1.使用root配置的hadoop并启动会出现报错 错误: Starting namenodes on [master] ERROR: Attempting to operate on hdfs namenode as root ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation. Starting datanodes
一.报错信息: Starting namenodes on [master] ERROR: Attempting to operate on hdfs namenode as root ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation. Starting datanodes ERROR: Attempting to
今天新安装了soapui准备测试一下接口,结果安装成功后启动时报错:The JVM could not be started. The maximum heap size (-Xmx) might be too large 意思就是:Java虚拟机无法启动.Xmx可能太大 这时就需要将这个参数的值改小一点. 经过排查这个参数在soapui安装目录\bin\目录下的vmoptions配置文件中 将原来的值改为800,保存后启动成功
mysql启动报错Starting MySQL... ERROR! The server quit without updating PID file (/opt/mysql/data/mysql.pid) 查看mysql错误日志也没有写入. 最后发现是selinux打开,汗…… 参考 mysql启动时报错:Starting MySQL... ERROR! The server quit without updating PID file (/opt/mysql/data/mysql.pid)
Eclipse启动时报错Java was started but returned exit code=13 如图所示 原因是通过第三方更新JRE时,第三方安装的是32位的JRE,与64位的eclipse不匹配(报错信息的--launcher.library中有x86_64说明这个eclipse是64位的) JDK8/JRE8在安装完成之后,会添加一个环境变量C:\ProgramData\Oracle\Java\javapath 这个环境变量是三个快捷方式,分别是java.exe.lnk jav
jenkins启动时报错: consider increasing the maximum size of the cache. After eviction approximately [10,239] KB of data 缓存不足 解决办法: D:\tomcat\apache-tomcat-8.5.32\conf\context.xml 中加上一行 <Resources cachingAllowed="true" cacheMaxSize="100000&q
Selenium+PhantomJS使用时报错原因及解决方案 问题 今天在使用selenium+PhantomJS动态抓取网页时,出现如下报错信息: UserWarning: Selenium support for PhantomJS has been deprecated, please use headless versions of Chrome or Firefox instead warnings.warn('Selenium support for PhantomJS ha
hadoop启动journalnode时报错:localhost: ssh: Could not resolve hostname localhost: Temporary failure in name resolution 解决办法:将高亮部分补充到/etc/profile中,然后source生效 export JAVA_HOME=/opt/module/jdk1.8.0_144 export HADOOP_HOME=/opt/ha/hadoop-2.7.4 export HADOOP_CO
netperf启动netserver时报错 "Unable to start netserver with 'IN(6)ADDR_ANY' port '12865' and family AF_UNSPEC'" netserver启动报错: 如果netserver启动时端口被占用,则会报以下错误: Unable to start netserver with 'IN(6)ADDR_ANY' port '12865' and family AF_UNSPEC 解决方法—亲测可用: 指定一
运行tomcat/bin目录下的startup.bat时报错:the CATALINA_HOME environment variable is not defined correctly 碰到这个问题时的第一反应是添加CATALINA_HOME环境变量: 添加环境变量后发现问题不能解决,还是报同样的错误,打开startup.bat脚本,找到出错的位置 阅读代码后可以发现: 1. 未设置CATALINA_HOME变量时,系统会将cd所在的路径设置为CATALINA_HOME,所以引发了第