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.. _Changelog:
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Unified Changelog file for Synnefo versions >= 0.13
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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Since v0.13 most of the Synnefo components have been merged into a single
repository and have aligned versions.
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v0.14next
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Released: UNRELEASED

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Synnefo-wide
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* Integrate Pithos tests in continuous integration.

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* Change astakosclient to accept AUTH_URL instead of BASE_URL
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  ASTAKOS_BASE_URL settings has been removed from Pithos and Cyclades
  and has been replaced with ASTAKOS_AUTH_URL. Both Pithos and Cyclades
  proxy the Astakos services under ASTAKOS_PROXY_PREFIX path.
  ASTAKOS_PROXY_PREFIX by default has a value of '_astakos'.
  More specifically, Astakos' identity service is proxied under
  '_astakos/identity', Astakos' account service is under '_astakos/account'
  and Astakos' ui service is under '_astakos/ui'.
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* Add 'mail_admins' handler to 'django.request' logger in order to send email
  notifactions to users listed in 'ADMINS' setting about unhandled exceptions
  in the code.

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* Extend astakosclient to request and validate OAuth 2.0 access tokens

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Astakos
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* Changes in project schema:

  * A Project entry is created when submitting an application for a new
    project, rather than on approval. Its state is dependent on the state
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    of its `reference' application (current definition). Lock Project rather
    than Chain (the latter is semantically obsolete).
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  * Project states "Active - Pending" and "Suspended - Pending" have been
    removed. In management command `project-list', the existence of a pending
    modification is indicated by a non-blank `Pending AppID'.

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  * Improve recording of project, application, and membership actions.
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* Implement API calls for projects.

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* Store the base URL of a component. Deployer should provide it when adding
  a new component. Service endpoints originating from a component are
  expected to match its base URL; otherwise, a warning is issued.
  Re-registration with `snf-component-register' affects both the base and
  the ui URL.

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* Changes in resource and quota handling:

  * New resources are registered with unlimited default base quota,
    represented by 2**63-1.
  * Each newly accepted user copies the default value for all resources
    as their own base quota. A base quota is considered 'custom' if its
    value differs from the default.
  * Changing resource's default quota affects the base quota *only* of
    future users.
  * Resource definition got flags 'api_visible' and 'ui_visible',
    replacing flag 'allow_in_projects'. They control whether a user can
    access these resources. The system internally always accounts for
    all resources, and a user can get off quota even for a resource that
    is not visible.

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* Remove API call GET /account/v1.0/authenticate in favor of
  POST /identity/v2.0/tokens.

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* Export basic statistics about Astakos service from '/admin/stats/detail' API
  endpoint. Access to this endpoint is only allowed to users that belong to
  the Astakos groups that are defined in the
  'ASTAKOS_ADMIN_STATS_PERMITTED_GROUPS' setting. Statistics are also availble
  from 'snf-manage stats-astakos' management command.

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* Implement OAuth 2.0 Authorization Code Grant
  Add API calls for authorization code and access token generation

* Add API call for validating OAuth 2.0 access tokens

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* Management commands:
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  * Introduced new commands:
     * component-show
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     * quota-list (replacing quota, supports various filters)
     * quota-verify (replacing quota)
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	 * oauth2-client-add (register OAuth 2.0 client)
	 * oauth2-client-list (list registered oauth 2.0 clients)
	 * oauth2-client-remove (remove OAuth 2.0 client)
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  * Changed commands:
     * component-add got options --base-url and --ui-url
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     * resource-modify --limit became --default-quota
     * user-modify can operate on multiple users with --all and --exclude
     * user-modify --set-base-quota became --base-quota
  * Removed commands:
     * quota
     * resource-import (subsumed by service-import)
     * resource-export-astakos (subsumed by service-export-astakos)
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Cyclades
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* Major changes to Cyclades networks:

  * Implement 'cyclades_network' service, containing the /networks, /ports,
    /subnets and /floatingips API endpoints under '/network/v2.0'.
	The old /networks API of 'cyclades_compute' (under /compute/v2.0) is
	removed.
  * Implement `snf-manage subnet-{create, list, modify, inspect}' management
    commands for handling of subnets.
  * Implement `snf-manage port-{create, list, remove, inspect}' management
    commands for handling of ports.
  * Add two new settings, 'CYCLADES_FORCED_SERVER_NETWORKS' and
	'CYCLADES_DEFAULT_SERVER_NETWORKS' to control the networks that newly
	created servers will be connected.

