Trace your micro-services oriented application with Zipkin and OpenTracing

Jul 14, 20173 likes1,308 views

This document discusses using Zipkin and OpenTracing to trace microservices applications. It covers the foundations of tracing including spans, inter-process propagation, and active span management. It provides examples of using Zipkin and the PHP Zipkin support library to create spans with annotations and set parent/child relationships between spans. The document recommends instrumenting frameworks to generate traces and using features like KV stores and events to include useful trace data. It cautions against creating too many spans or including too many details in span names.

Trace your micro-services oriented application with
Zipkin and OpenTracing
CNCF Italy - Turin

Walter Dal Mut
github.com/wdalmut
twitter.com/walterdalmut

Trace your micro-services oriented application with Zipkin and OpenTracing

Tracing is about Spans, inter-process propagation
and active span management

Inter-process propagation
X-B3-TraceId: 1250938620936823095802313
X-B3-SpanId: 12435243758
X-B3-ParentSpanId: 1245675313
X-B3-Sampled: 1

PHP ZipKin support library
https://github.com/wdalmut/php-zipkin

Create span 2annotations(sr,ss)
$span = new ServerReceive(
"get_users", // method name
"oauth2", // service name
"auth.corley:80" // IP:Port
);
$span->sent();

Create span 2annotations(cs,cr)
$span = new ClientSend(
"get_users", // method name
"oauth2", // service name
"auth.corley:80" // IP:Port
);
$span->receive();

Set as a child span
$span->childOf($parentSpan);

Get an existing span
$span = $tracer->findOneBy("kind", "root");

Use K/V store
$span
->getBinaryAnnotations()
->set("error", true);

Create an event annotation
$span->add("an_event");

Use your framework to instrument your app
https://github.com/wdalmut/opentracing-bundle

Query trace
thanks to doctrine events
doctrine:
dbal:
logging: true

$Trace other services (cs,cr) thanks to Guzzle middleware http.handler: class: GuzzleHttpHandlerCurlHandler http.stack: class: GuzzleHttpHandlerStack calls: - ["setHandler", ["@http.handler"]] tags: - { name: corley.auth.guzzle_handler_stack } http.client: class: GuzzleHttpClient arguments: - {"handler": "@http.stack"}$

too many spans (use sr,cs,ss,cr for the same span)

too much details (span name
/v1/user/walter.dalmut@gmail.com)

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