hello team wave i m trying to get setup with self hosted gro

Question

hello team wave i m trying to get setup with self hosted growthbook on kubernetes im running into CORS issues during ` auth firsttime` request from growthbook web to growthbook api i ve set the appropriate env vars such as `APP ORIGIN` to the backend api server and `API HOST` to frontend service my ingresses traefik are using oauth but im still getting blocked on the username password auth form page

future-teacher-7046 · Answer

What error are you seeing exactly Typically if there are CORS issues you wouldn t even be able to see the auth form at all

quick-orange-44935 · Answer

```Access to fetch at lt DOMAIN gt auth firsttime from origin lt DOMAIN gt has been blocked by CORS policy Response to preflight request doesn t pass access control check Redirect is not allowed for a preflight request ```

future-teacher-7046 · Answer

Hmm I don t think GrowthBook does any redirects from the API side Is that coming from somewhere else like traefik

quick-orange-44935 · Answer

it is possible that using traefik ingress for `growthbook api` is hitting google oauth redirect which is being blocked by CORS for ui gt api requests

quick-orange-44935 · Answer

is there a recommended way to support https traffic do the servers support https traffic over port 443

future-teacher-7046 · Answer

Self hosted GrowthBook does not use Google OAuth for logging in It stores users locally within MongoDB So there s no redirect happening at all on the GrowthBook side As far as https the containers themselves only support http so you would need to do SSL termination at the proxy or load balancer level

future-teacher-7046 · Answer

From your error it looks like the OPTIONS request is returning a 301 redirect or similar Can you see where it s trying to redirect to That might give a clue as to where it s coming from

quick-orange-44935 · Answer

yup this was due to traefik triggering oauth redirect