OpenStack Community Weekly Newsletter (Nov 30 – Dic 14)

 

December 14, 2012

Highlights of the weeks

What people talk about when they talk about OpenStack Cloud

There’s enough going on in the OpenStack ecosystem that you can pretty much find a comfortable niche drilling down on anything from hypervisor compatibility to driver support to who’s in the foundation. Mirantis’ David M. Fishman takes a step back and highlights recent conversations about OpenStack.

Welcome New Outreach Program for Women Interns

With a flurry of applications, we had a difficult decision in front of us, deciding who would be our newest mentored contributors through the GNOME Outreach Program for Women. All the applicants were enthusiastic and personable, knowledgeable and technical. We’re pleased to announce that the decisions have been made and these three are going to work on OpenStack full-time from January to March. Please welcome Laura, Anita and Victoria to the OpenStack community.

Making sense of SDN with–and without–HW-based networking in OpenStack Cloud

There’s a tremendous amount of talk about the shift in the networking business from hardware-bound networking to Software Defined Network. Mirantis’ Greg Elkinbard gives an overview of SDN in OpenStack world.

OpenStack Board of Directors Talks: Episode 1 with Rob Hirschfeld, Principal Cloud Architect at Dell

Learn firsthand about OpenStack, its challenges and opportunities, market adoption and Dell’s engagement in the community. Rafael Knuth’s goal is to interview all 24 members of the OpenStack board, and will post these talks sequentially at Dell TechCenter.

Security Advisories

Tips and tricks

Upcoming Events

Other news

Welcome new contributors

Celebrating the first patches submitted this week by:

  • Pavel Kravchenko and Alexey Roytman, IBM
  • Boris Pavlovic
  • Cian O’Driscoll, HP
  • Mana Kaneko
  • Andrew Glen-Young, Canonical
  • zhoudongshu
  • Yufang Zhang
  • Qiang Guan, Netease
  • Rohan Rhishikesh Kanade, NTT Data

The weekly newsletter is a way for the community to learn about all the various activities occurring on a weekly basis. If you would like to add content to a weekly update or have an idea about this newsletter, please leave a comment.

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Welcome New Outreach Program for Women Interns

 

December 13, 2012

Ever notice that sliced pineapple looks a bit like a yellow OpenStack logo? Since pineapple is a symbol of hospitality, I think we’ve foreshadowed how welcoming our community is.

With a flurry of applications, we had a difficult decision in front of us, deciding who would be our newest mentored contributors through the GNOME Outreach Program for Women. All the applicants were enthusiastic and personable, knowledgeable and technical. I’m pleased to announce that the decisions have been made and these three are going to work on OpenStack full-time from January to March:

Updated to add: The OpenStack Foundation, Rackspace, and Red Hat sponsored one internship each, and I want to be sure to express our appreciation to our sponsors. Thank you.

Our interns are expected to blog about their experiences, and we hope to get sponsorships for them to travel to the next Summit to share their projects as well. While they’re here to learn from us, I think we can all learn from them and their fresh perspective. Welcome Laura, Anita, and Victoria!

OpenStack in action 3! The Open Revolution / Paris, November 29th, 2012

 

December 11, 2012

On Thursday November 29th, eNovance has organized the 3rd edition of the « OpenStack in action ! » event in Paris. The day was intense and we had great speakers coming from all around the world to talk about OpenStack.

The majority of the 200 attendees was of course french but people came from 15 different countries to see speakers such as Mark Collier and Thierry Carrez, from the OpenStack foundation who explained the foundation priorities for 2013 and told us more about the technical committee; Rick Clark, from Cisco who underlined the importance of open source and its strengths, Adolfo Brandes, flying from Brazil to encourage companies to work efficiently on open source softwares thanks to Upstream University…

This edition showed how OpenStack is gaining interest and is growing in Europe at a fast pace.

European companies and entities were widely represented, among them: Stackops (Spain), Hastexo (Austria), the CERN (Switzerland), eNovance and Cloudwatt (France)…

Arturo Suarez from Stackops showed us interesting metrics on Cloud adoption in Europe and why OpenStack is a land of opportunities for doing business in the region.

