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                **背景:** 微服務架構是通過業務來劃分服務的,使用 REST 調用。對外暴露的一個接口,可能需要很多個服務協同才能完成這個接口功能,如果鏈路上任何一個服務出現問題或者網絡超時,都會形成導致接口調用失敗。為了在發生故障的時候,能夠快速定位和解決問題,需要使用SkyWalking --- **環境:** windows JDK8 --- **開發工具:** idea --- **軟件安裝:** 1.[下載elasticsearch7](https://www.elastic.co/cn/downloads/elasticsearch) ![](https://img.kancloud.cn/4b/a9/4ba93afd2cead67c63ec5308e0a82d38_1347x545.png) 2.解壓 運行bin/elasticsearch.bat 3.訪問 `localhost:9200` 如下結果表示OK ``` ~~~ { "name" : "xxxx", "cluster_name" : "elasticsearch", "cluster_uuid" : "xxxx", "version" : { "number" : "7.7.1", "build_flavor" : "default", "build_type" : "zip", "build_hash" : "xxxxx", "build_date" : "2020-05-28T16:30:01.040088Z", "build_snapshot" : false, "lucene_version" : "8.5.1", "minimum_wire_compatibility_version" : "6.8.0", "minimum_index_compatibility_version" : "6.0.0-beta1" }, "tagline" : "You Know, for Search" } ~~~ ``` 4.[下載skywarking](http://skywalking.apache.org/downloads/) ![](https://img.kancloud.cn/4a/95/4a958e3ac2a6b8b855d3854e3dedb8d5_1576x668.png) --- 5.解壓 運行 bin/startup.bat,這個時候實際上是啟動了兩個項目,一個收集器,一個web頁面 ---- 6.訪問`localhost:8080`,端口號webapp/webapp.yml中可以修改,第一次訪問頁面空白正常 ![](https://img.kancloud.cn/48/34/4834c17a446ac85e8556f09b4f98cdb4_1907x765.png) ---- 7.在項目根目錄下創建目錄 jeecg-skywarking,并且將skywarking下的agent文件夾直接拷貝至該目錄下 ![](https://img.kancloud.cn/dc/ee/dceeef8af5df94ef72ba1841f5e8e77c_548x443.png) ---- 8.配置vm參數 ![](https://img.kancloud.cn/69/1a/691ad4c90d9c3ba77ddaedb4c5fc51be_373x205.png) ![](https://img.kancloud.cn/5e/bc/5ebc7675a8448465727607e36a4dab0a_1139x460.png) --- eclipse配置vm參數圖: ![](https://img.kancloud.cn/44/a3/44a3eb8cb82c934825dd3ec4ecd84778_1232x909.png) ---- 附上參數代碼及描述 ``` -javaagent:D:\JAVA\cloud\jeecg-yanshi\jeecg-skywarking\agent\skywalking-agent.jar -Dskywalking.agent.service_name=jeecg-ys-gateway -Dskywalking.collector.backend_service=localhost:11800 ``` | 參數 | 描述 | | --- | --- | | javaagent | 配置 skywalking-agent.jar 的地址,需要修改 | | service_name| 配置 需要監控的服務名,需要修改 | | javaagent | skywalking收集器服務的地址,照抄 | ---- 9.啟動項目,訪問接口(多訪問幾次),再去localhost:8080看面板數據 ![](https://img.kancloud.cn/48/34/4834c17a446ac85e8556f09b4f98cdb4_1907x765.png) ---- 10.當我們訪問一個服務,而他會調用另一個服務的時候,點擊拓撲圖會出現下圖的效果,這就是鏈路跟蹤的效果 ![](https://img.kancloud.cn/91/94/9194550ffabe463d90ead8a132ca97ba_1703x550.png) ---- 11.還可以在追蹤界面,查看整個請求的具體調用鏈 ![](https://img.kancloud.cn/8a/ac/8aac50e29392c43699b87fe30872add6_1906x733.png) --- *其他功能需自行摸索*
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