注：不同的CentOS版本安装的openjdk版本可能有差别； 卸载以上三个文件（需要root权限，登录root权限卸载） rpm -e --nodeps java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86_64 rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.x86_64 rpm -e --nodeps tzdata-java-2013g-1.el6.noarch tar -zxvf jdk.文件名 psd 查看安装路径 vi /etc/profile 在里面配制 export JAVA_HOME=""---- jdk解压路径 保存文件 sourec /etc/profile exit 输入java -sersion,验证是否安装成功
Linux下hadoop安装
使用远程FTP软件:Filezilla 将下载好的hadoop传输到用户目录下
如同解压JDK一样，解压hadoop，
装完按hadoop官网走
http://hadoop.apache.org/docs/r2.5.2/hadoop-project-dist/hadoop-common/SingleCluster.html Unpack the downloaded Hadoop distribution. In the distribution, edit the file etc/hadoop/hadoop-env.sh to define some parameters as follows: 设置JDK环境变量 # set to the root of your Java installation export JAVA_HOME=/home/hh/opt/modules/jdk1.7.0_79 # Assuming your installation directory is /usr/local/hadoop export HADOOP_PREFIX=/usr/local/hadoop Try the following command: $ mkdir input $ cp etc/hadoop/*.xml input # bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.5.0-cdh5.3.6.jar grep input output 'dfs[a-z.]+'
注：hadoop-mapreduce-examples-2.5.0-cdh5.3.6.jar这个包名后缀可能不一样 $ cat output/*
