RHEL7 添加网卡并设置多个IP地址

时间：2023-03-08 21:25:05

首先在虚拟机管理界面中给该虚拟机添加一块虚拟网卡，VirtualBox虚拟机中要shutdown才能添加。

RHEL7 添加网卡并设置多个IP地址

[root@rhel7 ~]# nmcli device show | grep -i device   --查看网卡设备，我们可以看到新添加的enp0s8

GENERAL.DEVICE:                         virbr0

GENERAL.DEVICE:                         enp0s3

GENERAL.DEVICE:                         virbr0-nic

GENERAL.DEVICE:                         enp0s8

GENERAL.DEVICE:                         lo

[root@rhel7 ~]# nmcli connection show     ---还得添加网卡配置文件才能查看到enp0s8

NAME        UUID                                  TYPE            DEVICE

virbr0-nic  c6a02e0f-24af-4b3b-983d-1643fee355df  generic         virbr0-nic

virbr0      eecfd3a6-4d29-4f9c-a62c-1a30df56e011  bridge          virbr0

enp0s3      df34c879-c2bd-4c82-ae7a-39e39a2228dd  --ethernet  enp0s3

添加enp0s8的网卡配置文件：

[root@rhel7 ~]# nmcli connection add type ethernet con-name enp0s8 ifname enp0s8 autoconnect yes

Connection 'enp0s8' (8bf108aa-9c89-4c2c-a5d3-3d9346b2c644) successfully added.

[root@rhel7 ~]# nmcli connection show

NAME        UUID                                  TYPE            DEVICE

virbr0-nic  c6a02e0f-24af-4b3b-983d-1643fee355df  generic         virbr0-nic

virbr0      eecfd3a6-4d29-4f9c-a62c-1a30df56e011  bridge          virbr0

enp0s3      df34c879-c2bd-4c82-ae7a-39e39a2228dd  --ethernet  enp0s3

enp0s8      8bf108aa-9c89-4c2c-a5d3-3d9346b2c644  --ethernet  enp0s8

配置IP地址及其它信息：

[root@rhel7 ~]# nmcli connection modify enp0s8  ipv4.addresses 192.168.1.200/ ipv4.gateway 192.168.1.99  ipv4.dns 192.168.1.1 ipv4.method manual connection.autoconnect yes

启动enp0s8网卡：

[root@rhel7 ~]# nmcli connection up enp0s8

Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/)

[root@rhel7 ~]# ip a s enp0s8

: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu  qdisc pfifo_fast state UP qlen

    link/ether ::::3c:2c brd ff:ff:ff:ff:ff:ff

    inet 192.168.1.200/ brd 192.168.1.255 scope global enp0s8

       valid_lft forever preferred_lft forever

    inet6 fe80::a00:27ff:fe79:3c2c/ scope link

       valid_lft forever preferred_lft forever

网卡添加配置完成。

============================

给enp0s8再配置一个IP地址192.168.1.201：

[root@rhel7 ~]# nmcli connection modify enp0s8 +ipv4.addresses 192.168.1.201/ ipv4.gateway 192.168.1.99

[root@rhel7 ~]# nmcli connection down enp0s8   --重启网卡

Connection 'enp0s8' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/)

[root@rhel7 ~]# nmcli connection up enp0s8

Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/)

[root@rhel7 ~]# nmcli connection show

NAME        UUID                                  TYPE            DEVICE

virbr0-nic  c6a02e0f-24af-4b3b-983d-1643fee355df  generic         virbr0-nic

virbr0      eecfd3a6-4d29-4f9c-a62c-1a30df56e011  bridge          virbr0

enp0s3      df34c879-c2bd-4c82-ae7a-39e39a2228dd  --ethernet  enp0s3

enp0s8      8bf108aa-9c89-4c2c-a5d3-3d9346b2c644  --ethernet  enp0s8

[root@rhel7 ~]# ip addr show enp0s8 --查看添加成功

: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu  qdisc pfifo_fast state UP qlen

    link/ether ::::3c:2c brd ff:ff:ff:ff:ff:ff

    inet 192.168.1.200/ brd 192.168.1.255 scope global enp0s8

       valid_lft forever preferred_lft forever

    inet 192.168.1.201/ brd 192.168.1.255 scope global secondary enp0s8

       valid_lft forever preferred_lft forever

    inet6 fe80::a00:27ff:fe79:3c2c/ scope link

       valid_lft forever preferred_lft forever

[root@rhel7 ~]#

给enp0s8再配置一个IPv6地址2001::1/64

[root@rhel7 ~]# nmcli connection modify enp0s8  ipv6.method manual ipv6.addresses ::/  ipv6.gateway :: ipv6.dns ::

[root@rhel7 ~]# ping6 ::

connect: Network is unreachable

[root@rhel7 ~]# nmcli connection down enp0s8

Connection 'enp0s8' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/)

[root@rhel7 ~]# nmcli connection up enp0s8

Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/)

[root@rhel7 ~]# ping6 ::

PING ::(::)  data bytes

 bytes from ::: icmp_seq= ttl= time=0.062 ms

 bytes from ::: icmp_seq= ttl= time=0.116 ms

 bytes from ::: icmp_seq= ttl= time=0.119 ms

^C

--- :: ping statistics ---

 packets transmitted,  received, % packet loss, time 2000ms

rtt min/avg/max/mdev = 0.062/0.099/0.119/0.026 ms

[root@rhel7 ~]#

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