Florian Haas (Hastexo) and James Duncan (Inktank) told us more about Ceph, the new yet very promising technology for storage and its integration on OpenStack.

Jan van Eldik, came to present the “already famous” CERN’s case study and explained why they chose an OpenStack Private Cloud (and a big one!) for their infrastructure…and, they have the ambition to ramp this infrastructure to 1500 hypervisors and between 100 000 and 300 000 VMs by 2015!

Cloudwatt, the new French company also chose OpenStack to build a massive Public Cloud in France. eNovance is helping them design and build their infrastructure.

Cloudwatt has a capital of 225 million euros and its goals are clear and ambitious : build a European Cloud that will be able to compete with american giants such as AWS, Microsoft Azure and Google…. France has never seen projects of this magnitude and the French government has clearly showed its engagement to promote the execution of this important project of common European interest (the French government invested 75 million euros in Cloudwatt). eNovance and Cloudwatt, both French sponsors of the OpenStack foundation showed how OpenStack allows service providers to be aggressive in terms of pricing on the very competitive IaaS market and are deeply committed in showing the way to OpenStack adoption in Europe.

All the companies that are involved in OpenStack underlined the importance of developing the community, multiplying the contributors and sharing the work in order to keep this fast pace of development and add new great features to OpenStack every 6 months.

Thanks to the HR investments several contributing companies made to work on OpenStack, we can see now that Quantum (network) is already a core project in the Folsom release and Ceilometer (metering) has been accepted in incubation in the future Grizzly release.

We were also please to welcome “newcomers” for this 3rd edition: HP, Suse, NetApp and IBM came to talk about their different contributions to the project and to explain why and how they are integrating their services on OpenStack. Whether we are talking about huge OpenStack based public clouds or different services related to storage or distributions, the presence of these companies gave a brand new scope to the visibility of OpenStack in France and Europe.

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1st Swiss OpenStack User Group

 

December 5, 2012

The first Swiss OpenStack user meeting  took place on 15th November 2012 at ETH in Zurich. The meeting was a combination of the Swiss OpenStack user group along with the zhgeeks regular meeting.

Around 90 people attended which provided for a lively atmosphere with a good opportunity for audience interaction and participation. Photos are here. Discussions continued well on into the night taking advantage of Zurich’s fine gastronomy and beverages.

ICCLab Introduction

Thomas M. Bohnert gave an overview of the ICCLab which covered the role of the InIT Cloud Computing Lab’s investigations in cloud technologies. Some of the lightning talks later covered some areas of ICCLab research.

CERN and OpenStack

Tim Bell gave a rapid overview of OpenStack architecture, news from the summit, the foundation structure and use of OpenStack at CERN.  The tools and procedures in use in the CERN computer centre are being adapted to be more sustainable and efficient by engaging and adapting open source solutions. Slides are available here.

He had a lot of ground to cover in 30 minutes! Given that the audience ranged from relative novices in OpenStack up to those deploying, it is also a wide range of details to cover in a single talk.

Amongst the questions were what is the impact of moving towards clouds on the current MONARC grid model as used by the WLCG. One of the common challenges for CERN is how to solve the “Changing the engine while the plane is flying” problem.  Even though there is an extended shutdown of the LHC during 2013/2014 in order to ugrade to higher energy, the physics analysis of the data taken in the first run from 2010 to 2012 will continue. Any major architecture changes on the grid must be performed in a staged fashion as there are over 130 sites and 200,000 servers to consider so big bang migrations are not realistic. Thus, the approach we are taking is one of running the grid services on top of the CERN private cloud. This allows us to gain improvements in efficiency via more dynamic workload placement and simplified operations procedures without needing to break compatibility. As the users of the service wish, resources can be moved between standard batch services on the grid and those available as VMs on the cloud.

