Javascript 节点/快捷服务，span在日志中生成，但在Jaeger UI中看不到我的服务

我正在尝试为使用Express.js在Node.js中编写的微服务设置Jaeger跟踪

我在我的express应用程序中添加了一个简单的get请求处理程序，当我通过curl访问端点时，我可以看到日志中生成了一个范围，但在Jaeger UI中看不到我的服务名称

function initTracer(serviceName, options) {
  var config = {
    'serviceName': serviceName,
    'sampler': {
      'type': 'const',
      'param': 1
    },
    'reporter': {
      'logSpans': true,
      'agentHost': '192.168.99.100',
      'agentPort': 6832
    }
  }
  var options = {
    'logger': {
      'info': function logInfo(msg) {
        console.log('INFO ', msg)
      },
      'error': function logError(msg) {
        console.log('ERROR', msg)
      }
    }
  }

  const tracer = initJaegerTracer(config, options)

  //hook up nodejs process exit event
  process.on('exit', () => {
    console.log('flush out remaining span')
    tracer.close()
  })
  //handle ctrl+c
  process.on('SIGINT', () => {
    process.exit()
  })

  return tracer
}

exports.initTracer = initTracer

//server.js

const initTracer = require('./tracing').initTracer;
const {Tags, FORMAT_HTTP_HEADERS} = require('opentracing')
const tracer = initTracer('demo-service')

app.get('/service/model/jaeger', function(req, res) {
  var requestEndpoint = req.originalUrl
  console.log('[services.server.js] GET received on:', requestEndpoint)
  const parentSpanContext = tracer.extract(FORMAT_HTTP_HEADERS, req.headers)
  const span = tracer.startSpan('http_get_' + requestEndpoint, {
    childOf : parentSpanContext,
    tags : {[Tags.SPAN_KIND]: Tags.SPAN_KIND_RPC_SERVER}
  });
  span.log({'event': `http_get_${requestEndpoint}_end`, 'value' : 'some_value_here'});
  span.finish()
  res.send('Hello Jaeger bro!')
})

//tracing.js

'use strict'

var initJaegerTracer = require('jaeger-client').initTracer

function initTracer(serviceName) {
  var config = {
    'serviceName': serviceName,
    'sampler': {
      'type': 'const',
      'param': 1
    },
    'reporter': {
      'logSpans': true,
    }
  }
  var options = {
    'logger': {
      'info': function logInfo(msg) {
        console.log('INFO ', msg)
      },
      'error': function logError(msg) {
        console.log('ERROR', msg)
      }
    }
  }

  const tracer = initJaegerTracer(config, options)

  //hook up nodejs process exit event
  process.on('exit', () => {
    console.log('flush out remaining span')
    tracer.close()
  })
  //handle ctrl+c
  process.on('SIGINT', () => {
    process.exit()
  })

  return tracer
}

exports.initTracer = initTracer

我在日志中看到：

2018-03-08T01:03:34.519134479Z信息报告范围9b88812951bcd52f:9b88812951bcd52f:0:1

在尝试了不同的组合后，我终于明白了这一点。这是因为Jaeger代理没有从我的应用程序接收任何UDP数据包

您需要告诉跟踪器在哪里发送UDP数据包，在本例中是

docker机器ip

我补充说：

'agentHost': '192.168.99.100',
'agentPort': 6832

然后我可以在Jaeger UI中看到我的服务

function initTracer(serviceName, options) {
  var config = {
    'serviceName': serviceName,
    'sampler': {
      'type': 'const',
      'param': 1
    },
    'reporter': {
      'logSpans': true,
      'agentHost': '192.168.99.100',
      'agentPort': 6832
    }
  }
  var options = {
    'logger': {
      'info': function logInfo(msg) {
        console.log('INFO ', msg)
      },
      'error': function logError(msg) {
        console.log('ERROR', msg)
      }
    }
  }

  const tracer = initJaegerTracer(config, options)

  //hook up nodejs process exit event
  process.on('exit', () => {
    console.log('flush out remaining span')
    tracer.close()
  })
  //handle ctrl+c
  process.on('SIGINT', () => {
    process.exit()
  })

  return tracer
}

exports.initTracer = initTracer