Synnefo

Changelog

---------

v0.12.0

*******

FIXES:

  UI:

	* Fix unclosed DIV's and other minor html fixes.

	* 

NEW FEATURES:

  UI:

	* Optionally group public network interfaces in one network view in ui 

	  Configurable by the UI_GROUP_PUBLIC_NETWORKS setting (defaults to True).

	* New setting UI_CHANGES_SINCE_ALIGMENT to allow aligment of the date used

	  by ui in api calls that support changes-since parameter.

v0.11.0

*******

FIXES:

  LOGIC:

	* Fix bugs concerning reconcilliation of building vms (#2288, #2289)

	* Fix bug in dispatcher default file

  UI:

        * Fixed default UI settings importing synnefo settings:

	  Admin must set FEEDBACK_EMAIL_FROM explicitly.

NEW FEATURES:

  LOGIC:

	* Support multiple Ganeti backends and correlated management commands:

	  snf-manage [backend-add, backend-list, backend-modify, backend-remove]

	* Support for different types of networks (public routed, physical vlan,

	  MAC filtered)

	* IP Pool management

	* Enhance reconcile management command, to reconcile instance NICS

	* Management commands for reconciliation of networks and pools:

	  snf-manage [reconcile-networks, reconcile-pools]

	* New management commands for inspecting the state of network and server in

	  DB and all backends: snf-manage [network-inspect, server-inspect]

	* New management command for creating a network: snf-manage

	  network-create

	* New synnefo.db schema and data migrations

	* New settings for MAC-prefix pool: MAC_POOL_BASE, MAC_POOL_LIMIT

	* Replaced GANETI_NULL_LINK with PUBLIC_ROUTED_ROUTING_TABLE

	* Replaced GANETI_LINK_PREFIX with PRIVATE_PHYSICAL_VLAN_BRIDGE_PREFIX

	* Replaced GANETI_MAX_LINK_NUMBER with PRIVATE_PHYSICAL_VLAN_MAX_NUMBER

	* Replaced PRIVATE_MAC_FILTERED_BRIDGE

	* Add setting ENABLED_NETWORKS

	* Add setting SECRET_ENCRYPTION_KEY

	* Add settings for configuring each network type

v0.10.0

*******

* Improve dispatcher stale pid lockfile handling

* Changed default value of UI_MEDIA_URL

  To match debian package default path (`/static/ui/static/snf/`)

* Private networks quota setting added (``MAX_NETWORKS_PER_USER``)

* Simple per user networks/vms quota mechanism based on

  NETWORKS_USER_QUOTA/VMS_USER_QUOTA settings. 

  This allows you to override the global per user quota for the specific user 

  ids::

	# limit all users to 2 vms per user

  	MAX_VMS_PER_USER = 2

	# but let `user1@grnet.gr` and `user2@grnet.gr` to be able to create up to

	# 10 vms each.

	VMS_USER_QUOTA = {

		'user1@grnet.gr': 10, 

		'user2@grnet.gr': 10

	}

* Fix error message when no available network links can be created.

* Added setting for public network in Ganeti (``GANETI_PUBLIC_NETWORK``)

* Added setting for RabbitMQ endpoints (``AMQP_HOSTS``)

* Mechanism for serializing messages from ganeti based based on event timestamp

* Management command for inspecting messages of a queue (``queue-inspect``)

* new synnefo.db migration

v0.9.14

*******

Logic

^^^^^

* Remove messages that can not be handled from queue 

UI

^^

* Fix create view image selection, Refs (#2487)

* Display stats period selection in ui 

* Improve wording on vm create view 

* Console popup window fix for safari (#2463)

* Use 'id_rsa' as the filename for the downloaded private key (#2461)

* Changed the name of the auto generated public key ('my generated public key')

v0.9.13

*******

* Restore plankton backends from invalid commit

v0.9.12

*******

* Update copyright notice on ui footer 

* Improve readability of vm password in ui 

* Fix nonexistent image metadata handling 

* Fix multiple connect actions sent to the server (#2358)

* Fix history handling (#2299)

* Fix python-daemon required version 

v0.9.11

*******

* listservers management command unicode workaround

v0.9.10

*******

* Fallback to displaying the image id if it can not resolve it.

