版权声明:@抛物线 https://blog.csdn.net/qq_28513801/article/details/90138735
事实上大家可能有时候不小心将/etc/sysconfig/network-scripts/ifcfg-eth0(可以通过此文件进行查看UUID)删除或者损坏,
要重新编辑ifcfg-eth0文件时不知道网卡的UUID是什么(当然也可以不写),那我们还有什么方法可以查看网卡的UUID呢?在这里我们使用的方法是使用nmcli命令查看,方法如下:
①:
首先我们查看一下nmcli是哪个软件包提供的:
[root@controller ~]# yum provides "*/nmcli"
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Loading mirror speeds from cached hostfile
centos/filelists_db | 2.9 MB 00:00:00
iaas/filelists_db | 1.9 MB 00:00:00
1:NetworkManager-1.0.6-27.el7.x86_64 : Network connection manager and user applications
Repo : centos
Matched from:
Filename : /usr/share/bash-completion/completions/nmcli
Filename : /usr/bin/nmcli
1:NetworkManager-1.0.6-31.el7_2.x86_64 : Network connection manager and user applications
Repo : iaas
Matched from:
Filename : /usr/share/bash-completion/completions/nmcli
Filename : /usr/bin/nmcli
[root@controller ~]#
②从上面结果可以看出nmcli,接下来我们安装NetworkManager这个软件包。
[root@controller ~]# yum install -y NetworkManager
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
centos | 3.6 kB 00:00:00
iaas | 2.9 kB 00:00:00
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running tra
③:启动NetworkManager服务
[root@controller ~]# systemctl restart NetworkManager
④:查看网卡UUID
nmcli con show这里也可以不使用show 在7.x以下的版本中使用的是list 而不是show
[root@controller ~]# nmcli con | sed -n '1,2p'
NAME UUID TYPE SCOPE TIMESTAMP-REAL
System eth0 c1021d28-7238-4f26-8e92-4aea5d607cab 802-3-ethernet system Mon 08 Dec 2014 12:49:14 PM CST
⑥:检验是否与/etc/sysconfig/network-scripts/ifcfg-eth0里面的UUID值相同(注:检验只在ifcfg-eth0文件能正常查看UUID时才有效)
[root@controller ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 | grep UUID
UUID=c1021d28-7238-4f26-8e92-4aea5d607cab