* Implement Floating IP addresses, which are IPv4 addresses that can be
  dynamically added and removed to a running server.

  * Add new 'cyclades.floating_ip' resource.
  * Implement 'snf-manage floating-ip-{create,list,remove,attach,detach}'
	management commands to handle floating IPs.
  * Add 'floating_ip_pool' attribute to networks to mark networks that can
    be used as floating IP pools.
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* Implement 'resize' server action.

  * Implement the 'resize' server action, to change the flavor of a server.
  Only 'cpu' and 'memory' resizing is supported.

* Compute quotas for CPU and memory of running vms.
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  * Change 'cyclades.cpu' and 'cyclades.ram' resources to represent the CPU
    and RAM for running VMs. Total CPU and RAM usage is represented by new
    'cyclades.total_cpu' and 'cyclades.total_ram' resources.

* Refer to Ganeti NICs by their name instead of their index.

  * Make cyclades give a unique name to each Ganeti NIC. NICs are refered by
    their unique name and not by their index inside the VM that are connected
	to.

* Support firewall profile for all NICs of an instance. Change firewall
  settings to be filled with the unique name of the NIC. The affected settings
  are the GANETI_FIREWALL_{ENABLED, DISABLED, PROTECTED}_TAG settings.
* Add accounting for public IP addresses that is accessible via `snf-manage
  ip-list` management command and via the helpdesk app.
* Implement IPv6 only networks.
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* Extend servers info API response with 'SNF:fqdn' attribute, and introduce
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  CYCLADES_SERVERS_FQDN to set the template for servers FDQN. Remove
  'UI_VM_HOSTNAME_FORMAT' setting.
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* Extend servers info API response with 'SNF:port_forwarding' attribute,
  describing port fowarding rules (DNAT) that are applied to vms. The
  description of such rules is done via the new CYCLADES_PORT_FORWARDING
  setting.
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* Speed up server reconciliation, by performing parallel reconciliation for
  each backend.
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* Change --dhcp option of network management commands from a flag to a boolean
  value, e.g. --dhcp=True
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* Remove 'ARCHIPELAGO_BACKENDS' setting used to distinquish between backends
  that hosted only archipelago backends. Instead allocation is based on which
  disk-templates are enabled in each backend.
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* Implement 'snf-manage server-remove' management command.
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* Move reconciliation of IP pools from 'reconcile-networks' to
  'reconcile-pools'. The IP pool reconciliation does not reconcile the IP
  pools with Ganeti. Instead it checks if the pool is consistent with the
  IPs that are used by instances.
* Do not automatically release externally reserved IPs if they are released
  from a Ganeti backend. Management of externally reserved IPs must be
  performed from Cyclades with 'network-modify' command.
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* Export basic statistics about Cyclades Service from '/admin/stats/detail'
  API endpoint. Access to this endpoint is only allowed to users that belong
  to the Astakos groups that are defined in the 'ADMIN_STATS_PERMITTED_GROUPS'
  setting.  Statistics are also availble from 'snf-manage stats-cyclades'
  management command.
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* Support enforcing quota through command 'enforce-resources-cyclades'.
* Remove command 'resource-export-cyclades' subsumed by
  'service-export-cyclades'.
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* Obsolete PUBLIC_USE_POOL setting, since Cyclades manages IP pool for all
  type of networks.
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* Encrypt / decrypt the instance id / hostname in the  stats URL in
  snf-cyclades-app and snf-stats-app, using the 'CYCLADES_STATS_SECRET_KEY'
  and 'STATS_SECRET_KEY' respectively.
* Add support for snf-vncauthproxy-1.5 and the setting
  'CYCLADES_VNCAUTHPROXY_OPTS', which configures the extra options / arguments
  needed by the newer version of snf-vncauthproxy. Support for older versions
  of snf-vncauthproxy has been dropped. See also the upgrade notes for Synnefo
  and snf-vncauthproxy-1.5.
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* Remove 'DEFAULT_ROUTING_TABLE' setting. If a link for an IP_LESS_ROUTED
  network is not specified, the link will be uniquely named
  'snf-link-$network_id'.
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Cyclades UI
-----------

