login loop using ingress nginx, auth_request always returning 401 about oauth2-proxy HOT 18 CLOSED

aaah, so with your clue and a little bit of experimentation...
URL/Domain I am logging into:

https://my.thing.example.com

cookie-domain: "example.com"
whitelist-domain: ".thing.example.com"

and this worked!

Yeah, some more documentation would help... It took me all morning to work out that the whitelist-domain was mandatory and that is why everything I was logging into was going to "/". :)

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We really need to improve the documentation here, apologies!

Can you check which domain the set-cookie header is being set for when you complete your authentication on the proxy?

I think you might need to set cookie-domain to match your whitelist-domain flag, can you try that and see if that helps?

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ok, I had a wildcard in for the whitelist but for testing sake to see it work, I just hard coded both cookie-domain and whitelist-domain to the same value... This seems to have made things worse. :)

403 Permission Denied
http: named cookie not present

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Yes I believe your findings match our configuration here, I'm out of office right now so can't check unfortunately

If you have some time to update the docs I would appreciate it. The whitelist domain flag is, as you say, mandatory if (and only if) you wish to host the oauth2 proxy on a separate domain to the ones you are protecting. A short guide for using this with the nginx Auth request mode would be good

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ok, another question.

The power of having the oauth-proxy on its own domain is that you can have many things use it to login. Is there a way to have per domain ACL on it?

domain1.k8s.example.com
--> allow email domain example2.com
domain2.k8s.example.com
--> Allow email user [email protected], [email protected]

does that make sense? Or so I need to have a separate proxy for each one?

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yeah, so I am trying a another proxy install for the site I want to have email users:

403 Permission Denied
http: named cookie not present

is what I get, I matched the cookie domain and hostname to be the same.

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domain1.k8s.example.com
--> allow email domain example2.com
domain2.k8s.example.com
--> Allow email user [email protected], [email protected]

does that make sense? Or so I need to have a separate proxy for each one?

At present you will need a separate proxy for each one

yeah, so I am trying a another proxy install for the site I want to have email users:

403 Permission Denied
http: named cookie not present

is what I get, I matched the cookie domain and hostname to be the same.

Can you inspect the responses when setting the cookie and check that the browser is storing the cookie you expect?

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Yeah, I had to create another proxy on another domain and match all the settings for the two authentication scopes I was after.

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Yeah, some more documentation would help... It took me all morning to work out that the whitelist-domain was mandatory

A bit more logging here would be super helpful. I hit this required setting today as well.

A log.Printf near the end of IsValidRedirect [1] would be super useful after none of the whitelistDomains have returned true.

https://github.com/pusher/oauth2_proxy/blob/bd64aeb7ee859aab0d85b9a95e517c6e20787b94/oauthproxy.go#L626-L630

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Hi,

I have the similar issue

Proxy oauth logs:

GET - "/oauth2/auth" HTTP/1.1 "Go-http-client/1.1" 401 21 0.000
GET - "/oauth2/start?rd=https://my.domain.eu/.well-known/acme-challenge/XXXXXXXX" HTTP/1.1 "Go-http-client/1.1" 302 456 0.000
2019/11/15 13:24:53 oauthproxy.go:830: Cookie "_oauth2_proxy" not present

Ingress controller:

"GET /oauth2/auth HTTP/1.1" 401 21 "http://app.test.eu/.well-known/acme-challenge/xxxxxxxxxxxxxxxxxxxxxxxxxx" "Go-http-client/1.1" 576 0.001 [XXX-proxy-4180] [] xx.xxx.x.xxx:4180 21 0.000 401 xxxxxxxxxxxxxxxxxxxxxxxxxx
"GET /.well-known/acme-challenge/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 HTTP/1.1" 401 0 "http://app.test.eu/.well-known/acme-challenge/xxxxxxxxxxxxxxxxxxxxxxx" 
"Go-http-client/1.1" 0 0.005 [pact-pact-80] [] 13.80.147.2:443 0 0.004 401 xxxxxxxxxxxxxxxxxxxxxxx

I'm using Azure. This is the setup:

Application:

    ingress:
      enabled: true
      annotations:
        certmanager.k8s.io/cluster-issuer: letsencrypt-prod
        kubernetes.io/ingress.class: nginx
        nginx.ingress.kubernetes.io/auth-url: "https://$host/oauth2/auth"
        nginx.ingress.kubernetes.io/auth-signin: "https://$host/oauth2/start?rd=$escaped_request_uri"
        nginx.ingress.kubernetes.io/proxy-buffer-size: "16k"
      hostnames:
      - app.test.eu
      tls:
        enabled: true

Proxy:

  values:
    config:
      clientID: xxxxxxxxxxxxxxxxx
      clientSecret: xxxxxxxxxxxxxxxxxxxxxxxxx
      cookieSecret: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
      configFile: |
        provider = "azure"
        azure_tenant = "xxxxxxxxxxxxxxxxxxxx"
        email_domains = [ "test.eu" ]
    service:
      port: 4180
    readinessProbe:
      periodSeconds: 240
    extraArgs:
      whitelist-domain: ".test.eu"
      cookie-domain: "test.eu"
    ingress:
      enabled: true
      path: /oauth2
      hosts:
        - app.test.eu
      annotations:
        kubernetes.io/ingress.class: nginx
        nginx.ingress.kubernetes.io/proxy-buffer-size: "16k"
      tls:
        - hosts:
            - app.test.eu
          secretName: test-tls

I tried multiple combination and can't figure it out. Any ideas?

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@s1apped Try your cookie domain with a . at the beginning, I believe it has to have this to be applicable to subdomains

cookie-domain: ".test.eu"

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@JoelSpeed unfortunatelly it didn't help.

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Has anyone been able to fix this? Constantly getting 401 Unauthorized error.

@s1apped -- Were you able to find a work around?

I have tried all kinds of combinations for the cookie-domain and whitelisting, oauth2_proxy keeps throwing the Cookie "_oauth2_proxy" not present

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If you are using azure, I would recommend trying the redid session storage mechanism. The cookie storage does not work very well with Azure due to the size of the ID Tokens they generate

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This issue has been inactive for 60 days. If the issue is still relevant please comment to re-activate the issue. If no action is taken within 7 days, the issue will be marked closed.

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I am able to reproduce this. We are using the 3.0.0 helm chart

          - --cookie-domain=.test.example.com
          - --email-domain=*
          - --github-team=example
          - --provider=github
          - --redirect-url=https://oauth.test.example.com
          - --upstream=file:///dev/null
          - --whitelist-domain=.test.example.com

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@drewwells Your redirect-url is invalid, it should point to the OAuth2 Proxy callback eg https://oauth.test.example.com/oauth2/callback

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@JoelSpeed
Is there any doc to configure traefik (ingress Controller), oauth2-proxy & DEX (OIDC).
We configured k8s dashboard & oauth2
Issues are :- we are able to redirect and authenticate with DEX & landing again with dashboard login page.

authResponseHeaders:
  - X-Forwarded-User
  - X-Auth-User
  - X-Secret

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