问题
I have three environments:
env.com
env-uat.com
env-pre.com
All three pages run the same code. I want env-uat.com and env-pre.com to both get this in the htaccess:
Header set X-Robots-Tag "noindex, nofollow"
This will effectively completely unindex these pages, including PDF files etc. But I don't want to affect env.com.
How can I make the Header X-Robots-Tag only be added for env-uat.com and env-pre.com and NOT env.com?
** UPDATE **
From what I could find so far, it would seem you can only do something like this:
SetEnvIf Request_URI "^/privacy-policy" NOINDEXFOLLOW
Header set X-Robots-Tag "noindex, follow" env=REDIRECT_NOINDEXFOLLOW
But this makes it specific to a PAGE. I want it specific to a DOMAIN.
回答1:
@Starkeen was right up to here :
SetEnvIf host ^(env-uat\.com|host2\.com)$ NOINDEXFOLLOW
So , you could include the domains that you want to be involved in this Env like this :
SetEnvIf host ^(env-uat|env-pre)\.com NOINDEXFOLLOW
Then you should attach the Env with same name like this :
Header set X-Robots-Tag "noindex, follow" env=NOINDEXFOLLOW
Not like this :
Header set X-Robots-Tag "noindex, follow" env=REDIRECT_NOINDEXFOLLOW
The line above will look to Env its name is REDIRECT_NOINDEXFOLLOW not NOINDEXFOLLOW and it is diffrent case from this question X Robots Tag noindex specific page That was about matching against Request_URI and for special case .
So , the code should look like this :
SetEnvIf host ^(env-uat|env-pre)\.com NOINDEXFOLLOW
Header set X-Robots-Tag "noindex, follow" env=NOINDEXFOLLOW
回答2:
You can match against Host header using SetEnvIf directive.
To make the Header X-Robots-Tag only available for a specific host ( env-uat.com ) you could use something like the following :
SetEnvIf host ^env-uat\.com$ NOINDEXFOLLOW
Header set X-Robots-Tag "noindex, follow" env=REDIRECT_NOINDEXFOLLOW
To make this available for multiple hosts ,you could use the following :
SetEnvIf host ^(env-uat\.com|host2\.com)$ NOINDEXFOLLOW
Header set X-Robots-Tag "noindex, follow" env=REDIRECT_NOINDEXFOLLOW
来源：https://stackoverflow.com/questions/49250244/htaccess-header-for-specific-domain