RHEL7 -- nmcli的使用

查看网络设备的状态:

# nmcli dev status
DEVICE     TYPE              STATE
ens32      --ethernet    connected
eth1       --ethernet    disconnected
lo      loopback  unmanaged  --     

断开网络设备:

# nmcli dev disconnect ens32     #ens32是device名，不是connection名

连接网络设备:

# nmcli dev connect ens32          #ens32是device名，不是connection名

列出所有的connections:

# nmcli con show
NAME   UUID                                  TYPE            DEVICE
eth2   96238a53-4ffd--aa73-15e7b7ae81c5  --ethernet  --
eth1   085c71ca-aac2--a8a5-8e4f239e5e65  --ethernet  --
ens32  10d3aba6-f468-4b6e-b5a7-789c85811c09  --ethernet  ens32
eth3   1ae34078-53db--bd93-ba7bc3adc1b6  --ethernet  --   

列出active状态的connections:

[root@rhce7 ~]# nmcli con show --active
NAME   UUID                                  TYPE            DEVICE
ens32  10d3aba6-f468-4b6e-b5a7-789c85811c09  --ethernet  ens32  

断开connection:

# nmcli con down eth1

激活connection:

# nmcli con up eth1 #这里的eth1是connection名，不是device名

修改connection的配置:

# nmcli con mod ens32 ipv4.addresses "10.10.12.192/24 10.10.12.254" 

添加属性:

# nmcli con mod ens32 +ipv4.dns 192.0.2.1  #关键符号"+"
如果手动修改了ifcfg-*配置文件，需要使用nmcli con reload 来同时NetworkMananger 

添加一个网络连接:

# nmcli con add con-name eth1 type ethernet ifname eth1
Connection 'eth1' (085c71ca-aac2--a8a5-8e4f239e5e65) successfully added.
# nmcli con add con-name eth2 type ethernet ifname eth2 ip4 192.168.56.120/ gw4 192.168.56.254 ipv4.method manual
Connection 'eth2' (96238a53-4ffd--aa73-15e7b7ae81c5) successfully added.

删除网络连接:

# nmcli con del eth2

查看当前网络配置：

# ip add show
: lo: <LOOPBACK,UP,LOWER_UP> mtu  qdisc noqueue state UNKNOWN
    link/loopback ::::: brd :::::
    inet 127.0.0.1/ scope host lo
    inet6 ::/ scope host
       valid_lft forever preferred_lft forever
: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu  qdisc mq state UNKNOWN qlen
    link/ether :::a0::9a brd ff:ff:ff:ff:ff:ff
    inet 10.10.12.190/ brd 10.10.12.255 scope global eth1
    inet6 fe80:::56ff:fea0:729a/ scope link
       valid_lft forever preferred_lft forever
: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu  qdisc mq state UNKNOWN qlen
    link/ether :::a0::2c brd ff:ff:ff:ff:ff:ff
    inet6 fe80:::56ff:fea0:512c/ scope link
       valid_lft forever preferred_lft forever
# ip addr show eth2
: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu  qdisc mq state UNKNOWN qlen
    link/ether :::a0::2c brd ff:ff:ff:ff:ff:ff
    inet6 fe80:::56ff:fea0:512c/ scope link
       valid_lft forever preferred_lft forever
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