ManageIQ - Attach disk to RHV VM using button

By Sachin
March 4, 2017

Post describes a way to attach additional disk to RHV VM using button.

ManageIQ logo

Just to get my hands dirty on ManageIQ’s Automate model, I started working on a way to attach additional disk to VM running on Red Hat Virtualization. Although it can be easily done by “Reconfigure this VM”, I wanted a way to do this via Automate. I did found two ways to do this, one described in Mastering Automation in CloudForms & ManageIQ and other here. Both uses ReST APIs to achieve the task but then I came across this Pull Request which made the job quite easy.

Datastore

I have created a domain – AutomateMIQ which has a custom method – add_disk. It is called by instance hot_add_disk. add_disk has everything you need to attach new disk to VM including notifications and email.

Automate datastore
Automate datastore

Now datastores can be managed by git as seen below. Enter git repository URL with valid credentials and click submit button.

Use Automate git to manage datastore
Use Automate git to manage datastore

Service dialog

One also needs to create a service dialog which prompts for disk size and disk provisioning type. These fields are then imported by add_disk. The disk is then attached based on user defined parameters. I have imported Add disk service dialog in form of yaml for reference.

Service dialog prompts for disk size and provisioning type
Service dialog prompts for disk size and provisioning type

Button

Finally we need a button to call instance hot_add_disk. A button calls request type “AddDisk” from /System/Process/ as seen below. Please find button in form of yaml here.

Create button to add disk
Create button to add disk

A button will be visible under ‘Actions’ dropdown on VM’s summary page as below.

Add disk button on VM's summary page
Add disk button on VM's summary page

Notifications

Once the disk is attached, user will be notified.

Notification
Notification

Finally, an additional disk will be attached to VM.

Newly attached disk
Newly attached disk

Note that the feature work on euwe release of ManageIQ. If not already done, please upgrade ManageIQ version following below steps.

# SSH to ManageIQ
vmdb
git fetch --all
git checkout euwe-2
git checkout -b euwe-2
bundle install
# or bin/install
bundle exec rake evm:compile_assets
bundle exec rake evm:restart