• Redhat6.x下如何制作虚拟机快照和镜像封装


    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 57.80g

    2、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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  • 原文地址:https://www.cnblogs.com/xautlmx/p/3997409.html
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