一、简介
很久之前写了一篇 《.Net Core 2.0+ InfluxDB+Grafana+App Metrics 实现跨平台的实时性能监控》关于NetCore性能监控的文章，使用Influxdb+AppMetrics进行项目性能监控，由于技术有限，在正式环境使用一段时间后，莫名的AppMetrics就没办法往influxdb中插入数据了，后来我也在App Metrics作者的github上留言了，并且作者也根据我阐述的情况做了测试，没有复现我的问题，最后这个问题就不了了知了，然后项目性能监控这个事搁置了一段时间，直到2018年参加上海.net线下技术沙龙，在会场首次听到skywalking，那时候skywalking正在做NetCore的支持，会后回到公司便开始关注skywalking，知道skywalking支持NetCore后，第一时间在公司的项目中运用了skywalking。
二、安装环境
要想使用skywalking，首先得安装相关环境。本文以windows为例。
1、安装java sdk（如果不会配置java环境的话，请参考百度百科：https://jingyan.baidu.com/article/08b6a591bdb18314a80922a0.html）
2、java环境安装完成后，下载Elasticsearch进行安装 https://www.elastic.co/downloads/elasticsearch （本文使用skywalking 6.x版本，6.x版本对应使用ES 6.x版本，请自行下载对应版本）
3、下载完Elasticsearch 后将Elasticsearch解压到安装位置，以我电脑为例，我安装在D:\Program Files
4、修改ES配置，进入ES文件下的：\config，找到elasticsearch.yml，打开后修改如下配置：
1 # ======================== Elasticsearch Configuration ========================= 2 # 3 # NOTE: Elasticsearch comes with reasonable defaults for most settings. 4 # Before you set out to tweak and tune the configuration, make sure you 5 # understand what are you trying to accomplish and the consequences. 6 # 7 # The primary way of configuring a node is via this file. This template lists 8 # the most important settings you may want to configure for a production cluster. 9 # 10 # Please consult the documentation for further information on configuration options: 11 # https://www.elastic.co/guide/en/elasticsearch/reference/index.html 12 # 13 # ---------------------------------- Cluster ----------------------------------- 14 # 15 # Use a descriptive name for your cluster: 16 # 17 cluster.name: myskywalking 18 # 19 # ------------------------------------ Node ------------------------------------ 20 # 21 # Use a descriptive name for the node: 22 # 23 node.name: node-1 24 # 25 # Add custom attributes to the node: 26 # 27 #node.attr.rack: r1 28 # 29 # ----------------------------------- Paths ------------------------------------ 30 # 31 # Path to directory where to store the data (separate multiple locations by comma): 32 # 33 path.data: D:/Program Files/elasticsearch-6.6.2/path/to/data 34 # 35 # Path to log files: 36 # 37 path.logs: D:/Program Files/elasticsearch-6.6.2/path/to/logs 38 # 39 # ----------------------------------- Memory ----------------------------------- 40 # 41 # Lock the memory on startup: 42 # 43 bootstrap.memory_lock: false 44 # 45 # Make sure that the heap size is set to about half the memory available 46 # on the system and that the owner of the process is allowed to use this 47 # limit. 48 # 49 # Elasticsearch performs poorly when the system is swapping the memory. 50 # 51 # ---------------------------------- Network ----------------------------------- 52 # 53 # Set the bind address to a specific IP (IPv4 or IPv6): 54 # 55 network.host: 0.0.0.0 56 http.port: 9200 57 http.cors.enabled: true 58 http.cors.allow-origin: "*" 59 http.cors.allow-methods: OPTIONS,HEAD,GET,POST,PUT,DELETE 60 http.cors.allow-headers: "X-Requested-With, Content-Type, Content-Length, X-Users" 61 62 # 63 # For more information, consult the network module documentation. 