使用virt-install创建虚拟机

本文参考CentOS 7.5 安装KVM虚拟机(Linux)

主机系统：CentOS7.6

安装前准备

依赖包安装

[root@Dell ~]# yum install -y qemu-kvm libvirt virt-install bridge-utils

权限调整

将user和group前面的#去掉，让root用户可以操作

[root@Dell ~]# vim /etc/libvirt/qemu.conf

# Some examples of valid values are:
#
#       user = "qemu"   # A user named "qemu"
#       user = "+0"     # Super user (uid=0)
#       user = "100"    # A user named "100" or a user with uid=100
#
user = "root"

# The group for QEMU processes run by the system instance. It can be
# specified in a similar way to user.
group = "root"

重启libvirtd服务

[root@Dell ~]# systemctl daemon-reload		//重载配置
[root@Dell ~]# systemctl restart libvirtd		//重启libvirtd服务
[root@Dell ~]# systemctl status libvirtd		//查看libvirtd服务状态
● libvirtd.service - Virtualization daemon
   Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
   Active: active (running) since 二 2019-04-23 16:00:47 CST; 7s ago
     Docs: man:libvirtd(8)
           https://libvirt.org
 Main PID: 23595 (libvirtd)
    Tasks: 19 (limit: 32768)
   CGroup: /system.slice/libvirtd.service
           ├─ 5716 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_...
           ├─ 5717 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_...
           └─23595 /usr/sbin/libvirtd

镜像文件下载

[root@Dell ~]# mkdir images
[root@Dell ~]# cd images/
[root@Dell ~]# wget https://mirrors6.tuna.tsinghua.edu.cn/centos/7.6.1810/isos/x86_64/CentOS-7-x86_64-Minimal-1810.iso

安装虚拟机

本文将用于安装的镜像文件下载到/root/images文件夹中，虚拟机磁盘文件放于/root下。

[root@Dell ~]# virt-install \
> --virt-type=kvm \
> --name=tes