A JISC-funded Managing Research Data project

Posts tagged Cloud computing

On Wednesday, we hosted three people from the Open Knowledge Foundation, to discuss the Orbital project and their software, CKAN. It was a very engaging and productive day spent with Peter Murray-Rust (on the Advisory Board of OKFN), Mark Wainwright (community co-ordinator) and Ross Jones (core developer). We asked them at the start of the day to challenge us about our technical work on Orbital so far and I described the day to them as an opportunity to evaluate our work developing the Orbital software so far. We didn’t touch on the other aspects of the Orbital project such as policy development and training for researchers.

To cut to the chase, the Orbital project will be adopting CKAN as the primary platform for further development of the technical infrastrcuture for RDM at Lincoln. This is subject to approval by the Steering Group, but the reasons are compelling in many ways and I am confident that the Steering Group will accept this recommendation. More importantly, the Implementation Plan that was approved by the Steering group and submitted to JISC remains unchanged.

The raw notes from our meeting are available here. Remember these are raw notes written throughout the day, primarily for our own record. They probably mean more to us than they do to you! Thanks to Paul Stainthorp for his fanatical note taking :-)

Here’s the list of attendees and our agenda:

Present

Peter Murray-Rust (OKFN)
Mark Wainwright (OKFN)
Ross Jones (OKFN)
Joss Winn (University of Lincoln, CERD)
Nick Jackson (University of Lincoln, CERD)
Harry Newton (University of Lincoln, CERD)
Jamie Mahoney (University of Lincoln, CERD)
Alex Bilbie (University of Lincoln, ICT services)
Paul Stainthorp (University of Lincoln, Library)

Agenda

09.30 Introductions
10.00 Orbital introduction and context: Student as Producer, LNCD; Orbital bid and pilot project; Discussion of Orbital approach, the data we’re using, user needs etc.
10.30 CKAN introduction and context
11.00 Technical discussion – Orbital
12.00 LUNCH
12.30 Technical discussion – CKAN
13.30 Discussion – should Orbital adopt CKAN?
14.00 data[.lincoln].ac.uk
15.00 Next steps; Opportunities for collaboration/funding?

What is probably of most interest to people reading this are the pros & cons of the Orbital project adopting CKAN. I’ll provide more context further into the post, but here’s a summary copied from our notes:

(more…)

Not research data as such (although it could be the subject of research), but a long and interesting blog post about how Tumblr manages huge amounts of user generated data. It’s interesting not just because of the scale of the task day-to-day, but also because it offers some lessons learned about how to scale up to managing an ingest of several terabytes a day. When we talk about ‘big data’ in the sciences, is it this big? Bigger? How is big science actually managing data on this scale? I really don’t know.

  • 500 million page views a day
  • 15B+ page views month
  • ~20 engineers
  • Peak rate of ~40k requests per second
  • 1+ TB/day into Hadoop cluster
  • Many TB/day into MySQL/HBase/Redis/Memcache
  • Growing at 30% a month
  • ~1000 hardware nodes in production
  • Billions of page visits per month per engineer
  • Posts are about 50GB a day. Follower list updates are about 2.7TB a day.
  • Dashboard runs at a million writes a second, 50K reads a second, and it is growing.

Part of the Orbital project governance is that I report to the university’s Research, Innovation and Enterprise Committee. The Committee meets every three months and I send a short report to each meeting and attend every other meeting. Here’s my report for the February committee meeting.

The Orbital Project

Progress report to the Research, Innovation and Enterprise Committee

30th January 2012

Author: Joss Winn, PI/PM.

Progress since the last update to the RIEC on 13th December:

