docker 安装sentinel

https://hub.docker.com/r/bladex/sentinel-dashboard/tags

找到对应版本1.8.0

docker pull bladex/sentinel-dashboard:1.8.0

docker run --name sentinel  -d -p 8858:8858 -d bladex/sentinel-dashboard:1.8.0

docker update --restart=always sentinel

访问路径
http://192.168.1.137:8858

yml配置 我们需要以此给每个服务添加sentinel配置  注意client-ip 是本地  但是我们dashboard 是安装在docker中

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.1.137:8848
    sentinel:
      transport:
        port: 8719
        dashboard: 192.168.1.137:8858
        client-ip: 192.168.1.6

  application:
    name: mall-seckill
    #同一全局 设置服务器响应给客户端的日期时间格式
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
  thymeleaf:
    cache: false  #关闭thymeleaf 缓存
  redis:
    host: 192.168.1.137
    port: 6379
  task:
    execution:
      pool:
        core-size: 5
        max-size: 20
  session:
    store-type: redis
    redis:
      namespace: spring:redis
rocketmq:
  name-server: 192.168.1.137:9876
  producer:
    group: seckill-order-producer
  consumer:
    group: seckill-order-consumer
server:
  port: 190
management:
  endpoints:
    web:
      exposure:
        include: '*'

配置sentinel 失败后返回数据

@Component
public class SentinelUrlBlockHandler implements BlockExceptionHandler {

    @Override
    public void handle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, BlockException e) throws Exception {
        R r=R.error(BizCodeEnum.Access_TOO_FAST.getCode(),BizCodeEnum.Access_TOO_FAST.getMsg());
        httpServletResponse.setContentType("application/json;charset=UTF-8");
        httpServletResponse.getWriter().write(JSON.toJSONString(r));
    }
}