# Redirect with domain replacement
labels:
- "traefik.http.middlewares.test-redirectregex.redirectregex.regex=^http://localhost/(.*)"
- "traefik.http.middlewares.test-redirectregex.redirectregex.replacement=http://mydomain/$1"

# Redirect with domain replacement
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: test-redirectregex
spec:
  redirectRegex:
    regex: ^http://localhost/(.*)
    replacement: http://mydomain/$1

"labels": {
  "traefik.http.middlewares.test-redirectregex.redirectregex.regex": "^http://localhost/(.*)",
  "traefik.http.middlewares.test-redirectregex.redirectregex.replacement": "http://mydomain/$1"
Rancher
# Redirect with domain replacement
labels:
- "traefik.http.middlewares.test-redirectregex.redirectregex.regex=^http://localhost/(.*)"
- "traefik.http.middlewares.test-redirectregex.redirectregex.replacement=http://mydomain/$1"
File (TOML)
# Redirect with domain replacement
[http.middlewares]
  [http.middlewares.test-redirectregex.redirectRegex]
    regex = "^http://localhost/(.*)"
    replacement = "http://mydomain/$1"
File (YAML)
# Redirect with domain replacement
http:
  middlewares:
    test-redirectregex:
      redirectRegex:
        regex: "^http://localhost/(.*)"
        replacement: "http://mydomain/$1"
Configuration Options¶
permanent¶
Set the permanent option to true to apply a permanent redirection.
regex¶
The regex option is the regular expression to match and capture elements from the request URL.
Warning
Care should be taken when defining replacement expand variables: $1x is equivalent to ${1x}, not ${1}x (see Regexp.Expand), so use ${1} syntax.
Regular expressions and replacements can be tested using online tools such as Go Playground or the Regex101.
replacement¶
The replacement option defines how to modify the URl to have the new target URL.