是什么
一旦我们重启应用,sentinel规则将消失,生产环境需要将配置规则进行持久化
怎么玩
将限流配置规则持久化进Nacos保存,只要刷新8401某个rest地址,sentinel控制台 的流控规则就能看到,只要Nacos里面的配置不删除,针对8401上sentinel上的流控规则持续有效
修改cloudalibaba-sentinel-service8401
pom增加依赖
代码语言:javascript复制<!--SpringCloud ailibaba sentinel-datasource-nacos -->
<dependency>
<groupId>com.alibaba.csp</groupId>
<artifactId>sentinel-datasource-nacos</artifactId>
</dependency>
yml文件
代码语言:javascript复制server:
port: 8401
spring:
application:
name: cloudalibaba-sentinel-service
cloud:
nacos:
discovery:
server-addr: localhost:8848 #Nacos服务注册中心地址
sentinel:
transport:
dashboard: localhost:8080 #配置Sentinel dashboard地址
port: 8719
datasource:
ds1:
nacos:
server-addr: localhost:8848
dataId: cloudalibaba-sentinel-service
groupId: DEFAULT_GROUP
data-type: json
rule-type: flow
management:
endpoints:
web:
exposure:
include: '*'
feign:
sentinel:
enabled: true # 激活Sentinel对Feign的支持
添加Nacos数据源配置 datasource: ds1: nacos: server-addr: localhost:8848 dataId: cloudalibaba-sentinel-service groupId: DEFAULT_GROUP data-type: json rule-type: flow
添加Nacos数据源配置 spring: cloud: sentinel: datasource: ds1: nacos: server-addr: localhost:8848 dataId: ${spring.application.name} groupId: DEFAULT_GROUP data-type: json rule-type: flow
添加Nacos业务规则配置
内容解析 [ { "resource": "/rateLimit/byUrl", "limitApp": "default", "grade": 1, "count": 1, "strategy": 0, "controlBehavior": 0, "clusterMode": false } ] resource:资源名称; limitApp:来源应用; grade:阈值类型,0表示线程数,1表示QPS; count:单机阈值; strategy:流控模式,0表示直接,1表示关联,2表示链路; controlBehavior:流控效果,0表示快速失败,1表示Warm Up,2表示排队等待; clusterMode:是否集群。
测试 启动8401后刷新sentinel发现业务规则有了 快速访问测试接口 http://localhost:8401/rateLimit/byUrl
停止8401再看sentinel
重新启动8401再看sentinel 多次调用 http://localhost:8401/rateLimit/byUrl 重新配置出现了,持久化验证通过