* Remove **detect-orphan-{servers,networks}.

v0.9.9

******

* Update footer links

* Fix create view default flavor

* Updated setup.py required packages versions

v0.9.8

******

* Fix empty user information in feedback mails

v0.9.7

******

* Verify VNC server settings in get_console

* Management commands additions / improvements / fixes

* UI application fixes/improvements

* Other minor bugfixes

v0.9.2

******

* ui.userdata migration fixes

* new synnefo.db migrations (fixes constrain issues)

v0.9.1

******

* Bumped version for debian package to upgrade from 0.9.0rc1

v0.9.0

******

* Removed link_static management command from synnefo.ui app

* Astakos integration in ui and api

* Cloudbar integration in ui

2011-11-29, v0.7.4

******************

FIXES:

	OKEANOS_INTRO:

		* News section

2011-10-21, v0.7.3

******************

FIXES:

	UI:

		* Fix two UI glitches with Firefox 3.6 (#1545, #1546)

2011-10-19, v0.7.2

******************

FIXES:

    UI:

	    * Fix regressions with flavor sorting and image size checking

		  (#1429, #1507)

2011-10-17, v0.7.1

******************

FIXES:

    UI:

        * Fix Enter/Esc on machine rename not working in the UI (#1501)

	    * Fix UI barfs if a VM is based on an Image with state=DELETED (#1494)

        * Fix UI user logout action does not work (#1497)

    Images:	

		* Fix erroneous reference to $(HELPER_DIR) in /etc/default /snf-image (#1498)

		* Fix typo in snf-image-helper ChangePassword task (#1500)

		* Show timestamps on execution of helper tasks in snf-image helper VM (#1499)

    Deployment:

		* Improve check for Ganeti master in snf-ganeti-eventd init script (#1323)

		* Fix snf-ganeti-eventd init script ignored defaults file (#1505)

2011-10-13, v0.7

****************

NEW FEATURES:

    UI:

        * From the ground-up rebuilt, refactored MVC-based UI (#1443)

        * Document all settings introduced due to UI refactoring (#1447)

        * UI asset files versioning (#1460)

        * Improve feedback on completed steps during machine creation (#1461)

    Images:

        * Completely re-engineered image deployment mechanism based on

          snf-image Ganeti OS provider, in isolated helper VM

        * Support public and private images (#555)

        * Support handling of VM filesystem, injection of arbitrary files

          on VM creation (#491)

        * Implement file injection as a task in snf-image (#1095)

        * Remove all-host based processing of (potentially user-provided)

          Images (#969)

    API:

        * Implement <personality> tag in OpenStack Compute API

          for file injection (#985, #1093)

        * Update API implementation for server/image metadata based on latest

          draft version of spec (#1403)

        * Support deletion of Flavors, support servers referring to

          inexistent (deleted) Flavors (#1157)

    Admin:

        * Addition of **meta option to snf-admin image for easy setting

          of image metadata values on image creation (#1107)

    Deployment:

        * Initial iteration of a system test suite, snf-burnin,

          for end-to-end testing of Synnefo deployments (#1155)

        * Re-engineered logging mechanism, for finer-grained control (#1033)

        * Add init script for snf-ganeti-eventd, fix Debian packaging (#1323)

        * Document removal of Flavors from circulation (#1472)

        * Add generic service unavailable template (#1359)

FIXES:

    UI:

        * Fix problems when reusing the Create machine wizard with IE8 (#997)

        * Fix problematic update of the networks tab and minor fixes (#861)

        * Fix "Connecting" and "progress" gif in networks tab (#863)

        * Fix inconsistencies on machine transitions between views (#917)

        * Fix IE rendering mode (#975)

        * Fix UI machine/network creation overlays style clutter (#979)

        * Have UI should reset action confirmations after state change (#981)

        * UI barfs due to exception on "New Machine" wizard (#1473)

        * UI throws exception on single-server view (#1483)

    API:

        * Fix incomplete constraints in ImageMetadata Model (#1255)

    Deployment:

        * Split initial_data.json to work around South "feature" (#1263)

        * Fix missing snf-ganeti-instance-image package dependency (#1319)

    Kamaki:

        * The kamaki client lib uses the root logger (#1337)

        * The kamaki client lib fails to set server metadata (#1399)

    Invitations:

        * FIx bug causing HTTP 500 error on /invitations/login (#1407)

        * Fix sort order of flavors, sort by actual characteristicts (#1429)

