作用：用于管制 NetworkManager 的命令行工具.

1. 查看连贯

列举出所有的连贯：

[root@localhost ming]# nmcli connection show NAME    UUID                                  TYPE      DEVICE enp0s3  08e656c0-38ac-4cd1-b885-ce919221a530  ethernet  enp0s3 virbr0  37b8848a-8e82-4428-b286-a48f237649d1  bridge    virbr0

查看某个连贯的具体信息：

[root@localhost ming]# nmcli connection show enp0s3connection.id:                          enp0s3connection.uuid:                        08e656c0-38ac-4cd1-b885-ce919221a530connection.stable-id:                   --connection.type:                        802-3-ethernetconnection.interface-name:              enp0s3connection.autoconnect:                 yes...

2. 新建连贯

为网卡 enp0s3 创立名为 conn1 的连贯.

[root@localhost ming]# nmcli connection add type ethernet con-name conn1 ifname enp0s3 Connection 'conn1' (a64c5e48-eb89-41eb-81c5-6404f8379ee9) successfully added.[root@localhost ming]# ls /etc/sysconfig/network-scripts/ | grep conn1ifcfg-conn1

3. 启用、敞开连贯

[root@localhost ming]# nmcli connection up conn1 Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/4)[root@localhost ming]# nmcli connection down conn1 Connection 'conn1' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/4)

4. 批改连贯：IP地址

留神：批改之后须要从新加载连贯，nmcli connection reload.

设置 IP 地址：如果已有 IP 地址，则将 IP 地址批改为新的地址；且如果有多个的话，批改之后也只会剩下新指定的地址.

[root@localhost ming]# nmcli connection modify conn1 ipv4.addresses 20.0.0.11/24[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1 ...IPADDR=20.0.0.11PREFIX=24

增加 IP 地址：

[root@localhost ming]# nmcli connection modify conn1 +ipv4.addresses 30.0.0.10/24[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1 ...IPADDR=20.0.0.11PREFIX=24IPADDR1=30.0.0.10PREFIX1=24

删除 IP 地址：

[root@localhost ming]# nmcli connection modify conn1 -ipv4.addresses 30.0.0.10/24[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1 ...IPADDR=20.0.0.11PREFIX=24

5. 批改连贯：DNS

设置 DNS：

[root@localhost ming]# nmcli connection modify conn1 ipv4.dns 8.8.8.8

减少 DNS：

[root@localhost ming]# nmcli connection modify conn1 +ipv4.dns 114.114.114.114

删除 DNS：

[root@localhost ming]# nmcli connection modify conn1 -ipv4.dns 114.114.114.114

6. 批改连贯：路由

设置路由：

[root@localhost ming]# nmcli connection modify conn1 ipv4.routes "20.0.0.0/24 10.0.0.1"[root@localhost ming]# cat /etc/sysconfig/network-scripts/route-conn1 ADDRESS0=20.0.0.0NETMASK0=255.255.255.0GATEWAY0=10.0.0.1

减少路由：

[root@localhost ming]# nmcli connection modify conn1 +ipv4.routes "30.0.0.0/24 10.0.0.1"[root@localhost ming]# cat /etc/sysconfig/network-scripts/route-conn1 ADDRESS0=20.0.0.0NETMASK0=255.255.255.0GATEWAY0=10.0.0.1ADDRESS1=30.0.0.0NETMASK1=255.255.255.0GATEWAY1=10.0.0.1

删除路由：

[root@localhost ming]# nmcli connection modify conn1 -ipv4.routes "30.0.0.0/24 10.0.0.1"[root@localhost ming]# nmcli connection modify conn1 -ipv4.routes "20.0.0.0/24 10.0.0.1"[root@localhost ming]# cat /etc/sysconfig/network-scripts/route-conn1 [root@localhost ming]#

7. 批改连贯：网关

设置网关：

[root@localhost ming]# nmcli connection modify conn1 ipv4.gateway 20.0.0.1[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1 ...GATEWAY=20.0.0.1

此处 +ipv4.gateway 的性能等同于 ipv4.gateway. 而且 -ipv4.gateway 不会删除网关.