- Retrieve all networks information from the introduced cyclades network
  service.
- New IPs pane from which user can manage floating IPs.
- Redesign public keys overlay as an additional pane view.
- Split networking configuration into an additional step in machine create 
  wizard.
- Display forced networks and choices of the available floating IPs which will 
  be assigned to the created machine.
- Support for machine resize action. Explicit handling when machine is started
  by displaying an utility shutdown button within the resize overlay.
- Machine IPs toggling subview in icon/single views.
- Replace IPv4/IPv6 with machine's FQDN in icon/single view. When no FQDN can 
  be resolved display a message. Message can be configured using the introduced 
  ``UI_NO_FQDN_MESSAGE``. Setting ``UI_VM_HOSTNAME_FORMAT`` has been removed 
  and no longer used.
- Respect ``SNF:task_state`` machine attribute in order to improve machine
  status display.
- Append software version as a url parameter in HTML static files in order 
  to force browser cache invalidation between versions.
- Configurable Google fonts base url. Fonts base url can be changed usint the 
  ``SYNNEFO_FONTS_BASE_URL`` setting.
- Regression fix: Display reboot required notification on machine firewall
  parameters.
- Handling of ``GANETI_USE_HOTPLUG`` setting. Do not allow live network actions 
  when setting is set to ``False``.
- Double escaping fix in machine create wizard images list and machine details 
  subview.
- Fix image ordering in machine create wizard.


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Pithos
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* Management commands:
  * Introduced new command:
     * file-show

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* Change view authentication
  The pithos views do not use the cookie information for user authentication.
  They request (from Astakos) and use a short-term access token for a
  specific resource.

* Remove PITHOS_ASTAKOS_COOKIE_NAME setting, since it is no longer useful

* Add PITHOS_OAUTH2_CLIENT_CREDENTIALS setting to authenticate the views with
  astakos during the resource access token generation procedure

* Add PITHOS_SERVE_API_DOMAIN setting to restrict file serving endpoints to a
  specific host

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* Refactor metadata schema (table attributes) in Pithos DB to speedup current
objects by domain attribute. This is used by Plankton for listing VM images.

* Enforce container-level atomicity in (most) Pithos API calls.
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* Remove command 'resource-export-pithos' subsumed by 'service-export-pithos'.

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.. _Changelog-0.14.10:

v0.14.10
=======

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Released: Tue Nov 26 11:03:37 EET 2013
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Cyclades
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* This is the first release to support Ganeti 2.8. Support for older versions
  of Ganeti is dropped.
* Use Ganeti opportunistic locking to achive parallelized instance creations
  in the same backend. Add setting 'GANETI_USE_OPPORTUNISTIC_LOCKING' to
  enable the use of this feature.
* Fix warning message while getting object permissions to appear only when
  path is None and the object has permissions
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* Add name to newly created NICs and the corresponding firewall tags.
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.. _Changelog-0.14.9:

v0.14.9
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Released: Mon Nov 11 12:13:31 EET 2013
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* Astakos: Fix minor problems with logging in the Astakos module, which could
  lead to unexpected exceptions

