最牛逼的性能監(jiān)控系統(tǒng)！集強大功能于一身
今日推薦
SkyWalking 是一個應用性能監(jiān)控系統(tǒng)，特別為微服務、云原生和基于容器（Docker, Kubernetes, Mesos）體系結(jié)構(gòu)而設計。除了應用指標監(jiān)控以外，它還能對分布式調(diào)用鏈路進行追蹤。類似功能的組件還有：Zipkin、Pinpoint、CAT等。
上幾張圖，看看效果，然后再一步一步搭建并使用：
概念與架構(gòu)
SkyWalking 是一個開源監(jiān)控平臺，用于從服務和云原生基礎(chǔ)設施收集、分析、聚合和可視化數(shù)據(jù)。SkyWalking提供了一種簡單的方法來維護分布式系統(tǒng)的清晰視圖，甚至可以跨云查看。它是一種現(xiàn)代APM，專門為云原生、基于容器的分布式系統(tǒng)設計。
SkyWalking 從三個維度對應用進行監(jiān)視：service（服務）, service instance（實例）, endpoint（端點）
服務和實例就不多說了，端點是服務中的某個路徑或者說URI
SkyWalking allows users to understand the topology relationship between Services and Endpoints, to view the metrics of every Service/Service Instance/Endpoint and to set alarm rules.
SkyWalking允許用戶了解服務和端點之間的拓撲關(guān)系，查看每個服務/服務實例/端點的度量，并設置警報規(guī)則。
架構(gòu)
SkyWalking邏輯上分為四個部分：Probes（探針）, Platform backend（平臺后端）, Storage（存儲）, UI。
這個結(jié)構(gòu)就很清晰了，探針就是Agent負責采集數(shù)據(jù)并上報給服務端，服務端對數(shù)據(jù)進行處理和存儲，UI負責展示。
下載與安裝
SkyWalking有兩中版本，ES版本和非ES版。如果我們決定采用ElasticSearch作為存儲，那么就下載es版本。
https://skywalking.apache.org/downloads/ https://archive.apache.org/dist/skywalking/
agent目錄將來要拷貝到各服務所在機器上用作探針 bin目錄是服務啟動腳本 config目錄是配置文件 oap-libs目錄是oap服務運行所需的jar包 webapp目錄是web服務運行所需的jar包
接下來，要選擇存儲了，支持的存儲有：
H2 ElasticSearch 6, 7 MySQL TiDB InfluxDB
作為監(jiān)控系統(tǒng)，首先排除H2和MySQL，這里推薦InfluxDB，它本身就是時序數(shù)據(jù)庫，非常適合這種場景
但是InfluxDB我不是很熟悉，所以這里先用ElasticSearch7
https://github.com/apache/skywalking/blob/master/docs/en/setup/backend/backend-storage.md
安裝ElasticSearch
https://www.elastic.co/guide/en/elasticsearch/reference/7.10/targz.html
#?啟動
./bin/elasticsearch?-d?-p?pid
#?停止
pkill?-F?pid
ElasticSearch7.x需要Java 11以上的版本，但是如果你設置了環(huán)境變量JAVA_HOME的話，它會用你自己的Java版本
通常，啟動過程中會報以下三個錯誤：
[1]:?max?file?descriptors?[4096]?for?elasticsearch?process?is?too?low,?increase?to?at?least?[65535]
[2]:?max?virtual?memory?areas?vm.max_map_count?[65530]?is?too?low,?increase?to?at?least?[262144]
[3]:?the?default?discovery?settings?are?unsuitable?for?production?use;?at?least?one?of?[discovery.seed_hosts,?discovery.seed_providers,?cluster.initial_master_nodes]?must?be?configured
解決方法：在 /etc/security/limits.conf 文件中追加以下內(nèi)容：
*?soft?nofile?65536
*?hard?nofile?65536
*?soft?nproc??4096
*?hard?nproc??4096
可通過以下四個命令查看修改結(jié)果：
ulimit?-Hn
ulimit?-Sn
ulimit?-Hu
ulimit?-Su
修改 /etc/sysctl.conf 文件，追加以下內(nèi)容：
vm.max_map_count=262144
修改es配置文件 elasticsearch.yml 取消注釋，保留一個節(jié)點
cluster.initial_master_nodes:?["node-1"]
為了能夠ip:port方式訪問，還需修改網(wǎng)絡配置
network.host:?0.0.0.0
修改完是這樣的：
至此，ElasticSearch算是啟動成功了，一個節(jié)點還不夠，這里用三個節(jié)點搭建一個集群
192.168.100.14 ?config/elasticsearch.yml
cluster.name:?my-monitor
node.name:?node-1
network.host:?192.168.100.14
http.port:?9200
discovery.seed_hosts:?["192.168.100.14:9300",?"192.168.100.15:9300",?"192.168.100.19:9300"]
cluster.initial_master_nodes:?["node-1"]
192.168.100.15??config/elasticsearch.yml
cluster.name:?my-monitor
node.name:?node-2
network.host:?192.168.100.15
http.port:?9200
discovery.seed_hosts:?["192.168.100.14:9300",?"192.168.100.15:9300",?"192.168.100.19:9300"]
