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rightscale_backup (12) Versions 1.1.0

Provides a resource to manage volume backups on any cloud RightScale supports.

Berkshelf/Librarian
Policyfile
Knife
cookbook 'rightscale_backup', '= 1.1.0'
cookbook 'rightscale_backup', '= 1.1.0', :supermarket
knife cookbook site install rightscale_backup
knife cookbook site download rightscale_backup
README
Dependencies
Quality -%

rightscale_backup cookbook

Build Status

This cookbook provides a rightscale_backup resource that can create, restore, and clean up block device storage ("volume") backups on numerous public and private IaaS clouds.

A backup represents a collection of volume snapshots taken at the same time from one or more volumes attached to the server. A backup belongs to a series of backups, called the "lineage". Maintaining a lineage allows for point-in-time data recovery using timestamps (even if the snapshots are taken from different volumes). It also supports a more sophisticated algorithm for backup rotation/retention, as opposed to simple snapshot truncation.

The rightscale_backup resource uses RightScale's instance-facing API to manage backups in the cloud.

Requirements

  • The system being configured must be a RightScale managed VM to have the required access to the RightScale API.
  • Chef 11 or higher.
  • 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).

Recipes

default

The default recipe installs the right_api_client gem to make instance-facing RightScale API calls.

Resource/Providers

rightscale_backup

A resource to create, restore, and cleanup backups in the cloud.

Action: create

Creates a snapshot for every volume attached to the server. The newly created snapshot will be tagged with the following

<table> <tr> <th>Tag Name</th> <th>Description</th> </tr> <tr> <td><tt>rs_backup:lineage=<string></tt></td> <td>Lineage name of the backup</td> </tr> <tr> <td><tt>rs_backup:backup_id=<UUID></tt></td> <td>Unique identifier for a backup (all snapshots in a backup will share this ID)</td> </tr> <tr> <td><tt>rs_backup:committed=true</tt></td> <td>The backup is committed</td> </tr> <tr> <td><tt>rs_backup:count=X</tt></td> <td>Number of snapshots in the backup</td> </tr> <tr> <td><tt>rs_backup:device=<device></tt></td> <td>Device to which the volume was attached</td> </tr> <tr> <td><tt>rs_backup:position=Y</tt></td> <td>Position of the snapshot in a backup</td> </tr> <tr> <td><tt>rs_backup:timestamp=<timestamp></tt></td> <td>Time at which the backup was taken</td> </tr> </table>

A backup is considered a perfect backup when it is completed (all the snapshots are completed), committed (all the snapshots are committed), and the number of snapshots it found is equal to the number in the "rs_backup:count=" tag on each of the snapshots.

Attributes

<table> <tr> <th>Name</th> <th>Description</th> <th>Default</th> <th>Required</th> </tr> <tr> <td>nickname</td> <td>Name of the backup to be created. All snapshots in the backup will be created with this name.</td> <td></td> <td>Yes</td> </tr> <tr> <td>lineage</td> <td>Lineage in which the backup must belong</td> <td></td> <td>Yes</td> </tr> <tr> <td>description</td> <td>Description for the backup</td> <td></td> <td>No</td> </tr> <tr> <td>from_master</td> <td>Set this to 'true' to create a <tt>rs_backup:from_master=true</tt> true on the snapshots which can be used in filtering</td> <td><tt>false</tt></td> <td>No</td> </tr> <tr> <td>timeout</td> <td>Throws an error if the volume could not be backed up in the cloud within this timeout (in minutes)</td> <td><tt>15</tt></td> <td>No</td> </tr> </table>

Action: restore

Restores a backup from the cloud. This will

  • create a volume for each snapshot in the backup
  • attach all the created volumes to the server at the device specified in the snapshot (obtained from rs_backup:device=). NOTE: If the devices are already being used on the server, the restore will fail.

