Learn what to do when NGINX doesn’t redirect on auth_request 302. Our NGINX Support team is here to help you with your questions and concerns.

NGINX doesn’t redirect on auth_request 302 | Fixed

If you run into a situation where NGINX doesn’t redirect on an auth_request with a 302 status code, our experts can help.

According to our experts, this occurs when NGINX’s auth_request module performs authentication checks and responds with an HTTP 302 status code to start a redirection. However, the expected redirection does not take place.

Troubleshooting Tips

• First, we have to make sure the auth_request block is correctly configured in our NGINX configuration file. Furthermore, the internal location is correct for the authentication subrequest.
• The error may be due to the Location header in the 302 response being set incorrectly. Here, we have to check our configuration to confirm that the Location header points to the correct URL for redirection.
• In case we have caching enabled, it may prevent the redirection. Here, we can disable caching temporarily to see if it resolves the issue.
• Next, we can try checking if the response headers from the authentication subrequest are as expected. The 302 response will include a Location header with the URL to which the client should be redirected.
• Sometimes, browser behavior can affect how redirections are handled. We can clear our browser cache or try accessing the site from a different browser to rule out any browser-related issues.
• If NGINX is acting as a reverse proxy and interacting with other servers, we have to make sure that the proxy settings are correctly configured.
• Furthermore, we can check the error logs for more information about the error.
• We can also test the behavior with different status codes and see if the redirection works as expected. This can help find out if the error is specific to the 302 status code.
• Additionally, we have to make sure we are using a compatible version of NGINX and that the auth_request module is enabled.

If none of the tips above help, our experts suggest enabling debug logging in NGINX to get more information about the request processing and responses. This will help us identify any issues in the process.

[Need assistance with a different issue? Our team is available 24/7.]

Conclusion

Today, our Support Techs demonstrated what to do when NGINX doesn’t redirect on auth_request 302.