Last week Grafana worked without any problems, but after the update to 8.3.5 I cannot log in anymore. In the login screen, after entering my username and password a message appeared: ‘Origin not allowed’. In the grafana.log file I see a line: lvl=eror msg="Failed to look up user based on cookie" lo…

Hello :wave: and welcome to the forum, @jaapd This is a known issue with 8.3.6. See this github issue for a workaround. tl:dr: try adding proxy_set_header Host $http_host; to your config above proxy_pass: Unable to Create/Save Dashboard after v8.3.5 Update …

Hi I upgraded from 8.1 to 8.4.1 but I am still facing this ‘Origin Not Allowed’ error even after adding proxy_set_header Host $http_host; in Nginx config file the server block is listening on 443 server{ listen 443 ssl; server_name example.com ; . . ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem…

Still the same error even after adding the line in my vhost. Any other suggestions?

Hello hello :wave: I’m running Grafana 8.4.2 on a KinD cluster inside Github Codespaces, I’m not sure I have access to any proxy in that environment. I get ‘Origin not allowed’ when testing a Prometheus datasource running on the same namespace. (Although metric auto-completion works :thinking: ) …

In addition to this, on apache2 u add the following line … ProxyPreserveHost On ProxyPass http://127.0.0.1:3000/ ProxyPassReverse http://127.0.0.1:3000/ …

You sould restart nginx, sudo sudo systemctl restart nginx.service

I found a way workaround for myself and you can try this: in your Nginx configuration file using the real domain name replace the $http_host and restart Nginx # proxy_set_header Host $http_host; proxy_set_header Host example.com; It worked for me, hope it can help you also.

Did you get a work around for this? Have a similar issue in an AKS cluster at the moment

Thanks, valid solution for 9.0.3 as well. :smiley:

After update to 8.3.5: 'Origin not allowed' behind proxy

Grafana Configuration

jaapd February 11, 2022, 3:30pm 3

Thanks, it works again!

Origin now allowed

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After update to 8.3.5: 'Origin not allowed' behind proxy

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