配置虚拟机网络

创建虚拟机

20G 4G内存 初始化用户名和密码 zhao 123456

克隆拷贝2个虚拟机

配置内存为2G

修改主机名和固定IP

hostnamectl set-hostname node1
hostnamectl set-hostname node2
vim /etc/sysconfig/network-scripts/ifcfg-ens33
systemctl stop network
systemctl start network
systemctl restart network
![在这里插

IPADDR=“192.168.131”
IPADDR=“192.168.88.132”
NETMASK=“255.255.255.0”
GATEWAY=“182.168.88.2”
DNS1=“192.168.88.2”

systemctl stop network
systemctl start network

ssh免密登录

ssh-keygen -t rsa -b 4096
root@node1:  cd .ssh/
root@node1:  ll
root@node1:  cd       默认跳转到root根用户
ssh-copy-id node1    回车
ssh-copy-id node2    回车
ssh-copy-id node3    回车

三台机器都有执行上述命令

测试： ssh node3
root@node3:

hadoop免密互通

useradd hadoop
passwd 123456
su - hadoop
123456
ssh-keygen -t rsa -b 4096
ssh-copy-id node1    回车
ssh-copy-id node2    回车
ssh-copy-id node3    回车