一、簡介

很久之前寫了一篇 《.Net Core 2.0+ InfluxDB+Grafana+App Metrics 實現跨平臺的實時性能監控》關于NetCore性能監控的文章，使用Influxdb+AppMetrics進行項目性能監控，由于技術有限，在正式環境使用一段時間后，莫名的AppMetrics就沒辦法往influxdb中插入數據了，后來我也在App Metrics作者的github上留言了，并且作者也根據我闡述的情況做了測試，沒有復現我的問題，最后這個問題就不了了知了，然后項目性能監控這個事擱置了一段時間，直到2018年參加上海.net線下技術沙龍，在會場首次聽到skywalking，那時候skywalking正在做NetCore的支持，會后回到公司便開始關注skywalking，知道skywalking支持NetCore后，第一時間在公司的項目中運用了skywalking。

二、安裝環境

要想使用skywalking，首先得安裝相關環境。本文以windows為例。

1、安裝java sdk（如果不會配置java環境的話，請參考百度百科：https://jingyan.baidu.com/article/08b6a591bdb18314a80922a0.html）

2、java環境安裝完成后，下載Elasticsearch進行安裝?https://www.elastic.co/downloads/elasticsearch?（本文使用skywalking 6.x版本，6.x版本對應使用ES 6.x版本，請自行下載對應版本）

3、下載完Elasticsearch 后將Elasticsearch解壓到安裝位置，以我電腦為例，我安裝在D:\Program Files

4、修改ES配置，進入ES文件下的：\config，找到elasticsearch.yml，打開后修改如下配置：

# ======================== Elasticsearch Configuration =========================

#

# NOTE: Elasticsearch comes with reasonable defaults for most settings.

#? ? ? ?Before you set out to tweak and tune the configuration, make sure you

#? ? ? ?understand what are you trying to accomplish and the consequences.

#

# The primary way of configuring a node is via this file. This template lists

# the most important settings you may want to configure for a production cluster.

#

# Please consult the documentation for further information on configuration options:

# https://www.elastic.co/guide/en/elasticsearch/reference/index.html

#

# ---------------------------------- Cluster -----------------------------------

#

# Use a descriptive name for your cluster:

#

cluster.name: myskywalking

#

# ------------------------------------ Node ------------------------------------

#

# Use a descriptive name for the node:

#

node.name: node-1

#

# Add custom attributes to the node:

#

#node.attr.rack: r1

#

# ----------------------------------- Paths ------------------------------------

#

# Path to directory where to store the data (separate multiple locations by comma):

#

path.data: D:/Program Files/elasticsearch-6.6.2/path/to/data

#

# Path to log files:

#

path.logs: D:/Program Files/elasticsearch-6.6.2/path/to/logs

#

# ----------------------------------- Memory -----------------------------------

#

# Lock the memory on startup:

#

bootstrap.memory_lock: false

#

# Make sure that the heap size is set to about half the memory available

# on the system and that the owner of the process is allowed to use this

# limit.

#

# Elasticsearch performs poorly when the system is swapping the memory.

#

# ---------------------------------- Network -----------------------------------

#

# Set the bind address to a specific IP (IPv4 or IPv6):

#

network.host: 0.0.0.0

http.port: 9200

http.cors.enabled: true?

http.cors.allow-origin: "*"?

http.cors.allow-methods: OPTIONS,HEAD,GET,POST,PUT,DELETE

http.cors.allow-headers: "X-Requested-With, Content-Type, Content-Length, X-Users"

#

# For more information, consult the network module documentation.

#

# --------------------------------- Discovery ----------------------------------

#

# Pass an initial list of hosts to perform discovery when new node is started:

# The default list of hosts is ["127.0.0.1", "[::1]"]

#

#discovery.zen.ping.unicast.hosts: ["host1", "host2"]

#

# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):

#

#discovery.zen.minimum_master_nodes:?

