1、如何显示uuid
2、如何生成uuid
192.168.153.128[root@centos71908network-scripts 09:29]#grep -i uuid= /etc/sysconfig/network-scripts/ifcfg-ens33
UUID="d6f45ee1-e4f9-40d3-8d7f-b8f2edb5161d"
#UUID="d6f45ee9-e4f9-40d3-8d7f-b8f2edb5161d"
192.168.153.128[root@centos71908network-scripts 09:26]#uuidgen ens33
ef964e5a-efb1-4d15-864d-639a1def7e6d
vim /etc/sysconfig/network-scripts/ifcfg-ens33
192.168.153.128[root@centos71908network-scripts 09:34]#grep -i uuid= /etc/sysconfig/network-scripts/ifcfg-ens33
UUID="ef964e5a-efb1-4d15-864d-639a1def7e6d"
#UUID="d6f45ee9-e4f9-40d3-8d7f-b8f2edb5161d"
192.168.153.128[root@centos71908network-scripts 09:34]#nmcli c show
NAME UUID TYPE DEVICE
ens33 d6f45ee1-e4f9-40d3-8d7f-b8f2edb5161d ethernet ens33
192.168.153.128[root@centos71908network-scripts 09:35]#service network restart
Restarting network (via systemctl): [ OK ]
192.168.153.128[root@centos71908network-scripts 09:35]#nmcli c show
NAME UUID TYPE DEVICE
ens33 ef964e5a-efb1-4d15-864d-639a1def7e6d ethernet ens33
3、uuid有什么用
centos中的uuid是必须的;uuid是“Universally Unique Identifier”通用唯一标识码的缩写,是一种软件建构的标准,是系统层面的全局唯一标识符号,其作用是让分布式系统中的所有元素,都能有唯一的辨识资讯,而不需要透过中央控制端来做辨识资讯的指定。