- Edge-computing - lists.opendev.org

Weekly call tomorrow in the US/Europe friendly slot
by Ildiko Vancsa 06 Jan '19

06 Jan '19

Hi, It is a friendly reminder that we have the next weekly call tomorrow at 7am Pacific / 1500 UTC. Please find the meeting details here: https://wiki.openstack.org/wiki/Edge_Computing_Group#Meetings The calendar file is available from this link: https://www.openstack.org/assets/edge/OSF-Edge-Computing-Group-Weekly-Calls… Please let me know if you have any questions. Thanks and Best Regards, Ildikó

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Meeting reminder
by Ildiko Vancsa 02 Jan '19

02 Jan '19

Hi, It is a friendly reminder that this week we have the APAC-friendly time slot for the weekly calls: https://wiki.openstack.org/wiki/Edge_Computing_Group#Meetings See you on the call tomorrow! Thanks and Best Regards, Ildikó

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Zero Touch Provisioning
by Curtis 21 Dec '18

21 Dec '18

Hi All, I forgot about this list and sent a message about Zero Touch Provisioning (ZTP) to the openstack-discuss list [0]. I'm just wondering if there has been any discussion or documentation of ZTP in the edge computing group, and if so pointers would be great. :) If not I may try to add the use case to the edge computing use cases. I will try to attend the edge computing meetings in the new year. Thanks, Curtis [0]: http://lists.openstack.org/pipermail/openstack-discuss/2018-December/001173…

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Mapping everything
by Csatari, Gergely (Nokia - HU/Budapest) 21 Dec '18

21 Dec '18

Hi, Here I send the mapping wiki and waiting for your comments: https://wiki.openstack.org/wiki/MappingOfUseCasesFeaturesRequirementsAndUse… Br, Gerg0

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Use cases mapping to MVP architectures - FEEDBACK NEEDED
by Ildiko Vancsa 20 Dec '18

20 Dec '18

Hi, Hereby I would like to forward you the mapping of use cases to MVP architectures that Gergely Csatari is working on. Please provide feedback on this work item to make sure we are considering all the aspects. Thanks and Best Regards, Gergely and Ildikó In the Edge Coputing Group we are collecting use cases for the edge cloud infrastructure. They are recorded in our wiki [1] and they describe high level scenarios when an edge cloud infrastructure would be needed. During the second Denver PTG discussions we drafted two MVP architectures what we could build from the current functionality of OpenStack with some slight modifications [2]. These are based on the work of James and his team from Oath. We differentiate between a distributed [3] and a centralized [4] control plane architecture scenarios. In one of the Berlin Forum sessions we were asked to map the MVP architecture scenarios to the use cases so I made an initial mapping and now I’m looking for feedback. This mapping only means, that the listed use case can be implemented using the MVP architecture scenarios. It should be noted, that none of the MVP architecture scenarios provide solution for edge cloud infrastructure upgrade or centralized management. Here I list the use cases and the mapped architecture scenarios: Mobile service provider 5G/4G virtual RAN deployment and Edge Cloud B2B2X [5] Both distributed [3] and centralized [4] Universal customer premise equipment (uCPE) for Enterprise Network Services[6] Both distributed [3] and centralized [4] Unmanned Aircraft Systems (Drones) [7] None - assuming that this Use Case requires a Small Edge instance which can work in case of a network partitioning event Cloud Storage Gateway - Storage at the Edge [8] None - assuming that this Use Case requires a Small Edge instance which can work in case of a network partitioning event Open Caching - stream/store data at the edge [9] Both distributed [3] and centralized [4] Smart City as Software-Defined closed-loop system [10] The use case is not complete enough to figure out Augmented Reality -- Sony Gaming Network [11] None - assuming that this Use Case requires a Small Edge instance which can work in case of a network partitioning event Analytics/control at the edge [12] The use case is not complete enough to figure out Manage retail chains - chick-fil-a [13] The use case is not complete enough to figure out At this moment chick-fil-a uses a different Kubernetes cluster in every edge location and they manage them using Git [14] Smart Home [15] None - assuming that this Use Case requires a Small Edge instance which can work in case of a network partitioning event Data Collection - Smart cooler/cold chain tracking [16] None - assuming that this Use Case requires a Small Edge instance which can work in case of a network partitioning event VPN Gateway Service Delivery [17] The use case is not complete enough to figure out [1]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases [2]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Edge_Reference_Archite… [3]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Edge_Reference_Archite… [4]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Edge_Reference_Archite… [5]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Mobile_servi…. [6]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Universal_cu… [7]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Unmanned_Air… [8]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Cloud_Storag… [9]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Open_Caching… [10]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Smart_City_a… [11]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Augmented_Re… [12]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Analytics.2F… [13]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Manage_retai… [14]: https://schd.ws/hosted_files/kccna18/34/GitOps.pdf [15]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Smart_Home [16]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#Data_Collect… [17]: https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases#VPN_Gateway_…

