Registering a remotely stored image

OpenStack Image Service provides a mechanism to remotely add an image that is stored at an externally accessible location. This allows for a convenient method of adding images we might want to on our private cloud that have been uploaded to an external third-party server.

Getting ready

To begin with, ensure you are logged in to our Ubuntu client where we can run the glance tool. This can be installed using the following command:

sudo apt-get update
sudo apt-get install python-glanceclient

Ensure that you have your environment variable set up correctly with our admin user and password, as created in the previous chapter:

export OS_TENANT_NAME=cookbook
export OS_USERNAME=admin
export OS_PASSWORD=openstack
export OS_AUTH_URL=https://192.168.100.200:5000/v2.0/
export OS_NO_CACHE=1
export OS_KEY=/vagrant/cakey.pem
export OS_CACERT=/vagrant/ca.pem

How to do it...

Carry out the following steps to remotely store an image in our OpenStack Image Service:

  1. To register a remote virtual image into our environment, we add a location parameter instead of streaming the image through a pipe on our glance command line: 
    glance image-create \
 --name='Ubuntu 12.04 x86_64 Server' \
 --disk-format=qcow2 \
 --container-format=bare \
 --public \
 --location http://webserver/precise-server-cloudimg-amd64-disk1.img
  2. The preceding step returns information similar to what you can see here, which is then stored in our OpenStack Image Service:
    How to do it...

How it works...

Using the glance tool to specify remote images directly provides a quick and convenient way to add images to our OpenStack Image Service repository. The way this happens is with the location parameter. We add in our usual meta information to accompany this, as we would with a locally-specified image.

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