Overview
Edge clouds are located at close proximity to end users. Typical deployment locations are within the access networks or at the boundary of access networks. In some deployments, they can be within the customer premises (e.g., home; enterprise; factory floor; vehicles including trains, planes, private cars). The core thrusts of edge clouds for applications are low latency, high bandwidth, and trusted computing and storage. Various edge cloud architectures have already emerged from different communities and potentially can be plugged into the ONAP architecture for service orchestration. The group analyzes the orchestration requirements of services over various edge clouds and how these requirements impact ONAP components in terms of data collection, processing, policy management, resource management, control loop models, security, as well as application & network function deployment and control.
ONAPARC-63 - Getting issue details... STATUS
Problem Statement : Edge Scoping
- Edge Cloud Domain = collection of Edge Cloud Nodes in a Domain
- Where/What is Edge
- See Figure 3 in ATT-Edge_Compute_White_Paper FINAL2.pdf
- Edge = vCPE at customer Premises
- Edge = Cell Tower
Edge = Small Central Office (eg., CU for vRAN)
Call Schedule:
Time: 8:00am PT - 9:00am PT
- Day: Every Wednesday
- Zoom: vmware.zoom.us/j/3055973130
List Subscription/Meeting Notification:
WG Coordinators:
Call Notes
| Date | Agenda | Notes | ||||||||||||
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| Apr 06, 2018 |
| ZOOM Recording: GMT20180406-170638_Ramki-Kris_1920x1080.mp4 Meeting Notes:
Agenda to be finalized 24 hrs. before each meeting. Folks are requested to review the contributions and come prepared with questions. | ||||||||||||
| Apr 09, 2018 |
| ZOOM Recording: zoom_0.mp4 Meeting Notes:
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| Apr 16, 2018 |
| Zoom Recording: zoom_0.mp4 Meeting Notes: What diagram to add in Edge Scoping wiki? - item 2.C.I from last session - see gliffy diagram in Edge Scoping page 1 and 2: Vimal provided review of table in Edge Scoping page for application classification. 3: updated gliffy diagram to reflect input from Vimal's diagram 4: Clarified demarcation between Cloud Provider and ONAP offload in slides. Also, suggested we use gliffy in wiki as one diagram to work on. | ||||||||||||
| Apr 23, 2018 | Review updated Gliffy Arch diagram and Notes below gliffy (also, need to update gliffy with apps locations) Review Infrastructure Profile descriptions from Srinivasa Addepalli and Vimal Begwani TBD - Review of MEC_Apps_ONS2018_Rev1.1.pdf by Prakash Ramchandran | 1) Reviewed gliffy, notes below gliffy, and, applications table
Yoav Kluger: why limit to 500ms/use case 1?
Yoav Kluger - for e2e requirements, need to consider using policies vs service design Parviz Yegani - for RT vs NRT: need tight coordination between domains?
2) Srinivasa Addepalli reviewed Infrastructure Profiles in Edge Scoping page
3) buyukkoc briefly reviewed Edge Automationissues.pptx - need to discuss more | ||||||||||||
| April 30th, 2018 | Review updated Gliffy Arch diagram and Notes below gliffy (also, need to update gliffy with apps locations) Review Infrastructure Profile descriptions summarized Vimal Begwani Review of MEC_Apps_ONS2018_Rev1.1.pdf by Prakash Ramchandran / Prem Sankar | Review of MEC_Apps_ONS2018_Rev1.1.pdf by Prakash Ramchandran / Prem Sankar
Reviewed Infrastructure Profile summary and Gliffy Diagram in Edge Scoping
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| May 7th, 2018 | Hierarchical DCAE - Lusheng Ji, Vijay Kumar High level review of Multi-Cloud use cases - Distributed Edge Cloud Infrastructure Enablement in ONAP |
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| May 14th, 2018 | 1) Evgeniy Zhukov et al., Netcracker – AR/VR Use Case:
2) Complete architecture discussion on single vs multiple ONAP instances, i.e. ONAP central vs ONAP edge. | 1) Evgeniy Zhukov et al., Netcracker – AR/VR Use Case - Edge cloud as ‘black box’ with interfaces (UNI/NNI in DP, NBI in mgmt plane), with control plane having slice manager/controller/MEC-manager/etc.. - raghu/ clarified that CP’s internal ‘control/mgmt’ plane is not discussed….although there are onap components which are not relevant for edge cloud provider - Tom Tofigh - functional arch has useful distinction between pack/app processing so can consider specifying acceleration in edge for compute-intensive/storage-intensive/memory-intensive….but, capture in ONAP’s IaaS/PaaS API? object vs packet switching? Analytics on bigger address space? - animation to change network topology in order to support AR/VR meeting requirements, etc. - problem statement need clarity, ie., AR/VR app will make sure or Edge-domain provider or ONAP-provider? So, upcoming telecom model shown with 3 entities: Bus App / Slice Provider / Infra Provider - Parviz: who is responsible for AR SLA? ONAP needs to coordinate with Edge Provider? need to clarify relationship in context of our ONAP-SP <> Edge Cloud Provider - Tom: Slice app provider will manage the slice to meet SLA, etc. - Raghu: maybe good to bring it to 5G-use case calls? Ramki suggests this could be about ‘application