Debian11安装KVM

发表于 分类于

1. 安装基础

1
sudo apt install -y qemu-kvm virt-manager libvirt-clients virt-viewer libvirt-daemon-system bridge-utils virtinst

将你的用户添加到libvirt，方便rootless管理

1
2
3
# 切换到su用户
su -l
adduser 你的账户 libvirt

2.网络配置

2.1 网卡

检查已有网络

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
# 记住你的网卡名称
ip addr show
# 类似如下，我的网卡是enp6s0
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    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: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
    link/ether 2a:03:3e:20:0a:00 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.99/24 brd 192.168.0.255 scope global dynamic noprefixroute enp6s0
       valid_lft 40724sec preferred_lft 40724sec
    inet6 240e:388:8aff:5500::489/128 scope global dynamic noprefixroute 
       valid_lft 1425sec preferred_lft 1425sec
    inet6 240e:388:8aff:5500:b65c:688b:f9ec:16b3/64 scope global temporary dynamic 
       valid_lft 1426sec preferred_lft 1426sec
    inet6 240e:388:8aff:5500:2803:3eff:fe20:aa8/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 1426sec preferred_lft 1426sec
    inet6 fe80::2803:3eff:fe20:aa8/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

检查虚拟网络并初始化

1
2
3
4
5
6
7
8
# 检查初始状况
virsh net-list --all
virsh net-start default
virsh net-autostart default
# 再检查
virsh net-list --all
# 增强网络io
modprobe vhost_net

2.2 增强桥接网卡

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
# 检查桥接网卡
brctl show
# 创建网卡
brctl addbr br0
# 将网卡桥接到物理网卡，我的物理网卡同ip addr show里展示的enp6s0
brctl addif br0 enp6s0
brctl show 

# 网卡配置文件中，添加虚拟网卡
vim /etc/network/interfaces.d/br0
# 新增如下配置，通过dhcp获得ip
auto br0
iface br0 inet dhcp
bridge_ports enp6s0
# 保存退出，重启网络
systemctl restart networking

3. 启动KVM

应用里可以直接启动，virtual machine。