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| `clonedomain.sh` | `domain_clone.sh` |
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| ./clonedomain.sh clone | ./domain_clone.sh clone |
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== Update == Since the template can be quite old, you might as well update it. {{{ apt-get update apt-get upgrade }}} |
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.
Cloning
Use the script below to clone your template.
domain_clone.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.
./domain_clone.sh clone
Cleanup
Hostname
Your new system will need a new hostname
- /etc/hostname
- /etc/hosts
sed -i 's/stretch-template/clone/g' /etc/hosts sed -i 's/stretch-template/clone/g' /etc/hostname
sshd
Make sure the ssh keys are unique.
rm /etc/ssh/ssh_host_* dpkg-reconfigure openssh-server
Root password
Reset your root passwd.
passwd
Update
Since the template can be quite old, you might as well update it.
apt-get update apt-get upgrade