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.. _Changelog-0.14.8:

v0.14.8
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Released: Fri Nov  8 17:25:08 EET 2013
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Synnefo-wide
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* This is the first release to support Debian Wheezy along with Squeeze. You
  can mix and match nodes freely.
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* Update Django dependency to Django>=1.2,<1.5. Django 1.4.5 is available for
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  Squeeze through squeeze-backports.
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* Since this version, Synnefo ships an example Gunicorn configuration file
  that is automatically installed at ``/etc/gunicorn.d/synnefo.example``.
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Cyclades
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* On VM creation, pass the hashmap of the image (pithosmap://) instead of the
  image URL (pithos://). Access to the Pithos DB by Ganeti nodes is no longer
  required.
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* Workaround race between server creation and server deletion. This will be
  fixed properly by updating Ganeti to support the 'depends' attribute for
  OP_INSTANCE_REMOVE.

Astakos
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* For Shibboleth logins, store all attributes along with the user in the DB.
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.. _Changelog-0.14.7:

v0.14.7
=======

Released: Wed Sep 18 17:50:12 EEST 2013

Cyclades
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* Fix bug in helpdesk view

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.. _Changelog-0.14.6:

v0.14.6
=======

Released: Wed Sep 18 16:18:58 EEST 2013

Pithos
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* Substitute the PITHOS_BACKEND_QUOTA setting with two
  distinct settings: PITHOS_BACKEND_ACCOUNT_QUOTA &
  PITHOS_BACKEND_CONTAINER_QUOTA
* Set PITHOS_BACKEND_CONTAINER_QUOTA default value to 0 (unlimited)
* Fix bug that resulted in DB deadlocks.

Cyclades
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* Fix bug in snf-dispatcher that resulted in servers to be deleted from the
  DB even if the corresponding Ganeti job failed.

Branding
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* Add new BRANDING_FOOTER_EXTRA_MESSAGE setting.
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.. _Changelog-0.14.5:

v0.14.5
=======

Released: Wed Aug  7 11:19:49 EEST 2013

Pithos
------

* Fix security issue with handling Pithos versions.


.. _Changelog-0.14.4:

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v0.14.4
=======

Released: Mon Jul 29 12:24:22 EEST 2013

Pithos
------

* Fix bug in reconcile resources management command.


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.. _Changelog-0.14.3:

v0.14.3
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Synnefo-wide
------------

* Use the SYNNEFO_TRACE environmental variable to control whether the greenlet
  tracing code will get loaded or not.
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* Split the HIDDEN_COOKIES setting in HIDDEN_HEADERS and HIDDEN_COOKIES, and
  add the MAIL_MAX_LEN setting, to limit the mail size for unhandled
  exceptions.
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.. _Changelog-0.14.2:

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Released: Fri Jul 12 13:13:32 EEST 2013

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v0.14.2
=======

Cyclades
--------

* Add new setting PITHOS_BACKEND_POOL_SIZE, which configures the size
  of the pool of Pithos backends that are used by plankton.
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.. _Changelog-0.14:
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v0.14
=====
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Released: Tue Jun 25 14:01:19 EEST 2013
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Synnefo-wide
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* Create 'snf_django' Python package to hold common code for all Synnefo
  components.
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* Create a JSON-exportable definition document for each Synnefo Components
  (Astakos, Cyclades, Pithos, etc.) that consolidates APIs (services),
  resources, and other standardized properties (e.g. default URL prefixes).

* Standardize URLs for Synnefo Components, impose structure and naming
  conventions to related settings. Make each component deployable under
  a user-configurable <COMPONENT>_BASE_URL. Each API (compute, image, etc.)
  is deployable under a developer-configurable prefix beneath BASE_URL.

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* Deprecate CLOUDBAR_ACTIVE_SERVICE setting from all apps. 

