一KVM网络管理

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一、KVM网络管理

NAT网络拓扑

显示虚拟网卡机口

[root

localhostimages]#brctlshow

bridgenamebridgeidSTPenabledinterfaces

virbr.fa76ayesvirbr0-nic

vnet0

删除虚拟网卡

[root

localhostimages]#brctldelifvirbr0vnet0

[root

localhostimages]#brctlshow

bridgenamebridgeidSTPenabledinterfaces

virbr.fa76ayesvirbr0-nic

[root

localhostimages]#

添加虚拟网卡

[root

localhostimages]#brctladdifvirbr0vnet0

[root

localhostimages]#brctlshow

bridgenamebridgeidSTPenabledinterfaces

virbr.fa76ayesvirbr0-nic

vnet0

[root

localhostimages]#

1.创建虚拟机vm2虚拟网卡的配置文件

[root

localhostnetwork-scripts]#pwd

/etc/sysconfig/network-scripts

[root

localhostnetwork-scripts]#vimifcfg-br0

DEVICE=br0

ONBOOT="yes"

BOOTPROTO=static

DEFROUTE=yes

IPADDR=...

GATEWAY=...2

NETMASK=...0

DNS1=..0.1

DNS2=8.8.8.8

修改宿主机网卡配置文件

[root

localhostnetwork-scripts]#vimifcfg-ens33

DEVICE="ens33"

ONBOOT="yes"

BRIDGE=br0

重启网络服务

[root

localhostnetwork-scripts]#systemctlrestartlibvirtd

[root

localhostnetwork-scripts]#systemctlrestartnetwork

删除桥接网卡步骤：

1.删除br0的配置文件

[root

localhostnetwork-scripts]#rm-rfifcfgbr0

[root

localhostnetwork-scripts]#rm-rfifcfg-ens33

2.修改正常网卡的配置文件

[root

localhostnetwork-scripts]#mvifcfg-ens33.backifcfg-ens33

[root

localhostnetwork-scripts]#

3.重启服务

[root

localhostnetwork-scripts]#systemctlrestartlibvirtd#重启KVM服务

[root

localhostnetwork-scripts]#systemctlrestartnetwork#重启网卡

[root

localhostnetwork-scripts]#

配置文件方式创建nat网络

[root

localhost~]#cp/etc/libvirt/qemu/networks/default.xml/etc/libvirt/qemu/networks/nat1.xml

[root

localhost~]#cd/etc/libvirt/qemu/networks/

[root

localhostnetworks]#vimnat1.xml#修改nat网络配置文件

network

namenat1/name

uuidfc-40fa-4f10-b19a-b09db/uuid

forwardmode=nat/

bridgename=virbr1stp=ondelay=0/

macaddress=52:54:00:0f:a8:61/

ipaddress=...1netmask=...0

dhcp

rangestart=...2end=.../

/dhcp

/ip

/network

重启服务

[root

localhostnetworks]#systemctlrestartlibvirtd

如果是图形化界面就可以选择刚创建的网卡nat1

配置文件方式创建isolated网络

[root

localhostnetworks]#cpdefault.xmlisolated.xml

[root

localhostnetworks]#vimisolated.xml

network

nameisolated/name

uuidfc-40fa-4f10-b09b-b09db/uuid

bridgename=virbr2stp=ondelay=0/

macaddress=52:54:00:0f:a9:6b/

ipaddress=...1netmask=...0

dhcp

rangestart=...2end=.../

/dhcp

/ip

/network

#重启服务

[root

localhostnetworks]#systemctlrestartlibvirtd

#查看所有网络

[root

localhostnetworks]#virshnet-list

名称状态自动开始持久

----------------------------------------------------------

default活动是是

nat1活动否是

#启动网络

[root

localhostnetworks]#virshnet-startisolated

网络isolated已开始

#开机自启动

[root

localhostnetworks]#virshnet-autostartisolated

网络isolated标记为自动启动

#查看所有网络

[root

localhostnetworks]#virshnet-list

名称状态自动开始持久

----------------------------------------------------------

default活动是是

isolated活动是是

nat1活动否是

创建网卡之后，添加即可，添加方式与nat1网卡添加上一致

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