19 Jun 2015
nmcli connection show NAME UUID TYPE DEVICE eno16777736 2c818882-b72e-486d-b994-cdcafc17bc7b 802-3-ethernet eno16777736
nmcli con add con-name eth0-static type ethernet ifname eno16777736 Connection 'eth0-static' (0390c01b-84b1-430f-aac3-6ce7ccaf2be2) successfully added. ls /etc/sysconfig/network-scripts/ifcfg-e* /etc/sysconfig/network-scripts/ifcfg-eno16777736 /etc/sysconfig/network-scripts/ifcfg-eth0-static cat /etc/sysconfig/network-scripts/ifcfg-eth0-static TYPE=Ethernet BOOTPROTO=dhcp DEFROUTE=yes PEERDNS=yes PEERROUTES=yes ...... NAME=eth0-static UUID=0390c01b-84b1-430f-aac3-6ce7ccaf2be2 DEVICE=eno16777736 ONBOOT=yes # 修改现有的连接为不自动连接 nmcli con mod "eth0-static" connection.autoconnect no cat /etc/sysconfig/network-scripts/ifcfg-eth0-static | grep "ONBOOT" TYPE=Ethernet BOOTPROTO=dhcp DEFROUTE=yes ...... NAME=eth0-static UUID=0390c01b-84b1-430f-aac3-6ce7ccaf2be2 DEVICE=eno16777736 ONBOOT=no PEERDNS=yes PEERROUTES=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes
由此我们可以发现，nmcli是通过操纵/etc/sysconfig/network-scripts下的网卡配置文件来修改配置的。
同时rhel7里对网络的管理是并不是通过网卡，而是通过连接（connection）来管理的，这样的好处就是我们可以多备几套方案来随时用nmcli命令切换。
# 修改现有链接的属性 # nmcli con mod "eth0-static" <setting>.<property> # 可通过"nmcli con show eth0-static"命令查看上面可用的argument # 通过交互的方式修改链接的属性 nmcli con edit enp2s0 ===| nmcli interactive connection editor |=== Editing existing '802-3-ethernet' connection: 'enp2s0' Type 'help' or '?' for available commands. Type 'describe [<setting>.<prop>]' for detailed property description. You may edit the following settings: connection, 802-3-ethernet (ethernet), 802-1x, ipv4, ipv6, dcb nmcli> # 里面可以输入？来查看操作方法