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Frank Martin
Asked: 2020-09-01 22:55:56 +0800 CST

Can I write server IP instead of DNS when changing nameservers

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My website is currently using CloudFlare reverse proxy. In my nameservers I have defined DNS provided by CloudFlare. I am having some issue with CloudFlare so want to test it by removing reverse proxy. If I write my server IP in nameservers, will site sill work?

EDIT

I am getting Error 502 Bad Gateway from CloudFlare when trying to add product in shopping cart. I am using WordPress with WooCommerce. This is happening for all products except the one which I added last time a couple of days ago. I am able to add this product in cart but no other product. Site is hosted on VPS and nothing has been changed on it.

domain-name-system nameserver reverse-proxy cloudflare

1 Answers

  1. I am using nginx with PHPFPM and error was related to memory/cache as this VPS has only 1GB of RAM.

    First I looked into nginx logs:
    sudo tail /var/log/nginx/error.log -n 10

    And found error:
    upstream sent too big header while reading response header from upstream

    So I added following lines in /etc/nginx/nginx.conf which fixed the issue

    fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
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