hadoop安装

1. centos7 ip设置

修改vi /etc/sysconfig/network-scripts/ifcfg-eth33
BOOTPROTO="static" #dhcp改为static  
ONBOOT="yes" #开机启用本配置  
IPADDR=192.168.153.146 #静态IP  
GATEWAY=192.168.153.1 #默认网关  
NETMASK=255.255.255.0 #子网掩码  
DNS1=192.168.153.1 #DNS 配置
重启网络服务
service network restart
查看IP：ip addr

2. 关闭防火墙

//临时关闭 systemctl stop firewalld
//禁止开机启动 systemctl disable firewalld

3. 安装jdk

在opt目录下面   解压tar -zxvf jdk-7u80-linux-x64.tar.gz
mv jdk-7u80-linux-x64 jdk
添加环境变量vi /etc/profile
export JAVA_HOME="/opt/jdk"
export PATH=$JAVA_HOME/bin:$PATH
使用命令source /etc/profile 使环境变量生效
查看java -version是否安装成功

4. 安装hadoop

在opt目录下面 解压tar -zxvf hadoop-2.8.0.tar.gz
mv hadoop-2.8.0 hadoop
查看是否安装成功
[root@localhost bin]# ./hadoop version
Hadoop 2.8.0
Subversion https://git-wip-us.apache.org/repos/asf/hadoop.git -r 91f2b7a13d1e97be65db92ddabc627cc29ac0009
Compiled by jdu on 2017-03-17T04:12Z
Compiled with protoc 2.5.0
From source with checksum 60125541c2b3e266cbf3becc5bda666
This command was run using /opt/hadoop/share/hadoop/common/hadoop-common-2.8.0.jar