cluster.initial_master_nodes:?["node-1"]
192.168.100.19??config/elasticsearch.yml
cluster.name:?my-monitor
node.name:?node-3
network.host:?192.168.100.19
http.port:?9200
discovery.seed_hosts:?["192.168.100.14:9300",?"192.168.100.15:9300",?"192.168.100.19:9300"]
cluster.initial_master_nodes:?["node-1"]
同時，建議修改三個節(jié)點config/jvm.options
-Xms2g
-Xmx2g
依次啟動三個節(jié)點
pkill?-F?pid
./bin/elasticsearch?-d?-p?pid
接下來，修改skywalking下config/application.yml 中配置es地址即可
storage:
??selector:?${SW_STORAGE:elasticsearch7}
??elasticsearch7:
????nameSpace:?${SW_NAMESPACE:""}
????clusterNodes:?${SW_STORAGE_ES_CLUSTER_NODES:192.168.100.14:9200,192.168.100.15:9200,192.168.100.19:9200}
安裝Agent
https://github.com/apache/skywalking/blob/v8.2.0/docs/en/setup/service-agent/java-agent/README.md
將agent目錄拷貝至各服務所在的機器上
scp?-r?./[email protected]:~/
這里，我將它拷貝至各個服務目錄下
plugins是探針用到各種插件，SkyWalking插件都是即插即用的，可以把optional-plugins中的插件放到plugins中，修改 agent/config/agent.config 配置文件，也可以通過命令行參數(shù)指定。
主要是配置服務名稱和后端服務地址
agent.service_name=${SW_AGENT_NAME:user-center}
collector.backend_service=${SW_AGENT_COLLECTOR_BACKEND_SERVICES:192.168.100.17:11800}
當然，也可以通過環(huán)境變量或系統(tǒng)屬性的方式來設置，例如：
export?SW_AGENT_COLLECTOR_BACKEND_SERVICES=127.0.0.1:11800
最后，在服務啟動的時候用命令行參數(shù) -javaagent 來指定探針
java?-javaagent:/path/to/skywalking-agent/skywalking-agent.jar?-jar?yourApp.jar
例如：
java?-javaagent:./agent/skywalking-agent.jar?-Dspring.profiles.active=dev?-Xms512m?-Xmx1024m?-jar?demo-0.0.1-SNAPSHOT.jar
啟動服務
修改 webapp/webapp.yml 文件，更改端口號及后端服務地址
server:
??port:?9000
collector:
??path:?/graphql
??ribbon:
????ReadTimeout:?10000
????#?Point?to?all?backend's?restHost:restPort,?split?by?,
????listOfServers:?127.0.0.1:12800
啟動服務
bin/startup.sh
或者分別依次啟動
bin/oapService.sh
bin/webappService.sh
查看logs目錄下的日志文件，看是否啟動成功，瀏覽器訪問 http://127.0.0.1:9000。
告警
編輯 alarm-settings.yml 設置告警規(guī)則和通知
https://github.com/apache/skywalking/blob/v8.2.0/docs/en/setup/backend/backend-alarm.md
重點說下告警通知
為了使用釘釘機器人通知，接下來，新建一個項目
"1.0"?encoding="UTF-8"?>
"http://maven.apache.org/POM/4.0.0"?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
?????????xsi:schemaLocation="http://maven.apache.org/POM/4.0.0?https://maven.apache.org/xsd/maven-4.0.0.xsd">
????4.0.0
????
????????org.springframework.boot
????????spring-boot-starter-parent
????????2.4.0
????????
????
????com.wt.monitor
????skywalking-alarm
????1.0.0-SNAPSHOT
????skywalking-alarm
????
????????1.8
????
????
????????
????????????org.springframework.boot
????????????spring-boot-starter-web
????????
????????
????????????com.aliyun
????????????alibaba-dingtalk-service-sdk
????????????1.0.1
????????
????????
????????????commons-codec
????????????commons-codec
????????????1.15
????????
????????
????????????com.alibaba
????????????fastjson
????????????1.2.75
????????
????????
????????????org.projectlombok
????????????lombok
????????????true
????????
????
????
????????
????????????
????????????????org.springframework.boot
????????????????spring-boot-maven-plugin
????????????
????????
????
