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Replace template disk(s) with new disk(s), so future VMs use the new disk(s). To replace a disk, you can use the UI or API. See Manage VM templates and Appliance manager template API upload and download
Delete a template, which requires that no deployed VMs are using the template and it has no instances. Note that you can promote instances to master main templates and then delete the instances
Make a template unavailable to users, when it is in use
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Screenshot: Deploy an instance of the Core in a new VM. There are now two VMs - one with the core template and one with an instance of the core template VM Screenshot: The core template has two instances: Core_Instance_1 and Core_Instance_1_Instance_1  Now the administrator would like to delete the template, but there are VMs and instances. So the administrator will make the template unavailable. The platform will delete the disk files and users cannot create new VMs from the template. Screenshot: The administrator clicks the template edit menu and selects Delete   Screenshot: The platform displays the details of deployed VMs and instances on the "Virtual machine template in use" popup. The administrator clicks Yes to continue. The template disk files and the disk conversions will be deleted from the Catalogue. You cannot recover them within the platform  Screenshot: To view the unavailable template, click the template filter and select the Deleted checkbox. Click on the unavailable template to view the instances and they will display in the Instances panel below the master main templates. |
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Manage instance templates in datacenters
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In a datacenter, the platform stores an instance with the original master main template. This means that you cannot delete a master main template if it has instances. However, you can promote an instance to a master main template.
The platform identifies master main templates with the "M" symbol on the template icon and instances with the "S" symbol on the template icon.
To display the instances under a master main template:
Click on the master main template and the Instances panel will open with the instance templates.
You can modify the instance template, to change the CPU, RAM, icon, and so on, and these changes will not affect the master main template.
Promote an instance to a
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main template
When you promote an instance, Abiquo first makes a copy of the instance and then promotes it to create a new master main template. This is useful when you want to delete a master main template but keep its instance template(s).
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To promote an instance:
Select the original master main template to display its instances
Select the instance, and from its options menu, select Promote to master
Enter a Name for the new master main template. Select the disks to promote
Remember that there must always be at least one disk and that the disk at position 0 must be a boot disk.
The name should help users to identify this template among the other templates
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From the instance template's options menu, select Promote to mastermain  Enter a Name to identify the template  The platform displays the promoted instance in the main section of the Catalogue  |
Manage instances of deleted templates
You cannot delete a master main template if it has VMs deployed or instances with VMs deployed, but you can make it unavailable, which deletes the template disk file. If a master main template is unavailable, to display it and access the instances panel, select the checkbox to display Deleted VM templates. If you wish to create a VM from an instance of a deleted master main template, first promote the instance to a master main template.
Make an instance template unavailable
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Confirm that you would like to delete the instance template  To display the unavailable instance:
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You cannot force the delete of an instance if it is in use in a VM.
If you try to delete an unavailable instance, an error popup will appear because the template is already unavailable.
To make the instance available again, replace the unavailable template files on the file system. When it detects the template files, the platform will mark the instance as available.
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In a public cloud region, the instance template is independent of the original master main template. The platform saves the VM configuration as part of the custom template. To ensure that you can identify relationships between templates, name your instances carefully.
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