kvm虚拟机的桥接网络创建

一、在VMware上打开DHCP功能

image.png image.png

二、创建桥接网卡

virsh iface-bridge eth0 br0

image.png

三、创建虚拟桥接磁盘

qemu-img create -f qcow2 -b web01.qcow2  bridge.qcow2

image.png

四、创建桥接模式虚拟机bridge

virt-install --virt-type kvm --os-type=linux --os-variant rhel7 --name bridge --memory 1024 --vcpus 1 --disk /data/bridge.qcow2 --boot hd --network bridge=br0 --graphics vnc,listen=0.0.0.0 --noautoconsole

image.png

五、检查虚拟机运行状态

[root@kvm01 ~]# virsh list
 Id    名称                         状态
----------------------------------------------------
 1     bridge                         running
 2     web-nginx                      running

六、使用VNC-Viewer客户端远程连接工具登录虚拟机，查看ip

image.png

七、在宿主机上连接10.0.0.128虚拟机（测试）

[root@kvm01 ~]# ssh root@10.0.0.128
root@10.0.0.128's password: 
Last login: Tue Jul 16 12:24:47 2019 from 10.0.0.10
[root@zwb ~]# lscpu |grep -i 'kvm'
超管理器厂商：  KVM
[root@zwb ~]# ip add
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
       valid_lft forever preferred_lft forever
    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 52:54:00:3f:5c:a0 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.128/24 brd 10.0.0.255 scope global dynamic eth0
       valid_lft 1249sec preferred_lft 1249sec
    inet6 fe80::5054:ff:fe3f:5ca0/64 scope link 
       valid_lft forever preferred_lft forever

八、网络报错解决：

image.png

1.
echo  'DEVICE=eth0
ONBOOT=yes
BRIDGE="br0"'  >/etc/sysconfig/network-scripts/ifcfg-eth0
2.
echo  'DEVICE="br0"
ONBOOT="yes"
TYPE="Bridge"
BOOTPROTO="none"
IPADDR="10.0.0.10"
NETMASK="255.255.255.0"
GATEWAY="10.0.0.254"
STP="on"
DELAY="0"'  >/etc/sysconfig/network-scripts/ifcfg-br0