linux 网络管理之nmcli命令详解


nmcli是网络管理命令行工具,该命令可以完成网卡上所有的配置工作,并且可以写入配置文件,永久生效
一、直接回车

[root@Ceph-247 ~]# nmcli
eth3: connected to System eth3
        "Intel 82576"
        ethernet (igb), 00:1B:21:DA:3F:4B, hw, mtu 1500
        ip4 default
        inet4 10.229.37.247/24
        route4 10.229.37.0/24
        route4 0.0.0.0/0
        inet6 fe80::21b:21ff:feda:3f4b/64
        route6 ff00::/8
        route6 fe80::/64

ens2f0: connected to ens2f0
        "Mellanox MT27710"
        ethernet (mlx5_core), 84:13:9F:32:2D:6E, hw, mtu 1500
        inet4 192.168.180.247/24
        route4 192.168.180.0/24
        inet6 fe80::5ea5:d4ee:6001:fc74/64
        route6 fe80::/64
        route6 ff00::/8

二、nmcli connection

  • nmcli c show (nmcli connection show)查看连接信息
[root@Ceph-247 ~]# nmcli c show
NAME                    UUID                                  TYPE           DEVICE
System eth3             c5ca8081-6db2-4602-4b46-d771f4330a6d  ethernet       eth3
ens2f0                  ed1882d4-49bb-f7aa-26b6-8d587ab08855  ethernet       ens2f0
ens2f1                  22c030ed-9cf6-8eb4-c21a-cd9ff42909d8  ethernet       ens2f1
interface-br_comm_port  bbd5bdfb-9550-4dff-a280-e704c69e9766  ovs-interface  br_comm_port
interface-eth0          4351e6b2-31da-4db7-baed-a55974499ccf  ovs-interface  eth0
interface-test          091ba1f9-0d4a-4380-ada0-a09af5b3cceb  ovs-interface  test
bridge-br_comm          084c09d3-0984-4551-b2ce-da3f7dcb3660  ovs-bridge     br_comm
bridge-DVS01_dp         de204b0a-c29f-49c7-9fff-c08c1f52f9ff  ovs-bridge     DVS01_dp
interface-br_comm       fc7ca762-1b26-4cdb-909c-2e9feb2aa53e  ovs-interface  br_comm
interface-DVS01_dp      a4ebed8f-3b66-4f43-9db8-28826bc41920  ovs-interface  DVS01_dp
port-br_comm            4c384c28-4ae0-46f6-9901-20ea0645082a  ovs-port       br_comm
port-br_comm_port       8598f75b-1921-49e8-b45b-627e78652d52  ovs-port       br_comm_port
port-DVS01_dp           c0032289-6117-4d09-872e-08f1cacebffa  ovs-port       DVS01_dp
port-ens8f3             5dbcc0e8-1c94-40ae-a88d-f2560e496ae0  ovs-port       ens8f3
port-eth0               02272675-fe85-44eb-89d5-56f8de367bee  ovs-port       eth0
port-test               1ade442b-2831-44a2-9530-ac5d2cc8fa4a  ovs-port       test
ens8f0                  e3112efd-8246-4475-8ce1-3df323e3df2b  ethernet       --
ens8f1                  be7a30ef-a877-44d2-9c83-82588a50f46e  ethernet       --
ens8f2                  90e637df-e4a7-488a-a638-a9bec7c318f3  ethernet       --
interface-ens8f3        6eb05d2b-df80-4fbf-9578-3be43f612d36  ethernet       --
System ens8f3           1af65176-3348-5da3-2312-af43e7225375  ethernet       --
Wired connection 1      03466844-894c-3a1b-8c2c-f4821a90f0df  ethernet       --
Wired connection 2      dd32d6f8-0813-31b4-8e09-b54ac8e4ed5a  ethernet       --

三、nmcli device 查看和管理网络接口信息

  • nmcli device status 查看网络接口信息
[root@Ceph-247 ~]# nmcli device status
DEVICE        TYPE           STATE        CONNECTION
eth3          ethernet       connected    System eth3
ens2f0        ethernet       connected    ens2f0
ens2f1        ethernet       connected    ens2f1
br_comm_port  ovs-interface  connected    interface-br_comm_port
eth0          ovs-interface  connected    interface-eth0
test          ovs-interface  connected    interface-test
DVS01_dp      ovs-bridge     connected    bridge-DVS01_dp
br_comm       ovs-bridge     connected    bridge-br_comm
DVS01_dp      ovs-interface  connected    interface-DVS01_dp
br_comm       ovs-interface  connected    interface-br_comm
DVS01_dp      ovs-port       connected    port-DVS01_dp
br_comm       ovs-port       connected    port-br_comm
br_comm_port  ovs-port       connected    port-br_comm_port
ens8f3        ovs-port       connected    port-ens8f3
eth0          ovs-port       connected    port-eth0
test          ovs-port       connected    port-test
ens8f0        ethernet       unavailable  --
ens8f1        ethernet       unavailable  --
eth2          ethernet       unavailable  --
lo            loopback       unmanaged    --
  • nmcli device show ens2f1 查看网卡地址信息
[root@Ceph-251 rules.d]# nmcli device show ens2f1
GENERAL.DEVICE:                         ens2f1
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         84:13:9F:32:2D:93
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connected)
GENERAL.CONNECTION:                     ens2f1
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/4
WIRED-PROPERTIES.CARRIER:               on
IP4.ADDRESS[1]:                         192.168.181.251/24
IP4.GATEWAY:                            --
IP4.ROUTE[1]:                           dst = 192.168.181.0/24, nh = 0.0.0.0, mt = 101
IP6.ADDRESS[1]:                         fe80::b7dc:64f7:64e0:3b65/64
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 101
IP6.ROUTE[2]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
[root@Ceph-251 rules.d]# nmcli device show ens2f1 | grep -i hwaddr
GENERAL.HWADDR:                         84:13:9F:32:2D:93

四、nmcli networking 管理网络状态

  • nmcli networking
[root@Ceph-251 rules.d]# nmcli networking
enabled
[root@Ceph-251 rules.d]# nmcli networking help
Usage: nmcli networking { COMMAND | help }
COMMAND := { [ on | off | connectivity ] }
  on 启动网络
  off 关闭网络
  connectivity [check]  连接状态
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