开个帖子，汇总一下读者经常提到的一些问题

问题一：ubuntu下启动Nacos报错

问题描述

使用命令sh startup.sh -m standalone启动报错：

./startup.sh: 78: ./startup.sh: [[: not found ./startup.sh: 88: ./startup.sh: [[: not found ./startup.sh: 90: ./startup.sh: [[: not found ./startup.sh: 96: ./startup.sh: [[: not found /usr/lib/jvm/java-8-oPEnjdk-amd64/bin/java  -server -XMs2g -Xmx2g -Xmn1g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m -XX:-OmITStackTraceinFastThrow -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/data/soft/nacos/LOGs/java_heapdump.hPRof -XX:-UseLargePages -Djava.ext.dirs=/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext:/usr/lib/jvm/java-8-openjdk-amd64/lib/ext:/data/soft/nacos/plugins/cmdb:/data/soft/nacos/plugins/MySQL -Xloggc:/data/soft/nacos/logs/nacos_gc.log -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDatestamps -XX:+PrintGCTimeStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=100M -Dnacos.home=/data/soft/nacos -jar /data/soft/nacos/target/nacos-server.jar  --spring.config.location=classpath:/,classpath:/config/,file:./,file:./config/,file:/data/soft/nacos/conf/ --logging.config=/data/soft/nacos/conf/nacos-logback.xML ./startup.sh: 116: ./startup.sh: [[: not found nacos is starting，you can check the /data/nacos/logs/start.out

解决方法

改用命令bash -f ./startup.sh -m standalone启动

问题二：Failed to create database '/data/soft/nacos/data/derby-data'

问题描述

使用命令sh startup.sh -m standalone启动的时候，出现如下报错：

Caused by: java.lang.RuntimeException: load schema.SQL error.org.apache.COMmons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Failed to create database '/data/nacos/data/derby-data', see the next exception for details.)     at com.alibaba.nacos.config.server.service.LocalDataSourceServiceImpl.reload(LocalDataSourceServiceImpl.java:110)     at com.alibaba.nacos.config.server.service.LocalDataSourceServiceImpl.init(LocalDataSourceServiceImpl.java:94)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:498)     at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:363)     at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:307)     at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:136)     ... 70 common frames omitted

解决方法

删除报错信息中的'/data/nacos/data/derby-data'目录，重新启动。

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