How to pass the system environment variable to nginx.conf

Question

My question is how to pass the system environment variable to nginx.conf?

I define a system variable CLASSPATH in /etc/profile:

export CLASSPATH=$CLASSPATH:$HADOOP_HOME/bin/hadoop classpath --glob

And I define tow variables in nginx.conf:

env TEST_ENV=/usr/local/test;

env $CLASSPATH;

and print the variables by lua:

location /lua {

default_type text/html;

content_by_lua '

    ngx.say(os.getenv("TEST_ENV"));

    ngx.say(os.getenv("CLASSPATH"));

';

}

The results as below:

ngx.say(os.getenv("TEST_ENV")); ====> /usr/local/test

ngx.say(os.getenv("CLASSPATH")); ====> nil

Looks the env directive can't pass the system value to nginx.conf

Any suggestion?

Try `env CLASSPATH;` without the `$`. – Richard Smith Jul 25 '16 at 12:09 — Richard Smith, Jul 25 '16 at 12:09
env CLASSPATH; print nil too. – Chunhui Zhang Jul 27 '16 at 05:09 — Chunhui Zhang, Jul 27 '16 at 05:09

ivanji · Answer 1 · 2017-03-15T12:41:22.500

This is how I do it using fastcgi and hopefully it'll be useful to you or anyone out there. My env variables are defined under /etc/environment. Note that after you define them you can use source /etc/environment to make them available to your session.

Let's take for example one of your variables. This would go under /etc/environment CLASSPATH=$HADOOP_HOME/bin/hadoop classpath

Once these have been defined in the system, for nginx I'd add the following within the location block: fastcgi_param CLASSPATH $CLASSPATH; include fastcgi_params;

How to pass the system environment variable to nginx.conf

1 Answers1