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Summit 16: Open-O Mini-Summit - VF Event Streaming Project Proposal
1.
© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. VF (Virtual Functions) Event Streaming (VES) Project Proposal June 13th, 2016 For Questions, Please contact: Alok Gupta +1 732-420-7007; ag1367@att.com 1
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. VES Project Proposal 2 Objective Enable significant reduction in effort to develop and integrate VNF telemetry- related data into automated VNF management systems, by promoting convergence to a common event stream format and collection system. Background Telemetry data formats and semantics / expected actions by management systems vary widely For Fault Events, vendors use SNMP, 3GPP Corba, MTOSI, OSSJ etc, and semantics can differ (e.g. Critical Severity as “1” or “5”) For Measurement events (KPI/KCI), vendors deliver CSV or XML based files, with varying internal data formats. This variance complicates NF integration into management systems Scope/Deliverables A VNF Event Stream (VES) Common Event Data Model Consisting of a Header and an Event Specific Block, with additional Name/Value fields for extensibility OPNFV support for the VES Common Event Data Model A VES Agent that can collect the VNF Event Stream data from the VNF and deliver it to the VES Collector A VES Collector that can consume the VNF Event Stream data, and store the data in a database backend VES plugins for integration with OpenStack infrastructure services such as Monasca and Vitrage Documentation and test support (e.g. reference event data) A plan for upstreaming the project code
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property.3 Problem Statement / Fault Management (FM) Interface Comparison Categories SNMP 3GPP Corba MTOSI via JMS MTOSI via REST over HTTPS (JSON) GeneralAttributes - There are 3 current version of SNMP. - Devices are not compliantin all 3 versions. - SNMP V3 handling requires special adapter due to increased security - SNMP is connectionless, except for SNMPv3 - No assurance of delivery - No resynch functionality - Corba is connection oriented - assurance of delivery - resynch functionality - Corba has sets of actions - Corba payload provides more details in less traffic volume - JMS is Connection oriented - assurance of delivery - resynch functionality - MOTSI has a sets of actions - MTOSI payload provides more details in less traffic volume -service providing organizedaccess to stateless resources -connectionless -stateless Availability Agents and processes are widely available ReasonableSupport Mixed Mixed Reuseability Low High High High Exapndability Low High High High Authenticaltion-Security SNMP V3 over SSL High-SecurityIRP High - SSL High – SSL Platform Dependency Dependent Dependent Independent Independent SOA Interface and Data event No Yes Yes Yes Implementation Vendor Dependednt Vendor Independent Vendor Independent Vendor Independent CLI Command Standard Standard Standard Standard Payload High Constant constant Constant MultipleDevice Support No Yes Yes Yes Multi-VendorSupport No Yes Yes Yes Sensititivityto new Alarm Data High Low Low Low point-to-Point/Multipoint p-t-p p-t-p deploy muiltplepub-sub to avoid bottleneck Pub-Sub latency <1ms <10ms <10ms Server/Code deployment Difficult Java driven Independent interfacingto diffenet Apps Difficult Easy Easy Output SNMP 3GPP XML/JSON XML/JSON Cost of Wonership adapter 49 7 2 line of codes 500000 6500 800 EquipmentType Supported 50 20 5
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Common Event Data Model: Fault, Heartbeat, Performance, Syslogs, Other, Usage, Signaling, Security, others Common Header and Domain Specific Event Additional name value pair fields for extensibility Profile Driven Event Data Needed at time of VNF Instantiated and Data Profile Support to change event streaming by VNF and Collector/Listener: Collector Address: IP, Port Authentication Data: User Name/Password Data Profile: Event Type (Fault (Custom (Full, c1, c2..) or Programmable)) VES – Common Event Data Model - Dynamic Pre-Defined: No API Overhead Defined Real Time via API Header Domain VNF Attribute Timing Fault Severity Source Specific Problem.. Name/Vlaue Measurement KPI KCI VF Scaling….... Name/Vlaue SysLogs Facility Data Proc…... Name/Vlaue MobileFlow RptEndPt OthEndPt Flow…... Name/Vlaue Other Name/Vlaue Usage, Config... ….. Other: Signaling, Internal ...TBD Name/Vlaue 4
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. In scope: • Green/solid interfaces • Agent/Collector interface support library and reference implementation • OpenStack component plugins Agent code is embedded in VNFCs, Virtualization Hosts, and Bare Metal Hosts Agents / VNFCs can also deliver directly to OpenStack Plugins (not shown) VES Architectural View OpenStack Application Controller SDNC Bare Metal Host Virtualization Host(s) VES Collector VES Agent VNFC VES Agent Plugins Monasca Vitrage Congress etc Collector can integrate with other OpenStack Collectors Other Management Functions Message Bus Direct (REST) 5
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. VES and Other OPNFV Projects VES is a standardized event framework that can be used by Open Stack, OPNFV projects OPNFV projects that potentially benefit from the VES project Fault Management (Doctor) Virtualized Infrastructure Deployment Policies (Copper) High Availability for OPNFV (Availability) Data Collection for Failure Prediction (Prediction) Audit (Inspector) Fault localization (RCA, Pinpoint ) Service Function Chaining (sfc) Moon Security Management OpenStack projects that potentially benefit from the VES project Monasca: a monitoring-agent plugin for VES can provide a new/converged source for Monasca events Vitrage: similar to Monasca can provide new data for the Graph DB of Vitrage Congress: Congress data source drivers can integrate additional data from Monasca, Vitrage, or directly 6
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. 1.Use cases that illustrate the value, reuse and increased efficiency/cost reduction 2.Software code behind: Application Interface Document Library Capabilities Demo Reference VNF Event Library Integration AT&T’s Operational Experience using the Proposed Framework 7
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Use Case Results Once development is done for the first VNF, the subsequent VNF can be supported via Configuration changes and/or Policy Identification and Enforcement, resulting in over 80% cost and time savings Use Case and Results Collector Event Processor Correlation Policy Enforcement/ Automation Data Bus Fault Event / Clear Ticketing System Scenario 3: High CPU Utilization Published an event for service orchestrator to create a New VF Scenario 2: Payload Processor Failure Publish an event to Restart VM Scenario 1: False Alarm Scenario 2: VM Failure Scenario 3: Scaling Alert Scenario 1: Failure Event, Notification PM (Threshold Crossing Alert) Ticket Generated, Updated and Closed 8
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Thank You © 2016 AT&T Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. 9
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Hosted in the AT&T Research github site: http://github.com/att • evel-library • evel-test-collector • evel-reporting-reference-vnf To be contributed to the VES project under the Apache 2.0 license ECOMP Vendor Event Listener code on Github 10
11.
© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Purpose A test harness to play the role of the ECOMP Vendor Event Listener in environments where access to ECOMP isn’t available Capabilities Catches JSON events Checks the events are valid against the defined schema Checks the authentication credentials provided “Pretty prints” the event for desk-checking Use-cases Testing VNFs during development by vendors Familiarization with the API Packaging GitHub repository with detailed documentation Source code tree for development, running in Windows environment etc (Python) VES Collector 11
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Purpose A simple VNF which provides a Web UI to a local database of event definitions Capabilities The user can define arbitrarily complex events The user can generate single-shot and repeated (scheduled) events Use-cases Testing ECOMP Familiarization with API Mocking-up events as part of designing a new VNF Packaging GitHub repository with detailed documentation Source code tree for development (Python, Django, SQLite) Reference VF 12
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Reference VF 13
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Latest Python 2.7.x https://www.python.org/downloads/ Check the option “Add Python to path” But you may have to edit the Path environment variable to “Apply” the changes – or just reboot! Django pip install Django JSON Schema pip install jsonschema Initialize the VNF database for first use …go-scriptsinitialize-webserver.bat Start the app Test collector …go-scriptsgo-collector.bat Backend …go-scriptsgo-backend.bat Webserver …go-scriptsgo-webserver.bat Ref VF Event Demo 14
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Point your favorite web-browser at: 127.0.0.1:8000 Generate an event Fault Measurement Mobile Flow Syslog Check that the Test Collector reports its safe receipt… …and try to work out why not if it doesn’t! Ref VF Event Demo – Contd. 15
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Purpose A C library to simplify adding ECOMP event reporting to VNFs Capabilities Handles all the JSON encoding Handles all the HTTP(S) transport Provides an asynchronous API to the VNF Generates syslog events for delivery failures etc Use-cases VNF development Familiarization with the API if implementing an independent event-reporting mechanism Packaging Source code tree for development gcc toolchain VF Event Library 16
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Handles all the JSON encoding Trivial JSON encoder “hand-built” into library Offloads “non-application” fields (e.g. VM Name and UUID) from the VNF application code Optional fields are omitted where possible Handles all the HTTP(S) transport Uses cURL library - https://curl.haxx.se/libcurl/ Provides an asynchronous API to the VNF Implements a ring-buffer between the application API and the HTTP client to the JSON API Offloads waiting for responses Generates syslog events for delivery failures etc Last-ditch record of what was going on for post-mortem analysis VF Event Library Capabilities 17
18.
© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Initialize Per client process Must be single-threaded at this point Generate events Create an event (Measurement, Fault or Report) Provide mandatory scalar event parameters to factory function Add parameters Optional scalars Mandatory vectors Hand-off to the library Application code relinquishes all responsibility (e.g. freeing memory) at this point Shutdown Swift and brutal! The ring-buffer is not depleted Cleans up all memory & the cURL library VF Event Library Usage 18
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. VF Event Library Initialize 19 /***************************************************************************/ /* Initialize the EVEL interface. */ /***************************************************************************/ if (evel_initialize(api_fqdn, api_port, api_path, api_topic, api_secure, "Alice", "This isn't very secure!", EVEL_SOURCE_VIRTUAL_MACHINE, "EVEL demo client", verbose_mode)) { fprintf(stderr, "Failed to initialize the EVEL library!!!"); exit(-1); } else { EVEL_INFO("Initialization completed"); }
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© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. VF Event Library Create Event 20 /***************************************************************************/ /* Create a new Fault event and set optional parameters. */ /***************************************************************************/ fault = evel_new_fault("My alarm condition", "It broke very badly", EVEL_PRIORITY_NORMAL, EVEL_SEVERITY_MAJOR); if (fault != NULL) { evel_fault_type_set(fault, "Bad things happen..."); evel_fault_interface_set(fault, "My Interface Card"); evel_fault_addl_info_add(fault, "name1", "value1"); evel_fault_addl_info_add(fault, "name2", "value2"); /***********************************************************************/ /* Post the event to the Vendor Event Listener. */ /***********************************************************************/ evel_rc = evel_post_event((EVENT_HEADER *)fault); if (evel_rc != EVEL_SUCCESS) { EVEL_ERROR("Post failed %d (%s)", evel_rc, evel_error_string()); } } else { EVEL_ERROR("New fault failed"); }
21.
© 2016 AT&T
Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. VF Event Library Termination 21 /***************************************************************************/ /* Shutdown the library. */ /***************************************************************************/ evel_terminate();
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