[root@rmaster01 ~]# echo -e “192.168.31.130 kubernetes”|sudo tee -a /etc/hosts
    192.168.31.130 kubernetes
    [root@rmaster01 ~]# cat /etc/hosts
    127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
    ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
    192.168.31.130 rmaster01
    192.168.31.131 rmaster02
    192.168.31.132 rmaster03
    192.168.31.133 node01
    192.168.31.134 node02
    192.168.31.133 node01 riyimei.cn
    192.168.31.130 kubernetes
    [root@rmaster01 ~]#