* Common synnefo 404/500 templates (located in snf-webproject)

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Astakos
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* Redesign of the accounting system (quotaholder) and integration into
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  Astakos.
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  * Simplified the quotaholder model; removed tables Entity and Policy; now
    table Holding contains limit and usage for every holding.
  * Extended table Holding, so that we can keep track of quota for every
    valid combination of holder (e.g. user), resource, and source (e.g. the
    default system or some specific project).
  * Refactored code for issuing and resolving commissions for robustness;
    added a 'force' option to bypass the upper limit check when issuing a
    commission.
  * Simplified syncing to the quotaholder; removed fields from models
    Project and ProjectMembership, previously needed for syncing; removed
    state PROJECT_DEACTIVATED from ProjectMembership.
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  * Removed settings ASTAKOS_QUOTAHOLDER_URL, ASTAKOS_QUOTAHOLDER_TOKEN,
    and ASTAKOS_QUOTAHOLDER_POOLSIZE.

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* API-related changes:

  * Implemented API calls for quota, resources, and commissions.
  * Moved all API calls under '/account/v1.0'.
  * Implemented the keystone API call POST /tokens under '/identity/v2.0'.

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* Service and resource specification and handling:

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  * Specified a format for defining services along with the API endpoints
    and the resources they expose. Migrated internal resource name by
    prefixing it with service name (e.g. 'vm' becomes 'cyclades.vm');
    renamed registered service 'pithos+' to 'pithos'.
  * Specified a procedure to register a Synnefo component, its services and
    their resources in astakos and set the resources' default base quota
    limit. Removed resource definitions from settings.
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  * Moved service and resource presentation data out of the respective db
    models into a separate file of UI constants.

* Converted the limit on pending applications from a setting to a quotable
  resource. Converted the related user setting to a user-specific base quota
  limit. Deprecated model UserSetting; removed setting
  ASTAKOS_PENDING_APPLICATION_LIMIT.

* Changes in locking strategy:

  * Lock only project's chain for all project operations; lock user before
    syncing to quotaholder.
  * When locking multiple rows (e.g. users or holdings) include an ORDER BY
    clause in the query to impose ordering on locking.

* Changes in views:

  * Replaced custom transaction context with a simple decorator for managing
    transactions and a context 'ExceptionHandler', which logs and suppresses
    exceptions

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* Added fine grain user auth provider's policies.

  * Administrator can override default auth provider policies to a specific 
    user or group of users.
  * Optionally a user can be assigned to a list of groups, based on the
    authentication method he choosed to signup.

* Removed explicit handling of SMTP errors on each email delivery. Exceptions 
  are now propagated to base django exception handler.

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* Email used in html/email tempaltes which prompt user to contact for service 
  support prompts is now defined in ``CONTACT_EMAIL`` setting introduced in 
  snf-common settings.

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* Improvements in user activation flow

  * User moderation now takes place after the user has verified his email
    address.
  * User model enriched with additional user state fields
  * Split activation email from moderation process. Administrator is required 
    to moderate user explicitly using the `user-modify --accept` or
    `user-modify --reject` commands.
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  * Improved logging throught out user activation procedures.
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* Remove deprecated AstakosUser model fields: `provider`,
  `third_party_identifier`

* Allow override of authentication provider messages using the following 
  format in setting names: ``ASTAKOS_<PROVIDER_MODULE>_<MSGID>_MSG``

* Cloudbar automatically tries to identify the active service based on window 
  location.

* Removing authentication provider view is now CSRF protected.

* New `API access` view, containing useful information to users on how to 
  access available Synnefo services API's.

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* Remove of ASTAKOS_*_EMAIL_SUBJECT settings. All email subjects are now 
  defined in astakos.im.messages module. Overriding default values can be 
  achieved using custom gettext files or using astakos messages settings::
	
	#change of greeting email subject
  	ASTAKOS_GREETING_EMAIL_SUBJECT_MESSAGE = 'Welcome to my cloud'

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* Remove ``ASTAKOS_ACTIVATION_REDIRECT_URL`` and ``ASTAKOS_LOGIN_SUCCESS_URL`` 
  from astakos .conf file. Settings are dynamically computed based on 
  ``ASTAKOS_BASE_URL``.