  1. The short-term focus for the project continues to be the development of the technical infrastructure for managing research data, while being mindful of the long-term requirements to develop policy and a supportive environment for research staff.
  2. Software development has begun. We have finished setting up the development environment for the Orbital system. This is a major software development project for the university and we have spent some time designing the server architecture and quality assurance procedures for development.
  3. Orbital will make use of ‘cloud computing’ and is working with ICT as a pilot project for integrating cloud computing into our local infrastructure. A meeting took place with Eduserv, a non-profit provider of cloud computing to the HE sector (running on Janet) and a further meeting is taking place with Rackspace, a major commercial provider of cloud computing services. This work sits alongside ICT’s need to refresh their server infrastructure next year and will provide ICT with a real opportunity to investigate the business case for cloud computing as well as issues around actual implementation.
  4. A full-time post for a Web Developer has been advertised and we expect the post to begin late March/early April. This is the second full-time Web Developer post on the Orbital project.
  5. We are pleased that Dr. Ling from the School of Engineering and his PhD student, Chunmei Qing, will work with closely with the Orbital project in the development of the software, policy and training materials. Similarly, we are working with Prof. Chris Bingham and Stuart Watson (Siemens), and have recently joined their fortnightly research meetings, which are extremely useful to the Orbital project. At this stage, we welcome involvement from any Researcher in the School of Engineering and further into the project intend to broaden our use cases to other research disciplines.
  6. A meeting has been held with Dr. Mansur Darlington from the University of Bath. Dr. Darlington led the JISC-funded ERIM project, which studied the Research Data Management (RDM) issues for the discipline of Engineering.[1] The meeting was very useful for the Orbital team, including partners at Siemens and Researchers in the School of Engineering, who attended. The ERIM project provides a very robust, theoretical basis, which Orbital will attempt to build upon and implement. Similarly, a follow-up to the ERIM project will provide prototype tools, which we hope to build on for Orbital.[2] This is a key external relationship for the Orbital project.
  7. One issue flagged by Dr. Darlington concerned national funding bodies’ RDM policies. Each funding body has an RDM policy which requires universities to have effective methods in place for managing, preserving and disseminating research data.[3] The EPSRC has told all universities that we must provide them with a RDM roadmap by 1st May 2012 and must be compliant with these expectations by 1st May 2015.[4]
  8. The Orbital project is required by JISC to produce an RDM Policy for the institution. A national meeting is being organised by JISC to assist with the development of such policy in March. Following this, I suggest that a workshop is held in March where the Orbital project and other key staff from the Library and Research and Enterprise Office begin to draft this Policy and the required EPSRC roadmap. This can then be presented to the RIEC for discussion and approval prior to submission to the EPSRC.
  9. A meeting has been arranged for March 7th, 9.30-12pm, to discuss the Business Case for Open licenses. This discussion will be of interest for anyone concerned with licensing research outputs (‘Open Access’), software development projects (‘Open Source’), and teaching and learning resources (‘Open Educational Resources’). Staff from the JISC-funded OSS Watch, University of Oxford, will present at this meeting. Andrew Hunter and James Murray will attend and members of the RIEC are also welcome. Please RSVP to Joss Winn by end of February.
  10. Joss is working with JISC to organise a national event focussing on issues around software development for Research Data Management, which will be held in May.

Last month, Nick wrote about how Orbital is being designed as an application to run in the cloud. This week, we met with Andy Powell from Eduserv to discuss the use of their ‘Education Cloud‘ for the Orbital project.

In the run up to this meeting, we’d been talking to colleagues in ICT Services about our need for more flexibility and autonomy when we required servers in order to do our work. Outside of work we’re quite used to spinning up servers on Rackspace or AWS to try things out and increasingly we’ve been looking for ways to take control of our servers in this way at work. We’re not the only Researchers who need this flexibility; colleagues in LiSC have also been telling us that for some of their work, the scalability and reliability of cloud services is looking increasingly attractive.

This is not to say that ICT services is inflexible and unreliable by any means. I’ve always found my colleagues very willing to help where and when they can, but I think we’d all agree that a central ICT department in a university, with the multivarious responsibilities it has, is not the same as a dedicated cloud provider and, in our case, does not offer the resilience nor the scalability that Rackspace or Amazon are offering for example. The availability of resources, the business model and available support are quite different. When I joined the University in 2007, ICT Services were implementing a new VMWare server farm, which has given us more flexibility than having to work with physical boxes in every instance. Typically, if I want a Linux server with 4GB RAM and 100GB of HDD, I put in a request, transfer approx. £1200, and some time later, a virtual server is provided to me at no further cost. If I need more RAM or HDD, I put in another request, transfer some money, and some time later, I get what I need. This process can take weeks or months.

However, our VMWare farm is now almost five years old and nearing ‘end of life’ and I know that ICT are thinking about the next five year cycle and how cloud computing fits into their future plans. Colleagues in the Online Services team have been using Rackspace recently as a CDN for the Common Web Design framework as well as hosting our popular Gateway website, and have been very impressed with the service. The main hurdle was not technical but organisational: billing for the use of the CDN is by credit card and Pay As You Go (PAYG), meaning we don’t know exactly how much it will cost each month. This is in contrast to how departments normally make payments which are known in advance and invoiced in arrears. Nevertheless, that hurdle has been overcome and hopefully set a precedence.

