centos系統中kvm qemu 虛擬機器安裝配置教程

二，安裝配置KVM

代碼如下	複製代碼
# yum -y install kvm python-virtinst libvirt bridge-utils ＼  virt-manager qemu-kvm-tools virt-viewer virt-v2v qemu-kvm tunctl    [root@localhost ~]#vim /etc/sysconfig/selinux //關閉selinux    SELINUX=disabled    [root@localhost ~]#reboot    [root@localhost ~]# cat /etc/redhat-release  CentOS release 6.5 (Final)    //centos 6.5

三，啟動libvirtd

代碼如下	複製代碼
[root@localhost ~]# /etc/init.d/libvirtd start  //啟動    [root@localhost ~]# ps -e|grep libvirtd   //查看是否啟動  19458 ?        00:00:01 libvirtd

四，查看kvm模組是否正確載入

代碼如下	複製代碼
[root@localhost ~]# lsmod |grep kvm  kvm_intel              54285  0  kvm                   333172  1 kvm_intel

五，配置網路橋接

代碼如下

複製代碼

[root@localhost network-scripts]# cat ifcfg-eth0 |awk '{if($0 !~ /^$/ && $0 !~ /^#/) {print $0}}'  DEVICE=eth0  TYPE=Ethernet  ONBOOT=yes  BOOTPROTO=none  BRIDGE=br0  IPV6INIT=no  HWADDR=F8:BC:12:60:99:86    [root@localhost network-scripts]# cat ifcfg-br0 |awk '{if($0 !~ /^$/ && $0 !~ /^#/) {print $0}}'  DEVICE=br0  TYPE=Bridge  ONBOOT=yes  BOOTPROTO=static  IPADDR=192.168.10.103  GATEWAY=192.168.10.1  NETMASK=255.255.255.0  DNS1=192.168.10.1  IPV6INIT=no  DELAY=0

重啟網路，發現報以下錯誤：

[root@localhost network-scripts]# /etc/init.d/network start 
彈出環回介面：                                             [確定] 
彈出介面 eth0： 錯誤：啟用串連失敗：Master connection not found or invalid 
                                                           [失敗] 
彈出介面 br0： 錯誤：啟用串連失敗：Failed to determine connection's virtual interface name 
                                                           [失敗] 
RTNETLINK answers: File exists 
RTNETLINK answers: File exists 
RTNETLINK answers: File exists 
解決辦法：

[root@localhost rules.d]# service NetworkManager stop  //這個關閉掉就行 
停止 NetworkManager 守護進程：                             [確定] 
 
[root@localhost rules.d]# service network restart 
正在關閉介面 br0：                                         [確定] 
正在關閉介面 eth0：                                        [確定] 
關閉環回介面：                                             [確定] 
彈出環回介面：                                             [確定] 
彈出介面 eth0：                                            [確定] 
彈出介面 br0： Determining if ip address 192.168.10.103 is already in use for device br0... 
                                                           [確定] 
如果以下內容就說明配置成功了：

[root@localhost network-scripts]# ifconfig 
br0       Link encap:Ethernet  HWaddr F8:BC:12:60:99:86  //有這個就OK 
          inet addr:192.168.10.103  Bcast:192.168.10.255  Mask:255.255.255.0 
          inet6 addr: fe80::fabc:12ff:fe60:9986/64 Scope:Link 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
          RX packets:36416 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:28648 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:0 
          RX bytes:13151508 (12.5 MiB)  TX bytes:5962449 (5.6 MiB) 
 
eth0      Link encap:Ethernet  HWaddr F8:BC:12:60:99:86 
          inet6 addr: fe80::fabc:12ff:fe60:9986/64 Scope:Link 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
          RX packets:1360857 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:902173 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:1000 
          RX bytes:1913592871 (1.7 GiB)  TX bytes:72387220 (69.0 MiB) 
 
lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0 
          inet6 addr: ::1/128 Scope:Host 
          UP LOOPBACK RUNNING  MTU:16436  Metric:1 
          RX packets:176842 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:176842 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:0 
          RX bytes:880282316 (839.5 MiB)  TX bytes:880282316 (839.5 MiB) 
 
virbr0    Link encap:Ethernet  HWaddr 52:54:00:1A:B6:F1 
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0 
          TX packets:37 errors:0 dropped:0 overruns:0 carrier:0 
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:4651 (4.5 KiB) 
 
[root@localhost network-scripts]#  brctl show 
bridge name    bridge id        STP enabled    interfaces 
br0           8000.f8bc12609986    no        eth0     //有這個就OK 
virbr0        8000.5254001ab6f1    yes        virbr0-nic 
六，用virt-install產生.img檔案

代碼如下	複製代碼
# virt-install --name=ubuntu1 ＼  --ram 1024 --vcpus=1 ＼  --disk path=/root/ubuntu1.img,size=10 ＼   --accelerate --cdrom /root/ubuntu-14.04-desktop-amd64.iso ＼  --graphics vnc,port=5920 --network bridge=br0

如果報以下錯誤：
could not open disk image  : Permission denied 

解決方案：

[root@localhost ~]# cat /etc/libvirt/qemu.conf |awk '{if($0 !~ /^$/ && $0 !~ /^#/) {print $0}}' 
vnc_listen = "0.0.0.0" 
user = "root"               //去掉注釋 
group = "root"              //去掉注釋 
dynamic_ownership = 0       //去掉注釋，把1改為0 
這一步做完，系統檔案就好了。
七，啟動虛擬機器
如果報以下錯誤
[root@localhost ~]# virsh start ubuntu1 
錯誤：域已經活躍 

解決辦法：

[root@localhost ~]# pkill qemu-kvm 
 
[root@localhost ~]# virsh start ubuntu1 
域 ubuntu1 已開始 
 
[root@localhost ~]# virt-viewer ubuntu1   //進入圖形介面