删除网关：

[root@localhost ming]# nmcli connection modify conn1 ipv4.gateway 0.0.0.0[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1 | grep GATEWAY[root@localhost ming]#

8. 批改连贯：主动连贯

设置主动连贯：

[root@localhost ming]# nmcli connection modify conn1 connection.autoconnect no[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1...ONBOOT=no...

勾销主动连贯：

[root@localhost ming]# nmcli connection modify conn1 connection.autoconnect yes[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1...ONBOOT=yes...

9. 删除连贯

[root@localhost ming]# nmcli connection delete conn1 Connection 'conn1' (a64c5e48-eb89-41eb-81c5-6404f8379ee9) successfully deleted.[root@localhost ming]# cat /etc/sysconfig/network-scripts/ifcfg-conn1cat: /etc/sysconfig/network-scripts/ifcfg-conn1: No such file or directory

10. 从新加载连贯

[root@localhost ming]# nmcli connection reload

11. 查看设施状态

[root@localhost ming]# nmcli device statusDEVICE      TYPE      STATE      CONNECTION enp0s3      ethernet  connected  enp0s3     virbr0      bridge    connected  virbr0     lo          loopback  unmanaged  --         virbr0-nic  tun       unmanaged  --

12. 查看某个设施的详细信息

[root@localhost ming]# nmcli device show enp0s3 GENERAL.DEVICE:                         enp0s3GENERAL.TYPE:                           ethernetGENERAL.HWADDR:                         08:00:27:96:37:17GENERAL.MTU:                            1500GENERAL.STATE:                          100 (connected)GENERAL.CONNECTION:                     enp0s3GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnectioWIRED-PROPERTIES.CARRIER:               onIP4.ADDRESS[1]:                         10.0.2.15/24IP4.GATEWAY:                            10.0.2.2IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 10.0.2.2, mt = 100IP4.ROUTE[2]:                           dst = 10.0.2.0/24, nh = 0.0.0.0, mt = 100IP4.DNS[1]:                             222.201.130.30IP4.DNS[2]:                             222.201.130.33IP6.ADDRESS[1]:                         fe80::6a06:7351:c053:d277/64IP6.GATEWAY:                            --IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 100IP6.ROUTE[2]:                           dst = ff00::/8, nh = ::, mt = 256, table=255

13. 设置设施属性

新建一个网桥：

[root@localhost ming]# brctl addbr br0[root@localhost ming]# nmcli device statusDEVICE      TYPE      STATE      CONNECTION enp0s3      ethernet  connected  enp0s3     virbr0      bridge    connected  virbr0     br0         bridge    unmanaged  --         
[root@localhost ming]# nmcli device set br0 managed yes[root@localhost ming]# nmcli device statusDEVICE      TYPE      STATE         CONNECTION enp0s3      ethernet  connected     enp0s3     virbr0      bridge    connected     virbr0     br0         bridge    disconnected  --

设置/勾销主动连贯：

[root@localhost ming]# nmcli device set br0 autoconnect yes[root@localhost ming]# nmcli device set br0 autoconnect no

14. 连贯设施

为 br0 新建一个连贯：

[root@localhost ming]# nmcli connection add type bridge con-name conn-br0 ifname br0 ip4 30.0.0.1/24Connection 'conn-br0' (b2dbe817-7986-4c8f-b421-ae6a42efd5fa) successfully added.[root@localhost ming]# nmcli connection up conn-br0 Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/11)

而后连贯设施：

[root@localhost ming]# nmcli device connect br0 Device 'br0' successfully activated with 'b2dbe817-7986-4c8f-b421-ae6a42efd5fa'.[root@localhost ming]# nmcli device status DEVICE      TYPE      STATE      CONNECTION enp0s3      ethernet  connected  enp0s3     br0         bridge    connected  conn-br0   virbr0      bridge    connected  virbr0

15. 断开连接

[root@localhost ming]# nmcli device disconnect br0Device 'br0' successfully disconnected.[root@localhost ming]# nmcli device status DEVICE      TYPE      STATE         CONNECTION enp0s3      ethernet  connected     enp0s3     virbr0      bridge    connected     virbr0     br0         bridge    disconnected  --

16. 删除设施

只能删除虚构设施.

[root@localhost ming]# nmcli device delete br0Device 'br0' successfully removed.