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A standard set of flavors allows predictable distribution of applications across multiple hypervisors.

Images

OpenStack images provide the source for booting a virtual machine. An image consists of an operating system, some optional additional packages and some flags to help OpenStack place these on the right hypervisor.

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IMPORTANT NOTE: It is not admitted building Windows virtual machine on ADA cloud, even if the user has its own windows licence.

How to: Operations with an instance

Create an instance snapshot

1. Log in to the virtual machine and shutdown the instance
2. Log in to the dashboard, choose the right project, and click Instances.
3. Check that the instace to snapshot is Shutoff
4. Select such instance
5. In the Actions column, click Create Snapshot.
6. In the Create Snapshot dialog box, enter a name for the snapshot, and click Create Snapshot.The Images category shows the instance snapshot.

To launch an instance from the snapshot, select the snapshot and click Launch. Proceed with launching an instance.

Manage an instance

1. Log in to the virtual machine and shutdown the instance

2. Log in to the dashboard, choose the right project, and click Instances.

3. Select an instance.

4. In the More list in the Actions column, select the state.

   You can resize or rebuild an instance. You can also choose to view the instance console log, edit instance or the security groups. Depending on the current state of the instance, you can pause, resume, suspend, soft or hard reboot, or terminate it.

Track usage for instances

You can track usage for instances for each project. You can track costs per month by showing metrics like number of vCPUs, disks, RAM, and uptime for all your instances.

1. Log in to the dashboard, choose a project, and click Overview.

2. To query the instance usage for a month, select a month and click Submit.

3. To download a summary, click Download CSV Summary.

How to: Cinder Volumes

Cinder Volumes

Volumes are block storage devices that you attach to instances to enable persistent storage.

After the creation, you must attach the volume to a running instance and then mount it from inside the virtual machine.

A volume can be also detached from an instance, and attached to another instance at any time.

It is also possible to create a snapshot from a volume and/ or delete it.

Operations with Cinder Volumes

1. Creation of a Cinder Volume

   a) Log in to the dashboard, choose a project, and click on "Projects → Volumes → Volumes".

   b) Click on "Create Volume" button:

   In the dialog box that opens, enter or select the following values.

   Volume Name: Specify a name for the volume.

   1. Description: Optionally, provide a brief description for the volume.

      Volume Source: Select one of the following options:

      • No source, empty volume: Creates an empty volume. An empty volume does not contain a file system or a partition table.
      • Image: If you choose this option, a new field for Use image as a source displays. You can select the image from the list.

      Type:

   • • __DEFAULT __ is a general cinder volume

     • LUKS is for encrypted volumes. Ask to superc@cineca.it to be enabled to use this.

     Size (GiB): The size of the volume in gibibytes (GiB).

   • Finally, click on Create Volume button.
     

   The dashboard shows the volume on the Volumes tab.

Detach a volume from an instance

Delete a volume

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