Attributes

<table> <tr> <th>Name</th> <th>Description</th> <th>Default</th> <th>Required</th> </tr> <tr> <td>nickname</td> <td>Name of the backup to be restored</td> <td></td> <td>Yes</td> </tr> <tr> <td>lineage</td> <td>Lineage in which the backup belongs</td> <td></td> <td>Yes</td> </tr> <tr> <td>description</td> <td>Description to be set for the volumes created from the snapshots in the backup. If description is not given, the description in the snapshots will be used for the newly created volumes.</td> <td></td> <td>No</td> </tr> <tr> <td>timestamp</td> <td>The timestamp on the backup. The latest <em>perfect backup</em> on or before this timestamp in the specified lineage will be picked for restore. This attribute can be set using the Time class or the seconds since UNIX epoch (Integer)</td> <td></td> <td>No</td> </tr> <tr> <td>size</td> <td>All volumes created from the snapshot will be of this size. NOTE: This size must be equal to or larger than the size of the snapshots in the backup. WARNING: Some clouds do not support volume resizing and throws an exception when we pass this parameter. On clouds that supports resizing (currently only tested in EC2), the volumes will be created with this size instead of the original backup's size.</td> <td></td> <td>No</td> </tr> <tr> <td>timeout</td> <td>Throws an error if the volume could not be restored within this timeout (in minutes)</td> <td><tt>15</tt></td> <td>No</td> </tr> <tr> <td>options</td> <td>Optional parameters hash. For example, <tt>:volume_type</tt> on Rackspace Open Clouds can be specified to restore the volume as an 'SATA' or 'SSD' device.</td> <td></td> <td>No</td> </tr> </table>

Action: cleanup

Deletes old backups from the cloud. For all the perfect backups, the constraints of keep_last, dailies, weeklies, monthlies, and yearlies attributes will be applied (See 'Parameters' section below). The algorithm for choosing the backups to keep is enforced by the RightScale API which is the union of those set of backups if each of those conditions are applied independently.

backups_to_keep = backups_to_keep(keep_last) U backups_to_keep(dailies) U
backups_to_keep(weeklies) U backups_to_keep(monthlies) U backups_to_keep(yearlies)

An imperfect backup is picked up for clean up only if there exists a perfect backup with a newer timestamp. No constraints will be applied on imperfect backups and all of them will be cleaned up.

Attributes

<table> <tr> <th>Name</th> <th>Description</th> <th>Default</th> <th>Required</th> </tr> <tr> <td>lineage</td> <td>Lineage in which the backups belong</td> <td></td> <td>Yes</td> </tr> <tr> <td>keep_last</td> <td>Number of backups to keep from deleting</td> <td><tt>60</tt></td> <td>Yes</td> </tr> <tr> <td>dailies</td> <td>Number of daily backups to keep</td> <td><tt>1</tt></td> <td>No</td> </tr> <tr> <td>monthlies</td> <td>Number of monthly backups to keep</td> <td><tt>12</tt></td> <td>No</td> </tr> <tr> <td>weeklies</td> <td>Number of weekly backups to keep</td> <td><tt>4</tt></td> <td>No</td> </tr> <tr> <td>yearlies</td> <td>Number of yearly backups to keep</td> <td><tt>2</tt></td> <td>No</td> </tr> <tr> <td>timeout</td> <td>Throws an error if the volume could not be cleaned up in the cloud within this timeout (in minutes)</td> <td><tt>15</tt></td> <td>No</td> </tr> </table>

Usage

This resource only handles manipulating volume backups. Managing volumes is handled by the rightscale_volume resource.

Example 1: Creates and attaches 2 volumes using the rightscale_volume resource, and then takes a backup of the volumes using the rightscale_backup resource.

# Creates and attaches two 1 GB volumes
2.times do |count|
  rightscale_volume "db_data_volume_#{count}" do
    size 1
    action [:create, :attach]
  end
end

# Backs up the two volumes to a 'db_backup_lineage' lineage
rightscale_backup "db_data_volume_backup" do
  lineage 'db_backup_lineage'
  action :create
end

Example 2: Restores the backup (created in Example 1) to the server

# Restores the latest backup in the 'db_backup_lineage' taken on or before
# the UNIX timestamp '1391118125'
rightscale_backup "db_data_volume_backup" do
  lineage 'db_backup_lineage'
  timestamp 1391118125
  action :restore
end

Example 3: Deletes old backups

# Deletes old backups from the 'db_backup_lineage' lineage. After this action
# there will be only 2 backups in the cloud.
rightscale_backup "db_data_volume_backup" do
  lineage 'db_backup_lineage'
  keep_last 2
  monthlies 1
  yearlies 1
  dailies 1
  weeklies 1
  action :cleanup
end

Author

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

Dependent cookbooks

rightscale_volume ~> 1.1.0

Contingent cookbooks

There are no cookbooks that are contingent upon this one.

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