#

# For more information, consult the zen discovery module documentation.

#

# ---------------------------------- Gateway -----------------------------------

#

# Block initial recovery after a full cluster restart until N nodes are started:

#

#gateway.recover_after_nodes: 3

#

# For more information, consult the gateway module documentation.

#

# ---------------------------------- Various -----------------------------------

#

# Require explicit names when deleting indices:

#

#action.destructive_requires_name: true

修改好elasticsearch.yml文件后，打開cmd命令，進入到D:\Program Files\elasticsearch-6.6.2\bin，bin文件夾下，輸入如下命令：??elasticsearch-service.bat install ?將ES安裝成windows，這樣就可以方便系統重啟后自動啟動

然后將服務啟動后即可

5、接下來下載skywalking，http://skywalking.apache.org/downloads/

選擇版本為 ：6.0.0-GA 的下載

三、配置和效果

1、在本地電腦中創建一個文件夾（注意：本人親自躺過的坑，skywalking服務必須放在無空格的文件夾，比如：Program Files這個文件是絕對不能放的，不然服務運行的時候只會一閃而過，連log日志都不會生成，切記！切記！切記！）

我在D盤下創建了一個叫skyworkingService文件，路徑如下：D:\skyworkingService

將下好的skywalking解壓到該目錄下，命名為skywalking-apm-GA，路徑如下：D:\skyworkingService\skywalking-apm-GA

接著，打開config文件，找到application.yml文件，修改其配置如下：

# Licensed to the Apache Software Foundation (ASF) under one

# or more contributor license agreements.? See the NOTICE file

# distributed with this work for additional information

# regarding copyright ownership.? The ASF licenses this file

# to you under the Apache License, Version 2.0 (the

# "License"); you may not use this file except in compliance

# with the License.? You may obtain a copy of the License at

#

#? ? ?http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

cluster:

? standalone:

? # Please check your ZooKeeper is 3.5+, However, it is also compatible with ZooKeeper 3.4.x. Replace the ZooKeeper 3.5+

? # library the oap-libs folder with your ZooKeeper 3.4.x library.

#? zookeeper:

#? ? nameSpace: ${SW_NAMESPACE:""}

#? ? hostPort: ${SW_CLUSTER_ZK_HOST_PORT:localhost:2181}

#? ? #Retry Policy

#? ? baseSleepTimeMs: ${SW_CLUSTER_ZK_SLEEP_TIME:1000} # initial amount of time to wait between retries

#? ? maxRetries: ${SW_CLUSTER_ZK_MAX_RETRIES:3} # max number of times to retry

#? kubernetes:

#? ? watchTimeoutSeconds: ${SW_CLUSTER_K8S_WATCH_TIMEOUT:60}

#? ? namespace: ${SW_CLUSTER_K8S_NAMESPACE:default}

#? ? labelSelector: ${SW_CLUSTER_K8S_LABEL:app=collector,release=skywalking}

#? ? uidEnvName: ${SW_CLUSTER_K8S_UID:SKYWALKING_COLLECTOR_UID}

#? consul:

#? ? serviceName: ${SW_SERVICE_NAME:"SkyWalking_OAP_Cluster"}

#? ? ?Consul cluster nodes, example: 10.0.0.1:8500,10.0.0.2:8500,10.0.0.3:8500

#? ? hostPort: ${SW_CLUSTER_CONSUL_HOST_PORT:localhost:8500}

core:

? default:

? ? restHost: ${SW_CORE_REST_HOST:0.0.0.0}

? ? restPort: ${SW_CORE_REST_PORT:12800}

? ? restContextPath: ${SW_CORE_REST_CONTEXT_PATH:/}

? ? gRPCHost: ${SW_CORE_GRPC_HOST:0.0.0.0}

? ? gRPCPort: ${SW_CORE_GRPC_PORT:11800}

? ? downsampling:

? ? - Hour

? ? - Day

? ? - Month

? ? # Set a timeout on metric data. After the timeout has expired, the metric data will automatically be deleted.

? ? recordDataTTL: ${SW_CORE_RECORD_DATA_TTL:90} # Unit is minute

? ? minuteMetricsDataTTL: ${SW_CORE_MINUTE_METRIC_DATA_TTL:90} # Unit is minute

? ? hourMetricsDataTTL: ${SW_CORE_HOUR_METRIC_DATA_TTL:36} # Unit is hour

? ? dayMetricsDataTTL: ${SW_CORE_DAY_METRIC_DATA_TTL:45} # Unit is day

? ? monthMetricsDataTTL: ${SW_CORE_MONTH_METRIC_DATA_TTL:18} # Unit is month

storage:

? # h2:

