# 虚拟化

KVM：安装

这是使用KVM（基于内核的虚拟机）+QEMU的虚拟化配置。  
它要求计算机上的CPU具有英特尔VT或AMD-V功能。

<table class="base" id="bkmrk-%5B1%5D-%E5%AE%89%E8%A3%85%E6%89%80%E9%9C%80%E7%9A%84%E8%BD%AF%E4%BB%B6%E5%8C%85%E3%80%82" summary="1"><tbody><tr><td class="num">\[1\]</td><td>安装所需的软件包。</td></tr></tbody></table>

```
[root@dlp ~]# dnf -y install qemu-kvm libvirt virt-install
# confirm modules are loaded
[root@dlp ~]# lsmod | grep kvm 
kvm_intel             331776  0
kvm                  1019904  1 kvm_intel
irqbypass              16384  1 kvm

[root@dlp ~]# systemctl enable --now libvirtd 
```

<table class="base" id="bkmrk-%5B2%5D-%E4%B8%BAkvm%E8%99%9A%E6%8B%9F%E6%9C%BA%E9%85%8D%E7%BD%AEbridge%E7%BD%91" summary="2"><tbody><tr><td class="num">\[2\]</td><td>为KVM虚拟机配置Bridge网络。  
为您自己的环境替换接口名称\[enp1s0\]。</td></tr></tbody></table>

```
# add bridge [br0]
[root@dlp ~]# nmcli connection add type bridge autoconnect yes con-name br0 ifname br0 
Connection 'br0' (80672c58-969e-4e7e-9e09-c4baa6117afb) successfully added.
# set IP address for [br0]
[root@dlp ~]# nmcli connection modify br0 ipv4.addresses 10.0.0.30/24 ipv4.method manual 
# set Gateway for [br0]
[root@dlp ~]# nmcli connection modify br0 ipv4.gateway 10.0.0.1 
# set DNS for [br0]
[root@dlp ~]# nmcli connection modify br0 ipv4.dns 10.0.0.10 
# set DNS search base for [br0]
[root@dlp ~]# nmcli connection modify br0 ipv4.dns-search srv.world 
# remove the current interface
[root@dlp ~]# nmcli connection del enp1s0 
# add the removed interface again as a member of [br0]
[root@dlp ~]# nmcli connection add type bridge-slave autoconnect yes con-name enp1s0 ifname enp1s0 master br0 
# restart
[root@dlp ~]# reboot 
[root@dlp ~]# ip addr 
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: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UP group default qlen 1000
    link/ether 52:54:00:aa:86:00 brd ff:ff:ff:ff:ff:ff
3: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 9a:7e:5f:73:79:d6 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.30/24 brd 10.0.0.255 scope global noprefixroute br0
       valid_lft forever preferred_lft forever
```