Sentinel使用Nacos存储规则

动态配置

推荐使用psuh模式，结合nacos使用

组件版本推荐

这里使用：
springboot 2.3.2.RELEASE
springcloud Hoxton.SR8
spring alibaba cluod 2.2.5.RELEASE
sentinel-datasource-nacos 1.8.0
sentinel 1.8.5

sentinel整合nacos

注解配置、控制台配置都无法解决配置丢失问题，通过Nacos配置中心解决该问题
下载源码：https://github.com/alibaba/Sentinel/archive/refs/tags/1.8.5.zip

1. 修改pom.xml
   
   将test这块注释掉

2. 将test路径下的nacos文件夹拷贝到rule下
   

3. 在配置文件中增加nacos配置
   

4. 修改NacosConfig的配置
   

5. NacosConfigUtil注意groupid和后缀
   

6. 修改规则方法的引用，新增nacos的方法
   

    @Autowired
    @Qualifier("flowRuleNacosProvider")
    private DynamicRuleProvider<List<FlowRuleEntity>> ruleProvider;
    @Autowired
    @Qualifier("flowRuleNacosPublisher")
    private DynamicRulePublisher<List<FlowRuleEntity>> rulePublisher;

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7. 修改sidebar.html文件

<li ui-sref-active="active" ng-if="entry.appType==0">
	<a ui-sref="dashboard.flowV1({app: entry.app})">
	<i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控规则 V1</a>
</li>

<li ui-sref-active="active" ng-if="!entry.isGateway">
	<a ui-sref="dashboard.flow({app: entry.app})">
	<i class="glyphicon glyphicon-filter"></i>&nbsp;&nbsp;流控规则 Nacos</a>
</li>

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• 修改 FlowServiceV1 为FlowServiceV2
  

• 修改flow_v2.html
  

• 打包
  

客户端集成

• pom.xml

	<!--sentinel持久化 -->
	<dependency>
		<groupId>com.alibaba.csp</groupId>
		<artifactId>sentinel-datasource-nacos</artifactId>
	</dependency>

	<!-- nacos服务注册与发现 -->
	<dependency>
		<groupId>com.alibaba.cloud</groupId>
		<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
	</dependency>

	<!-- nacos配置 -->
	<dependency>
		<groupId>com.alibaba.cloud</groupId>
		<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
	</dependency>

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• 配置

server:
  port: 8806

spring:
  application:
    name: sentinel-user-nacos-push  #微服务名称
  #配置nacos注册中心地址
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848

    sentinel:
      transport:
        # 添加sentinel的控制台地址
        dashboard: 127.0.0.1:8080
        # 指定应用与Sentinel控制台交互的端口，应用本地会起一个该端口占用的HttpServer
        #port: 8719
        clientIp: localhost
      datasource:
#        ds1:   #名称自定义，唯一
#          nacos:
#            server-addr: 127.0.0.1:8848
#            dataId: ${spring.application.name}-flow-rules
#            groupId: SENTINEL_GROUP
#            data-type: json
#            rule-type: flow
        flow-rules:
          nacos:
            namespace: dddddd
            server-addr: 127.0.0.1:8848
            dataId: ${spring.application.name}-flow-rules
            groupId: SENTINEL_GROUP# 注意groupId对应Sentinel Dashboard中的定义
            data-type: json
            rule-type: flow
        degrade-rules:
          nacos:
            server-addr: 127.0.0.1:8848
            dataId: ${spring.application.name}-degrade-rules
            groupId: SENTINEL_GROUP
            data-type: json
            rule-type: degrade
        param-flow-rules:
          nacos:
            server-addr: 127.0.0.1:8848
            dataId: ${spring.application.name}-param-flow-rules
            groupId: SENTINEL_GROUP
            data-type: json
            rule-type: param-flow
        authority-rules:
          nacos:
            server-addr: 127.0.0.1:8848
            dataId: ${spring.application.name}-authority-rules
            groupId: SENTINEL_GROUP
            data-type: json
            rule-type: authority
        system-rules:
          nacos:
            server-addr: 127.0.0.1:8848
            dataId: ${spring.application.name}-system-rules
            groupId: SENTINEL_GROUP
            data-type: json
            rule-type: system

  main:
    allow-bean-definition-overriding: true

#暴露actuator端点   http://localhost:8800/actuator/sentinel
management:
  endpoints:
    web:
      exposure:
        include: '*'

#feign:
#  sentinel:
#    enabled: true   #开启sentinel对feign的支持 默认false



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• 在配置中心创建流控规则文件：sentinel-user-nacos-push-flow-rules

[
    {
        "clusterConfig":{
            "acquireRefuseStrategy":0,
            "clientOfflineTime":2000,
            "fallbackToLocalWhenFail":true,
            "resourceTimeout":2000,
            "resourceTimeoutStrategy":0,
            "sampleCount":10,
            "strategy":0,
            "thresholdType":0,
            "windowIntervalMs":1000
        },
        "clusterMode":false,
        "controlBehavior":0,
        "count":1,
        "grade":1,
        "limitApp":"default",
        "maxQueueingTimeMs":500,
        "resource":"/test1",
        "strategy":0,
        "warmUpPeriodSec":10
    }
]


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注意：“limitApp”:“default”，这个参数默认为default

• 验证nacos里面是不是有
  
• sentinel 控制台是不是也有该规则

由于懒加载的方式，需要先访问服务才能显示

资源包：sentinel-dashboard-1.8.5.jar