Following up from this question was whether the other centres in the WLCG would be following the same approach. Each tier-1 is an independent organisation and can make its own choices within the framework of the WLCG. CERN is just one of the sites and each of the sites are able to make their own decisions based on individual requirements. Research into areas such as federated clouds is ongoing but no decisions for production federated clouds have been made.

Developing OpenStack APIs

Thijs Metsch from Intel gave a lightning talk on developing OpenStack APIs. Since OpenStack is a modular architecture, it is possible to plug in additional API functionality. This process is made more straightforward by the use of WSGI and python. Examples of this already implemented are the OCCI API and others such as CDMI are also coming along. Cloudscaling recently announced their implementation of the Google Compute Engine API for OpenStack. Thus, the choice of API can be made independently from the choice of IaaS technology.

Thijs demonstrated how this could be done by creating a simple python RESTful API and showed us the python code to implement it.


ICCLab Proof of Concept

Fabrice Manhart from the ICCLab presented the ICCLab proof of concept OpenStack cloud. ICCLab use Foreman and Puppet, as do CERN, and have good experiences with this combination. Being able to re-install their 15 hypervisors in 15 minutes is a typical case.

Swiss Academic Cloud Proof of Concept

Dean Flanders from Friedrich Miescher Institute for Biomedical Research /SwiNG  presented their OpenStack based cloud which is testing out new computing models in a research environment. They selected OpenStack for its flexibility (and price :-). Their cloud allows researchers to provision their own machines rapidly. Amongst the areas they are investigating is the use of flash storage, aiming to reach 100TB SSD capacity. This approach follows work in the SDSC on Gordon which is a 16K cores 300TB flash based facility using OpenStack and ScaleMP.

While it is still early days for OpenStack, they are looking into new areas such as cloud bursting and workload balancing.

Software Defined Networking at ICCLab

Philipp Aeschlimann from ICCLab presented the current status of software-defined networking and their investigations as part of ICCLab. There is a lot of interest in the OpenStack community around these features and Quantum functionality covers many features. There was a live demonstration given showing OpenStack Folsom, Quantum and Floodlight.

OpenStack at SWITCH

SWITCH  provide facilities for the universities and academic organisations in Switzerland. Joel Casutt presented their early work to extend their existing services to include cloud services based on OpenStack. They are currently building up the hardware aiming to provide a free pilot service in April. During the summer, this experience will be reviewed along with the charging structure to be used going forward.

CloudBroker

Wibke Sudholt from Cloudbroker  presented their open source broker solution. Within the SCIentific gateway Based User Support (SCI-BUS) EU FP7 project, CloudBroker has extended its CloudBroker Platform so that it now also allows access to Amazon and IBM public clouds as well as to private cloud infrastructures based on OpenStack and Eucalyptus. While the initial aims were to use the EC2 API in OpenStack, there were some missing features and functionalities such as auto-deployment so it was necessary to use some of the OpenStack APIs to achieve full function. Using OpenStack clouds in universities allowed this porting to be done without having to set up their own OpenStack instance. The XML support was also not as good as JSON in some areas.

Thoughts

Even in a country with a small population such as Switzerland, there are many areas of OpenStack work. Per-capita, the Swiss user group attracted 5 times more people that the Chinese user group meeting (where 3,000 people attended). There was only time for 6 lightning sessions of 10 minutes but we are now planning the second meeting to allow those who could not show their work!

Many of the attendees were investigating/testing proof of concepts. The number of production deployments are small amongst those attending. As this is often the first investigations into cloud services, this is not too surprising. Many of the deployments were using Puppet as well. During the evening, we discussed the competition for talent. Given that many CERN people are on short term contracts, the interest in OpenStack and Puppet skills makes for a good skill on their CVs.

A recent blog  on comparing Google trends follows similar lines. The interactive report is here . Unfortunately, there is not enough data from Switzerland to determine the interest in different cloud products.

Overall, there was a lot of enthusiasm but this was balanced with caution that comes from uncovering some of the difficulities to understand clouds and how best to deploy OpenStack.

