change dirs to use new opnfv doc build script

Change-Id: Icfc17b1370fc111e0e9919f2f1c1d9ea8aee2702
Signed-off-by: Ryota MIBU <r-mibu@cq.jp.nec.com>

1 files changed, 0 insertions, 251 deletions

diff --git a/design_docs/notification-alarm-evaluator.rst b/design_docs/notification-alarm-evaluator.rst
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-..
- This work is licensed under a Creative Commons Attribution 3.0 Unported
- License.
-
- http://creativecommons.org/licenses/by/3.0/legalcode
-
-============================
-Notification Alarm Evaluator
-============================
-
-.. NOTE::
-   This is spec draft of brlueprint for OpenStack Ceilomter Liberty.
-   To see current version: https://review.openstack.org/172893
-   To track development activity:
-   https://blueprints.launchpad.net/ceilometer/+spec/notification-alarm-evaluator
-
-https://blueprints.launchpad.net/ceilometer/+spec/notification-alarm-evaluator
-
-This blueprint proposes to add a new alarm evaluator for handling alarms on
-events passed from other OpenStack services, that provides event-driven alarm
-evaluation which makes new sequence in Ceilometer instead of the polling-based
-approach of the existing Alarm Evaluator, and realizes immediate alarm
-notification to end users.
-
-Problem description
-===================
-
-As an end user, I need to receive alarm notification immediately once
-Ceilometer captured an event which would make alarm fired, so that I can
-perform recovery actions promptly to shorten downtime of my service.
-The typical use case is that an end user set alarm on "compute.instance.update"
-in order to trigger recovery actions once the instance status has changed to
-'shutdown' or 'error'. It should be nice that an end user can receive
-notification within 1 second after fault observed as the same as other helth-
-check mechanisms can do in some cases.
-
-The existing Alarm Evaluator is periodically querying/polling the databases
-in order to check all alarms independently from other processes. This is good
-approach for evaluating an alarm on samples stored in a certain period.
-However, this is not efficient to evaluate an alarm on events which are emitted
-by other OpenStack servers once in a while.
-
-The periodical evaluation leads delay on sending alarm notification to users.
-The default period of evaluation cycle is 60 seconds. It is recommended that
-an operator set longer interval than configured pipeline interval for
-underlying metrics, and also longer enough to evaluate all defined alarms
-in certain period while taking into account the number of resources, users and
-alarms.
-
-Proposed change
-===============
-
-The proposal is to add a new event-driven alarm evaluator which receives
-messages from Notification Agent and finds related Alarms, then evaluates each
-alarms;
-
-* New alarm evaluator could receive event notification from Notification Agent
-  by which adding a dedicated notifier as a publisher in pipeline.yaml
-  (e.g. notifier://?topic=event_eval).
-
-* When new alarm evaluator received event notification, it queries alarm
-  database by Project ID and Resource ID written in the event notification.
-
-* Found alarms are evaluated by referring event notification.
-
-* Depending on the result of evaluation, those alarms would be fired through
-  Alarm Notifier as the same as existing Alarm Evaluator does.
-
-This proposal also adds new alarm type "notification" and "notification_rule".
-This enables users to create alarms on events. The separation from other alarm
-types (such as "threshold" type) is intended to show different timing of
-evaluation and different format of condition, since the new evaluator will
-check each event notification once it received whereas "threshold" alarm can
-evaluate average of values in certain period calculated from multiple samples.
-
-The new alarm evaluator handles Notification type alarms, so we have to change
-existing alarm evaluator to exclude "notification" type alarms from evaluation
-targets.
-
-Alternatives
-------------
-
-There was similar blueprint proposal "Alarm type based on notification", but
-the approach is different. The old proposal was to adding new step (alarm
-evaluations) in Notification Agent every time it received event from other
-OpenStack services, whereas this proposal intends to execute alarm evaluation
-in another component which can minimize impact to existing pipeline processing.
-
-Another approach is enhancement of existing alarm evaluator by adding
