Alertmanager links are lost when using OAuth redirects

[sjparkinson]

What did you do?

Setup OAuth in a reverse proxy to secure Alertmanager.

What did you expect to see?

Alertmanager links would be preserved when redirected through the OAuth redirection-based flow.

What did you see instead? Under which circumstances?

The anchor element of Alertmanagers links are not visible to the reverse proxy and so are lost when redirecting through the OAuth flow.

Environment

• Alertmanager version: v0.14.0

[sjparkinson]

For example, if I visit a link, https://alertmanager/#/alerts?filter=%7Balertname%3D%22Target%20Unavailable%22%2C%20system%3D%22zabbix%22%7D, but I'm not logged into the OAuth provider, the reverse proxy cannot read the anchor from the request and so it's not included in the redirect_uri parameter of the OAuth request.

[brancz]

Are you sure this doesn't have anything to do with your oauth proxy? If you are using the bitly/oauth2_proxy then I can confidently say it's not a problem with the Alertmanager but with the proxy, as I have a pending pull request to fix this 🙂 (RE: bitly/oauth2_proxy#483).

[sjparkinson]

Ah! That is exactly what we're trying out!

[sjparkinson]

I'll close this and watch that issue. Wonderful, thank you!