The most frequent question at the end was “When will we meet up again?”. Stay tuned for more CHOSUG!

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Announcing OpenStack Day 15 December, Bangalore India

 

December 3, 2012

We are pleased to announce that on 15th December 2012 we are Organizing 1 day event on OpenStack  in Bangalore India.

We have limited 120 seats so kindly register at  http://iosug.doattend.com/ The nominal entry fee you pay will be donated to NGO.

Event Schedule is up now   http://bit.ly/UdUHGA

Key take away :–

1. OpenStack foundation and what it means for the OpenStack project.

2. Used case from people who are using it in production.

3. Independent analyst take on OpenStack

4. Indian start-ups using OpenStack and building solutions around it.

5. Reshape your career with OpenStack.

6. Panel discussion

Kindly spread the word about the same. 🙂

Special thanks to Our Sponsors Aptira, Rackspace and OpenStack foundation.

 

Vietnam OpenStack Community launch 30/9/2012 – report by Hang Tran

 

November 30, 2012

Good day, everyone!

Warmest greetings from Vietnam OpenStack Community.

We had a great meetup last night! This is all that we can say :-).

Hosted by Hanoi University of  Industry (HAUI), the Library Hall, where the meetup held, was full of people from different organizations, ICT companies and universities.  We especially welcomed Mr. Nguyen Hong Quang, Chairmain of Vietnam Free and Open Source Software Association (VFOSSA), other members of VFOSSA, people from ICT companies such as NetNam, iWay, EcoIT, DTT… and HAUI students. To our surprise, there are almost 100 people has attended this event.

The meetup was a bit formal in the beginning when VFOSSA and OpenStack were introduced. The students seemed a bit nervous (although we could still see the exciting expression on their face) as OpenStack is completely a new term to them. But the Library Hall was heating up slowly when the discussion started; beers and breads are brought up to the table to keep the day-end brains running :-). People were eating and speaking elatedly. The atmosphere was more and more relaxing then.

During the event, the attendants had a chance to listen to Mr. Nguyen Hoang’s OpenStack Summit notes sent back from the States. Mr. Hoang is a senior architect with 30 years of expertise in providing solution to software and big system architecture in America. He attended the OpenStack Fall Summit (held in San Diego, USA last mid October) and the notes were about his experiences to share with others. We could see that the words from the heart of such an experienced expert greatly inspired all the attendants that night.

Warmly welcomed at the meeting was the presence of Dr. Nguyen Tuan Hoa, a senior consultant on IT solution with 38 years of experience in the IT field. He was a member of the famous team who built the first computer of Vietnam (and one of the very first few of the world) – the VT83 in 1983. He especially shared his lifetime experience to the people available at the meetup, especially to the students. As I recall he said that “This is a big opportunity for Vietnam. We shouldn’t miss this just like we have missed few other big opportunities. This is the “now or never” time for Vietnamese ICT community to get on board the “OpenStack ship” so that we are not left behind this global endeavour”.

Sincere thanks goes to Hanoi University of Industry for the great hospitalities provided.

And special thanks to our speakers:

– Mr. Nguyen Hong Quang, Chairman of Vietnam Free and Open Source Software Association (VFOSSA) for his introduction on VFOSSA and how VFOSSA will support OpenStack’s activities.

– Mr. Nguyen The Trung, Managing Director of DTT for his presentation on OpenStack, its opportunities for Vietnam and the development of Vietnam OpenStack Community in the long run.

– Mr. Nguyen Duc Quyen, Director of Consultant department of DTT for his updates on the recent Melbourne meetup, which he has attended on 20th November this year.

As the result of our first meetup, more than 20 people have volunteered to join the Start-up team. We are now looking forward to re-structuring this team and getting things moving for OpenStack. One of our main objective is to start translating OpenStack manuals. For this, we really need help from OpenStack community. Any ideas, suggestions are welcomed and appreciated for an OpenStack starter like us.

Our next likely meetup to be held in Danang city next month. We will inform you all on our upcoming activities.