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Berlin Summit recap on Edge
by Ildiko Vancsa 10 Dec '18

10 Dec '18

Hi, I hope those of you who came to the Berlin Summit had a great event, a good trip home and got some rest, caught up with work and those who went on vacation had a great time. Hereby I would like to give a short summary to everyone either as a reminder or as a package to help you catch up briefly with what happened around edge in Berlin. As you most probably know we had a dedicated track for Edge Computing with numerous presentations and panel discussions at the conference which were recorded. If you would like to catch up or see some sessions again please visit the OpenStack website[1] for the videos. In parallel to the conference we were having the Forum taking place with 40-minute-long working sessions for developers, operators and users to meet and discuss new requirements, challenges and pain points to address. We had quite a few sessions around edge which you’ll find a brief recap of here. I would like to start with the OSF Edge Computing Group also Edge WG’s sessions, if you are new to the activities of this group you may want to read my notes[2] on the Denver PTG to catch up on the community’s and the group's work on defining reference architectures for edge use cases. During the Forum we continued to discuss the Minimum Viable Product (MVP) architecture topic[3] that we’ve started at the last PTG. As the group and attendees had limited amount of time available for the topic we concluded on some basics and agreed on action items to follow up on. The session attendees agreed that the MVP architecture is an important first step and we will keep its scope limited to the current OpenStack services listed on the wiki capturing the details[4]. While there is interest in adding further services such as Ironic or Qinling we will discuss those in this context in upcoming phases. The Edge WG is actively working on capturing edge computing use cases in order to understand better the requirements and to work together with OpenStack and StarlingX projects on design and implementation work based the input the groups has been collecting[5]. We had a session about use cases[6] to identify which are the ones the group should focus on with immediate actions where we got vRAN and edge cloud, uCPE and industrial control with most interest in the room to work on. The group is actively working on the map the MVP architecture options to the use cases identified by the group and to get more details on the ones we identified during the Forum session. If you are interested in participating in these activities please see the details[7] of the group’s weekly meetings. While the MVP architecture work is focusing on a minimalistic view to provide a reference architecture with the covered services prepared for edge use cases there is work ongoing in parallel in several OpenStack projects. You can find notes on the Forum etherpads[8][9][10] on the progress of projects such as Cinder, Ironic, Kolla-Ansible and TripleO. The general consensus of the project discussions were that the services are in a good shape when edge requirements are concerned and there is a good view on the way forward like improving availability zone functionality or remote management of bare metal nodes. With all the work ongoing in the projects as well as in the Edge WG the expectation is that we will be able to easily move to the next phases with the MVP architectures work when the working group is ready. Both the group and the projects are looking for contributors for both identifying further requirements, use cases or do the implementation and testing work. Testing is an area that will be crucial for edge and we are looking into both cross-project and cross-community collaborations for that for instance with OPNFV and Akraino. While we didn’t have a Keystone specific Forum session for edge this time a small group of people came together to discuss next steps with federation. We are converging towards some generic feature additions to Keystone based on the Athenz plugin from Oath. You can read a Keystone summary[11] for the week in Berlin from Lance Bragsad including plans related to edge. We had a couple of sessions at the Summit about StarlingX both in the conference part as well as the Forum. You can check out videos such as the project update[12] and