Nginx: add_header not working on 404
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Nginx: add_header not working on 404
Mattias Geniar, June 07, 2019
Follow me on Twitter as @mattiasgeniar
I had the following configuration block on an Nginx proxy.
server {
listen 80 default;
add_header X-Robots-Tag noindex;
...
}
The idea was to add the X-Robots-Tag header on all requests being served. However, it didn’t work for 404 hits.
$ curl -I "http://domain.tld/does/not/exist" HTTP/1.1 404 Not Found ...
… but no add_header was triggered.
Turns out, you need to specify the header should be added always, not just on successfull requests.
server {
listen 80 default;
...
add_header X-Robots-Tag noindex always;
...
}
This fixes it, by adding always to the end of the add_header directive.
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