1.Nacos下载后启动失败
下载完Nacos解压后启动会报出如下错误：
java.io.IOException: java.lang.IllegalArgumentException: db.num is null
.......
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
........
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'authFilterRegistration' defined in class path resource [com/alibaba/nacos/core/auth/AuthConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servlet.FilterRegistrationBean]: Factory method 'authFilterRegistration' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'authFilter': Unsatisfied dependency expressed through field 'authManager'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'nacosAuthManager': Unsatisfied dependency expressed through field 'authenticationManager'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'nacosAuthConfig': Unsatisfied dependency expressed through field 'userDetailsService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'nacosUserDetailsServiceImpl': Unsatisfied dependency expressed through field 'userPersistService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'externalUserPersistServiceImpl': Unsatisfied dependency expressed through field 'persistService'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'externalStoragePersistServiceImpl': Invocation of init method failed; nested exception is java.lang.RuntimeException: java.lang.RuntimeException: [db-load-error]load jdbc.properties error
由于在1.3.2之后默认使用的【集群方式】启动我们要手动改回单机模式，如果你非要用高版本，需要修改启动命令，改为【单机模式】右键点击startup.cmd选择编辑
在这里插入图片描述
找到
set MODE=“cluster”
修改为
rem set MODE=“cluster”
set MODE=“standalone”
修改结果
rem是注释的意思，保存退出后重启。
运行成功
