==========hadoop模板机==========
2处理器4内核50g 最小化安装关闭Kdump
分区:
/boot 1g 文件系统ext4
swap 2g 设备类型标准分区
/ 47g 设备类型标准分区 文件系统ext4
sudo yum install -y epel-release
sudo yum install -y psmisc nc net-tools rsync vim lrzsz ntp libzstd openssl-static tree iotop git
#静态ip设置
vi /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO=static
IPADDR=192.168.80.111
PREFIX=24
NETMASK=255.255.255.255
GATEWAY=192.168.80.2
DNS1=192.168.80.2
DNS2=8.8.8.8
#网络
systemctl restart network
systemctl status network
ip addr
#修改主机名
vi /etc/hostname
#配置映射
vi /etc/hosts
192.168.80.111 node111
192.168.80.112 node112
192.168.80.113 node113
#防火墙
systemctl status firewalld
systemctl stop firewalld
#防火墙自启
systemctl is-enabled firewalld.service
enabled
systemctl disable firewalld.service
#关闭安全子系统
vi /etc/selinux/config
disabled
#用户
adduser miao
passwd miao
#设置root权限
chmod 640 /etc/sudoers
vi /etc/sudoers
100G-->miao ALL=(ALL) NOPASSWD:ALL
#文件夹创建并更改所有者
mkdir tools
chown miao tools
#解压jdk和hadoop安装包 配置环境变量
sudo vi /etc/profile.d/my_env.sh 或者vi /etc/profile
#java
export JAVA_HOME=/opt/softs/jdk1.8.0_212
export PATH=$PATH:$JAVA_HOME/bin
#hadoop
export HADOOP_HOME=/opt/softs/hadoop-3.1.3
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin
source /etc/profile
#检查
java -version
hadoop-version
