VMware ESXI 迁移至KVM

1.1.1 ESXI将虚拟机导出

导出ova模板

将导出的ova模板导入到KVM环境中。

1.1.2 配置KVM环境

安装所需要的组件

[root@clsn7 ~]# yum install libvirt* virt-* qemu-kvm* -y

配置桥接网卡

[root@clsn7 ~]# virsh iface-bridge eth1 br1 

使用附加设备 br1 生成桥接 eth1 失败

已启动桥接接口 br1

1.1.3 导入虚拟机

启动kvm管理程序，并设置开机自启动

[root@clsn7 ~]# systemctl start libvirtd.service

[root@clsn7 ~]# systemctl enable libvirtd.service

创建虚拟机存放目录

[root@clsn7 ~]# virt-v2v -i ova centos-dev-test01-v2v.ova -o local -os /vmhost/dev/dev-test01  -of qcow2 

[   0.0] Opening the source -i ova centos-dev-test01-v2v.ova

virt-v2v: warning: making OVA directory public readable to work around 

libvirt bug https://bugzilla.redhat.com/1045069

[  23.1] Creating an overlay to protect the source from being modified

[  23.4] Initializing the target -o local -os /vmhost/dev/dev-test01

[  23.4] Opening the overlay

[  41.4] Inspecting the overlay

[  57.5] Checking for sufficient free disk space in the guest

[  57.5] Estimating space required on target for each disk

[  57.5] Converting CentOS release 6.9 (Final) to run on KVM

virt-v2v: This guest has virtio drivers installed.

[ 178.6] Mapping filesystem data to avoid copying unused and blank areas

[ 178.9] Closing the overlay

[ 179.4] Checking if the guest needs BIOS or UEFI to boot

[ 179.4] Assigning disks to buses

[ 179.4] Copying disk 1/1 to /vmhost/dev/dev-test01/centos-dev-test01-v2v-sda (qcow2)

    (100.00/100%)

[ 216.1] Creating output metadata

[ 216.1] Finishing off

导入完成后在 /vmhost/dev/dev-test01 目录下会生成文件

[root@clsn7 dev-test01]# pwd

/vmhost/dev/dev-test01

[root@clsn7 dev-test01]# ls

centos-dev-test01-v2v-sda  centos-dev-test01-v2v.xml

修改网卡配置

修改网卡source network 为桥接

修改网卡使用virtio

[root@clsn7 dev-test01]# cat centos-dev-test01-v2v.xml 

<?xml version='1.0' encoding='utf-8'?>

<domain type='kvm'>

  <!-- generated by virt-v2v 1.36.3rhel=7,release=6.el7_4.3,libvirt -->

  <name>centos-dev-test01-v2v</name>

  <memory unit='KiB'>524288</memory>

  <currentMemory unit='KiB'>524288</currentMemory>

  <vcpu>1</vcpu>

  <features>

    <acpi/>

    <apic/>

  </features>

  <os>

    <type arch='x86_64'>hvm</type>

  </os>

  <on_poweroff>destroy</on_poweroff>

  <on_reboot>restart</on_reboot>

  <on_crash>restart</on_crash>

  <devices>

    <disk type='file' device='disk'>

      <driver name='qemu' type='qcow2' cache='none'/>

      <source file='/vmhost/dev/dev-test01/centos-dev-test01-v2v-sda'/>

      <target dev='vda' bus='virtio'/>

    </disk>

    <disk device='cdrom' type='file'>

      <driver name='qemu' type='raw'/>

      <target dev='hda' bus='ide'/>

    </disk>

    <disk device='floppy' type='file'>

      <driver name='qemu' type='raw'/>

      <target dev='fda'/>

    </disk>

    <interface type='bridge'>

      <source bridge='br1'/>

      <model type='virtio'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>

    </interface>

    <video>

      <model type='qxl' ram='65536' heads='1'/>

    </video>

    <graphics type='vnc' autoport='yes' port='-1'/>

    <input type='tablet' bus='usb'/>

    <input type='mouse' bus='ps2'/>

    <console type='pty'/>

  </devices>

</domain>

1.1.4 启动虚拟机

导入主机

[root@clsn7 dev-test01]# virsh  define centos-dev-test01-v2v.xml  

定义域 centos-dev-test01-v2v（从 centos-dev-test01-v2v.xml）

查看主机列表

[root@clsn7 dev-test01]#  virsh list --all 

 Id    名称                         状态

----------------------------------------------------

 -     centos-dev-test01-v2v          关闭

启动主机

[root@clsn7 dev-test01]#  virsh start centos-dev-test01-v2v 

域 centos-dev-test01-v2v 已开始

1.1.5 测试可用性

登陆迁移后的虚拟机测试

[root@clsn7 ~]# ssh root@192.168.19.123

The authenticity of host '192.168.19.123 (192.168.19.123)' can't be established.

RSA key fingerprint is SHA256:iRmghFzgRIJy5+v8p4lqi8DyUG8F0hXR/qNdDZ2J6RY.

RSA key fingerprint is MD5:37:b8:56:3b:b7:85:fa:cb:d9:55:a7:44:d5:de:f8:d9.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.19.123' (RSA) to the list of known hosts.

root@192.168.19.123's password: 

Last login: Mon Mar  5 10:30:02 2018 from 192.168.19.9

[root@dev-test01 ~]# hostname  -I

192.168.19.123

设置虚拟机开机自启动。

[root@clsn7 ~]# virsh autostart centos-dev-test01-v2v 

域 centos-dev-test01-v2v标记为自动开始

至此第一台机器的迁移完成，后续按照相同的方式将其他的虚拟机进行迁移即可。

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