kvm 给虚机增加网卡
[root@666 ok]# virsh domiflist c03
Interface Type Source Model MAC
-------------------------------------------------------
vnet1 bridge br0 rtl8139 52:54:00:cf:e1:a3 [root@666 ok]# virsh list
Id Name State
----------------------------------------------------
1 c01 running
2 c03 running
3 c70 running
临时增加网卡:
[root@666 ok]# virsh attach-interface c03 --type bridge --source br0
Interface attached successfully
查看:
[root@666 ok]# virsh domiflist c03
Interface Type Source Model MAC
-------------------------------------------------------
vnet1 bridge br0 rtl8139 52:54:00:cf:e1:a3
vnet3 bridge br0 rtl8139 52:54:00:7e:c2:6a
[root@c03 conf]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:cf:e1:a3 brd ff:ff:ff:ff:ff:ff
inet 10.100.0.61/24 brd 10.100.0.255 scope global eth0
inet6 fe80::5054:ff:fecf:e1a3/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 52:54:00:2b:9e:6c brd ff:ff:ff:ff:ff:ff
永久增加网卡:
命令行增加网卡只保存在内存中,重启就失效,所以要保存在配置文件中
[root@666 ok]# virsh dumpxml c03 >/etc/libvirt/qemu/c03.xml
[root@666 ok]# virsh define /etc/libvirt/qemu/c03.xml
Domain c03 defined from /etc/libvirt/qemu/c03.xml
重启虚机后再次查看网卡:
[root@c03 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:cf:e1:a3 brd ff:ff:ff:ff:ff:ff
inet 10.100.0.61/24 brd 10.100.0.255 scope global eth0
inet6 fe80::5054:ff:fecf:e1a3/64 scope link
valid_lft forever preferred_lft forever
3: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 52:54:00:7e:c2:6a brd ff:ff:ff:ff:ff:ff
增加并配置配置文件:
[root@c03 network-scripts]# cp ifcfg-eth0 ifcfg-eth2^C
[root@c03 network-scripts]# pwd
/etc/sysconfig/network-scripts
[root@c03 network-scripts]# cp ifcfg-eth0 ifcfg-eth2
配改MAC并查看:
DEVICE=eth0 | DEVICE=eth2
HWADDR=52:54:00:CF:E1:A3 | HWADDR=52:54:00:7e:c2:6a
TYPE=Ethernet | TYPE=Ethernet
UUID=4edbb7bf-e64f-402a-854c-ff259250c497 | #UUID=4edbb7bf-e64f-402a-854c-ff259250c497
ONBOOT=yes | ONBOOT=yes
NM_CONTROLLED=yes | NM_CONTROLLED=yes
BOOTPROTO=dhcp | BOOTPROTO=dhcp
查看IP
[root@c03 network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:cf:e1:a3 brd ff:ff:ff:ff:ff:ff
inet 10.100.0.61/24 brd 10.100.0.255 scope global eth0
inet6 fe80::5054:ff:fecf:e1a3/64 scope link
valid_lft forever preferred_lft forever
3: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:7e:c2:6a brd ff:ff:ff:ff:ff:ff
inet 10.100.0.58/24 brd 10.100.0.255 scope global eth2
inet6 fe80::5054:ff:fe7e:c26a/64 scope link
valid_lft forever preferred_lft forever
删除网卡命令:
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:cf:e1:a3 brd ff:ff:ff:ff:ff:ff
inet 10.100.0.61/24 brd 10.100.0.255 scope global eth0
inet6 fe80::5054:ff:fecf:e1a3/64 scope link
valid_lft forever preferred_lft forever
3: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:7e:c2:6a brd ff:ff:ff:ff:ff:ff
inet 10.100.0.58/24 brd 10.100.0.255 scope global eth2
inet6 fe80::5054:ff:fe7e:c26a/64 scope link
valid_lft forever preferred_lft forever
[root@666 ok]# virsh detach-interface c03 --type bridge --mac 52:54:00:7e:c2:6a
Interface detached successfully
查看IP
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:cf:e1:a3 brd ff:ff:ff:ff:ff:ff
inet 10.100.0.61/24 brd 10.100.0.255 scope global eth0
inet6 fe80::5054:ff:fecf:e1a3/64 scope link
valid_lft forever preferred_lft forever
再次保存配置文件:
[root@666 ok]# virsh dumpxml c03 >/etc/libvirt/qemu/c03.xml
[root@666 ok]# virsh define /etc/libvirt/qemu/c03.xml
Domain c03 defined from /etc/libvirt/qemu/c03.xml
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