        * Fix display of error modal boxes, do notrefresh or display another

          error (#1433)

        * Fix positioning of machines in "Destroying" (#1437)

        * Fix Metadata button shown as clickable while it's not (#1441)

    Images:

        * Missing dependency on 'qemu-img' in snf-image-helper (#1484)

    Logic:

        * Fix messages left in the queue due to unknown Ganeti opcodes (#1492)

2011-09-15, v0.6.2

******************

FIXES:

    UI:

        * Fix handling of Images in state=DELETED,

          allow sorting and categorization of Images in the UI (#823)

        * Fix the "Create New wizard" does not honor selection of

          "small/medium/large" images (#1129)

    Admin:

        * Fix the admin interface throws exception on the

          Invitations tab (1105)

    API:

        * Make API responses uncacheable (#1091)

    Logic:

        * Fix The dispatcher leaving messages unprocessed for

          unknown Ganeti opcodes(#1111)

NEW FEATURES:

    Admin:

        * Support filtering based on state, support image registration

          with mandatory type argument, make all deletion operations

          set state to DELETED (#849)

    API:

        * Allow marking flavors as removed, honor deleted flag (#1055)

2011-09-13, v0.6.1

******************

FIXES:

    UI:

        * Make all AJAX requests to the API uncache-able

2011-09-12, v0.6

****************

NEW FEATURES:

    Admin:

        * Initial version of new Web-based admininstration panel, allows

          management of Synnefo entities directly on the DB (#849)

        * Allow setting https apiurl and token in cloud tool (#853)

    Deployment:

        * Overhauled reconciliation mechanism, unit tests (#1021, #811)

    UI:

        * Overhaul CPU/RAM/disk sliders in UI to be more intuitive (#843)

        * Support setting of small, medium large flavors in UI (#815)

        * Have the UI filter flavors, depending on image size (#817)

        * Better, error-specific handling of error codes in UI (#971)

        * Implement retrieval of authentication token from the UI (#977)

        * Re-worked invitation UI is more vocal on errors, supports pagination

          (#1039)

        * Support a list of UI-specific metadata keys to be copied from Image

          to newly-created Server (#847)

    Images:

        * Support dd-based deployment of Windows and Linux images, using only

          dd-based sequential I/O, get rid of ntfsclone (#965, #1007)

FIXES:

    UI:

        * Fix Opera failing with "too old changes-since value" when idle (#521)

        * Fix UI problems with Firefox 3.5.x (#781)

        * Fix server statistics not refreshing properly in the UI (#881)

        * Machine rename icon not visible on IE (#909)

        * Fix list view fail not updating machine state properly (#915)

        * Fix colors in "Error" state (#953)

        * Fix the confirmation bar disappearing at times (#955)

        * Hide all actions when in state "Destroying..." (#957)

        * Disable connect action when machine has no ip set (#983)

        * Update image details on last vm creation step overlay on IE (#1011)

        * Fix list view displays UI error when servers are updated on IE

          (#1013)

        * Make "Add invitation", remove invitation button appear clickable

          (#1019)

    Logic:

        * Fix Logic layer complaining about certain Ganeti opcodes (#1031)

2011-08-29, v0.5.5

******************

FIXES:

    Logic:

        * Bugfixes, reconnect to AMQP properly when connection drops,

          added more DEBUG- and INFO-level logging messages.

2011-07-27, v0.5.4

******************

FIXES:

    UI:

        * Numerous bugfixes, most in response to user feedback from

          the Alpha deployment

        * #813 (Minor UI issues), #857 (long machine names),

          #865 (problem when user has zero invitations),

          #873 (generic 404 template), #895 (default username in RDP file),

          #897 (show spinner for the public network), 899 (allow Connect

          from the network UI), #901 (cannot select password for copying

          with Chrome), #893 (firewall profile selection behaves as a single

          list for all servers), #903 (cannot copy paste IPv4 in icon view),

          #905 (Javascript throws exception when left idle), #907 (similar

          issue with #907), #913 (list view alert message)

    Images:

        * ntfsclone does not use all of the available space on the target (#879)

    Deployment:

        * Move fix_amqp_settings to queue system init code (#809)

    Admin:

        * snf-admin user invite is not non-ascii friendly (#943)

        * snf-user should show email addresses, even without any arguments (#871)