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* Management commands:

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  * Introduced new commands:
     * authpolicy-{add, list, remove, set, show}
     * group-{add, list}
     * component-{add, list, modify, remove}
     * reconcile-resources-astakos
     * resource-{export-astakos, import, modify}
     * service-{export-astakos, import, show}
  * Renamed commands:
     * astakos-quota to quota
     * user-update to user-modify
     * full-cleanup to cleanup-full
  * Removed commands:
     * astakos-init
     * invitation-{details, list}
     * project-sync
     * resource-{add, remove}
     * service-{add, remove, token-renew, update}
     * user-invite
     * user-set-initial-quota (integrated its functionality in user-modify and quota)
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  * Added quota and project-related information in user-show command; added
    membership information in project-show.
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Cyclades
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* Make 'type' attribute required for network create API request.
* Networks not created to all Ganeti backends upon creation, they are instead
  created to a backend only when a VM connects to the network.
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* Add 'CYCLADES_ASTAKOSCLIENT_POOLSIZE' setting which tunes the size of the
  http connection pool to astakos.
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* Remove 'CYCLADES_USER_CATALOG_URL' and 'CYCLADES_USER_FEEDBACK_URL' settings
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* Remove CYCLADES_USE_QUOTAHOLDER, CYCLADES_QUOTAHOLDER_TOKEN,
  CYCLADES_QUOTAHOLDER_URL, CYCLADES_QUOTAHOLDER_POOLSIZE settings
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* Rename 'cyclades-usage-verify' management command to
  'reconcile-resources-cyclades'. Also, remove 'cyclades-usage-reset' command,
  which is equivalent to 'reconcile-resources-cyclades --fix'.
* Rename 'cyclades-reconcile-commissions' management command to
  'reconcile-commissions-cyclades'.
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* Remove obsolete 'MAX_VMS_PER_USER', 'MAX_NETWORKS_PER_USER',
  "VMS_USER_QUOTA" and "NETWORKS_USER_QUOTA" settings, since their usage
  is covered by Quotaholder.
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* Remove obsolete setting 'API_ROOT_URL', since it is being covered by
  the use of CYCLADES_BASE_URL* Remove obsolete setting 'API_ROOT_URL', since
  it is being covered by 'CYCLADES_BASE_URL'.
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* Remove obsolete settings GANETI_DISK_TEMPLATES and
  DEFAULT_GANETI_DISK_TEMPLATE
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Cyclades helpdesk
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* Additional start/stop vm action
* Display extend backend info in vm's view
* Fixed IP lookup

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Pithos
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* Remove PITHOS_AUTHENTICATION_USERS setting, which was used to override
  astakos users.
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* Remove 'PITHOS_USER_CATALOG_URL', 'PITHOS_USER_FEEDBACK_URL' and
  'PITHOS_USER_LOGIN_URL' settings.
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* Remove PITHOS_USE_QUOTAHOLDER, PITHOS_QUOTAHOLDER_URL,
  PITHOS_QUOTAHOLDER_TOKEN and PITHOS_ASTAKOSCLIENT_POOLSIZE
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Tools
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.. _Changelog-0.13:

v0.13
=====

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Released: Wed Apr 10 18:52:50 EEST 2013
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In v0.13 the code was very heavily refactored for increased uniformity since
most of the Synnefo components have been merged into a single repository. Thus,
**just for this version** we will not document a complete Changelog (features,
fixes, improvements, issues, setting changes), but rather just copy from the
`NEWS` file with minor additions wherever needed.

