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How to create a Disk image in OpenNebula?
  • CloudSim is a framework which contains libraries and does not have to be installed. We need to unpack the downloaded package on any directory, add it to the Java classpath and it is ready to be used.
Step 1:Start OpenNebula

i) Login as the oneadmin user in Terminal.

Type the following command.
<one start>


(ii) Start the OpenNebula SunStone.

Type the following command.

<service opennebula-sunstone start>



Step 2: Login OpenNebula Sunstone

Go to https://localhost:9869 .

Login into OpenNebula Sunstone.


Username-oneadmin.

Password-xxxxxxxxx and click on “Login” button.

OpenNebula Dashboard screen will be displayed.



Step 3: Create a Disk Image
  • In OpenNebula Dashboard, click the “Images” under the “Storage” Tab which is appeared in the Left side menu.
  • Click the “+” button to add a new image.
  • Set the Disk image parameters as per the following specifications: .

    Name = "image name"
    Type = Generic storage datablockTick
    "This image is persistent"
    Set Image Location to “Empty disk image”
    Size = "your required space in MB"
    Advanced Options
    BUS = Virtio
    Image Mapping driver=qcow2

  • Click “Create” button.
  • Now Disk image is created in OpenNebula..