-notification listener. However, there are two issues; 1) this approach could
-cause stall of periodical evaluations when it receives bulk of notifications,
-and 2) this could break the alarm portioning i.e. when alarm evaluator received
-notification, it might have to evaluate some alarms which are not assign to it.
-
-Data model impact
------------------
-
-Resource ID will be added to Alarm model as an optional attribute.
-This would help the new alarm evaluator to filter out non-related alarms
-while querying alarms, otherwise it have to evaluate all alarms in the project.
-
-REST API impact
----------------
-
-Alarm API will be extended as follows;
-
-* Add "notification" type into alarm type list
-* Add "resource_id" to "alarm"
-* Add "notification_rule" to "alarm"
-
-Sample data of Notification-type alarm::
-
-  {
-      "alarm_actions": [
-          "http://site:8000/alarm"
-      ],
-      "alarm_id": null,
-      "description": "An alarm",
-      "enabled": true,
-      "insufficient_data_actions": [
-          "http://site:8000/nodata"
-      ],
-      "name": "InstanceStatusAlarm",
-      "notification_rule": {
-          "event_type": "compute.instance.update",
-          "query" : [
-              {
-                  "field" : "traits.state",
-                  "type" : "string",
-                  "value" : "error",
-                  "op" : "eq",
-              },
-          ]
-      },
-      "ok_actions": [],
-      "project_id": "c96c887c216949acbdfbd8b494863567",
-      "repeat_actions": false,
-      "resource_id": "153462d0-a9b8-4b5b-8175-9e4b05e9b856",
-      "severity": "moderate",
-      "state": "ok",
-      "state_timestamp": "2015-04-03T17:49:38.406845",
-      "timestamp": "2015-04-03T17:49:38.406839",
-      "type": "notification",
-      "user_id": "c96c887c216949acbdfbd8b494863567"
-  }
-
-"resource_id" will be refered to query alarm and will not be check permission
-and belonging of project.
-
-Security impact
----------------
-
-None
-
-Pipeline impact
----------------
-
-None
-
-Other end user impact
----------------------
-
-None
-
-Performance/Scalability Impacts
--------------------------------
-
-When Ceilomter received a number of events from other OpenStack services in
-short period, this alarm evaluator can keep working since events are queued in
-a messaging queue system, but it can cause delay of alarm notification to users
-and increase the number of read and write access to alarm database.
-
-"resource_id" can be optional, but restricting it to mandatory could be reduce
-performance impact. If user create "notification" alarm without "resource_id",
-those alarms will be evaluated every time event occurred in the project.
-That may lead new evaluator heavy.
-
-Other deployer impact
----------------------
-
-New service process have to be run.
-
-Developer impact
-----------------
-
-Developers should be aware that events could be notified to end users and avoid
-passing raw infra information to end users, while defining events and traits.
-
-Implementation
-==============
-
-Assignee(s)
------------
-
-Primary assignee:
-  r-mibu
-
-Other contributors:
-  None
-
-Ongoing maintainer:
-  None
-
-Work Items
-----------
-
-* New event-driven alarm evaluator
-
-* Add new alarm type "notification" as well as AlarmNotificationRule
-
-* Add "resource_id" to Alarm model
-
-* Modify existing alarm evaluator to filter out "notification" alarms
-
-* Add new config parameter for alarm request check whether accepting alarms
-  without specifying "resource_id" or not
-
-Future lifecycle
-================
-
-This proposal is key feature to provide information of cloud resources to end
-users in real-time that enables efficient integration with user-side manager
-or Orchestrator, whereas currently those information are considered to be
-consumed by admin side tool or service.
-Based on this change, we will seek orchestrating scenarios including fault
-recovery and add useful event definition as well as additional traits.
-
-Dependencies
-============
-
-None
-
-Testing
-=======
-
-New unit/scenario tests are required for this change.
-
-Documentation Impact
-====================
-
-* Proposed evaluator will be described in the developer document.
-
-* New alarm type and how to use will be explained in user guide.
-
-References
-==========
-
-* OPNFV Doctor project: https://wiki.opnfv.org/doctor
-
-* Blueprint "Alarm type based on notification":
-  https://blueprints.launchpad.net/ceilometer/+spec/alarm-on-notification