nacos启动异常

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我是靠谱客的博主愉快羊，最近开发中收集的这篇文章主要介绍nacos启动异常，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

搭建个新服务，nacos做配置中心，运维帮忙部署时出了几个异常，记录下。

第一个异常：

[ERROR] c.a.n.c.c.impl.ClientWorker.getServerConfig:304 - [fixed-nacos2-xxx.xxx.com_80-tv-dev] [sub-server-error] no right, dataId=tm-xxx-server, group=TM_xxx_GROUP, tenant=tv-dev
[ERROR] c.a.c.n.c.NacosPropertySourceBuilder.loadNacosData:101 - get data from Nacos error,dataId:tm-xxx-server 
com.alibaba.nacos.api.exception.NacosException: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Thu Jan 13 15:07:22 CST 2022</div><div>There was an unexpected error (type=Forbidden, status=403).</div><div>authorization failed!</div></body></html>
	at com.alibaba.nacos.client.config.impl.ClientWorker.getServerConfig(ClientWorker.java:306)
	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)

主要是抛出了一个【authorization failed】，检查配置信息。

PS:最开始的两行打印处了[ERROR]

fixed-nacos2-xxx.xxx.com_80-tv-dev
nacos的连接地址

dataId=tm-xxx-server
配置的yml名称
group=TM_xxx_GROUP
组名称
tenant=tv-dev
命名空间namespace

定位发现运维把namespace配错了，导致异常出现。

第二个异常：

ERROR [tm-simba-server,,,] 10 --- [           main] c.a.n.client.config.impl.ClientWorker    : [fixed-nacos2-offline.ikunchi.com_80-mqk-dev] [sub-server-error] no right, dataId=tm-simba-server, group=TM_SIMBA_GROUP, tenant=mqk-dev
[main] ERROR c.a.n.c.c.i.ClientWorker - [getServerConfig,304] - [fixed-nacos2-offline.ikunchi.com_80-mqk-dev] [sub-server-error] no right, dataId=tm-simba-server, group=TM_SIMBA_GROUP, tenant=mqk-dev
 WARN [tm-simba-server,,,] 10 --- [           main] io.sentry.dsn.Dsn                        : *** Couldn't find a suitable DSN, Sentry operations will do nothing! See documentation: https://docs.sentry.io/clients/java/ ***
[main] WARN  io.sentry.dsn.Dsn - [dsnLookup,89] - *** Couldn't find a suitable DSN, Sentry operations will do nothing! See documentation: https://docs.sentry.io/clients/java/ ***
 WARN [tm-simba-server,,,] 10 --- [           main] io.sentry.DefaultSentryClientFactory     : No 'stacktrace.app.packages' was configured, this option is highly recommended as it affects stacktrace grouping and display on Sentry. See documentation: https://docs.sentry.io/clients/java/config/#in-application-stack-frames
[main] WARN  i.s.DefaultSentryClientFactory - [getInAppFrames,524] - No 'stacktrace.app.packages' was configured, this option is highly recommended as it affects stacktrace grouping and display on Sentry. See documentation: https://docs.sentry.io/clients/java/config/#in-application-stack-frames
ERROR [tm-simba-server,,,] 10 --- [           main] c.a.c.n.c.NacosPropertySourceBuilder     : get data from Nacos error,dataId:tm-simba-server 
com.alibaba.nacos.api.exception.NacosException: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Tue Jan 11 11:28:39 CST 2022</div><div>There was an unexpected error (type=Forbidden, status=403).</div><div>authorization failed!</div></body></html>
	at com.alibaba.nacos.client.config.impl.ClientWorker.getServerConfig(ClientWorker.java:306)
	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)

又抛出了【authorization failed!】，此时namespace已经匹配上了，为啥又报错？很是尴尬，经过复盘提出猜想。最初namespace是“AAA”，项目正常运行后经理过来要求把namespace改成“XXX”。运维更改后项目启动失败，猜测是更改namespace时用户权限分配的有问题。经过一系列修改后启动仍然失败，后来为了彻底验证是不是账号授权问题运维删除了账号和namespace，重新配置了一遍，项目启动成功。

总结：不要随便更改namespace和账号权限，运维在部署服务时自己也要检查一遍运维的配置。上述问题并不是很高深的问题，但是部署环境时稍不注意就会发生。

第三个异常(本地异常)：

[main] {"SERVICE":"applicationName_IS_UNDEFINED","X-B3-SpanId":"","X-B3-TraceId":"","X-B3-ParentSpanId":""} [ERROR] c.a.n.c.c.http.ServerHttpAgent.httpGet:112 - [NACOS SocketTimeoutException httpGet] currentServerAddr:http://localhost:8848， err : connect timed out
[main] {"SERVICE":"applicationName_IS_UNDEFINED","X-B3-SpanId":"","X-B3-TraceId":"","X-B3-ParentSpanId":""} [ERROR] c.a.n.c.c.http.ServerHttpAgent.httpGet:112 - [NACOS SocketTimeoutException httpGet] currentServerAddr:http://localhost:8848， err : connect timed out
[main] {"SERVICE":"applicationName_IS_UNDEFINED","X-B3-SpanId":"","X-B3-TraceId":"","X-B3-ParentSpanId":""} [ERROR] c.a.n.c.c.http.ServerHttpAgent.httpGet:112 - [NACOS SocketTimeoutException httpGet] currentServerAddr:http://localhost:8848， err : connect timed out
[main] {"SERVICE":"applicationName_IS_UNDEFINED","X-B3-SpanId":"","X-B3-TraceId":"","X-B3-ParentSpanId":""} [ERROR] c.a.n.c.c.http.ServerHttpAgent.httpGet:133 - no available server
[main] {"SERVICE":"applicationName_IS_UNDEFINED","X-B3-SpanId":"","X-B3-TraceId":"","X-B3-ParentSpanId":""} [ERROR] c.a.n.c.c.impl.ClientWorker.getServerConfig:279 - [fixed-localhost_8848] [sub-server] get server config exception, dataId=null.properties, group=DEFAULT_GROUP, tenant=
java.net.ConnectException: no available server
	at com.alibaba.nacos.client.config.http.ServerHttpAgent.httpGet(ServerHttpAgent.java:134)
	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)

显示【connect timed out】，并且dataId、group、tenant都不正常。仔细检查了yml没啥问题，就是项目起不来，无语中。

后来发现是服务启动时nacos对读取yml文件的时机有要求，nacos作为配置中心要连接nacosServer获取服务的配置文件，所以服务启动时nacos的信息要配置在bootstrap.yml中被项目最先加载。

平时写了N行的代码，但也不是天天配置项目，初学nacos的时候也看到过这个点，但上一次看到的时候还是上一次，确实忘记了，挺尬的。