slice’. Parviz asks if ONAP arch needs to change even with MEC manager? maybe the key point is SLA for e2e and how onap is going to split between multiple domains like edge clouds, etc. 2) Complete architecture discussion on single vs multiple ONAP instances, i.e. ONAP central vs ONAP edge. - triggered arch discussions on separate ONAP instance - Srini: need to generalize term to ‘automation offload platform’? - yoav: need to understand whether ‘separate onap instance’, ie., may not want SO, etc.? may not want it to be ‘MVP’ since onap-central is MVP+. - Gil Hellmann: minimum services/functionality at edge needed…vs using a term like MVP. maybe limited by power/space, etc. Also, even without onap functions, those edge nodes need connectivity. - shankar Narayanan: MVP - similar classification of workflows needed? sequence diagram started…but, need to work on. map the workflows that are part of the functional deliverables in R1/R2 and mapping to the edge. Also, scope of edge to meet S3P, eg., violating/meeting? - chaker: more than one central onap? eg., VF OpCos - given service context, there is one ONAP-central SP, with rest are ‘cloud providers’, etc. Need to add such an example diagram. - Yoav: ONAP-edge need to talk to multiple onap-cental….but, we need to start small. so, we don’t restrict to 1:1 for onap-edge to onap-central. within same SP, there can be inventory-sync, etc. For casablanca, we may start with 1:1 - shankar N: sharing of inventory - depends on what workflow is partitioned between central/edge. This might drive how we scope MVP. 3) Finalize minimum viable needed ONAP edge for Casablanca - ramki showed bullets in ‘edge scoping’ page - raghu suggested using shankar’s suggestion on workflows to decide additional components, eg., if needing state change, will be a request back to Cloud Provider or use a SDN-C for the ‘slice’ to change networking state, etc. - Parviz: need closed loop? so, clamp, policy, etc.? - need top down steps such as (a) what state changes, (b) what workflows, and, (c) what onap components. - VNF —> VES Collector —> sub-function of DCAE, ie., look up policy and which topic, action on which topic, pre-configured rules. - Parviz: IoT Hub? yes, architecture allows this. Also, app profiles includes cases when onap-managed or non-managed | ||||||||||||
| May 21st, 2018 | 1) Preparation for Chris Donley's OpenStack key note which includes few slides on ONAP Edge Cloud – plan to list participant company logos. Chris may use some slides from the latest TSC update deck - ONAP-edge-automation-wg-tsc-update-05-10-2018.pptx 2) Finalize minimum viable needed ONAP edge for Casablanca | 1) Ramki: Announced Preparation for Chris Donley's OpenStack key note which includes few slides on ONAP Edge Cloud; Interested Participants to send their company logos by tomorrow morning PST. 2) review MVP - Sekar: what is an ‘instance’? confusion as to why call instance when subset of onap components
- Pasi: time sensitive events then you have to place close enough, etc. As fyi, Akraino discussions had at least 4 presentations mentioning need for some components to be based on time sensitive event management. Now, we don’t have VNFM, for example, to do LCM of VNFs. For example, failover management might need a closed loop.
- Pasi: closed loop requires VNFM/controller in edge domain (?) - Pasi: app profile table is missing even smaller timescales such as RAN fronthaul - Raghu: clarified that most of SLS for infra would be part of IaaS request, eg., link, server failure, etc. - Pasi: to put together slides for discussion be app profile and closed loop to decide on additional onap-edge components | ||||||||||||
| May 23 | Arch Committee Discussion - Casablanca Architecture Planning Meeting
| Chris Donley used Edge Scoping page to briefly update folks on state of work - app profiles, infra profiles, onap hierarchy, edge domain, etc.. Following were some discussion points:
Chris Donley noted the plan for review during March 29th arch call. Related discussion during VNF onboarding slot when discussing 'external VNFM'
Related discussion during OOM slot - federated vs distributed K8s cluster for geo redudancy
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May 29 (vs May 28 since Memorial Day Holiday in USA) |
Related Discussions - Reviewed updated gliffy for arch to ensure folks had consistent view of the problem statement, i.e., onap-central vs onap-edge for 'blue SP'. Also, edge CP domain is a black box from blue SP perspective. | |||||||||||||
| June 4 |
Note: M1 deadline is June 28 - so 4 more calls in June
