Switching from http to https in multisite

Hello everybody,

I activated an SSL certificate on my website and now I must perform the operations to use it. It seems that there are many different methods to do this and I don’t understand what I really have to do. A list of this methods include: 1. defining a redirection on .htaccess (with variations if you want to redirect the whole network or some specific sites…… that is the one that I need); 2. forcing administratio to use SSL on wp-config.php; 3. modifying all http to https on database; 4. adding a -S on general settings. First question: are this 4 steps optional or complementary?

I’m in the middle of this process and I have doubts because .htaccess already have some rules that are specifically related to multisites.

.htaccess for network multisite has the following rules :

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

The rules to redirect from http to https in .htaccess are like these :

RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Or like these:

RewriteCond% {HTTP_HOST} ^ votresite.com [NC, OR]
RewriteCond% {HTTP_HOST} ^ www.votresite.com [NC]
(*). RewriteRule ^ $ https://www.votresite.com/$1 [L, R = 301, NC]

I don’t really understand what all of this means, so I wonder if it is logic or fine to combine everything in a sequence. It is really necessary to declare two times a “RewriteEngine On”? Do RewriteCond %{REQUEST_FILENAME} and RewriteCond %{HTTPS} or RewriteCond% {HTTP_HOST} could be together in the same file?

Something similar happens on wp-config, in which some definitions related to multisites are too similar to the ones that are used to switching to https.

Someone there can give us a step-by-step instruction to switch from http to https on multisites installations?

Regards !

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