Synnefo-wide
------------

* Support for pooling throughout Synnefo

  * Pooled Django DB connections, Pithos backend connections, HTTP
    connections using single `objpool` package

* Improved management commands

  * Unified codebase for output of tables in JSON, CSV

* Bring most of Synnefo code inside a single, unified repository

  * support automatic Python and Debian package builds for individual commits
  * with automatic version generation

* Overhauling of Synnefo settings: renames and refactoring, for increased
  uniformity (in progress)
* Deployment: Standardize on gunicorn, with gevent-based workers
  and use of Green threads throughout Synnefo
* Documentation: New scale-out guide, with distinct node roles,
  for mass Synnefo deployments

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Astakos
-------

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* Support multiple authentication methods

  * Classic (username/password), Shibboleth, LDAP/Active Directory,
    Google, Twitter, LinkedIn
  * Users can enable/disable auth methods, and switch between them

* Introduce a UUID as a global identifier for users, throughout Synnefo

  * The UUID remains constant as the user enables/disables login methods

* Allow users to modify their email address freely
* Per-user, per-resource accounting mechanism (quotaholder)
* Full quota support, with per-user, per-resource quotas, based on quotaholder
* Projects: Users can create and join Projects

  * Projects grant extra resources to their members

* UI Enhancements for quotas and projects

  * distinct Usage tab, showing usage of individual resources
  * Project management UI
  * New Overview page
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* refactored/improved /login endpoint used by desktop/mobile clients.
  * endpoint url is now exposed by `weblogin` service
  * clients should use unauthenticated identity/tokens api to resolve the 
    endpoint url
  * view only allows redirects to `pithos://` scheme urls
  * removed uuid from redirect parameters. Client should use authenticated 
    request to identity/tokens to retrieve user uuid.


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* Commission resources on quotaholder/Astakos
* Support mass creation of flavors
* Support for the ExtStorage disk template in Ganeti
* Query and report quotas in the UI
* Pass VM configuration parameters over a VM-side API (`vmapi`)

  * Do not pass sensitive data as Ganeti OS parameters
  * Keep sensitive data in memory caches (memcached) and
    never allow them to hit the disk

* Display additional backend information in helpdesk machines list
* Allow helpdesk users to search for an account using a known machine id
* Helpdesk actions are now logged using the synnefo's common login
  infrastructure
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UI
^^
* Removed feedback endpoint. Feedback requests delegate to astakos feedback
  service. ``FEEDBACK_CONTACTS``, ``FEEDBACK_EMAIL_FROM`` settings removed, 
  and no longer used.
* ``UI_LOGIN_URL``, ``UI_GLANCE_URL``, ``COMPUTE_URL`` settings no longer 
  required to be set and are dynamically computed based on ``ASTAKOS_BASE_URL``
  and ``CYCLADES_BASE_URL`` settings.
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* File group is no longer included in ssh keys personality metadata sent in 
  create vm calls.
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Pithos
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* Support storage of blocks on a RADOS backend, for Archipelago
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  * new settings:
    PITHOS_RADOS_STORAGE, PITHOS_RADOS_POOL_BLOCKS, PITHOS_RADOS_POOL_MAPS

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* X-Object-Public now contains full url (domain + proper component prefix + 
  file path)

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* Rewritten support for public URLs, with admin-selectable length
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  * new settings:
    PITHOS_PUBLIC_URL_SECURITY, PITHOS_PUBLIC_URL_ALPHABET

* Enable pithos backend to use external quotaholder component

  * new settings:
    PITHOS_USE_QUOTAHOLDER, PITHOS_QUOTAHOLDER_URL, PITHOS_QUOTAHOLDER_TOKEN,
    PITHOS_QUOTAHOLDER_POOLSIZE

* Moderated version debiting mechanism

  * new setting:
    PITHOS_BACKEND_FREE_VERSIONING

* Proxy Astakos user-visible services

  * new settings:
    PITHOS_PROXY_USER_SERVICES, PITHOS_USER_CATALOG_URL,
    PITHOS_USER_FEEDBACK_URL, PITHOS_USER_LOGIN_URL

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Tools
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-----

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* Extend snf-burnin to include testing of Pithos functionality