[nginx-lua] How do I deliver traceid and span?

[snpcp]

Hi,

When I using skywalking for nginx, how does the upstream server get the traceid and span generated by skywalking of Nginx? This relates to how can Nginx and upstream server be concatenated. Please tell me what I should do?

Thanks.

[wu-sheng]

That is cross process propagation protocol. Read document in the main repo. It is defined there. Not just trace id. Your question is not right.

[snpcp]

Excuse me, Could you explain it in detail for me?

About traceid and span, Don't I have to do anything? so, How do I associate Nginx and Upstream Server?

Thanks.

[wu-sheng]

https://github.com/apache/skywalking/blob/master/docs/en/protocols/README.md#language-based-native-agent-protocol

If you still don't understanf, you have missed the tracing acknowledge, not skywalking. Consider to read Google Dapper paper.

[wu-sheng]

If your app has installed the agent, then, yes. You don't need to do anything. That is auto instrumentation.

[snpcp]

Sorry, I don't understand skywalking.

So, Traceid is passed to the Server via an upstream request？Or Is nignx and upstream server associated by Skywalking server?

Thanks.

[snpcp]

I know opentracing and read your documentation, but I don't know the principle of nginx relevance to upstream server about traceid.

[wu-sheng]

Nginx lua agent is just an implementation of SkyWalking tracing model. Nothing more.

[snpcp]

Hi wu-sheng,

Does Skywalking use SW6 in the upstream request to associate a service? Is that so?

Thanks.

[snpcp]

If Skywalking is used dynamically in my customized Nginx, I need to manually add SW6 to the upstream request.

[wu-sheng]

Don't know what is your meaning.

[snpcp]

ok, thanks for your help me.