SpringBoot + Prometheus + Grafana 打造可视化监控一条龙！真的太顶了！
java版web项目 文章源自JAVA秀-https://www.javaxiu.com/66688.html
收录于合集文章源自JAVA秀-https://www.javaxiu.com/66688.html
#java版web项目296文章源自JAVA秀-https://www.javaxiu.com/66688.html
#SpringBoot11文章源自JAVA秀-https://www.javaxiu.com/66688.html
#服务监控1文章源自JAVA秀-https://www.javaxiu.com/66688.html
大家好，我是老赵！文章源自JAVA秀-https://www.javaxiu.com/66688.html
1.背景文章源自JAVA秀-https://www.javaxiu.com/66688.html
SpringBoot的应用监控方案比较多，SpringBoot+Prometheus+Grafana是目前比较常用的方案之一。它们三者之间的关系大概如下图：文章源自JAVA秀-https://www.javaxiu.com/66688.html
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关系图文章源自JAVA秀-https://www.javaxiu.com/66688.html
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2.开发SpringBoot应用文章源自JAVA秀-https://www.javaxiu.com/66688.html
首先，创建一个SpringBoot项目，pom文件如下：文章源自JAVA秀-https://www.javaxiu.com/66688.html
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId></dependency><dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional></dependency><dependency> <groupId>io.prometheus</groupId> <artifactId>simpleclient_spring_boot</artifactId> <version>0.8.1</version></dependency><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId></dependency>注意：这里的SpringBoot版本是1.5.7.RELEASE，之所以不用最新的2.X是因为最新的simpleclient_spring_boot只支持1.5.X，不确定2.X版本的能否支持。文章源自JAVA秀-https://www.javaxiu.com/66688.html
MonitorDemoApplication启动类增加注解文章源自JAVA秀-https://www.javaxiu.com/66688.html
@EnablePrometheusEndpoint @EnableSpringBootMetricsCollector @SpringBootApplication public class MonitorDemoApplication { public static void main(String[] args) { SpringApplication.run(MonitorDemoApplication.class, args); } }文章源自JAVA秀-https://www.javaxiu.com/66688.html
配置文件application.yml文章源自JAVA秀-https://www.javaxiu.com/66688.html
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server: port: 8848 spring: application: name: monitor-demo security: user: name: admin password: 1234 basic: enabled: true # 安全路径列表，逗号分隔，此处只针对/admin路径进行认证 path: /admin # actuator暴露接口的前缀 management: context-path: /admin # actuator暴露接口使用的端口，为了和api接口使用的端口进行分离 port: 8888 security: enabled: true roles: SUPERUSER测试代码TestController文章源自JAVA秀-https://www.javaxiu.com/66688.html
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@RequestMapping("/heap/test")@RestControllerpublic class TestController { public static final Map<String, Object> map = new ConcurrentHashMap<>(); @RequestMapping("") public String testHeapUsed() { for (int i = 0; i < 10000000; i++) { map.put(i + "", new Object()); } return "ok"; }}这里的逻辑就是在请求这个接口后，创建大量对象保存到map中增加堆内存使用量，方便后面测试邮件报警。文章源自JAVA秀-https://www.javaxiu.com/66688.html
启动项目后，可以在IDEA中看到有很多Endpoints，如图：文章源自JAVA秀-https://www.javaxiu.com/66688.html
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开始我的IDEA是不显示这个Endpoints，后来发现是我使用的idea版本太老了,还是2017.1的，文章源自JAVA秀-https://www.javaxiu.com/66688.html
而这个需要 idea2017.2版本以上才能看到。文章源自JAVA秀-https://www.javaxiu.com/66688.html
后来只好重新下载安装，弄了好久。文章源自JAVA秀-https://www.javaxiu.com/66688.html
启动完毕，访问http://localhost:8888/admin/prometheus就可以看到服务暴露的那些监控指标了。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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监控指标文章源自JAVA秀-https://www.javaxiu.com/66688.html
注意：文章源自JAVA秀-https://www.javaxiu.com/66688.html
由于开启了安全认证，所以访问这个URL的需要提示输入账号/密码，如果提示404请检查下你的请求地址是否正确，如果不设置management.context-path则默认地址是http://ip:port/prometheus文章源自JAVA秀-https://www.javaxiu.com/66688.html
3.安装Prometheus文章源自JAVA秀-https://www.javaxiu.com/66688.html
本文下载的是Windows版本prometheus-2.17.2.windows-amd64.tar.gz。文章源自JAVA秀-https://www.javaxiu.com/66688.html
下载地址：https://prometheus.io/download/文章源自JAVA秀-https://www.javaxiu.com/66688.html
解压后修改prometheus.yml文件，配置数据采集的目标信息。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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scrape_configs: # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config. # - job_name: 'prometheus' # metrics_path defaults to '/metrics' # scheme defaults to 'http'. # static_configs: # - targets: ['localhost:9090'] - job_name: 'monitor-demo' scrape_interval: 5s # 刮取的时间间隔 scrape_timeout: 5s metrics_path: /admin/prometheus scheme: http basic_auth: #认证信息 username: admin password: 1234 static_configs: - targets: - 127.0.0.1:8888 #此处填写 Spring Boot 应用的 IP + 端口号更多配置信息请查看官方文档。文章源自JAVA秀-https://www.javaxiu.com/66688.html
现在可以启动Prometheus了，命令行输入：文章源自JAVA秀-https://www.javaxiu.com/66688.html
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prometheus.exe --config.file=prometheus.yml访问http://localhost:9090/targets，查看Spring Boot采集状态是否正常。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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采集目标信息文章源自JAVA秀-https://www.javaxiu.com/66688.html
4.安装Grafana文章源自JAVA秀-https://www.javaxiu.com/66688.html
本文用到的是Windows版本grafana-6.3.3.windows-amd64.zip。文章源自JAVA秀-https://www.javaxiu.com/66688.html
下载地址：https://grafana.com/grafana/download文章源自JAVA秀-https://www.javaxiu.com/66688.html
