Adding and using header HTTP in nginx

Question

I am using two system  both are Nginx load balancer and one act as backup    I want to add and use few HTTP custom headers   Below are my codes for both   upstream upstream0        list of upstream servers     server backend 80      server backup load balancer 777 backup       healthcheck    server       listen 80       Add custom header about the port and protocol   http or https      server name         location               is included since links are not allowed in the post         proxy pass  http   upstream0             Backup system  server       listen 777      server name         doing some other extra stuff      use port and protocol to direct     How can I achieve that

User · Answer

You can use upstream headers  named starting with  http   and additional custom headers  For example   add header X-Upstream-01  http x upstream 01  add header X-Hdr-01  txt01    next  go to console and make request with user s header   curl -H  X-Upstream-01  HEADER1  -I http   localhost 11443    the response contains X-Hdr-01  seted by server and X-Upstream-01  seted by client   HTTP 1 1 200 OK Server  nginx 1 8 0 Date  Mon  30 Nov 2015 23 54 30 GMT Content-Type  text html charset UTF-8 Connection  keep-alive X-Hdr-01  txt01 X-Upstream-01  HEADER1

User · Answer

To add a header just add the following code to the location block where you want to add the header   location some-location     add header X-my-header my-header-content            Obviously  replace the x-my-header and my-header-content with what you want to add  And that s all there is to it

[http] Adding and using header (HTTP) in nginx

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