The Tengine module is available for compiling into the core nginx codebase. You just have to roll your own binary though<p><a href="https:&#x2F;&#x2F;github.com&#x2F;yaoweibin&#x2F;nginx_upstream_check_module" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;yaoweibin&#x2F;nginx_upstream_check_module</a>