1.静态迁移就是虚拟机在关机状态下,拷贝虚拟机虚拟磁盘文件与配置文件到目标虚拟主机中,实现的迁移。分为以下情况:
(1)虚拟主机各自使用本地存储存放虚拟机磁盘文件(本文实现基于本地磁盘存储虚拟机磁盘文件的迁移方式)
(2)虚拟主机之间使用共享存储存放虚拟机磁盘文件(该方式只是在目标虚拟主机上重新定义虚拟机就可以了)
2,静态迁移的过程如下:
(1)确定虚拟机处于关闭状态,本文以hadoop3为例:
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[root@KVM
install
]
# virsh list --all
Id Name State
----------------------------------------------------
1 win7 running
18 hadoop4 running
20 hadoop2 running
21 hadoop1 running
- hadoop3 shut off
[root@KVM
install
]
#
|
(2)准备迁移虚拟机,查看虚拟机的磁盘配置文件
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[root@KVM
install
]
# virsh domblklist hadoop3
Target Source
------------------------------------------------
hda
/images/test/hadoop3
.qcow2
hdb
/images/test/hadoop3_add
.qcow2
hdc -
[root@KVM
install
]
#
|
(3)导入虚拟机的配置文件
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[root@KVM
install
]
# virsh dumpxml hadoop3 > /tmp/hadoop3.xml
[root@KVM
install
]
# ll /tmp/hadoop3*
-rw-r--r-- 1 root root 3016 Feb 6 12:43
/tmp/hadoop3
.xml
[root@KVM
install
]
#
|
(4)拷贝配置文件到目标主机上
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[root@KVM
install
]
# scp /tmp/hadoop3.xml root@10.1.156.211:/etc/libvirt/qemu
The authenticity of host
'10.1.156.211 (10.1.156.211)'
can't be established.
RSA key fingerprint is 20:8e:24:a6:ef:b3:d6:71:72:bb:39:e7:88:f9:38:
cd
.
Are you sure you want to
continue
connecting (
yes
/no
)?
yes
Warning: Permanently added
'10.1.156.211'
(RSA) to the list of known hosts.
root@10.1.156.211's password:
[root@KVM
install
]
#
|
(5)拷贝虚拟机的磁盘文件到目标主机上
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[root@KVM
install
]
# scp /tmp/hadoop3.xml root@10.1.156.211:/etc/libvirt/qemu
The authenticity of host
'10.1.156.211 (10.1.156.211)'
can't be established.
RSA key fingerprint is 20:8e:24:a6:ef:b3:d6:71:72:bb:39:e7:88:f9:38:
cd
.
Are you sure you want to
continue
connecting (
yes
/no
)?
yes
Warning: Permanently added
'10.1.156.211'
(RSA) to the list of known hosts.
root@10.1.156.211's password:
[root@KVM
install
]
# virsh domblklist hadoop3
Target Source
------------------------------------------------
hda
/images/test/hadoop3
.qcow2
hdb
/images/test/hadoop3_add
.qcow2
hdc -
[root@KVM
install
]
# scp /images/test/hadoop3.qcow2 /images/test/hadoop3_add.qcow2 root@10.1.156.211:/data/test/
root@10.1.156.211's password:
[root@KVM
install
]
#
|
3,在目标主机上做如下操作:
(1)查看目标虚拟主机的环境
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[root@KVM
test
]
# virsh list --all
Id Name State
----------------------------------------------------
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(2)修改目标主机的配置文件。
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[root@KVM
test
]
#vi /etc/libvirt/qemu/hadoop3.xml
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(3)定义注册虚拟主机
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[root@KVM
test
]
# virsh define /etc/libvirt/qemu/hadoop3.xml
Domain hadoop3 defined from
/etc/libvirt/qemu/hadoop3
.xml
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(4)启动并确认虚拟机
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[root@KVM
test
]
# virsh list --all
Id Name State
----------------------------------------------------
- hadoop3 shut off
[root@KVM
test
]
# virsh start hadoop3
Domain hadoop3 started
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至此,虚拟机的静态迁移成功
本文转自 lqbyz 51CTO博客,原文链接:http://blog.51cto.com/liqingbiao/1741316