but there is no HDFS_NAMENODE_USER defined. Aborting operation. 错误信息解决方案 错误信息 Starting namenodes on [cpucode100] ERROR: Attempting to operate on hdfs namenode as root ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation. Star...
问题场景 使用flutter doctor -v出现以后警告 [!] Xcode - develop for iOS and macOS (Xcode 12.4) ? CocoaPods installed but not working. You appear to have CocoaPods installed but it is not working. This can happen if the version of Ruby that CocoaPods was i...
Ubuntu 20.04下使用rvm安裝Ruby 前言安裝rvm安裝ruby安裝bundlerTroubleshootingruby 2.7 w/ Redmine環境中有多個使用者source /usr/share/rvm/scripts/rvmRVM is not a function, selecting rubies with 'rvm use ...' will not work.Gem::Ext::BuildError: ERROR:...
想使用css实现一个带圆角的渐变边框 代码及结果如图: 虽然设置了border-radius:10px但结果仍是直角,查阅文档后W3C给出的解释:A box's backgrounds, but not its border-image, are clipped to the appropriate curve (as determined by ‘backgrou...