nacos基础(1):下载安装启动和排错

2024-02-11 21:20:34

nacos官网:https://nacos.io/

下载

nacos下载:https://github.com/alibaba/nacos/releases

安装

解压安装包即可

启动

双击bin下的startup.cmd，如果启动成功不报错，即可访问:http://localhost:8848/nacos/
nacos默认登录账号:nacos,密码:nacos

启动发生错误

错误1: Unable to start web server

2022-03-01 09:57:58,639 ERROR Startup errors : {}

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:156)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)

解决办法：

在bin目录下编写一个bat脚本,内容如下,然后双击启动即可

startup.cmd -m standalone

错误2:db.num is null

java.io.IOException: java.lang.IllegalArgumentException: db.num is null
        at com.alibaba.nacos.config.server.service.datasource.ExternalDataSourceServiceImpl.reload(ExternalDataSourceServiceImpl.java:134)
        at com.alibaba.nacos.config.server.service.datasource.ExternalDataSourceServiceImpl.init(ExternalDataSourceServiceImpl.java:106)
        at com.alibaba.nacos.config.server.service.datasource.DynamicDataSource.getDataSource(DynamicDataSource.java:53)
        at com.alibaba.nacos.config.server.service.repository.extrnal.ExternalStoragePersistServiceImpl.init(ExternalStoragePersistServiceImpl.java:138)