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rightscale_volume (16) Versions 1.2.1

Provides a resource to manage volumes on any cloud RightScale supports.

Berkshelf/Librarian
Policyfile
Knife
cookbook 'rightscale_volume', '= 1.2.1'
cookbook 'rightscale_volume', '= 1.2.1', :supermarket
knife cookbook site install rightscale_volume
knife cookbook site download rightscale_volume
README
Dependencies
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rightscale_volume cookbook

Cookbook Release Build Status

Description

This cookbook provides a rightscale_volume resource that can create, attach and manage a single block level storage "volume" on numerous public and private IaaS clouds.

A volume provides a highly reliable, efficient storage solution that can be mounted to a cloud server (within the same datacenter / zone) and persists independently from the life of the instance.

By using the RightScale API, this resource gives your recipes cloud portability without the need to store your cloud credentials on each server.

Github Repository: https://github.com/rightscale-cookbooks/rightscale_volume

Requirements

  • The system being configured must be a RightScale managed VM to have the required access to the RightScale API.
  • Chef 11 or higher.
  • Also requires a RightScale account that is registered with all the cloud vendors you expect to provision on (e.g. AWS, Rackspace, Openstack, CloudStack, GCE, and Azure).

Usage

The resource only handles manipulating the volume. Additional resources need to be created in the recipe to manage the attached volume as a filesystem or logical volume.

The following example will create a 10 GB volume, attach it to the instance, formats the device as ext4 and mounts it to '/mnt/storage'.

# Creates a 10 GB volume
rightscale_volume "db_data_volume" do
  size 10
  action :create
end

# Attaches the volume to the instance
rightscale_volume "db_data_volume" do
  action :attach
end

execute "format volume as ext4" do
  command lazy { "mkfs.ext4 #{node['rightscale_volume']['db_data_volume']['device']}" }
  action :run
end

execute "mount volume to /mnt/storage" do
  command lazy { "mkdir -p /mnt/storage; mount #{node['rightscale_volume']['db_data_volume']['device']} /mnt/storage" }
  action :run
end

The following example will create a new volume from a snapshot.

rightscale_volume "db_data_volume_from_snapshot" do
  size 10
  snapshot_id "my-snaphot-id"
  action [ :create, :attach ]
end

The size may or may not be honored depending on hypervisor used by the cloud vendor. If the cloud does not support resize when creating a volume from a snapshot, then the size will be the same as the volume from which the snapshot was taken. If resize is supported, additional resources will be required to resize the filesystem on the volume.

Recipes

default

The default recipe installs the right_api_client RubyGem, which this cookbook requires in order to work with the RightScale API.

Resource/Providers

rightscale_volume

A resource to create, attach, and manage a single "volume" on public and private IaaS clouds.

Actions

Name Description Default
:create Creates a new volume in the cloud yes
:attach Attaches a volume to a RightScale server
:snapshot Takes a snapshot of a volume
:detach Detaches a volume from a RightScale server
:delete Deletes a volume from the cloud
:cleanup Cleans up old snapshots of a volume

Attributes

Name Description Default Required
nickname Name of the volume to be created No
size Volume size in gigabytes 1 No
description Description for the volume No
snapshot_id Snapshot ID to create the volume from No
options Optional parameters hash for volume creation. For example, :volume_type on Rackspace Open Clouds and :iops on AWS clouds {} No
timeout Throws an error if an action could not be completed within this timeout (in minutes) 15 No
max_snapshots The number of snapshots of a volume to retain when running the :cleanup action 60 No

Cloud Specific Notes

AWS EC2

  • For this resource to work on a EC2 cloud, the RightScale account must be on a UCP cluster.
  • This cloud supports creating volumes with provisioned IOPS. To create a volume with IOPS on EC2 pass the :iops option to the options hash as shown below
rightscale_volume "volume_with_iops" do
  size 10
  options {:iops => 100}
  action :create
end

Rackspace Open Cloud

  • The minimum volume size offered by this cloud is 100 GB. The :create volume action throws an error if the requested volume size is lesser than the minimum size offered.
  • This cloud supports two types of volume - SATA and SSD. The type of volume to be created can be passed to the options parameter as below (defaults to SATA if none specified)
rightscale_volume "open_cloud_volume" do
  size 100
  options {:volume_type => 'SSD'}
  action :create
end
  • A volume cannot be deleted from this cloud if at least one snapshot created from this volume exists. To delete such a volume, all dependent snapshots must be cleaned up first. The :delete action does not delete such a volume and throws a warning message in the logs.

CloudStack Clouds

  • CloudStack has the concept of a "custom" disk offering. If a "custom volume type" is supported in the cloud, then the :create action creates a volume with the requested size. If "custom volume type" is not supported then this action will use the "closest volume type" with size greater than or equal to the requested size. If there are multiple custom volume types or multiple volume types with the closest size, the one with the greatest resource UID will be used.

Author

Author:: RightScale, Inc. (cookbooks@rightscale.com)

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