traefik/docs/content/reference/routing-configuration/http/middlewares/basicauth.md

title, description

title	description
Traefik BasicAuth Documentation	The HTTP basic authentication (BasicAuth) middleware in Traefik Proxy restricts access to your Services to known users. Read the technical documentation.

The basicAuth middleware grants access to services to authorized users only.

Configuration Examples

# Declaring the user list
http:
  middlewares:
    test-auth:
      basicAuth:
        users:
          - "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/"
          - "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"

# Declaring the user list
[http.middlewares]
  [http.middlewares.test-auth.basicAuth]
  users = [
    "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/",
    "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
  ]

# Declaring the user list
#
# Note: when used in docker-compose.yml all dollar signs in the hash need to be doubled for escaping.
# To create user:password pair, it's possible to use this command:
# echo $(htpasswd -nB user) | sed -e s/\\$/\\$\\$/g
#
# Also, note that dollar signs should NOT be doubled when not evaluated (e.g. Ansible docker_container module).
labels:
  - "traefik.http.middlewares.test-auth.basicauth.users=test:$$apr1$$H6uskkkW$$IgXLP6ewTrSuBkTrqE8wj/,test2:$$apr1$$d9hr9HBB$$4HxwgUir3HP4EsggP/QNo0"

{
  // ...
  "Tags": [
    "traefik.http.middlewares.test-auth.basicauth.users=test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/,test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"
  ]
}

# Declaring the user list
apiVersion: traefik.io/v1alpha1
kind: Middleware
metadata:
  name: test-auth
spec:
  basicAuth:
    secret: secretName

Configuration Options

Field	Description	Default	Required
users	Array of authorized users. Each user must be declared using the name:hashed-password format. (More information here)	""	No
usersFile	Path to an external file that contains the authorized users for the middleware. The file content is a list of name:hashed-password. (More information here)	""	No
realm	Allow customizing the realm for the authentication.	"traefik"	No
headerField	Allow defining a header field to store the authenticated user.	""	No
removeHeader	Allow removing the authorization header before forwarding the request to your service.	false	No

Passwords format

Passwords must be hashed using MD5, SHA1, or BCrypt. Use htpasswd to generate the passwords.

users & usersFile

• If both users and usersFile are provided, they are merged. The contents of usersFile have precedence over the values in users.
• Because referencing a file path isn’t feasible on Kubernetes, the users & usersFile field isn’t used in Kubernetes IngressRoute. Instead, use the secret field.

Kubernetes Secrets

The option users supports Kubernetes secrets.

!!! note "Kubernetes kubernetes.io/basic-auth secret type"

Kubernetes supports a special `kubernetes.io/basic-auth` secret type.
This secret must contain two keys: `username` and `password`.

Please note that these keys are not hashed or encrypted in any way, and therefore is less secure than other methods.
You can find more information on the [Kubernetes Basic Authentication Secret Documentation](https://kubernetes.io/docs/concepts/configuration/secret/#basic-authentication-secret)

{!traefik-for-business-applications.md!}