在搭建工作集群前我们应该做些什么

1.配置静态ip

关于配置静态IP

2.配置hosts解析

hostname ydbmaster

vi /etc/sysconfig/network

vi /etc/hosts

3.关闭防火墙

iptables -P INPUT ACCEPT

iptables -P FORWARD ACCEPT

iptables -P OUTPUT ACCEPT

iptables -F

chkconfig iptables off

/etc/init.d/iptables stop

4.关闭swap分区

swapoff -a

5.ssh无密码登陆

ssh-keygen

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

chmod 700 ~/.ssh

chmod 600 ~/.ssh/authorized_keys