FEATURES:

    UI:

        * Show completion percentage when a machine is being built (#887)

    API:

        * Report percentage completion for machines in BUILD (#891)

    Images:

        * The image deployment layer should report completion to the API layer

          (#889)

    Deployment:

        * Drop ganeti-eventd & snf-ganeti-hook synnefo dependency (#691)

        * Split Synnefo Ganeti tools to separate project under snf-cyclades-gtools/

        * Import code for building Debian packages, refactor repository (#691)

2011-07-19, v0.5.3.1

********************

FIXES:

    API:

        * Fix bug with firewall code using inexistent, removed setting

    GUI:

        * Fix bug with invitations UI (#859)

        * Fix bug with feedback form submission raising HTTP 500

    Deployment:

        * Fix bug with error reporting by the invitations app

2011-07-19, v0.5.3

******************

FIXES:

    GUI:

        * Add separate LOGOUT_URL setting

          fixes bug with URL in invitations mail

    Deployment:

        * Recode invitations email in UTF-8

        * Use DEFAULT_FROM_EMAIL Django setting as From: header

          for all emails

2011-07-18, v0.5.2

******************

FIXES:

    GUI:

        * Improve IPv6 support in UI (#839, #841)

        * Improve Connect messages, propose username (#801)

        * Add "tag"/"value" headers in Modify tags popup (#845)

    API:

        * Support arbitrary arguments to RAPI CreateInstanceCall() (#835)

    Admin tool:

        * Support creation and modification of users, flavors, images (#827)

        * Support sending invitations from the command line

2011-07-14, v0.5.1

******************

FIXES:

    GUI:

        * non-standard dpi settings (#343)

        * many minor bugs (#717)

        * remove "Login again" button from Java VNC viewer (#731)

        * Fix no firewall settings shown for newly built machines (#753)

        * Fix handling of transitional "Destroying" state (#771)

        * Use well-formed, client- and server-specific messages

          for the Connect operation (#801)

        * Fix misaligned action labels in IE (#821)

          generic cross-browser compatibility fixes (#341)

    Logic:

        * fix dispatcher flushing AMQP queues (#719)

        * Support asynchronous VM deletion (#721)

        * Add backend prefix to all AMQP queues (#723)

        * Document workarounds for dispatcher daemonization problems

          when logging to stdout (#779)

    Images:

        * Fix ntfsclone causing excess I/O load due to verbose output (#729)

    API:

        * Have API use the flavor-defined disk sizes (#759)

        * Make backend disk templates (plain, drbd) configurable (#77&)

        * Work around Ganeti bug with getting VNC console info (#783)

        * Set serial_console=False explicitly on Ganeti backend (#785)

        * Allow exception info to propagate when VNC console allocation fails

          (#789)

        * Handle deletion of machines in ERROR when no Ganeti instance exists

          (#799)

    Backend:

        * Synchronize contrib/kvm-vif-bridge to agree with the API on the tags

          to use for firewall profiles (#789)

NEW FEATURES

    GUI:

        * Add themed form for invitations, integrate with UI (#439)

        * Add themed feedback form, integrate with API error window

          (~okeanos #7)

    Admin tool:

        * Add initial version of snf-admin tool for user, VM and image

          management (#727)

2011-07-01, v0.5

****************

NEW FEATURES

    GUI:

        * Overhauled icon and single-server view, updated color set

          (#651, #653, #667, #669, #673, #675, #677, #443, #631)

        * Added statistics, retrieves pre-processed PNGs from backend (#527)

        * Added buttons for modifier keys, custom theming to Java VNC client

          (#545)

        * Support single-click RDP-based connection to Windows VMs (#673)

        * Allow setting network firewall profiles on public interfaces (#661)

    Images:

        * Complete set of Linux distribution Images (Debian, Fedora, Ubuntu)

          (#493, #509)

        * Complete support for Windows machines (create, customize, boot)

          (#495)

    Logic:

        * Support centralized logging, logging.conf-based setup (#547)

    AAI:

        * Allow per-user setting of number of outgoing invitations (#439, #705)

        * Support "switch-user"-type functionality for helpdesk users (#665)

        * Support user logout in the UI, delete relevant tokens (#663)

    API:

        * Supports retrieval of statistics (#527)

        * Support maximum number of VMs per user (quota) (#703)