64 # 65 # --------------------------------- Discovery ---------------------------------- 66 # 67 # Pass an initial list of hosts to perform discovery when new node is started: 68 # The default list of hosts is ["127.0.0.1", "[::1]"] 69 # 70 #discovery.zen.ping.unicast.hosts: ["host1", "host2"] 71 # 72 # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1): 73 # 74 #discovery.zen.minimum_master_nodes: 75 # 76 # For more information, consult the zen discovery module documentation. 77 # 78 # ---------------------------------- Gateway ----------------------------------- 79 # 80 # Block initial recovery after a full cluster restart until N nodes are started: 81 # 82 #gateway.recover_after_nodes: 3 83 # 84 # For more information, consult the gateway module documentation. 85 # 86 # ---------------------------------- Various ----------------------------------- 87 # 88 # Require explicit names when deleting indices: 89 # 90 #action.destructive_requires_name: trueView Code
修改好elasticsearch.yml文件后，打开cmd命令，进入到D:\Program Files\elasticsearch-6.6.2\bin，bin文件夹下，输入如下命令： elasticsearch-service.bat install 将ES安装成windows，这样就可以方便系统重启后自动启动
然后将服务启动后即可
5、接下来下载skywalking，http://skywalking.apache.org/downloads/
选择版本为 ：6.0.0-GA 的下载
三、配置和效果
1、在本地电脑中创建一个文件夹（注意：本人亲自躺过的坑，skywalking服务必须放在无空格的文件夹，比如：Program Files这个文件是绝对不能放的，不然服务运行的时候只会一闪而过，连log日志都不会生成，切记！切记！切记！）
我在D盘下创建了一个叫skyworkingService文件，路径如下：D:\skyworkingService
将下好的skywalking解压到该目录下，命名为skywalking-apm-GA，路径如下：D:\skyworkingService\skywalking-apm-GA
接着，打开config文件，找到application.yml文件，修改其配置如下：
1 # Licensed to the Apache Software Foundation (ASF) under one
2 # or more contributor license agreements. See the NOTICE file
3 # distributed with this work for additional information
4 # regarding copyright ownership. The ASF licenses this file
5 # to you under the Apache License, Version 2.0 (the
6 # "License"); you may not use this file except in compliance
7 # with the License. You may obtain a copy of the License at
8 #
9 # http://www.apache.org/licenses/LICENSE-2.0
10 #
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
16
17 cluster:
18 standalone:
19 # Please check your ZooKeeper is 3.5+, However, it is also compatible with ZooKeeper 3.4.x. Replace the ZooKeeper 3.5+
20 # library the oap-libs folder with your ZooKeeper 3.4.x library.
21 # zookeeper:
22 # nameSpace: ${SW_NAMESPACE:""}
23 # hostPort: ${SW_CLUSTER_ZK_HOST_PORT:localhost:2181}
24 # #Retry Policy
25 # baseSleepTimeMs: ${SW_CLUSTER_ZK_SLEEP_TIME:1000} # initial amount of time to wait between retries
26 # maxRetries: ${SW_CLUSTER_ZK_MAX_RETRIES:3} # max number of times to retry
27 # kubernetes:
28 # watchTimeoutSeconds: ${SW_CLUSTER_K8S_WATCH_TIMEOUT:60}
29 # namespace: ${SW_CLUSTER_K8S_NAMESPACE:default}
30 # labelSelector: ${SW_CLUSTER_K8S_LABEL:app=collector,release=skywalking}
31 # uidEnvName: ${SW_CLUSTER_K8S_UID:SKYWALKING_COLLECTOR_UID}
32 # consul:
33 # serviceName: ${SW_SERVICE_NAME:"SkyWalking_OAP_Cluster"}
34 # Consul cluster nodes, example: 10.0.0.1:8500,10.0.0.2:8500,10.0.0.3:8500
35 # hostPort: ${SW_CLUSTER_CONSUL_HOST_PORT:localhost:8500}
36 core:
37 default:
38 restHost: ${SW_CORE_REST_HOST:0.0.0.0}
39 restPort: ${SW_CORE_REST_PORT:12800}
40 restContextPath: ${SW_CORE_REST_CONTEXT_PATH:/}
41 gRPCHost: ${SW_CORE_GRPC_HOST:0.0.0.0}
42 gRPCPort: ${SW_CORE_GRPC_PORT:11800}
43 downsampling:
44 - Hour
45 - Day
46 - Month
47 # Set a timeout on metric data. After the timeout has expired, the metric data will automatically be deleted.
