Mixer中内置了stdio适配器，这一适配器将生成的日志数据在本机上输出；为了演示如何收集和查看日志数据，按照以下步骤执行。
1）部署应用示例。仍然使用前面章节中使用的httpbin与sleep服务作为应用示例，运行以下命令部署应用示例：
$ cd mixer/stdio-adapter $ kubectl create -f httpbin.yaml $ kubectl create -f sleep.yaml $ kubectl create -f destination-rule.yaml $ kubectl create -f virtual-service-80-20.yaml
2）向示例应用发送请求。登录到sleep容器中，执行curl命令发送请求，如下所示：
curl http://httpbin:8000/get
3）查看新指标的生成和收集情况。在Kubernetes环境中，使用下面的命令在istio-telemetry pods中搜索日志：
$ kubectl logs -n istio-system -l istio-mixer-type=telemetry -c mixer | grep \"instance\":\"newlog.logentry.istio-system\"
{"level":"warn","time":"2019-02-12T06:08:50.188430Z","instance":"newlog.logentry.istio-system","destination":"telemetry","latency":"1.351686ms","responseCode":200,"responseSize":5,"source":"sleep","user":"unknown"}
{"level":"warn","time":"2019-02-12T06:08:57.075340Z","instance":"newlog.logentry.istio-system","destination":"policy","latency":"1.416861ms","responseCode":200,"responseSize":70,"source":"httpbin","user":"unknown"}
{"level":"warn","time":"2019-02-12T06:08:57.074245Z","instance":"newlog.logentry.istio-system","destination":"httpbin","latency":"5.129003ms","responseCode":200,"responseSize":404,"source":"unknown","user":"unknown"}
{"level":"warn","time":"2019-02-12T06:08:58.076634Z","instance":"newlog.logentry.istio-system","destination":"telemetry","latency":"1.97113ms","responseCode":200,"responseSize":5,"source":"policy","user":"unknown"}
{"level":"warn","time":"2019-02-12T06:08:58.079527Z","instance":"newlog.logentry.istio-system","destination":"telemetry","latency":"1.448625ms","responseCode":200,"responseSize":5,"source":"httpbin","user":"unknown"}