[root@db02 scala-2.11.5]# spark-shell Setting default log level to "WARN". To adjust logging level use sc.setLogLevel(newLevel). Welcome to       ____              __      / __/__  ___ _____/ /__     _\ \/ _ \/ _ `/ __/  '_/    /___/ .__/\_,_/_/…

一.安装依赖包 [root@db01 ~]# yum install -y lrzsz [文件上传/下载] [root@db01 ~]# yum -y install xfsprogs [安装磁盘格式化命令mkfs.xfs] 二.创建相关目录 [root@db01 ~]# mkdir -p /server/tools [root@db01 ~]# mkdir /application [应用程序存放目录] [root@db01 ~]# mkdir /data [数据文件存放目录] 三.创建一块新…

在R语言中使用openxlsx包,会报错 解决办法就是: 下载安装Set-Rtool,安装时注意勾选对话框 然后在R中运行以下代码: Sys.setenv("R_ZIPCMD" = "H:/Rtools/bin/zip.exe") #your Rtools path 具体情况看看你的R软件在哪个盘里面装着.…

[root@centos8 ~]yum install keepalived -y [root@centos8 ~]systemctl start keepalived.services [root@centos8 ~]systemctl status keepalived.service 在虚拟机系统上yum 安装Keepalivedy启动时报错,原因是配置文件中网卡的名称和虚拟中的名称不对照. vi /etc/keepalived/keepalived.conf 修改为实际网卡名称.再次执行…

无意间struts应用在有网络的情况下启动正常,在断网的情况下启动报错,报错代码如下图所示: SEVERE: Exception starting filter struts2 Class: java.net.AbstractPlainSocketImpl File: AbstractPlainSocketImpl.java Method: connect Line: 178 - java/net/AbstractPlainSocketImpl.java:178:-1 at com.opensy…

安装socket.io时,报错,提示需要安装Microsoft visual studio 2005 或 Net framework 2.0 sdk,没有找到vcbuild.exe,解决办法是安装 .NET Framework 2.0 Software Development Kit (SDK)   http://www.microsoft.com/en-us/download/details.aspx?id=15354 并将 C:\Program Files\Microsoft Visual…

SSH项目 在网络复杂的情况(具体规律未知)下,Tomcat启动时,报如下错误: [ERROR] 2014-08-12 14:52:58,484 [org.apache.struts2.dispatcher.Dispatcher :27] - Dispatcher initialization failedUnable to load configuration. - Class: java.net.AbstractPlainSocketImplFile: AbstractPlainSocket…

控制台报错: Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.j…

1.在setting.py设置连接数据库 DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': 'djangotest', 'USER':'root', 'PASSWORD':'root', 'HOST':'127.0.0.1', 'PORT':'3306' }} 在使用migrate生成数据表的时候会提示没有连接Mysqldb的驱动,这时需要安装驱动 pip install mysql-python,在…

转自:http://blog.sina.com.cn/s/blog_4e1e357d0102v55c.html 控制台报错: Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131) at org.apache.cat…