in the URL.
|
|
|
|
The table below lists all the available variables and their associated values.
|
|
|
|
| Variable | Value |
|
|
|------------|--------------------------------------------------------------------|
|
|
| `{status}` | The response status code. |
|
|
| `{url}` | The [escaped](https://pkg.go.dev/net/url#QueryEscape) request URL. |
|