錯(cuò)誤日志顯示的是nacos的服務(wù)數(shù)量已達(dá)最大，實(shí)際原因是配置中心出問題了。

若僅使用了nacos的發(fā)現(xiàn)功能（discovery），則不需要引入配置依賴“spring-cloud-starter-alibaba-nacos-config”，否則將會(huì)報(bào)錯(cuò)，如下：

[2022-10-17 15:01:42] [INFO ] -- LOCAL_SNAPSHOT_PATH:/root/nacos/config
[2022-10-17 15:01:42] [INFO ] -- limitTime:5.0
[2022-10-17 15:01:42] [ERROR] -- [NACOS ConnectException httpGet] currentServerAddr:http://localhost:8848, err : Connection refused (Connection refused)
[2022-10-17 15:01:42] [ERROR] -- [NACOS ConnectException httpGet] currentServerAddr:http://localhost:8848, err : Connection refused (Connection refused)
[2022-10-17 15:01:42] [ERROR] -- [NACOS ConnectException httpGet] currentServerAddr:http://localhost:8848, err : Connection refused (Connection refused)
[2022-10-17 15:01:42] [ERROR] -- [NACOS ConnectException httpGet] currentServerAddr:http://localhost:8848, err : Connection refused (Connection refused)
[2022-10-17 15:01:42] [ERROR] -- [fixed-localhost_8848] [sub-server] get server config exception, dataId=modelwenzhou, group=DEFAULT_GROUP, tenant=
java.net.ConnectException: [NACOS HTTP-GET] The maximum number of tolerable server reconnection errors has been reached
        at com.alibaba.nacos.client.config.http.ServerHttpAgent.httpGet(ServerHttpAgent.java:125)
        at com.alibaba.nacos.client.config.http.MetricsHttpAgent.httpGet(MetricsHttpAgent.java:51)
        at com.alibaba.nacos.client.config.impl.ClientWorker.getServerConfig(ClientWorker.java:274)
        at com.alibaba.nacos.client.config.NacosConfigService.getConfigInner(NacosConfigService.java:155)
        at com.alibaba.nacos.client.config.NacosConfigService.getConfig(NacosConfigService.java:98)
        at com.alibaba.cloud.nacos.client.NacosPropertySourceBuilder.loadNacosData(NacosPropertySourceBuilder.java:85)
        at com.alibaba.cloud.nacos.client.NacosPropertySourceBuilder.build(NacosPropertySourceBuilder.java:73)
        at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosPropertySource(NacosPropertySourceLocator.java:199)
        at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosDataIfPresent(NacosPropertySourceLocator.java:186)
        at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadApplicationConfiguration(NacosPropertySourceLocator.java:141)
        at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.locate(NacosPropertySourceLocator.java:103)
        at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:51)
        at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:47)
        at org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration.initialize(PropertySourceBootstrapConfiguration.java:95)
        at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:639)
        at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:402)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:338)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1329)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1318)
        at com.caipos.WenzhouModelApp.main(WenzhouModelApp.java:34)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
[2022-10-17 15:01:42] [WARN ] -- [fixed-localhost_8848] [get-config] get from server error, dataId=modelwenzhou, group=DEFAULT_GROUP, tenant=, msg=ErrCode:500, ErrMsg:[NACOS HTTP-GET] The maximum number of tolerable server reconnection errors has been reached

解決辦法1：

移除config依賴：

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

解決辦法2：

bootstrap.yml中將config關(guān)閉：文章來源地址http://www.zghlxwxcb.cn/news/detail-532448.html

spring:
  application:
    name: modelServer
  cloud:
    nacos:
      discovery:
        server-addr: http://nacos:8848
      config:
        enabled: false

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