Njs: Unable to find the njs version

[laith-leo]

I'm trying to find out the njs module version that compiled within Nginx. nginx -v shows the module is there but doesn't show the version.

Is there any way to find out the version of njs module that already compiled in within Nginx?

I considered this method for installation.
Thanks.

[xeioex]

Hi @laith-leo,

Dynamically:
njs version: njs.version
nginx version: r.variables.nginx_version

using njs CLI: njs -v

Statically for ngx_http_js_module.so

strings ./usr/lib/nginx/modules/ngx_http_js_module.so  | grep -e '0\.'
U0.4.1

For pre-built packages in Ubuntu:

sudo apt install nginx-module-njs
dpkg -s nginx-module-njs
...
Version: 1.18.0.0.4.1-1~xenial
Depends: libc6 (>= 2.17), libpcre3, libreadline6 (>= 6.0), nginx (= 1.18.0-1~xenial)
...

Here 1.18.0 is nginx version, the second part 0.4.1 is njs version.

[laith-leo]

Thanks @xeioex,

These options are not really helping me, I have compiled the njs module with Nginx source code, so I don't have an njc cli neither the ngx_http_js_module.so is available.

Is there a way to determine the njs version through an API call through curl command or something? Just asking as I have hundreds of servers that I need to check which njs version is installed on each.

[drsm]

@laith-leo

Hi!

https://github.com/xeioex/njs-examples#hello-world-hello

[xeioex]

@laith-leo

Is there a way to determine the njs version through an API call through curl command or something?

The only option is to declare a location and return njs.version from it. There is no builtin locations in nginx.

[xeioex]

@laith-leo

We recommend using pre-built packages, because they are tested against the nginx version they are compiled with.