最新日志查看 ls -lrt
监控系统命令 top vmstat * ( *输入数字 前边是多少秒一次 后边是次数)
Oracle创建用户等一系列 create user lizhao identified by sunning; grant resource to lizhao; grant connect to lizhao; grant dba to lizhao; conn lizhao/sunning;
Kdump 是个log文件 yum源 cd /media/CentOS_6.6_Final/Packages/ mkdir /yum cp * /yum cd /yum
安装依赖环境 rpm -ivh deltarpm-3.5-0.5.20090913git.el6.x86_64.rpm rpm -ivh python-deltarpm-3.5-0.5.20090913git.el6.x86_64.rpm rpm -ivh createrepo-0.9.9-22.el6.noarch.rpm
hadoop的模式 单机模式 伪分布式集群 (实验节点往往是这种) 完全分布式集群(生产环境)