| Ramki reviewed option A/B/C for MVP - chaker: option A - no onap? context? used arch gliffy to clarify ‘green CP’ to do stuff without any ‘blue onap’ stuff - dominic: what about other components needed by DCAE? depends on collecting/reporting state vs changing state - vijay: helm vs blueprint (cloudily) approach to OOM deployment of edge dcae? - chaker: edge cloud is where DCAE can run - chaker: is this work about (a) automation of edge, or (b) using onap-edge in an edge domain? - chaker: brainstorm in beijing a bit more on the problem - chaker: onap today - 100 VMs. / yoav: with OOM, it is much leaner. / yoav: DCAE - “good number of VMs’….other element, can put in “1 VM”. - chaker: are we going to have onap in the edge, or use the edge as part of VIM / ramki: leverage edge CP functionality…but, also bring some onap components if value - yoav: overloading this work with multiple problem statements, eg., distributing onap vs edge computing, etc.. In edge computing, micro services running in edge for which we want to use ONAP. But, distributing ONAP is a different problem. - raghu: reset with background info - context >> multiple problem statements >> etc.. - raghu: use of ‘multi-cloud adapter’ is the plan / reviewed gliffy arch diagram / but, API will be ‘intent’ rather than internal CLI like imperative. However, we can go next step with having some onap-edge as in option B of MVP - Bin Yang: are DMaaP and VES components in edge? yes…depends on app context….and, shown in sequence diagram where “edge CP’ does analysis and provides summary info to onap-central when no onap-edge. - ramki: reviewed different steps in sequence diagram…focusing on ‘red text’. - jack: which onap-central component is responsible for subscribing to topics? ramki gave example of correlation micro service using data and supplying to policy. micro service in onap do not talk to multi-cloud. Need to detail out interactions within ONAP-central. also, format translations between green and blue. - Arash: are we using DMaaP? / raghu: option A - no edge onap, but with option B - dcae with dmaap/ves - Arash: if no onap-edge, Control Loop in onap-central will run as today. No multi-cloud adapter involvement. /ramki: infra analytics example then multi-cloud comes to play. - Arash: if onap-edge, what does onap-central see? external orch or analytics or controller, etc.? if external analytics then not discussed about rules and operations. if ‘external controller’ then current arch committee discussions currently is via sdn-c (if non onap) or via DMaaP (if onap-like)…but, not via multi-cloud adapter (action item: to discuss in arch calls) - Arash: OOM - no runtime at this time. So, this will be huge expansion. - Borislav: OOM is not designed to trigger upon service request. / raghu clarified that OOM is used when new edge domain. Also, sequence diagram for casablanca assumes that infra is set up for OOM to instantiate onap-edge - Arash: need to capture interactions in more detail between edge DCAE and onap-central, eg., plugging in to central DMaaP or multi-cloud or sdn-c/app-c (also discussion with arch committee). / ramki clarified that any closed loop (critical stuff) is done by edge CP without ONAP. - ramki: extend DMaaP across WAN? / arash: may not make sense. So, how do those events make to onap-central. / Borisalv: http/rest interface. - chaker: each edge cloud has a ‘collector’ in onap-central? / Bin Yang: VES in onap-central is similar to current Release A and B. So, better to consider an edge VES/DMaaP? - chaker: extending onap to many edge cloud might be difficult. would be better to let edge cloud to provide summary events to onap-central. / (aside: raghu pointed out term issue - edge cloud vs edge domain) - Dominic: DmaaP has existing capability to either have edge processing or sent to central. / need to discuss. / Chaker: may not be possible to install DMaaP components in edge. / Dominic: consider when possible to have in edge - chaker: if extending DMaaP interface - so, deploy DMaaP client to collect triggers/events, then DMaaP adapter is certified in every cloud like AWS/Azure. / Jack: anything that uses API has to run in any cloud since http-based API. | ||||||||||||
| June 11 |
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| June 18 | Beijing
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| June 25 | Requesting the PTLs and/or key folks from Infrastructure Modelling, OOF, SO, A&AI, Multi-Cloud, DCAE to join the Edge Automation MVP for Casablanca discussion. Edge Automation MVP Link: https://wiki.onap.org/display/DW/Edge+Scoping+MVP+for+Casablanca+-+ONAP+Enhancements | Cloud Region vs Physical DC location info granularity for homing
Terms:
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| July 2 | Casablanca MVP Deep Dive
Anything else? | (draft notes - to be cleaned up) Ramki reviewed policy example. Some Qs discussed
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| July 9 | Casablanca MVP deep dive | |||||||||||||
| July 16th and July 23rd | Meetings Cancelled – Casablanca MVP Deep Dive Discussion with Relevant PTLs for R2 planning | |||||||||||||
| July 30th |
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| August 6th | Casablanca MVP discussion contd. | |||||||||||||
| August 13th | Casablanca MVP discussion contd. | |||||||||||||
| August 20 |
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(additional notes to be updated later) | ||||||||||||
| Aug 27 | ||||||||||||||
| Sept 5 | 1. K8s based Cloud Regions 2. MEC arch ...and overlap with ONAP functional components | |||||||||||||
| Sept 12 | O-RAN update (slides to be posted) | |||||||||||||
| Future Calls | Potential Topics
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hopefully not missing any key comment - if anyone else remembers please comment)