? ? # driver: ${SW_STORAGE_H2_DRIVER:org.h2.jdbcx.JdbcDataSource}

? ? # url: ${SW_STORAGE_H2_URL:jdbc:h2:mem:skywalking-oap-db}

? ? # user: ${SW_STORAGE_H2_USER:sa}

?elasticsearch:

? ?nameSpace: ${SW_NAMESPACE:"myskywalking"}

? ?clusterNodes: ${SW_STORAGE_ES_CLUSTER_NODES:localhost:9200}

? ?indexShardsNumber: ${SW_STORAGE_ES_INDEX_SHARDS_NUMBER:2}

? ?indexReplicasNumber: ${SW_STORAGE_ES_INDEX_REPLICAS_NUMBER:0}

? ?# Batch process setting, refer to https://www.elastic.co/guide/en/elasticsearch/client/java-api/5.5/java-docs-bulk-processor.html

? ?bulkActions: ${SW_STORAGE_ES_BULK_ACTIONS:2000} # Execute the bulk every 2000 requests

? ?bulkSize: ${SW_STORAGE_ES_BULK_SIZE:20} # flush the bulk every 20mb

? ?flushInterval: ${SW_STORAGE_ES_FLUSH_INTERVAL:10} # flush the bulk every 10 seconds whatever the number of requests

? ?concurrentRequests: ${SW_STORAGE_ES_CONCURRENT_REQUESTS:2} # the number of concurrent requests

receiver-register:

? default:

receiver-trace:

? default:

? ? bufferPath: ${SW_RECEIVER_BUFFER_PATH:../trace-buffer/}? # Path to trace buffer files, suggest to use absolute path

? ? bufferOffsetMaxFileSize: ${SW_RECEIVER_BUFFER_OFFSET_MAX_FILE_SIZE:100} # Unit is MB

? ? bufferDataMaxFileSize: ${SW_RECEIVER_BUFFER_DATA_MAX_FILE_SIZE:500} # Unit is MB

? ? bufferFileCleanWhenRestart: ${SW_RECEIVER_BUFFER_FILE_CLEAN_WHEN_RESTART:false}

? ? sampleRate: ${SW_TRACE_SAMPLE_RATE:10000} # The sample rate precision is 1/10000. 10000 means 100% sample in default.

receiver-jvm:

? default:

#service-mesh:

#? default:

#? ? bufferPath: ${SW_SERVICE_MESH_BUFFER_PATH:../mesh-buffer/}? # Path to trace buffer files, suggest to use absolute path

#? ? bufferOffsetMaxFileSize: ${SW_SERVICE_MESH_OFFSET_MAX_FILE_SIZE:100} # Unit is MB

#? ? bufferDataMaxFileSize: ${SW_SERVICE_MESH_BUFFER_DATA_MAX_FILE_SIZE:500} # Unit is MB

#? ? bufferFileCleanWhenRestart: ${SW_SERVICE_MESH_BUFFER_FILE_CLEAN_WHEN_RESTART:false}

#istio-telemetry:

#? default:

#receiver_zipkin:

#? default:

#? ? host: ${SW_RECEIVER_ZIPKIN_HOST:0.0.0.0}

#? ? port: ${SW_RECEIVER_ZIPKIN_PORT:9411}

#? ? contextPath: ${SW_RECEIVER_ZIPKIN_CONTEXT_PATH:/}

query:

? graphql:

? ? path: ${SW_QUERY_GRAPHQL_PATH:/graphql}

alarm:

? default:

telemetry:

? none:

?修改完成后，進入到bin文件中，右鍵單擊startup.bat，以管理員權限運行，即可看到如下彈框

彈出這兩個框說明服務已經啟動了

這個時候訪問http://localhost:8080，即可看到如下界面：

默認賬號admin，密碼admin，登錄后看看到想要的監控數據和各服務直接的拓撲圖，因為我的服務跑了一段時間，所以下面的界面是有數據的：

2、由于啟動skywalking后會彈出兩個命令窗口，所以如果運維人員不小心關了窗口的話服務自然就停掉了，所以為了避免這種問題，我們還可以將bin文件夾下的oapService.bat和webappService.bat進行配置，如下：

@REM

@REM? Licensed to the Apache Software Foundation (ASF) under one or more

@REM? contributor license agreements.? See the NOTICE file distributed with

@REM? this work for additional information regarding copyright ownership.

