NAT网络

默认安装libvirt的时候，启动了NAT网络网桥virtbr0，并相应启动了dnsmasq服务。不过，对于线上生产环境，不需要使用NAT的话，可以删除掉这个无用网桥。

$ifconfig
...

virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 82:6e:11:03:1f:62  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

$brctl show
bridge name    bridge id        STP enabled    interfaces
virbr0        8000.000000000000    yes

参考关闭

销毁默认网络virtbr0

sudo virsh net-destroy default

显示输出

Network default destroyed

此时再使用 ifconfig 查看，可以看到 virbr0 已经销毁

持久化关闭virtbr0

sudo virsh net-undefine default

显示输出

Network default has been undefined

重启libvirt服务

sudo systemctl restart libvirtd.service

完成后检查一下libvirtd，可以看到进程启动时间已经是当前时间，并使用systemctl status确认一下启动日志

sudo systemctl status libvirtd.service

修改`virbr0`的网段

如果需要修改virbr0的IP地址，可以采用如下方法：

sudo cp /var/lib/libvirt/network/default.xml /tmp/default.xml
sudo vi /tmp/default.xml # edit the ip address
sudo virsh net-destroy default
sudo virsh net-define /tmp/default.xml
sudo virsh net-start default

参考

Previouslibvirtd.log日志显示"invalid argument: disk hdc does not currently have a source assigned"Next远程访问VNC

Last updated 5 years ago

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