CentOS7 安装 KVM-白红宇

CentOS7 安装 KVM

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发布时间：2019-05-25

本文共 3562 字，大约阅读时间需要 11 分钟。

转自

http://1.chaoxu.sinaapp.com/archives/1739

前言

看过网上的很多安装教程，基本都是一条命令安装后，便直接创建虚拟机。其实有很多的坑要么是不能创建，要么就是各种失败。所以，在这里，我给出自己的完整笔记，尽量避免大家去跳坑。

1、安装

# yum -y install qemu-kvm libvirt virt-install bridge-utils

2、配置

# 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" # Whether libvirt should dynamically change file ownership# to match the configured user/group above. Defaults to 1.# Set to 0 to disable file ownership changes.dynamic_ownership = 0重启服务# systemctl restart libvirtd

2、加载kvm

# lsmod | grep kvm# systemctl start libvirtd# systemctl enable libvirtd# ip a# nmcli c add type bridge autoconnect yes con-name br0 ifname br0

说明

nmcli是网络管理工具NetworkManager包的命令行工具。

3、编辑网络配置文件

# cd /etc/sysconfig/network-scripts/ # vim ifcfg-br0DEVICE=br0TYPE=BridgeBOOTPROTO=noneNAME=br0ONBOOT=yesIPADDR=192.168.1.133GATEWAY=192.168.1.1NETMASK=255.255.255.0DNS1=192.168.1.1# vim ifcfg-eno16777736  TYPE=EthernetBRIDGE=br0BOOTPROTO=noneDEFROUTE=yesPEERDNS=yesPEERROUTES=yesNAME=eno16777736UUID=d250bd30-01e7-4147-abb1-83382d7a7effDEVICE=eno16777736ONBOOT=yes

重启网络

#  systemctl restart network

4、最后，查看网络

# ip addr1: lo: 
    
      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 forever2: eno16777736: 
     
       mtu 1500 qdisc pfifo_fast master br0 state UP qlen 1000    link/ether 00:0c:29:ca:b9:21 brd ff:ff:ff:ff:ff:ff3: virbr0: 
      
        mtu 1500 qdisc noqueue state DOWN    link/ether 52:54:00:8b:52:5c brd ff:ff:ff:ff:ff:ff    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0       valid_lft forever preferred_lft forever4: virbr0-nic: 
       
         mtu 1500 qdisc pfifo_fast master virbr0 state DOWN qlen 500    link/ether 52:54:00:8b:52:5c brd ff:ff:ff:ff:ff:ff6: br0: 
        
          mtu 1500 qdisc noqueue state UP    link/ether 00:0c:29:ca:b9:21 brd ff:ff:ff:ff:ff:ff    inet 192.168.1.133/24 brd 192.168.1.255 scope global br0       valid_lft forever preferred_lft forever    inet6 fe80::20c:29ff:feca:b921/64 scope link       valid_lft forever preferred_lft forever

注意，centos 7默认命令的输出格式，确实不好看，建议安装net-tools工具，使用ifconfig命令查看。

5、一个安装列子

# mkdir -p /var/kvm/images # create a new Storage Pool# virt-install \--name centos7 \--ram 4096 \--disk path=/var/kvm/images/centos7.img,size=30 \--vcpus 2 \--os-type linux \--os-variant rhel7 \--network bridge=br0 \--graphics none \--console pty,target_type=serial \--location=/data/centos7.iso \--extra-args 'console=ttyS0,115200n8 serial'Starting install...# start installation

6、、安装spice服务

为了后续使用Spice协议，连接KVM创建的虚拟机，我们需要安装spice服务。

# yum -y install spice-server spice-protocol

7、一个使用Spice的案例

# virsh edit centos7 
     
    
     centos7
      
    
     b38a50ca-a1ae-4d37-ba10-caf1e05b43ce
      
    
     4194304
      
    
     4194304
      
    
     2
      .  .  .      # add follows      # set any password for "passwd=***" section      # specify a uniq number for "sound" section "slot='0x06'"      # the "slot='0x02'" in video section is fixed number for graphics     
          
         
        
          
     
    
        
         
          
     
    
      
   # virsh start centos7

转载地址：http://elpsi.baihongyu.com/

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