48 recordDataTTL: ${SW_CORE_RECORD_DATA_TTL:90} # Unit is minute
49 minuteMetricsDataTTL: ${SW_CORE_MINUTE_METRIC_DATA_TTL:90} # Unit is minute
50 hourMetricsDataTTL: ${SW_CORE_HOUR_METRIC_DATA_TTL:36} # Unit is hour
51 dayMetricsDataTTL: ${SW_CORE_DAY_METRIC_DATA_TTL:45} # Unit is day
52 monthMetricsDataTTL: ${SW_CORE_MONTH_METRIC_DATA_TTL:18} # Unit is month
53 storage:
54 # h2:
55 # driver: ${SW_STORAGE_H2_DRIVER:org.h2.jdbcx.JdbcDataSource}
56 # url: ${SW_STORAGE_H2_URL:jdbc:h2:mem:skywalking-oap-db}
57 # user: ${SW_STORAGE_H2_USER:sa}
58 elasticsearch:
59 nameSpace: ${SW_NAMESPACE:"myskywalking"}
60 clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:localhost:9200}
61 indexShardsNumber: ${SW_STORAGE_ES_INDEX_SHARDS_NUMBER:2}
62 indexReplicasNumber: ${SW_STORAGE_ES_INDEX_REPLICAS_NUMBER:0}
63 # Batch process setting, refer to https://www.elastic.co/guide/en/elasticsearch/client/java-api/5.5/java-docs-bulk-processor.html
64 bulkActions: ${SW_STORAGE_ES_BULK_ACTIONS:2000} # Execute the bulk every 2000 requests
65 bulkSize: ${SW_STORAGE_ES_BULK_SIZE:20} # flush the bulk every 20mb
66 flushInterval: ${SW_STORAGE_ES_FLUSH_INTERVAL:10} # flush the bulk every 10 seconds whatever the number of requests
67 concurrentRequests: ${SW_STORAGE_ES_CONCURRENT_REQUESTS:2} # the number of concurrent requests
68 receiver-register:
69 default:
70 receiver-trace:
71 default:
72 bufferPath: ${SW_RECEIVER_BUFFER_PATH:../trace-buffer/} # Path to trace buffer files, suggest to use absolute path
73 bufferOffsetMaxFileSize: ${SW_RECEIVER_BUFFER_OFFSET_MAX_FILE_SIZE:100} # Unit is MB
74 bufferDataMaxFileSize: ${SW_RECEIVER_BUFFER_DATA_MAX_FILE_SIZE:500} # Unit is MB
75 bufferFileCleanWhenRestart: ${SW_RECEIVER_BUFFER_FILE_CLEAN_WHEN_RESTART:false}
76 sampleRate: ${SW_TRACE_SAMPLE_RATE:10000} # The sample rate precision is 1/10000. 10000 means 100% sample in default.
77 receiver-jvm:
78 default:
79 #service-mesh:
80 # default:
81 # bufferPath: ${SW_SERVICE_MESH_BUFFER_PATH:../mesh-buffer/} # Path to trace buffer files, suggest to use absolute path
82 # bufferOffsetMaxFileSize: ${SW_SERVICE_MESH_OFFSET_MAX_FILE_SIZE:100} # Unit is MB
83 # bufferDataMaxFileSize: ${SW_SERVICE_MESH_BUFFER_DATA_MAX_FILE_SIZE:500} # Unit is MB
84 # bufferFileCleanWhenRestart: ${SW_SERVICE_MESH_BUFFER_FILE_CLEAN_WHEN_RESTART:false}
85 #istio-telemetry:
86 # default:
87 #receiver_zipkin:
88 # default:
89 # host: ${SW_RECEIVER_ZIPKIN_HOST:0.0.0.0}
90 # port: ${SW_RECEIVER_ZIPKIN_PORT:9411}
91 # contextPath: ${SW_RECEIVER_ZIPKIN_CONTEXT_PATH:/}
92 query:
93 graphql:
94 path: ${SW_QUERY_GRAPHQL_PATH:/graphql}
95 alarm:
96 default:
97 telemetry:
98 none:
View Code
修改完成后，进入到bin文件中，右键单击startup.bat，以管理员权限运行，即可看到如下弹框
弹出这两个框说明服务已经启动了
这个时候访问http://localhost:8080，即可看到如下界面：
默认账号admin，密码admin，登录后看看到想要的监控数据和各服务直接的拓扑图，因为我的服务跑了一段时间，所以下面的界面是有数据的：
2、由于启动skywalking后会弹出两个命令窗口，所以如果运维人员不小心关了窗口的话服务自然就停掉了，所以为了避免这种问题，我们还可以将bin文件夹下的oapService.bat和webappService.bat进行配置，如下：