可選依賴（不建議引入）
????org.apache.skywalking
????server-core
????8.2.0
定義告警消息實體類
package?com.wt.monitor.skywalking.alarm.domain;
import?lombok.Data;
import?java.io.Serializable;
/**
?*?@author?ChengJianSheng
?*?@date?2020/12/1
?*/
@Data
public?class?AlarmMessageDTO?implements?Serializable?{
????private?int?scopeId;
????private?String?scope;
????/**
?????*?Target?scope?entity?name
?????*/
????private?String?name;
????private?String?id0;
????private?String?id1;
????private?String?ruleName;
????/**
?????*?Alarm?text?message
?????*/
????private?String?alarmMessage;
????/**
?????*?Alarm?time?measured?in?milliseconds
?????*/
????private?long?startTime;
}
發(fā)送釘釘機器人消息
package?com.wt.monitor.skywalking.alarm.service;
import?com.dingtalk.api.DefaultDingTalkClient;
import?com.dingtalk.api.DingTalkClient;
import?com.dingtalk.api.request.OapiRobotSendRequest;
import?com.taobao.api.ApiException;
import?lombok.extern.slf4j.Slf4j;
import?org.apache.commons.codec.binary.Base64;
import?org.springframework.beans.factory.annotation.Value;
import?org.springframework.stereotype.Service;
import?javax.crypto.Mac;
import?javax.crypto.spec.SecretKeySpec;
import?java.io.UnsupportedEncodingException;
import?java.net.URLEncoder;
import?java.security.InvalidKeyException;
import?java.security.NoSuchAlgorithmException;
/**
?*?https://ding-doc.dingtalk.com/doc#/serverapi2/qf2nxq
?*?@author?ChengJianSheng
?*?@data?2020/12/1
?*/
@Slf4j
@Service
public?class?DingTalkAlarmService?{
????@Value("${dingtalk.webhook}")
????private?String?webhook;
????@Value("${dingtalk.secret}")
????private?String?secret;
????public?void?sendMessage(String?content)?{
????????try?{
????????????Long?timestamp?=?System.currentTimeMillis();
????????????String?stringToSign?=?timestamp?+?"\n"?+?secret;
????????????Mac?mac?=?Mac.getInstance("HmacSHA256");
????????????mac.init(new?SecretKeySpec(secret.getBytes("UTF-8"),?"HmacSHA256"));
????????????byte[]?signData?=?mac.doFinal(stringToSign.getBytes("UTF-8"));
????????????String?sign?=?URLEncoder.encode(new?String(Base64.encodeBase64(signData)),"UTF-8");
????????????String?serverUrl?=?webhook?+?"×tamp="?+?timestamp?+?"&sign="?+?sign;
????????????DingTalkClient?client?=?new?DefaultDingTalkClient(serverUrl);
????????????OapiRobotSendRequest?request?=?new?OapiRobotSendRequest();
????????????request.setMsgtype("text");
????????????OapiRobotSendRequest.Text?text?=?new?OapiRobotSendRequest.Text();
????????????text.setContent(content);
????????????request.setText(text);
????????????client.execute(request);
????????}?catch?(ApiException?e)?{
????????????e.printStackTrace();
????????????log.error(e.getMessage(),?e);
????????}?catch?(NoSuchAlgorithmException?e)?{
????????????e.printStackTrace();
????????????log.error(e.getMessage(),?e);
????????}?catch?(UnsupportedEncodingException?e)?{
????????????e.printStackTrace();
????????????log.error(e.getMessage(),?e);
????????}?catch?(InvalidKeyException?e)?{
????????????e.printStackTrace();
????????????log.error(e.getMessage(),?e);
????????}
????}
}
AlarmController.java
package?com.wt.monitor.skywalking.alarm.controller;
import?com.alibaba.fastjson.JSON;
import?com.wt.monitor.skywalking.alarm.domain.AlarmMessageDTO;
import?com.wt.monitor.skywalking.alarm.service.DingTalkAlarmService;
import?lombok.extern.slf4j.Slf4j;
import?org.springframework.beans.factory.annotation.Autowired;
import?org.springframework.web.bind.annotation.PostMapping;
import?org.springframework.web.bind.annotation.RequestBody;
import?org.springframework.web.bind.annotation.RequestMapping;
import?org.springframework.web.bind.annotation.RestController;
import?java.text.MessageFormat;
import?java.util.List;
/**
?*?@author?ChengJianSheng
?*?@date?2020/12/1
?*/
@Slf4j
@RestController
@RequestMapping("/skywalking")
public?class?AlarmController?{
????@Autowired
????private?DingTalkAlarmService?dingTalkAlarmService;
????@PostMapping("/alarm")
????public?void?alarm(@RequestBody?List?alarmMessageDTOList) ?{
???????log.info("收到告警信息:?{}",?JSON.toJSONString(alarmMessageDTOList));
???????if?(null?!=?alarmMessageDTOList)?{
???????????alarmMessageDTOList.forEach(e->dingTalkAlarmService.sendMessage(MessageFormat.format("-----來自SkyWalking的告警-----\n【名稱】:?{0}\n【消息】:?{1}\n",?e.getName(),?e.getAlarmMessage())));
???????}
????}
}
作者：廢物大師兄?
https://www.cnblogs.com/cjsblog/p/14075486.html
推薦文章
1、一款高顏值的 SpringBoot+JPA 博客項目 2、超優(yōu) Vue+Element+Spring 中后端解決方案 3、推薦幾個支付項目！ 4、推薦一個 Java 企業(yè)信息化系統(tǒng) 5、一款基于 Spring Boot 的現(xiàn)代化社區(qū)（論壇/問答/社交網(wǎng)絡/博客）