nm(Network Manager)家族(CentOS 7专用)：nmcli

nmcli命令

• 格式：
   nmcli [OPTIONS...] {help | general | networking | radio | connection | device | agent | monitor} [COMMAND] [ARGUMENTS...]
  • device：查看并管理网络接口
     COMMAND := { status | show | connect | disconnect | delete |wifi | wimax }

  [root@node1 network-scripts]# nmcli device status 
  DEVICE      TYPE      STATE      CONNECTION         
  ens37       ethernet  connected  Wired connection 1 
  ens33       ethernet  connected  ens33              
  virbr0      bridge    connected  virbr0             
  lo          loopback  unmanaged  --                 
  virbr0-nic  tun       unmanaged  --                 
  [root@node1 network-scripts]# nmcli device show   
  GENERAL.DEVICE:                         ens37
  GENERAL.TYPE:                           ethernet
  GENERAL.HWADDR:                         00:0C:29:0E:AF:8A
  GENERAL.MTU:                            1500
  GENERAL.STATE:                          100 (connected)
  GENERAL.CONNECTION:                     Wired connection 1
  GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/4
  WIRED-PROPERTIES.CARRIER:               on
  IP4.ADDRESS[1]:                         192.168.1.115/24
  IP4.ADDRESS[2]:                         192.168.1.115/8
  IP4.GATEWAY:                            192.168.1.1
  IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 192.168.1.1, mt = 101
  IP4.ROUTE[2]:                           dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 101
  IP4.ROUTE[3]:                           dst = 192.0.0.0/8, nh = 0.0.0.0, mt = 101
  IP4.DNS[1]:                             192.168.1.1
  IP6.GATEWAY:                            --
  IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 101
  IP6.ROUTE[2]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
  ...
  

  • connection：启动、停止和管理网络连接
     COMMAND := { show | up | down | add | edit | modify | delete | reload | load }

  [root@node1 network-scripts]# nmcli connection show 
  NAME                UUID                                  TYPE      DEVICE 
  ens33               fac256e3-e571-4ef0-9770-d8c208eaeabf  ethernet  ens33  
  ens37               4a5516a4-dfa4-24af-b1c4-e843e312e2fd  ethernet  ens37  
  virbr0              849d7516-1749-4cda-9ce5-da8924a6a220  bridge    virbr0 
  Wired connection 1  1cd19407-0ba6-34c4-a819-d9495b44ee1c  ethernet  --     
  [root@node1 network-scripts]# nmcli connection down ens37
  Connection 'ens37' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/10)
  [root@node1 network-scripts]# nmcli connection show      
  NAME                UUID                                  TYPE      DEVICE 
  ens33               fac256e3-e571-4ef0-9770-d8c208eaeabf  ethernet  ens33  
  virbr0              849d7516-1749-4cda-9ce5-da8924a6a220  bridge    virbr0 
  ens37               4a5516a4-dfa4-24af-b1c4-e843e312e2fd  ethernet  --     
  Wired connection 1  1cd19407-0ba6-34c4-a819-d9495b44ee1c  ethernet  --     
  [root@node1 network-scripts]# nmcli connection up ens37  
  Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/11)
  [root@node1 network-scripts]# nmcli connection show    
  NAME                UUID                                  TYPE      DEVICE 
  ens33               fac256e3-e571-4ef0-9770-d8c208eaeabf  ethernet  ens33  
  ens37               4a5516a4-dfa4-24af-b1c4-e843e312e2fd  ethernet  ens37  
  virbr0              849d7516-1749-4cda-9ce5-da8924a6a220  bridge    virbr0 
  Wired connection 1  1cd19407-0ba6-34c4-a819-d9495b44ee1c  ethernet  --     
  [root@node1 network-scripts]# nmcli connection add con-name eth0 ipv4.addresses 1.1.1.1 ipv4.method manual type ethernet ifname ens37
  Connection 'eth0' (7fe1a2f8-27ca-4451-904f-cbdadcaf9215) successfully added.
  [root@node1 network-scripts]# nmcli connection show 
  NAME                UUID                                  TYPE      DEVICE 
  ens33               fac256e3-e571-4ef0-9770-d8c208eaeabf  ethernet  ens33  
  ens37               4a5516a4-dfa4-24af-b1c4-e843e312e2fd  ethernet  ens37  
  virbr0              849d7516-1749-4cda-9ce5-da8924a6a220  bridge    virbr0 
  eth0                7fe1a2f8-27ca-4451-904f-cbdadcaf9215  ethernet  --     
  Wired connection 1  1cd19407-0ba6-34c4-a819-d9495b44ee1c  ethernet  --     
  [root@node1 network-scripts]# nmcli connection delete eth0 
  Connection 'eth0' (7fe1a2f8-27ca-4451-904f-cbdadcaf9215) successfully deleted.
  [root@node1 network-scripts]# nmcli connection show        
  NAME                UUID                                  TYPE      DEVICE 
  ens33               fac256e3-e571-4ef0-9770-d8c208eaeabf  ethernet  ens33  
  ens37               4a5516a4-dfa4-24af-b1c4-e843e312e2fd  ethernet  ens37  
  virbr0              849d7516-1749-4cda-9ce5-da8924a6a220  bridge    virbr0 
  Wired connection 1  1cd19407-0ba6-34c4-a819-d9495b44ee1c  ethernet  --     
  

  modify [ id | uuid | path ] [+|-].
  如何修改IP地址等属性：
   [root@node1 ~]# nmcli connection modify IFACE [+|-]setting.property value
    ipv4.address
    ipv4.gateway
    ipv4.dns1
    ipv3.method