How to close the site for reconstruction?

Question

PHP

The site will be closed for a couple of weeks
There was a question, how to close it properly for search engines?

Should I redirect all pages to a stub or display information about the repair directly on them?
And acc. what information should be provided to search engines that this phenomenon is temporary.

Answer 1

Closing the site for such a long time is not good.
You need to respond with HTTP code 503, do not redirect anything: https://developer.mozilla.org/en/docs/Web/HTTP/Sta...

Answer 2

If the site is on Wordpress, then there is a special stub plugin https://ru.wordpress.org/plugins/wp-maintenance-mode/