@REM? The ASF licenses this file to You under the Apache License, Version 2.0

@REM? (the "License"); you may not use this file except in compliance with

@REM? the License.? You may obtain a copy of the License at

@REM

@REM? ? ? http://www.apache.org/licenses/LICENSE-2.0

@REM

@REM? Unless required by applicable law or agreed to in writing, software

@REM? distributed under the License is distributed on an "AS IS" BASIS,

@REM? WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

@REM? See the License for the specific language governing permissions and

@REM? limitations under the License.

@echo off

setlocal

set OAP_PROCESS_TITLE=Skywalking-Collector

set OAP_HOME=%~dp0%..

set OAP_OPTS="-Xms256M -Xmx512M -Doap.logDir=%OAP_HOME%\logs"

set CLASSPATH=%OAP_HOME%\config;.;

set CLASSPATH=%OAP_HOME%\oap-libs\*;%CLASSPATH%

if defined JAVA_HOME (

?set _EXECJAVA="%JAVA_HOME%\bin\javaw"

)

if not defined JAVA_HOME (

?echo "JAVA_HOME not set."

?set _EXECJAVA=javaw

)

start "%OAP_PROCESS_TITLE%" %_EXECJAVA% "%OAP_OPTS%" -cp "%CLASSPATH%" org.apache.skywalking.oap.server.starter.OAPServerStartUp

endlocal

oapService.bat

@REM

@REM? Licensed to the Apache Software Foundation (ASF) under one or more

@REM? contributor license agreements.? See the NOTICE file distributed with

@REM? this work for additional information regarding copyright ownership.

@REM? The ASF licenses this file to You under the Apache License, Version 2.0

@REM? (the "License"); you may not use this file except in compliance with

@REM? the License.? You may obtain a copy of the License at

@REM

@REM? ? ? http://www.apache.org/licenses/LICENSE-2.0

@REM

@REM? Unless required by applicable law or agreed to in writing, software

@REM? distributed under the License is distributed on an "AS IS" BASIS,

@REM? WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

@REM? See the License for the specific language governing permissions and

@REM? limitations under the License.

@echo off

setlocal

set WEBAPP_PROCESS_TITLE=Skywalking-Webapp

set WEBAPP_HOME=%~dp0%..

set JARPATH=%WEBAPP_HOME%\webapp

set WEBAPP_LOG_DIR=%WEBAPP_HOME%\logs

if exist "%WEBAPP_LOG_DIR%" (

? ? mkdir "%WEBAPP_LOG_DIR%"

)

set LOG_FILE_LOCATION=%WEBAPP_LOG_DIR%\webapp.log

if defined JAVA_HOME (

?set _EXECJAVA="%JAVA_HOME%\bin\javaw"

)

if not defined JAVA_HOME (

?echo "JAVA_HOME not set."

?set _EXECJAVA=javaw

)

start "%WEBAPP_PROCESS_TITLE%" %_EXECJAVA%? -jar %JARPATH%/skywalking-webapp.jar --spring.config.location=%JARPATH%/webapp.yml --logging.file=%LOG_FILE_LOCATION%

endlocal

webappService.bat

其實只是將文件里的java改成了javaw，這樣就可以在后臺運行了，保存后再次運行startup.bat文件，這個時候界面上會有個cmd命令界面一閃而過，不要慌，我們打開資源管理器看看，會發現進程中多了兩個名為“javaw.exe”的進程

這個時候訪問：http://localhost:8080 一樣可以看到上面的ui界面！

至此，skywalking的所有環境皆搭建完畢，接下來，在我們項目中添加skywalking的探針，方便skywalking收集我們項目中的數據

四、項目引用skywalking探針

新建一個NetCore的webapi，然后在引用中引用SkyWalking.AspNetCore，如圖：

項目引用后，在Startup.cs中注入skywalking。

在頭部引用：using SkyWalking.AspNetCore;

然后找到public void ConfigureServices(IServiceCollection services)下輸入一下代碼即可：

services.AddSkyWalking(option =>
{
option.ApplicationCode = "AreaServer";
option.DirectServers = 127.0.0.1:11800;
});

運行代碼后，控制臺內每隔幾秒就會有以下信息輸出

證明skywalking探針已經成功，接下來請求一下你的接口，然后進入skywalking的ui中看看你的成果吧！

原文地址：https://www.cnblogs.com/landonzeng/p/10616644.html

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