CODEWITHSUNDEEP
apache.htaccesshttp-headersconditional-statementssetenv
lonkoenig
lonkoenig

Reputation: 42

Set X-Robots-Tag on development and staging servers

Adding this to an older system and am trying to do it in the .htaccess file.

# Prevent search engine indexing on dev sites:
SetEnvIf Host myliveserver\.com$ isproduction 
Header set X-Robots-Tag "noindex, nofollow, noarchive" env!=isproduction

Running on Apache 2.2.22 with mod_setenvif

Getting a dreaded 500. If I remove the conditional env!=isproduction it runs. What am I missing about the conditional clause?

Upvotes: -1

Views: 1113

Answers (2)

Olaf Dietsche
Olaf Dietsche

Reputation: 74088

There are two possibilities for a 500 status code

  • mod_header isn't enabled
  • according to Header

Syntax: Header [condition] set|append|merge|add|unset|echo|edit header [value] [replacement] [early|env=[!]variable]
...
env=[!]varname
The directive is applied if and only if the environment variable varname exists. A ! in front of varname reverses the test, so the directive applies only if varname is unset.

So, your header directive should be

Header set ... env=!isproduction

Upvotes: 3

lonkoenig
lonkoenig

Reputation: 42

Ah.. there it is...
=! vs !=
The NOT is applied to the variable, not the equality.

Upvotes: -1

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