failed to req api:/nacos/v1/ns/instance after all servers([localhost:8848]) tried: failed to req api:localhost:8848/nacos/v1/ns/instance. code:500 msg: java.net.connectexception: connection refused: connect

根据提供的引用内容，出现"failed to req API:/nacos/v1/ns/instance after all servers([localhost:80]) tried: ErrCode:500"错误的原因可能是由于nginx配置的问题导致的。当部署nacos集群并尝试将本地服务注册到该nacos集群时，可能会出现该错误。 解决该问题的方法是检查nginx的配置是否正确。确保nginx配置文件中的代理端口与nacos集群的端口一致。在您的情况下，您配置的代理端口是80，因此需要确保nacos集群的端口也是80。 另外，还需要确保nginx已经启动并且配置文件已经生效。您可以使用以下命令启动nginx并重新加载配置文件： ```shell sudo systemctl start nginx sudo systemctl reload nginx ``` 如果问题仍然存在，您可以检查nacos集群的日志文件以获取更多详细的错误信息，以便进一步排查问题。

这个错误提示"failed to req API:/nacos/v1/ns/instance after all servers([10.12.5.135:8848]) tried: ErrCode:503, ErrMsg:server is DOWN now, please try again later!" 意味着在尝试连接到服务器[10.12.5.135:8848]的过程中发生了故障。具体错误代码是503，错误消息是服务器当前不可用，请稍后重试。这个错误通常是由于服务器宕机或无法连接导致的。解决方法是先删除nacos容器，然后使用以下命令启动nacos容器：docker run --name nacos-server -d -p 8848:8848 --privileged=true --restart=always -e MODE=standalone -e PREFER_HOST_MODE=hostname -e JVM_XMS=256m -e JVM_XMX=256m -e SPRING_DATASOURCE_PLATFORM=mysql -e MYSQL_SERVICE_HOST=127.0.0.1 -e MYSQL_SERVICE_PORT=3306 -e MYSQL_SERVICE_DB_NAME=nacos -e MYSQL_SERVICE_USER=root -e MYSQL_SERVICE_PASSWORD=123456 nacos/nacos-server。这将重新启动nacos服务器，并确保它正确运行。<span class="em">1</span><span class="em">2</span><span class="em">3</span> #### 引用[.reference_title] - *1* [nacos报错：failed to req API:/nacos/v1/ns/instance after all servers([192.168.43.148:8848])解决方案](https://blog.csdn.net/Maven_Chen/article/details/128468044)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"] - *2* *3* [failed to req API:/nacos/v1/ns/instance after all servers([192.168.43.148:8848]) tried: ErrCode:503,](https://blog.csdn.net/Leo0703668/article/details/126668877)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"] [ .reference_list ]