Wordpress Multisite Network Admin RedirectLoop

There are certain cases where we got the issues like this on wordpress multisite with subdomains. Here I have configured wordpress multisites on my domain and sites were working fine. But when I tried to access wordpress multisite network admin eg: domain.com/wp-admin/network , I'm getting the error "Redirect Loop"

In the case of multisite, your current site and blog domain should be equivalent and your current site path and blog path should also be equivalent. Here , blog domain was different from sitedomain.
I have set the blog domain as domain.com and site domain as www.domain.com which was causing the redirect loop.

After correcting the blog domain, everything was working fine as expected.

Login to mysql

# mysql
mysql> use user_wp
Database changed

mysql> select * from user_blogs;

*************************** 1. row ***************************

     blog_id: 1

     site_id: 1

     domain: domain.com

     path: /

     registered: 2017-07-13 09:05:19

     last_updated: 2017-07-27 09:39:07

     public: 1

     archived: 0

     mature: 0

     spam: 0

     deleted: 0

     lang_id: 0

mysql> update user_blogs SET domain = 'www.domain.com' where blog_id = "1";

Hope this will help you to resolve this issue.

Enginetron : 502 Bad Gateway

Enginetron is a cpanel plugin which acts as a reverse proxy with apache to improve the server performance. There are certain cases where we get the following errors on the domain after installating enginetron.

502 Bad Gateway

In that case, you can use the following fix.
Open the file  /etc/nginx/custom_rules and add this at the bottom.

[root@server~]# vi /etc/nginx/custom_rules

if ($host ~ "domainname.com") {

set $PROXY_DOMAIN_OR_IP "xx.xx.xx.xx"; }

Domainname.com should be replaced by your domain and xx.xx.xx.xx should be replaced by your IP address.