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Size: 1526
Comment:
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Size: 1347
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 41: | Line 41: |
| Before starting Find the blocksize and the partition layout for the guest |
=== Hostname === * /etc/hostname * /etc/hosts |
| Line 44: | Line 47: |
| fdisk -ul /dev/vg2/kvm_clone_vda | sed -i 's/stretch-template/clone/g' /etc/hosts sed -i 's/stretch-template/clone/g' /etc/hostname |
| Line 47: | Line 51: |
| Calculate the partition offset. Offset = sector * blocksize. In this case 512 * 499712 = 255852544. mount the partition. {{{ mount -o loop,offset=255852544 /dev/vg2/kvm_clone_vda /mnt/misc }}} change the hostname delete ssh keys |
=== sshd === |
Domain Cloning
Once a template system has been installed, that system can be cloned. virt-clone will automatically change the MAC address of your network device. Use the script below to clone your template.
clonedomain.sh
1 #!/bin/sh
2
3 LVM_GROUP="vg2"
4 NAME_ORIGINAL="stretch-template"
5 LVM_NAME_ORIGINAL="kvm_${NAME_ORIGINAL}_vda"
6 LVM_SIZE_ORIGINAL=`lvs /dev/${LVM_GROUP}/${LVM_NAME_ORIGINAL} -o LV_SIZE --noheadings --units B --nosuffix`
7 NAME_CLONE="stretch-clone"
8 LVM_NAME_CLONE="kvm_${NAME_CLONE}_vda"
9
10 if [ $# -gt 0 ]
11 then
12 NAME_CLONE=${1}
13 LVM_NAME_CLONE="kvm_${NAME_CLONE}_vda"
14 fi
15
16 if [ ! -e /dev/${LVM_GROUP}/${LVM_NAME_CLONE} ]
17 then
18 # create lvm partition
19 lvcreate --size ${LVM_SIZE_ORIGINAL}B --name ${LVM_NAME_CLONE} ${LVM_GROUP}
20
21 # clone the domain
22 virt-clone --original ${NAME_ORIGINAL} --name ${NAME_CLONE} --file /dev/${LVM_GROUP}/${LVM_NAME_CLONE} --check path_in_use=off,path_exists=off
23 else
24 echo "${0}: refusing to overwrite existing domain"
25 fi
Make a clone.
./clonedomain.sh clone
Cleaning up Your New Guest
Hostname
- /etc/hostname
- /etc/hosts
sed -i 's/stretch-template/clone/g' /etc/hosts sed -i 's/stretch-template/clone/g' /etc/hostname