有时我们不小心将/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
复制代码
[root@huis ~]# yum provides “*/nmcli”
Loaded plugins：fastestmirror, security
Loading mirror speeds from cached hostfile
* base: mirrors.cug.edu.cn
* extras: mirrors.cug.edu.cn
* updates: centos.ustc.edu.cn
1:NetworkManager-0.8.1-75.el6.i686 : Network connection manager and
: user applications
Repo : base
Matched from:
Filename : /usr/bin/nmcli
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[root@huis ~]# yum -y install NetworkManager
[root@huis ~]# service NetworkManager start
Setting network parameters… [ OK ]
Starting NetworkManager daemon: [ OK ]
[root@huis ~]# 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
5、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@huis ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 | grep UUID
UUID=c1021d28-7238-4f26-8e92-4aea5d607cab
virtualbox复制了虚拟机，重新初始化网卡后，需要对/etc/sysconfig/network-scripts/ifcfg-eth0更新UUID值，虽然不改暂时也没发现有问题。
网上查找需要nmcli工具进行查看。
1.首先我们查看一下nmcli是哪个软件包提供的
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[root@localhost ~]
# yum provides "*/nmcli"
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.163.com
* extras: mirrors.163.com
* updates: mirrors.163.com
1:NetworkManager-0.8.1-113.el6.x86_64 : Network connection manager and user applications
Repo : base
Matched from:
Filename :
/usr/bin/nmcli
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2.安装NetworkManager服务
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[root@localhost ~]
# yum -y install NetworkManager
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启动NetworkManager服务
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[root@localhost ~]
# /etc/init.d/NetworkManager start
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运行nmcli发现有报错
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[root@localhost ~]
# nmcli con
Error: could not connect to D-Bus.
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查看/var/log/messages日志
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[root@localhost ~]
# more /var/log/messages
...
Apr 20 14:53:05 localhost NetworkManager[2013]: <info> NetworkManager (version 0.8.1-113.el6) is starting...
Apr 20 14:53:05 localhost NetworkManager[2013]: <info> Read config
file
/etc/NetworkManager/NetworkManager
.conf
Apr 20 14:53:05 localhost NetworkManager[2013]: <error> [1492671185.606620] [nm-dbus-manager.c:278] nm_dbus_manager_init_bus(): Could not get the system bus. Make sure the message bus daemon is running! Message: Failed to connect to socket
/var/run/dbus/system_bus_socket
: Connection refused
...
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3.需要先启动messagebus，再启动NetworkManager
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[root@localhost ~]
# /etc/init.d/messagebus start
Starting system message bus: [ OK ]
[root@localhost ~]
# /etc/init.d/NetworkManager start
Setting network parameters... [ OK ]
Starting NetworkManager daemon: [ OK ]
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4.此时再运行nmcli即可查看网卡UUID
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[root@localhost ~]
# nmcli con
NAME UUID TYPE SCOPE TIMESTAMP-REAL
System eth0 bbc0e340-6979-4e10-8b98-f1d395e7304e 802-3-ethernet system Thu 20 Apr 2017 02:54:51 PM CST
NAME UUID TYPE SCOPE TIMESTAMP-REAL
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本文转自:
https://blog.csdn.net/justweb/article/details/78990664