Differences between revisions 10 and 33 (spanning 23 versions)

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

Console Access

Remove console access by editing the domain.

Memory

Increase or decrease amount of memory by editing the domain.

Network

For your convenience add the MAC address to the DHCP servers lits of fixed IP-adresses before starting the system for the first time. This way you know beforehand which IP-address to connect to.

Guest OS

Continue by configuring the KVM Guest Operating System.

-  ⇤ ← Revision 10 as of 2017-11-11 20:36:31 → 
  Size: 1508
  Editor: shran
  Comment:
+   ← Revision 33 as of 2017-12-13 14:06:14 → ⇥
  Size: 1652
  Editor: Kristian Kallenberg
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 2:
+Once a template system has been installed, that system can be cloned. `virt-clone` will automatically change the MAC address of your network device.
-Line 3:
+Line 4:
-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.
+== Cloning ==
Use the script below to clone your template.
-Line 5:
+Line 7:
-`clonedomain.sh`
+`domain_clone.sh`
-Line 34:
+Line 36:
-Make a clone
+Make a clone.
-Line 36:
+Line 38:
-./clonedomain.sh clone
+./domain_clone.sh clone
-Line 39:
+Line 41:
-== Cleaning up Your New Guest ==
+== Console Access ==
Remove console access by [[Domain Editing|editing the domain]].
-Line 41:
+Line 44:
-Find the blocksize and the partition layout for the guest
{{{
fdisk -ul /dev/vg2/kvm_clone_vda
}}}
+== Memory ==
Increase or decrease amount of memory by [[Domain Editing|editing the domain]].
-Line 46:
+Line 47:
-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
}}}
+== Network ==
For your convenience add the MAC address to the DHCP servers lits of fixed IP-adresses before starting the system for the first time. This way you know beforehand which IP-address to connect to.
-Line 51:
+Line 50:
-change the hostname
delete ssh keys
+== Guest OS ==
Continue by configuring the [[KVM Guest Operating System|KVM Guest Operating System]].