hadoop

ifconfig
vim /etc/sysconfig/network-sripts/ifcfg-enp0s3
vim /etc/sysconfig/network
hostnamectl set-hostname master #设置主机名
service network restart
##如果不能ping通主机，检查防火墙是否关闭
#ftp 传输jdk 跟 Hadoop
cd /usr/local
rpm -ivh jdk-x86-...
tar -xvf hadoop-...
mv  hadoop-2.7.3  hadoop
cd hadoop/etc/hadoop
vim hadoop-env.sh 
-->JAVA_HOME=/usr/java/local  :wq
vim /etc/profile #设置hadoop到环境变量中
-->exprot PATH=$PATH:/usr/local/hadoop/bin:/usr/local/hadoop/sbin
source /etc/profile #让命令生效
hadoop
shutdown -h now 
########################
#复制三台服务slave1，slave2
hostnamectl set-hostname slave1
vim /etc/sysconfig/network-sripts/ifcfg-enp0s3
-->IPADDR=192.168.56.101
service network restart
##xshell-->工具-->选项卡方案

systemctl restart network #重启网络服务
systemctl stop firedwalld
systemctl disable firewalld

hadoop

cd /usr/local/hadoop/etc/hadoop
ls
vim core-site.xml
--><property>
    <name></name>
    <value></value>
</property>
vim /etc/hosts
--->192.168.56.100 master
    192.168.56.101 slave1
    192.168.56.102 slave2
    192.168.56.103 slave3
hdfs namenode -format #格式化名称节点
master:
hadoop-deamon.sh start namenode
jps
slave123:
hadoop-deamon.sh start datanode
jps