add instruction docs of trace and metrics in eventmesh (apache#706)

docs/cn/instructions/eventmesh-metrics-Prometheus-instruction.md

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+## 通过Prometheus观察metrics
+
+### 1、下载Prometheus
+官网：https://prometheus.io/
+
+本地下载Prometheus：https://prometheus.io/download/ 
+
+选择自己电脑对应的版本下载并解压缩
+
+![Prometheus-download](../../images/Prometheus-download.png)
+
+### 2、在prometheus.yml中添加配置
+
+如果你是Prometheus的新手，可以直接复制eventmesh-runtime/conf/prometheus.yml替换
+
+例如：这是win-64的下载后的样子：
+
+![prometheus-yml](../../images/prometheus-yml.png)
+
+替换红框中的文件
+
+如果你十分了解Prometheus，可以自行配置，eventmesh默认的导出的端口为19090。
+
+
+
+ps：如果需要更换端口的话，请修改eventmesh-runtime/conf/eventmesh.properties中的
+
+```properties
+#prometheusPort
+eventMesh.metrics.prometheus.port=19090
+```
+
+### 3、运行Prometheus.exe和eventmesh
+
+双击Prometheus.exe运行
+
+运行eventmesh-starter(参考[eventmesh-runtime-quickstart](eventmesh-runtime-quickstart.md))
+
+运行eventmesh-example(参考[eventmesh-sdk-java-quickstart](eventmesh-sdk-java-quickstart.md))
+
+打开浏览器访问：http://localhost:9090/
+
+
+
+### 4、输入你想观察的metrics
+
+输入’**eventmesh_**‘ 就会出现相关的指标的提示
+
+![promethus-search](../../images/promethus-search.png)

docs/cn/instructions/eventmesh-trace-Zipkin-instruction.md

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+## 通过Zipkin观察trace
+
+### 1、下载和运行Zipkin
+
+请参考https://zipkin.io/pages/quickstart.html
+
+
+
+### 2、运行eventmesh
+
+运行eventmesh-starter(参考[eventmesh-runtime-quickstart](eventmesh-runtime-quickstart.md))
+
+运行eventmesh-example(参考[eventmesh-sdk-java-quickstart](eventmesh-sdk-java-quickstart.md))
+
+
+
+### 3、相关的设置
+
+eventmesh-runtime/conf/eventmesh.properties中：
+
+```properties
+#trace exporter
+eventmesh.trace.exporter.type=Zipkin
+
+#set the maximum batch size to use
+eventmesh.trace.exporter.max.export.size=512
+#set the queue size. This must be >= the export batch size
+eventmesh.trace.exporter.max.queue.size=2048
+#set the max amount of time an export can run before getting(TimeUnit=SECONDS)
+eventmesh.trace.exporter.export.timeout=30
+#set time between two different exports(TimeUnit=SECONDS)
+eventmesh.trace.exporter.export.interval=5
+
+#zipkin
+eventmesh.trace.export.zipkin.ip=localhost
+eventmesh.trace.export.zipkin.port=9411
+```
+
+以上都是相关的配置，如果你十分熟悉zipkin的话可以自行修改。
+
+
+
+### 4、观察
+
+浏览器打开： **localhost:9411** 

docs/en/instructions/eventmesh-metrics-Prometheus-instruction.md

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+## Observe metrics through Prometheus
+
+### 1、download Prometheus
+Official website：https://prometheus.io/
+
+Download Prometheus locally：https://prometheus.io/download/
+
+Select the corresponding version of your computer, download and unzip it
+
+![Prometheus-download](../../images/Prometheus-download.png)
+
+### 2、In Prometheus Add configuration in YML
+
+If you are new to Prometheus, you can copy it directly： eventmesh-runtime/conf/prometheus.yml
+
+For example：this was downloaded in win-64
+
+![prometheus-yml](../../images/prometheus-yml.png)
+
+Replace the file in the red box
+
+If you know Prometheus well, you can configure it yourself. The default export port of eventmesh is 19090.
+
+
+
+ps：If the port needs to be replaced, please modify:eventmesh-runtime/conf/eventmesh.properties中的
+
+```properties
+#prometheusPort
+eventMesh.metrics.prometheus.port=19090
+```
+
+### 3、run Prometheus and eventmesh
+
+Double click Prometheus.exe startup
+
+run eventmesh-starter(reference [eventmesh-runtime-quickstart](eventmesh-runtime-quickstart.md))
+
+run eventmesh-example(reference [eventmesh-sdk-java-quickstart](eventmesh-sdk-java-quickstart.md))
+
+Open browser access：http://localhost:9090/
+
+
+
+### 4、Enter the metrics you want to observe
+
+input '**eventmesh_**' Relevant indicators will appear
+
+![promethus-search](../../images/promethus-search.png)

docs/en/instructions/eventmesh-trace-Zipkin-instruction.md

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+## Observe trace through Zipkin
+
+### 1、Download and run Zipkin
+
+Reference:https://zipkin.io/pages/quickstart.html
+
+
+
+### 2、Run eventmesh
+
+run eventmesh-starter(reference [eventmesh-runtime-quickstart](eventmesh-runtime-quickstart.md))
+
+run eventmesh-example(reference [eventmesh-sdk-java-quickstart](eventmesh-sdk-java-quickstart.md))
+
+
+
+### 3、Related settings
+
+In eventmesh-runtime/conf/eventmesh.properties：
+
+```properties
+#trace exporter
+eventmesh.trace.exporter.type=Zipkin
+
+#set the maximum batch size to use
+eventmesh.trace.exporter.max.export.size=512
+#set the queue size. This must be >= the export batch size
+eventmesh.trace.exporter.max.queue.size=2048
+#set the max amount of time an export can run before getting(TimeUnit=SECONDS)
+eventmesh.trace.exporter.export.timeout=30
+#set time between two different exports(TimeUnit=SECONDS)
+eventmesh.trace.exporter.export.interval=5
+
+#zipkin
+eventmesh.trace.export.zipkin.ip=localhost
+eventmesh.trace.export.zipkin.port=9411
+```
+
+The above are related configurations. If you are familiar with Zipkin, you can modify it yourself.
+
+
+
+### 4、Observe
+
+Open browser access： **localhost:9411**