一、虚拟机快照
1、确认你的物理机上的vg还有足够的剩余空间
[root@hacker ~]# vgs
VG #PV #LV #SN Attr VSize VFree vg_hacker 1 6 4 wz--n- 95.80g 57.80g2、建立一个至少4G(此处以8G为例)的lv逻辑卷，将虚拟机装在此逻辑卷中
[root@hacker ~]# lvcreate -L 8G -n vserver vg_hacker
[root@hacker ~]# ll /dev/vg_hacker/vserver 
3、对虚拟机进行封装
[root@server93 ~]# vim /etc/yum.repos.d/rhel-source.repo [rhel-source] name=Red Hat Enterprise Linux $releasever - $basearch - Source baseurl=ftp://192.168.122.1/pub/yum enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release [HighAvailability] name=Instructor Server Repository baseurl=ftp://192.168.122.1/pub/yum/HighAvailability gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release enabled=1 [LoadBalancer] name=Instructor Server Repository baseurl=ftp://192.168.122.1/pub/yum/LoadBalancer gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release enabled=1 [ResilientStorage] name=Instructor Server Repository baseurl=ftp://192.168.122.1/pub/yum/ResilientStorage gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release enabled=1 [ScalableFileSystem] name=Instructor Server Repository baseurl=ftp://192.168.122.1/pub/yum/ScalableFileSystem gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release enabled=1 [extra] name=localextra baseurl=ftp://192.168.122.1/pub/extra gpgcheck=0 enabled=1
[root@server93 ~]# yum install lftp vim openssh-clients -y
[root@server93 ~]# vim /etc/udev/rules.d/70-persistent-net.rules # This file was automatically generated by the /lib/udev/write_net_rules # program, run by the persistent-net-generator.rules rules file. # # You can modify it, as long as you keep each rule on a single # line, and change only the value of the NAME= key. # PCI device 0x10ec:0x8139 (8139cp) # PCI device 0x10ec:0x8139 (8139cp) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:31:46:e8", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" （将次行删除，保存退出）
[root@server93 ～]# /etc/init.d/iptables stop [root@server93 ～]# chkconfig iptables off
[root@server93 ~]# vim /etc/sysconfig/selinux # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted
[root@server93 ~]# rm -rf /etc/ssh/ssh_host_*
[root@server93 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0 ONBOOT=yes BOOTPROTO=dhcp
[root@server93 ~]# halt 封装完成，关闭虚拟机
4、建立快照，并删除虚拟机原本的磁盘，将此快照添加到虚拟机中，每台虚拟机对应一个快照
[root@hacker ~]# lvcreate -L 5G -n vserver1-snap /dev/vg_hacker/vserver -s
5、其他虚拟机直接在原本的逻辑卷上依次建立快照即可，无需多次重复安装虚拟机！
[root@hacker ~]# lvcreate -L 5G -n vserver2-snap /dev/vg_hacker/vserver -s
二、镜像封装
当你系统vg没有剩余空间的时，可以使用另一种快捷的办法来快速安装多台虚拟机
1、无需建议逻辑卷，只需按正常流程安装好一台虚拟机
2、按照制作虚拟机快照的步骤3对虚拟机进行封装
3、进入虚拟机默认存放路径，找到你刚安装的虚拟机对应的img文件（此处为iso.img），然后执行以下命令
[root@hacker ~]# cd /var/lib/libvirt/images/ [root@hacker images]# ls iso.img
[root@hacker images]# qemu-img create -f qcow2 -o backing_file=iso.img iso.voll1
4.将生成的iso.voll1文件添加到虚拟机中即可，需要多台虚拟机时以此类推
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