1 @REM 2 @REM Licensed to the Apache Software Foundation (ASF) under one or more 3 @REM contributor license agreements. See the NOTICE file distributed with 4 @REM this work for additional information regarding copyright ownership. 5 @REM The ASF licenses this file to You under the Apache License, Version 2.0 6 @REM (the "License"); you may not use this file except in compliance with 7 @REM the License. You may obtain a copy of the License at 8 @REM 9 @REM http://www.apache.org/licenses/LICENSE-2.0 10 @REM 11 @REM Unless required by applicable law or agreed to in writing, software 12 @REM distributed under the License is distributed on an "AS IS" BASIS, 13 @REM WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 @REM See the License for the specific language governing permissions and 15 @REM limitations under the License. 16 17 @echo off 18 19 setlocal 20 set OAP_PROCESS_TITLE=Skywalking-Collector 21 set OAP_HOME=%~dp0%.. 22 set OAP_OPTS="-Xms256M -Xmx512M -Doap.logDir=%OAP_HOME%\logs" 23 24 set CLASSPATH=%OAP_HOME%\config;.; 25 set CLASSPATH=%OAP_HOME%\oap-libs\*;%CLASSPATH% 26 27 if defined JAVA_HOME ( 28 set _EXECJAVA="%JAVA_HOME%\bin\javaw" 29 ) 30 31 if not defined JAVA_HOME ( 32 echo "JAVA_HOME not set." 33 set _EXECJAVA=javaw 34 ) 35 36 start "%OAP_PROCESS_TITLE%" %_EXECJAVA% "%OAP_OPTS%" -cp "%CLASSPATH%" org.apache.skywalking.oap.server.starter.OAPServerStartUp 37 endlocaloapService.bat
1 @REM 2 @REM Licensed to the Apache Software Foundation (ASF) under one or more 3 @REM contributor license agreements. See the NOTICE file distributed with 4 @REM this work for additional information regarding copyright ownership. 5 @REM The ASF licenses this file to You under the Apache License, Version 2.0 6 @REM (the "License"); you may not use this file except in compliance with 7 @REM the License. You may obtain a copy of the License at 8 @REM 9 @REM http://www.apache.org/licenses/LICENSE-2.0 10 @REM 11 @REM Unless required by applicable law or agreed to in writing, software 12 @REM distributed under the License is distributed on an "AS IS" BASIS, 13 @REM WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 @REM See the License for the specific language governing permissions and 15 @REM limitations under the License. 16 17 @echo off 18 19 setlocal 20 set WEBAPP_PROCESS_TITLE=Skywalking-Webapp 21 set WEBAPP_HOME=%~dp0%.. 22 set JARPATH=%WEBAPP_HOME%\webapp 23 set WEBAPP_LOG_DIR=%WEBAPP_HOME%\logs 24 25 if exist "%WEBAPP_LOG_DIR%" ( 26 mkdir "%WEBAPP_LOG_DIR%" 27 ) 28 29 set LOG_FILE_LOCATION=%WEBAPP_LOG_DIR%\webapp.log 30 31 if defined JAVA_HOME ( 32 set _EXECJAVA="%JAVA_HOME%\bin\javaw" 33 ) 34 35 if not defined JAVA_HOME ( 36 echo "JAVA_HOME not set." 37 set _EXECJAVA=javaw 38 ) 39 40 start "%WEBAPP_PROCESS_TITLE%" %_EXECJAVA% -jar %JARPATH%/skywalking-webapp.jar --spring.config.location=%JARPATH%/webapp.yml --logging.file=%LOG_FILE_LOCATION% 41 endlocalwebappService.bat
其实只是将文件里的java改成了javaw，这样就可以在后台运行了，保存后再次运行startup.bat文件，这个时候界面上会有个cmd命令界面一闪而过，不要慌，我们打开资源管理器看看，会发现进程中多了两个名为“javaw.exe”的进程
这个时候访问：http://localhost:8080 一样可以看到上面的ui界面！
至此，skywalking的所有环境皆搭建完毕，接下来，在我们项目中添加skywalking的探针，方便skywalking收集我们项目中的数据
四、项目引用skywalking探针
新建一个NetCore的webapi，然后在引用中引用SkyWalking.AspNetCore，如图：
项目引用后，在Startup.cs中注入skywalking。
在头部引用：using SkyWalking.AspNetCore;
然后找到public void ConfigureServices(IServiceCollection services)下输入一下代码即可：
1 services.AddSkyWalking(option =>
2 {
3 option.ApplicationCode = "AreaServer";
4 option.DirectServers = 127.0.0.1:11800;
5 });
View Code
运行代码后，控制台内每隔几秒就会有以下信息输出
证明skywalking探针已经成功，接下来请求一下你的接口，然后进入skywalking的ui中看看你的成果吧！