        * Extend API to support distinct firewall profiles, update backend (#659)

    Deployment:

        * BSD 2-clause Licensing (#581)

        * Initial translation of UI to Greek (#689)

        * Drop Django dependency in snf-ganeti-eventd and snf-ganeti-hook (#691)

          Synnefo dependency remains, already patched by ops, to be committed

        * Split settings.py to distinct files under settings.d/ (#693)

        * Use the Django email framework (#697)

        * Implemented statistics-gathering mechanism at the backend (#527)

FIXES:

    GUI:

        * Too many bug fixes to mention (#403, #429, #465, #473, #557, #589,

          #599, #605, #607, #609, #611, #613, #619, #621, #623, #625, #627,

          #629, #633, #635, #637, #639, #641, #643, #645, #647, #649, #655,

          #657, #681, #687, #699, #701, #707, #709)

        * Better cross-browser compatibility (#341)

        * Should work with relative URLs (#421)

    Images:

        * Set hostname in Linux VMs appropriately (#603)

    Logic:

        * Include EUI-64-derived IPv6 address in ganeti-net-status notifications

          (#615)

    Deployment:

        * Do not set nodes explicitly, use iallocator at Ganeti backend (#617)

2011-06-06, v0.4

****************

NEW FEATURES:

    GUI:

        * Support displaying info on and handling of public and private networks,

          with differential updates (#407, #469)

        * Support create new private network (#541), add machine to

          private network (#543)

        * Design and implement a completely revamped blue and orange

          color theme (#529, #531)

        * Implement improved add/edit metadata dialog with suggested values for

          keys (#535, #537)

        * Implement list of suggested keys in add server metadata dialog (#537)

        * Add full-screen Console window, themed as the rest of the UI (#497)

        * Implement single-machine view in the UI (#573)

        * Add user notification (spinner) on button clicks performing

          API actions (#471)

        * Full IE support, differential updates (#461)

    AAI:

        * Each token has its own expiration date, fix expiration of

          development test token (#483)

        * Support adding new users to the DB by invitation (#439)

    API:

        * Extend networks API, support differential updates for private nets (#569)

        * Support XML replies for the /networks API namespace (#553)

        * Implement mechanism for reconciliation of DB state with Ganeti backend

          state in case of AMQP failure (#505)

        * Support Ganeti link pooling for management of private networks (#513)

        * Support reception and processing of NIC configuration notifications

          from Ganeti over AMQP (#513)

    IMAGES:

        * Implement generic API<->Ganeti mechanism for passing custom VM parameters (#487)

        * Support selection and handling of OS images for VM customization (#489)

        * Support random selection and enforcement of root password on Linux VMs (#485)

    GANETI BACKEND:

        * Design and implement mechanism for handling network connection requests,

          based on link ids of virtual NICs (#411)

        * Support handling of public and private networks,

          based on NFDHCPD and custom KVM ifup scripts (#407, #411)

FIXES:

    GUI:

        * Remove extraneous GET /server/id/meta requests (#463)

        * Fix location of the "Create New" wizard in IE (#467)

        * Make numerous hardcoded strings translatable (#473)

        * Fix alignment of step names in "Create New" wizard (#475)

        * Fix OS icons not appearing in Opera (#477)

        * Fix correspondence of OS icons to icon URIs (#481)

        * Fix console action inoperable in list view (#497)

        * Fix HTTP errors from backend not reported correctly (#523)

        * Fix handling of API "UKNNOWN" status for servers (#571)

        * Add SVG-derived icons for Fedora in multiple resolutions (#587)

        * Various minor UI glitches (#583, #585, #591)

    API:

        * Fix entering Greek characters in fields failed (was due to

          problem with db creation parameters in MySQL) (#499)

        * Fix return erroneous 304 NOT MOTIFIED for GET /servers if only

          server metadata modified (#525)

        * Fix return erroneous "UNKNOWN" status under specific circumstances (#573)

        * Remove private network connections when a server is deleted (#579)

KNOWN DEFECTS:

    GUI:

        * Does not work with relative URLs (cannot deploy under subdir) (#421)

        * UI breaks if "Create New" called twice in quick succession (#609)

        * Esc/Enter keys do not work in edit metadata window (#605)

        * No spinner icon on outstanding requests for updates to private networks (#607)