So the meeting we had with ICT Services was in light of all this and we recognised and agreed that Orbital was a timely and appropriate project by which the university could pilot a more extensive use of cloud services and look at how we might integrate servers in the cloud with our existing server farm. It would also allow us to think about new business models where the real costs of running a server are more transparent to everyone, rather than being absorbed by ICT as the server ages.

Nick has been setting up the Orbital development environment and basic architecture (more on that in another post) using Rackspace and the Orbital project pays for this each month via our departmental credit card. This works fine if a) the department is happy to use the credit card in this way; and b) we have dedicated project funds for this, but it’s no way to run a long-term service that is to be sustained by the institution. Our interest is not really in whether we use Rackspace or Eduserv for hosting during the period of our project – both offer Linux boxes afterall – rather we’re interest in working with ICT to ensure that by the end of the project, there are formal processes in place for a) running sustained services in the cloud; and b) providing researchers with the ability to spin up and manage adhoc servers as and when they are required.

The plan is to evaluate both Rackspace and Eduserv over the coming months, looking at which service fits best with the future plans of ICT Services. Rackspace has a much more mature offering, but we’re really keen to work with Eduserv too, recognising that they’re a new not-for-proft provider of cloud services, running on JANET and with a long history of providing hosting and other technical services to HE and government.

At our meeting with Andy, he went through much the same presentation that Nick and I had seen at the MRD start-up meeting, answering our specific questions along the way. He also demonstrated (for the first time??) the vCloud Director interface for setting up and managing the servers, and this should, in principle, integrate with our existing VSphere system. One of the nice things about the Eduserv offering is that unlike most other cloud providers, they provide the entire vCloud Director application to their customers, including a full API, rather than a cut-down interface. We’ve yet to see how vCloud Director will allow us to create access controls for different types of users, but that’s what the Orbital project will be helping to investigate and I’m pleased that we’re able to work with our ICT department in this way. There are other important questions, too, around data protection and liabilities, and Andy was keen that we review Eduserv’s Terms and Conditions and SLA and feed back our thoughts on it.

This experience will allow me to better understand the business model of the cloud and how to make the business case for developing and running cloud-based services. As Nick previously said, it also allows us to make our costs more transparent, too, so that the actual costs (per Gigabyte and per Gigahertz) of managing research data are clearer to both Researchers and the institution. Having a clearer idea of the costs will help us create a more sustainable service in the long run.

With the Orbital project we’re looking at taking a leap into the brave new world (well, at least as far as university projects go) of cloud hosting. Now, I hate the word “cloud” when used to describe most services because people bander it about like it’s some magical world-fixing technology when in actual fact all they mean is “it’s on the internet”. We have “cloud” services which are fundamentally no different from doing the same thing on a server kept on a desk somewhere; but Orbital isn’t going to be like that.

I hope.

Instead, Orbital will be a true ‘cloud’ service in that it’s a resource which end users can tap into with no care at all for the underlying technologies. It’ll scale up and down with demand, extending both processing power and storage space as needed. Should one of our servers fail for any reason it won’t be met with a week of downtime whilst we rebuild things, but instead a seamless transition of work to one of the redundant, load balanced alternatives. If a process stops working then instead of the entire system crashing down it’ll adapt, queueing tasks until things are restored. Alongside this, the use of common standards is something that is essential to development. RESTful APIs follow well understood principles for interacting with data, and authentication using OAuth (the same authentication method used by Twitter, Facebook, Google and Microsoft) is core to how things behave.

Whilst the Orbital application itself is built to run in a cloudy manner using these loosely coupled methods and Rambo architecture, we’re also going to be hosting the thing in the cloud. This helps us with a few things including the aforementioned scalability, improved resiliency and the ability to properly analyse how the cloud works for higher education.

There’s also an unexpected benefit of this cloudy approach to Orbital: we gain the ability to pin a real-world cost on the storage of research data since we are quite literally being charged by the GB. At the moment researchers tend to treat storage as a one-off cost – for example buying a pile of hard disks – with less understanding of what it actually costs to keep them spinning. Since Orbital will know more about the intricacies of the stored data than the researchers we will be able (for the first time) to offer a number both in terms of how much it is costing to store data and also the estimated carbon impact.

Both these numbers are something that we want to be able to give researchers to help them understand that hanging on to research data has a cost, but also that it’s probably more efficient to hang on to it in a central, cloud-based platform. Of course, we also want to give people a clean exit strategy so we’re also going to be looking at ways of easily creating ‘hard’ copies for offline, non-cloud storage whilst still maintaining a virtual presence for the purposes of referencing and metadata.