Too many redirects in Magento 2.3.3

Question

I am trying to migrate a magento version 2.3.3 site / system from one server to another.

After doing everything I should do to complete the migration I am getting 302 as a server response once after another. A targeting loop.

I have already tried some solutions such as changing the values of the config table core_config_data.

            path           |              value
    web/seo/use_rewrites   |                1
    web/unsecure/base_url  |       http://exemple.com/
     web/secure/base_url   |      https://exemple.com/
web/secure/use_in_frontend |                1
web/secure/use_in_adminhtml|                1
  web/url/redirect_to_base |                0
   web/cookie/cookie_path  |               NULL
  web/cookie/cookie_domain |               NULL
 web/cookie/cookie_httponly|                0

I looked into .htaccess to see if there was something that was redirecting and found nothing either. I leave the link to it here: https://pastebin.com/30LDUsb5

After thinking it was all right, I ran php bin / magento c: c. And perhaps another important piece of information, magento is using Redis for front and backend sessions and caching. The server I set up has a Redis server available but it is empty, magento can populate it from scratch.

Thank you in advance for any light.

Answer 1

Explanation:

Your frontend is using http, but in your config you've set it to force https in frontend (web/secure/use_in_frontend value 1, meaning "yes/true"). Therefore by visiting https, magento2 redirects to http, but the http reads the m2 config and goes back to https. Hence the loop.

Solution 1:

Try setting web/secure/use_in_frontend to 0

php bin/magento config:set web/secure/use_in_frontend 0

and clear the cache:

php bin/magento cache:clean

Confirm the changes:

php bin/magento config:show web

Solution 2:

Another way to resolve this is to set your web/unsecure/base_url from http to https.

If the redirect still persists with use_in_frontend as 0, try in a new private/incognito window or clear your cache and try again, or even another PC/mobile or a different network (your mobile 3G), as redirects sometimes persist and need clearing local system dns caches etc.