other relevant sessions[13] among the Summit videos. As the StarlingX community is working closely with the Edge WG as well as the relevant OpenStack project teams at the Forum we had sessions that were focusing on some specific items for planning future work and understanding requirements better for the project. The team had a session on IoT[14] to talk about the list of devices to consider and the requirements systems need to address in this space. The session also identified a collaboration option between StarlingX, IoTronic[15] and Ironic when it comes to realizing and testing use cases. With putting more emphasis on containers at the edge the team also had a session on containerized application requirements[16] with a focus on Kubernetes clusters. During the session we talked about areas like container networking, multi-tenancy, persistent storage and a few more to see what options we have for them and what is missing today to have the particular area covered. The StarlingX community is focusing more on containerization in the upcoming releases for which the feedback and ideas during the session are very important to have. One more session to mention is the ‘Ask me anything about StarlingX’ one at the Forum where experts from the community offered help in general to people who are new and/or have questions about the project. The session was well attended and questions were focusing more on the practical angles like footprint or memory consumption and a few more specific questions that were beyond generic interest and overview of the project. These were the activities in high level around edge without going into too much detail on either of the topics as that would be a way longer e-mail. :) I hope you found interesting topics and useful pointers for more information to catch up on. If you would like to participate in these activities you can dial-in to the Edge WG weekly calls[17] or weekly Use cases calls[18] or check the StarlingX sub-project team calls[19] and further material on the website[20] about how to contribute or jump on IRC for OpenStack project team meetings[21] in the area of your interest. Please let me know if you have any questions to either of the above items. :) Thanks and Best Regards, Ildikó (IRC: ildikov) [1] https://www.openstack.org/videos/ [2] http://lists.openstack.org/pipermail/edge-computing/2018-September/000432.h… [3] https://etherpad.openstack.org/p/BER-MVP-architecture-for-edge [4] https://wiki.openstack.org/wiki/Edge_Computing_Group/Edge_Reference_Archite… [5] https://wiki.openstack.org/wiki/Edge_Computing_Group/Use_Cases [6] https://etherpad.openstack.org/p/BER-edge-use-cases-and-requirements [7] https://wiki.openstack.org/wiki/Edge_Computing_Group [8] https://etherpad.openstack.org/p/BER-Cinder_at_the_Edge [9] https://etherpad.openstack.org/p/BER-ironic-edge [10] https://etherpad.openstack.org/p/BER-tripleo-undercloud-edge [11] https://www.lbragstad.com/blog/openstack-summit-berlin-recap [12] https://www.openstack.org/videos/berlin-2018/starlingx-project-update-6-mon… [13] https://www.openstack.org/videos/search?search=starlingx [14] https://etherpad.openstack.org/p/BER-integrating-iot-device-mgmt-with-edge-… [15] https://github.com/openstack/iotronic [16] https://etherpad.openstack.org/p/BER-containerized-app-reqmts-on-kubernetes… [17] https://www.openstack.org/assets/edge/OSF-Edge-Computing-Group-Weekly-Calls… [18] https://www.openstack.org/assets/edge/OSF-Edge-WG-Use-Cases-Weekly-Calls.ics [19] https://wiki.openstack.org/wiki/Starlingx/Meetings [20] https://www.starlingx.io [21] http://eavesdrop.openstack.org

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Minutes of this weeks meeting
by Csatari, Gergely (Nokia - HU/Budapest) 06 Dec '18

06 Dec '18

Hi, Are here: http://eavesdrop.openstack.org/meetings/weekly_edge_computing_group_call/20… Br, Gerg0

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Meeting reminder
by Ildiko Vancsa 05 Dec '18

05 Dec '18

Hi, It is a friendly reminder that we have the weekly call in the APAC-friendly time slot at 0700UTC today which is in less than 45 minutes. Meeting details are here: https://wiki.openstack.org/wiki/Edge_Computing_Group#Meetings Thanks, Ildikó

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[all][tc][Edge][FEMDC][tripleo][akraino][starlingx] Chronicles Of A Causal Consistency
by Bogdan Dobrelya 05 Dec '18

