Glance image sharing across different regions

Problem

If you want to share an image with other regions.

Environment

• Platform9 Managed OpenStack - v4.0 and Higher

Two regions with a different set of glance nodes.

Procedure

1. Save the image on the host from First region.

Save source image

$ openstack image save <image-id> --file <output-location>

  2.  Copy the image(s) using `SCP` to the /tmp directory of the target region's glance hosts. 

  3. There are three ways to add an image file to the Glance image repository in Platform9 Managed OpenStack:

• Copy an image file into the repository directory_._ The supporting pf9-imagelibrary service will detect the new file, calculate Glance metadata for it, and add it to Glance.

• Upload an image using the Glance command line client (or through some other REST client).

• Create an image as a snapshot of a virtual machine disk or Cinder volume.

1. Here, we will see "Copy an image file into the repository directory" method. Please copy/move the images from "/tmp"to the watch folder by default it is "/var/opt/pf9/imagelibrary/data" which can changed by administrator as needed, and they will be automatically imported into your Glance Image Catalog.

Note related to Image Permissions: Your image files must have the right permissions - world-readable or readable to pf9 user and pf9group group. You can use the following command on the image file:

chown pf9:pf9group <image-file-name>

With above method you will start observing the image in another region.