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diff --git a/docs/guides/onap-user/control-loop/index.rst b/docs/guides/onap-user/control-loop/index.rst new file mode 100644 index 000000000..a8e77007c --- /dev/null +++ b/docs/guides/onap-user/control-loop/index.rst @@ -0,0 +1,271 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 +.. International License. http://creativecommons.org/licenses/by/4.0 +.. Copyright 2019 ONAP Contributors. All rights reserved. + +Control Loop Design +=================== +**Goal:** Create and distribute closed-loop models for automating: + * recovery of faults reported by traps or alarms + * capacity management as performance thresholds are crossed + +**Tool:** SDC/DCAE-DS/CLAMP + +**SDC user role:** Designer + +Closed loops use feedback to control and optimize their behavior. +A closed loop can proactively respond to network and service conditions +without human intervention. + +There are different phases to the Closed Loop (CL) design: + + #. Design a closed loop template and associate it to a Service, + the template represents the theoretical flow of the CL. (DCAE-DS/SDC) + + #. generate a deployment artifact that can be ingested by the DCAE, + today it is a "cloudify" blueprint. + + #. Distribute the control loop to CLAMP and DCAE, the csar is distributed + to CLAMP, the blueprint is distributed to both CLAMP and DCAE. (SDC) + #. Submit the closed loop, meaning provision Policy/DCAE with + closed loop data. (CLAMP) + #. Deploy the closed loop, it initiates the deployment of the micro + service on DCAE side (CLAMP) + +*Release 1 (Amsterdam)* includes control loop template designer in Clamp UI. + +*Release 2 (Bejing)* does not include the control loop template designer +in Clamp UI, this is implemented in DCAE-DS. + +**Steps** + + * `Design a Model`_ + * `Configure Collector`_ + * `Configure Alarm Detector`_ + * `Configure Data Analytics Function`_ + * `Configure Policy`_ + * `Distribute the Model`_ + * `Open Loop Design`_ + +Design a Model +-------------- + +.. note:: + When required, contact the DCAE Group (see `Mailing Lists <https://wiki.onap.org/display/DW/Mailing+Lists>`_) to + confirm that a blueprint for the Service has been generated and + is available on DCAE. + +**Prerequisites:** Create and test a VF +(see :ref:`VF Creation and Testing <user-guides-service-design>`). + + #. Create and name a new model + #. Associate a Service with the model + #. Based on the service, provide values for its attributes + #. Select the Resource-VF and Resource-VFC to associate with the model + #. Select one or more locations in the cloud where the + closed loop will be deployed + #. Here is a view of a hypothetical visual design tool + showing loop modeling components: + + |image0| + + #. Use the tool to select and connect components, + thus defining the structure of the model + #. Configure each of the components of the model + + #. `Configure Collector`_ + #. `Configure Alarm Detector`_ + #. `Configure Data Analytics Function`_ + #. `Configure Policy`_ + +Configure Collector +------------------- + +**Prerequisites:** `Design a Model`_. + +Using the modeling tool, assign a message topic to which this +component will subscribe. + +Configure Alarm Detector +------------------------ + +**Prerequisites:** `Design a Model`_. + +Using the modeling tool, configure the fields described in this table: + ++------------+----------------------------+-------------------------------+ +| Field | Values | Description | ++============+============================+===============================+ +| Topic | * DCAE-CL-EVENT | DMAAP message topic to | +| Publishes | * OPEN-DCAE-HIGHLANDPARK- | which the component | +| | EVENT-OUTPUT | subscribes. | ++------------+----------------------------+-------------------------------+ +| Alarm | (Multiple values) | Populated from vendor-provided| +| Condition | | list of alarm names. Stored in| +| | | SDC and retrieved by the | +| | | modeling tool. Alarms differ | +| | | per VNF. | ++------------+----------------------------+-------------------------------+ +| Event | (Multiple values) | Categories of alarms for a VNF| +| Source Type| | .Differs per VNF. | ++------------+----------------------------+-------------------------------+ +| Event | * NORMAL | Severity level of the alarm | +| Severity | * not-NORMAL | that caused the rule to match.| +| | * WARNING | All conditions are exact | +| | * MINOR | matches, except for not-Normal| +| | * MAYOR | , which matches anything | +| | * CRITICAL | except NORMAL. | ++------------+----------------------------+-------------------------------+ + + +Configure Data Analytics Function +--------------------------------- + +**Prerequisites:** `Design a Model`_. + + #. In the model, click the *StringMatch*. + #. Click the *Properties* icon. + #. Configure fields as required (see table). + #. Click *Close*. + ++------------+----------------------------+-------------------------------+ +| Field | Values | Description | ++============+============================+===============================+ +| Topic | * DCAE-CL-EVENT | DMAAP message topic to | +| Publishes | | which the component subscribes| ++------------+----------------------------+-------------------------------+ +| AAI Fields | (Multiple values) | Additional VM-related fields | +| Matching | | that downstream elements such | ++------------+ | as Policy and APPC can use to | +| AAI Field | | take action on the signature. | +| Send | | | +| (Select | | | +| Multiple) | | | ++------------+----------------------------+-------------------------------+ +| Resource- | Integer | Group of string matching rules| +| Group | | that are to be treated | +| | | together. For example, a | +| | | resource group could contain | +| | | two different traps that must | +| | | be received to produce a | +| | | signature, as well as the | +| | | abatement match. | ++------------+----------------------------+-------------------------------+ +| Alarm | (Multiple values) | Populated from vendor-provided| +| Condition | | list of alarm names. Stored in| +| | | SDC and retrieved by the | +| | | modeling tool. Alarms differ | +| | | per VNF. | ++------------+----------------------------+-------------------------------+ +| Event | * NORMAL | Severity level of the alarm | +| Severity | * not-NORMAL | that caused the rule to match.| +| | * WARNING | All conditions are exact | +| | * MINOR | matches, except for not-Normal| +| | * MAYOR | , which matches anything | +| | * CRITICAL | except NORMAL. | ++------------+----------------------------+-------------------------------+ +| Event | (Multiple values) | Categories of alarms for a | +| Source Type| | VNF. Differs per VNF. | ++------------+----------------------------+-------------------------------+ +| Time | Integer | Interval during which multiple| +| Window | | traps must be received in | +| | | order to produce a single | +| | | signature. This value has no | +| | | meaning if only one onset rule| +| | | exists. A value of 0 means an | +| | | unlimited time window. | ++------------+----------------------------+-------------------------------+ +| Age | Integer | Traps older than this limit | +| Limit | | are deemed too stale to be | +| | | meaningful and are not | +| | | processed. | ++------------+----------------------------+-------------------------------+ +| Create CL | * Initial | *Initial:* start a closed | +| Event ID | * Close | loop with a new request ID | +| | | | +| | | *Close:* end an existing | +| | | closed loop (Close) | ++------------+----------------------------+-------------------------------+ +| Create CL | * OnSet | *OnSet:* start a closed loop | +| Event ID | * Abatement | when a condition starts. | +| Output | | Triggered with a new | +| Event Name | | request_id and signature flag | +| | | of *Initial* | +| | | | +| | | *Abatement:* end a closed loop| +| | | when a condition is corrected.| +| | | Triggered with signature flag | +| | | of *Close*. | ++------------+----------------------------+-------------------------------+ + + +Configure Policy +---------------- + +Use this task to configure the operational policy of the closed loop. + +**Prerequisites:** `Design a Model`_. + +Model configuration involves setting the values in this table, +for each of the Rebuild and Migrate recipies in the model. + ++------------+----------------------------+-------------------------------+ +| Field | Values | Description | ++============+============================+===============================+ +| Overall | Integer | Maximum overall time that can | +| Time Limit | | be spent on attempting all | +| | | actions. | ++------------+----------------------------+-------------------------------+ +| Receipe | * Restart | The automated action to be | +| | * Rebuild | triggered on the VM by the | +| | * Migrate | closed loop. | ++------------+----------------------------+-------------------------------+ +| Max Retries| Positive Integer | Number of times this action | +| | | should be attempted before | +| | | failing on MaxRetriesExceeded.| ++------------+----------------------------+-------------------------------+ +| Retry Time | Positive Integer | Maximum amount of time to take| +| Limit | | performing retries before | +| | | failing on TimeLimitExceeded. | ++------------+----------------------------+-------------------------------+ +| Parent | (Selection | Recipe that precedes this one | +| Policy | | in the chain of operations. | +| | | If this is the first action in| +| | | the chain, this field is not | +| | | set. | ++------------+----------------------------+-------------------------------+ +| Parent | * Failure: | Types of results from the | +| Policy | MaxRetriesExceeded | previous action on the chain | +| Conditions | * Failure: | that would cause a transition | +| | TimeLimitExceeded | to this action. | +| | * Failure: Exception | | +| | * Failure: Other | | +| | * Success | | ++------------+----------------------------+-------------------------------+ + + +Distribute the Model +-------------------- + +**Prerequisites:** `Design a Model`_. + +In this step, the user distributes the models to the DCAE and +Policy subsystems of ONAP. + +After a model is uploaded to a VNF, the status icon of the VNF changes +to from "Design" to "Activated" in the ONAP Portal GUI. + +Open Loop Design +---------------- + +Create and distribute open control loops for managing VF faults and +performance after instantiation. + +With open loop control systems, the action(s) taken by the Policy do +not affect the output of the system. + +For information about creating policy using the Policy Designer, +see :ref:`Policy Design <user-guides-service-design>`. + + +.. |image0| image:: media/DesignModel.png + |