        * Error window overflows in case of longer-than-usual traceback in

          "Details" field (#611)

        * Single-server view does not update properly (#613)

    IMAGES:

        * Image deployment mechanism does not set Linux hostname properly (#603)

    GANETI BACKEND:

        * No IPv6 reported from the Synnefo Ganeti hook to the API

          (backend, API and UI can all handle IPv6 though) (#615)

        * All VMs currently allocated to the first Ganeti node, since no

          allocator has been installed in the development Ganeti yet (#617)

    Deployment:

        * No rigorous testing of data migration, migrations in real-world

          conditions will probably fail (#503)

2011-05-10, v0.3

****************

FIXES/NEW FEATURES:

    GUI:

        * Report connection failures correctly, instead of a bogus 503 error (#427)

        * Support rename Virtual Machines using a nifty pencil icon (#429)

        * Fix complete failure of site with IE (starts, has known defects) (#431)

        * Support expanding box in icon view, containing metadata info (#375, #435, #441)

        * Support providing X-Auth-Token headers for authentication (#455)

        * Support Java applet-based popup for VNC console access (#391)

        * Initial implementation of "networks" tab interface mockup, no actual functionality (#415)

    AAI:

        * End-to-end Shibboleth support (#345)

    API:

        * Support creation, management and removal of private L2 networks (#409, #457)

        * Fix API implementation does not return unAuthorized cloud faults (#459)

        * Merge support for X-Auth-Token based authentication (#423)

    Logic:

        * Re-engineer messaging layer, migrate from 0mq to an AMQP-based infrastructure (#393)

        * Extended dispatcher, provides the context for executing business layer functions (#393)

        * Extended Ganeti event daemon, publish notifications over AMQP (#393)

        * Support a generic Synnefo hook in Ganeti, publish notifications over AMQP (#393, #397)

        * Extend logic layer, process NIC configuration notifications, update VM info in DB (#397)

    Deployment:

        * Add improved version of README.deploy, detailing node types in a Synnefo deployment

KNOWN DEFECTS:

    GUI:

        * Inoperative console action in list view (#497)

        * Various UI glitches under Chrome/Safari (wizard)

        * Serious functionality glitches with IE (no auto-refresh, no machine rename)

        * Serious UI glitches with non-standard dpi settings (#343)

        * Does not work with relative URLs (cannot deploy under subdir) (#421)

    API:

        * No Greek characters allowed in server names with the MySQL backend (#499)

    Deployment:

        * No rigorous testing of data migration, migrations in real-world conditions will probably fail (#503)

2011-04-19, v0.2.2

******************

Bug fix release:

    GUI:

        * Fix start operation breakage due to extra argument in API call (#433)

2011-04-19, v0.2.1

******************

Bug fix release:

    GUI:

        * Fix shutdown operation breakage due to extra argument in API call (#433)

2011-04-19, v0.2

****************

FIXES/NEW FEATURES:

    GUI:

        * Show transitional state when command is in progress ("Starting", etc) (#401)

        * Allow only "destroy" for machines being built (#399)

        * Show nice icons for the icon, list and single view (#389)

        * Show the VM configuration (flavor) in list view (#387)

        * Add Destroy action in icon view (#381)

        * Show spinner when action is in progress (#379)

        * Handle OS icons properly for Images and machines, user-controlled (#257)

        * Support modification of VM metadata (currently: only addition, removal) (#375)

        * Support machine rename (#307)

        * Show welcome screen when no VMs defined (#279)

        * Revamped "Create New" wizard (#83)

    API:

        * Return buildInProgress properly (#351)

        * Loads of new unit tests (#417)

        * Support OOB console access over VNC using vncauthproxy

            - Run as daemon, support automatic port selection (#419)

        * Refactor ganeti-0mqd

            - Run as daemon, receive messages from Ganeti hooks, publish over 0mq

    Deployment:

        * Add initial version of README.deploy, detailing service dependencies

        * Add support for database migrations, using Django South (#371)

        * Install continuous integration platform (Jenkins), run tests automatically (#383)

KNOWN DEFECTS:

    GUI:

        * Minor visual problems with Firefox 3.5 (#403)

        * Major cross-browser compatibility problems (no IE support) (#431, #341)

        * Requires installation under /, does not work with relative URLs (#421)

        * Incorrect 503 return code when server is unreachable (#427)