05 Dec '18

Background. Fact 0. Edge MVP reference architectures are limited to a single control plane that uses a central/global data backend by usual for boring Cloud computing meanings. Fact 1. Edge clouds in Fog computing world are WAN-distributed. Far and middle-level tiers may be communicating to their control planes over high-latency (~50/100ms or more) connections. Fact 2. Post-MVP phases [0] of future reference architectures for Edge imply high autonomity of edge sites (aka cloudlets [1][2]), which is having multiple control planes always maintaining CRUD operations locally and replicating shared state asynchronously, only when "uplinks" are available, if available at all. Fact 3. Distributed Compute Node in the post-MVP phases represents a multi-tiered star topology with middle-layer control planes aggregating thousands of computes at far edge sites and serving CRUD operations for those locally and fully autonomous to upper aggregation edge layers [3]. Those in turn might be aggregating tens of thousands of computes via tens/hundreds of such middle layers. And finally, there may be a central site or a few that want some data and metrics from all of the aggregation edge layers under its control, or pushing deployment configuration down hill through all of the layers. Reality check. That said, the given facts 1-3 contradict to strongly consistent data backends supported in today OpenStack (oslo.db), or Kubernetes as well. That means that neither of two IaaS/PaaS solutions is ready for future post-MVP phases of Edge as of yet. That also means that both will need a new, weaker consistent, data backend to pass the future reality check. If you're interested in formal proves of that claim, please see for sources [4][5][6][7][8]. A [tl;dr] of those: a) It is known that causal consistency is the best suitable for high-latency, high-scale and highly dynamic nature of membership in clusters b) "it it is significantly harder to implement causal consistency than eventual consistency. This explains the fact why there is not even a single commercial database system that uses causal consistency" [6] Challenge accepted! What can we as OpenStack community, joined the Kubernetes/OSF/CNCF communities perhaps, for the bright Edge future can do to make things passing that reality check? It's time to start thinking off it early, before we are to face the post-MVP phases for Edge, IMO. That is also something being discussed in the neighbour topic [9] and that I'm also trying to position as a challenge in that very high-level draft paper [10]. As of potential steps on the way of implementing/adopting such a causal data backend in OpenStack at least, we should start looking into the papers, like [4][5][6][7][8] (or even [11], why not having a FS for that?), and probably more of it as a "theoretical background". [0] https://wiki.openstack.org/w/index.php?title=OpenStack_Edge_Discussions_Dub… [1] https://github.com/State-of-the-Edge/glossary/blob/master/edge-glossary.md#… [2] https://en.wikipedia.org/wiki/Cloudlet [3] https://github.com/State-of-the-Edge/glossary/blob/master/edge-glossary.md#… [4] http://www.bailis.org/papers/bolton-sigmod2013.pdf [5] http://www.cs.princeton.edu/~wlloyd/papers/eiger-nsdi13.pdf [6] https://www.ronpub.com/OJDB_2015v2i1n02_Elbushra.pdf [7] http://www.cs.cornell.edu/lorenzo/papers/cac-tr.pdf [8] https://www.cs.cmu.edu/~dga/papers/cops-sosp2011.pdf [9] http://lists.openstack.org/pipermail/openstack-discuss/2018-December/000492… [10] https://github.com/bogdando/papers-ieee/blob/master/ICFC-2019/LaTeX/positio… [11] http://rainbowfs.lip6.fr/data/RainbowFS-2016-04-12.pdf -- Best regards, Bogdan Dobrelya, Irc #bogdando

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Storyboard project for the Edge Group
by Ildiko Vancsa 04 Dec '18

04 Dec '18

Hi, As we discussed it on one of the weekly calls there is a desire to register our use stories in Storyboard and track related items there. I created a project[1] which also comes with a repository[2] that we can utilize whenever we would like to or just leave empty. I added our currently existing user stories[3] to the project already. Please feel free to add comments or edits to move forward towards defining and achieve our goals towards edge-ready infrastructure services. Please let me know if you have any questions. Thanks and Best Regards, Ildikó [1] https://storyboard.openstack.org/#!/project/openstack/edge-computing-group [2] https://github.com/openstack/edge-computing-group [3] https://wiki.openstack.org/wiki/Edge_Computing_Group/Edge_Reference_Archite…

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