virtualbox虚拟机在线增加网卡、调整cpu和内存
不重启虚拟机在线增加网卡# virsh domiflist daixuan2//查看daixuan2子机的网卡列表InterfaceType Source Model MAC-------------------------------------------------------vnet2 bridge br1 virtio 52:54:00:3a:2a:71命令行增加一块网卡:# virsh attach-interface daixuan2 --type bridge --source br1成功附加接口
命令行增加的网卡只保存在内存中，重启就失效，所以需要保存到配置文件中，其中 /etc/libvirsh/qemu/daixuan2.xml 为daixuan2子机的配置文件# virsh dumpxml daixuan2 > /etc/libvirt/qemu/daixuan2.xml# virsh console daixuan2连接到域 daixuan2
在线增加了eth3网卡# ifconfig -aeth3 Link encap:EthernetHWaddr 52:54:00:3A:2A:71 BROADCAST MULTICASTMTU:1500Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b)TX bytes:0 (0.0 b)
eth4 Link encap:EthernetHWaddr 52:54:00:A6:C7:6A BROADCAST MULTICASTMTU:1500Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b)TX bytes:0 (0.0 b) Interrupt:11 Base address:0x8000
lo Link encap:Local Loopback inet addr:127.0.0.1Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNINGMTU:65536Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b)TX bytes:0 (0.0 b)调整cpu和内存查看子机配置：
virsh dominfo daixuan1
# virsh edit daixuan1
修改：
<memory unit='KiB'>524288</memory> //最大可用内存
<currentMemory unit='KiB'>524288</currentMemory> //现在的内存
<vcpu placement='static'>1</vcpu> //cpu核数
为：
<memory unit='KiB'>624288</memory>
<currentMemory unit='KiB'>624288</currentMemory>
<vcpu placement='static'>2</vcpu>
重启虚拟机：
virsh destroy daixuan1
virsh start daixuan1
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