解压后运行bin目录下的grafana-server.exe启动，游览器访问http://localhost:3000即可看到登录页面，默认账号密码是admin/admin。文章源自JAVA秀-https://www.javaxiu.com/66688.html
现在开始创建自己的可视化监控面板。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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1.设置数据源文章源自JAVA秀-https://www.javaxiu.com/66688.html
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2. 创建一个Dashboard文章源自JAVA秀-https://www.javaxiu.com/66688.html
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3. 填写采集的指标点文章源自JAVA秀-https://www.javaxiu.com/66688.html
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注意：这里的指标点不能随便填，必须是已有的可以在 Prometheus看到。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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4.选择图表样式文章源自JAVA秀-https://www.javaxiu.com/66688.html
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5.填写标题描述文章源自JAVA秀-https://www.javaxiu.com/66688.html
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最后点击右上角的保存，输入Dashboad的名称即可。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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Tips: 这里的图表布局是可以用鼠标拖动的文章源自JAVA秀-https://www.javaxiu.com/66688.html
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5.添加邮件报警文章源自JAVA秀-https://www.javaxiu.com/66688.html
在实际项目中当监控的某的个指标超过阈值（比如CPU使用率过高），希望监控系统自动通过短信、钉钉和邮件等方式报警及时通知运维人员，Grafana就支持该功能。文章源自JAVA秀-https://www.javaxiu.com/66688.html
第一步：点击[Alerting]——>[Notification channels]添加通知通道文章源自JAVA秀-https://www.javaxiu.com/66688.html
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这里的Type有很多选项，包括webhook、钉钉等，这里以邮件为例。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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第二步：邮箱配置文章源自JAVA秀-https://www.javaxiu.com/66688.html
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Grafana默认使用conf目录下defaults.ini作为配置文件运行，根据官方的建议我们不要更改defaults.ini而是在同级目录下新建一个配置文件custom.ini。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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以腾讯企业邮箱为例，配置如下：文章源自JAVA秀-https://www.javaxiu.com/66688.html
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################### SMTP / Emailing ###################[smtp]enabled = truehost = smtp.exmail.qq.com:465user = xxxx@ininin.com# If the password contains # or ; you have to wrap it with triple quotes. Ex """#password;"""password = XXXcert_file =key_file =skip_verify = truefrom_address = xxxx@ininin.comfrom_name = Grafanaehlo_identity = ininin.com然后需要重启Grafana，命令文章源自JAVA秀-https://www.javaxiu.com/66688.html
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grafana-server.exe -config=E:\file\grafana-6.3.3\conf\custom.ini第三步：为指标添加alert文章源自JAVA秀-https://www.javaxiu.com/66688.html
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功能说明：文章源自JAVA秀-https://www.javaxiu.com/66688.html
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Evaluate every文章源自JAVA秀-https://www.javaxiu.com/66688.html
表示检测评率，这里为了测试效果，改为1秒文章源自JAVA秀-https://www.javaxiu.com/66688.html
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For文章源自JAVA秀-https://www.javaxiu.com/66688.html
如果警报规则配置了For，并且查询违反了配置的阈值，那么它将首先从OK变为Pending。从OK到Pending Grafana不会发送任何通知。一旦警报规则的触发时间超过持续时间，它将更改为Alerting并发送警报通知。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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Conditions文章源自JAVA秀-https://www.javaxiu.com/66688.html
when 表示什么时间，of 表示条件，is above 表示触发值文章源自JAVA秀-https://www.javaxiu.com/66688.html
同时，设置了is above后会有一条红线。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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If no data or all values are null文章源自JAVA秀-https://www.javaxiu.com/66688.html
如果没有数据或所有值都为空，这里选择触发报警文章源自JAVA秀-https://www.javaxiu.com/66688.html
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If execution error or timeout文章源自JAVA秀-https://www.javaxiu.com/66688.html
如果执行错误或超时，这里选择触发报警文章源自JAVA秀-https://www.javaxiu.com/66688.html
注意：下一次触发，比如10秒后，它不会再次触发，防止报警风暴产生！文章源自JAVA秀-https://www.javaxiu.com/66688.html
第四步：测试文章源自JAVA秀-https://www.javaxiu.com/66688.html
请求http://localhost:8848/heap/test接口后，内存升高大于设置的阈值，然后就收到报警邮件。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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报警邮件文章源自JAVA秀-https://www.javaxiu.com/66688.html
这里图片没有显示出来，搞不懂为什么。文章源自JAVA秀-https://www.javaxiu.com/66688.html
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6.总结文章源自JAVA秀-https://www.javaxiu.com/66688.html
这套监控功能还是挺强大的，就是Prometheus的表达式有点多。文章源自JAVA秀-https://www.javaxiu.com/66688.html
文档：文章源自JAVA秀-https://www.javaxiu.com/66688.html
https://prometheus.io/docs/introduction/first_steps/文章源自JAVA秀-https://www.javaxiu.com/66688.html
https://grafana.com/docs/grafana/latest/文章源自JAVA秀-https://www.javaxiu.com/66688.html
https://github.com/2YSP/monitor-demo文章源自JAVA秀-https://www.javaxiu.com/66688.html
来源：https://www.cnblogs.com/2YSP/p/12827487.html文章源自JAVA秀-https://www.javaxiu.com/66688.html
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