I will be back soon with updates with you guys on the OpenStack movement in Vietnam.

 Vietnam OpenStack Community coordinator – Hang Tran

For more information or to join the group please email Hang or enquire at www.dtt.vn

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OpenStack Community Weekly Newsletter (Nov 16-30)

 

Highlights of the weeks

OpenStack Outreach Program for Women Still Accepting Candidates

We are constantly moving and growing and very excited to invite newcomers to our community. To this end, the OpenStack Foundation has joined the GNOME Outreach Program for Women. The Women in OpenStack group has already found some mentors for the program and ideas for projects are flowing in. If you know women that may be interested in joining OpenStack please tell them to read our blog post with more details. The deadline is approaching (Dec 3) and we still have place for candidates.

OpenStack Nova, Glance, Keystone, Cinder, Quantum and Horizon 2012.2.1 released

The OpenStack Stable Branch Maintainers Team has been busy selectively back-porting bugfixes to the stable/folsom branch according to our “safe source of high-impact fixes” criteria documented on the wiki page StableBranch. We’re happy to announce the 2012.2.1 release, the first in the series of releases to make available the bugfixes from stable/folsom. A total of 139 bugs have been fixed in this release, which is a higher than the usual volume of fixes in a stable release.

What to expect from Grizzly-1 milestone

The first milestone of the OpenStack Grizzly development cycle is just out. What should you expect from it? What significant new features were added? With more than 399 bugfixes landing in this milestone, Grizzly-1 contains already lots of new features. Thierry’s blog post adds details for what changed in each component.

Developing OpenStack Dashboard using Fedora

Many developers recommend using devstack to work on OpenStack. Matthias Runge doesn’t recommend that for Dashboard (Dan Berrange has an article providing more details). Good news is, at least for OpenStack’s dashboard, devstack is not required in any case, it just runs on plain Fedora. Matthias swears that the instructions provided for Fedora’s test day worked great, no rocket science and no engineering master required.

What DevStack does to your host when setting up OpenStack on Fedora 17

DevStack is one of those huge, massive scripts that requires super user access to your machine. Understanding what it does to your setup is pretty complex. Daniel P. Berrangé did most of the work for us investigating just what DevStack does to a Fedora 17 host when it is run. Fascinating read.

The Future of Incubation and Core

Mark McLoughlin summarizes quite well the ongoing discussion to define the future of Incubation nd Core. The OpenStack Technical Committee and the OpenStack Foundation Board of Directors have pretty separate sets of responsibilities and can get on with their work independently. One exception to that is the inclusion of new projects in OpenStack. In the coming weeks, members of the two bodies will decide how to clarify confusion around the term “core project” and what exactly happens projects who graduate through OpenStack’s Incubation process. A thread on the openstack-dev mailing list is ongoing and is a great example of how a mailing list discussion can actually help to drive a rough consensus while still giving everyone an opportunity to express their views.

Driving a 100 Gigabit Network with OpenStack

Argonne National Laboratory is interested in building IaaS cloud systems that perform similarly to traditional HPC cluster-style systems for one of their projects. Narayan Desai reports on the work to validate the ability of an Openstack system to drive large quantities of network bandwidth, memory to memory.

Go to Australia in January for an OpenStack day at LCA2013

Being held in January in Canberra, Australia, linux.conf.au is one of the foremost open source conferences in the world, and is considered the most prestigious in the southern hemisphere. Linux.conf.au’s first ever OpenStack miniconf day is being held Jan 29, and we expect over 200 people will be attending the miniconf alone, with hundreds more attending the week long conference. More information is available at http://lca2013.linux.org.au/wiki/Miniconfs/OpenStack and the CFP is open.

Security Advisories

Tips and tricks

Upcoming Events

Other news

Welcome new contributors

Celebrating the first patches submitted this week by:

  • Yolanda Robla, Canonical
  • dekehn
  • Ken’ichi Ohmichi, NEC
  • Belmiro Moreira
  • Anita Kuno
  • Shrutiranade38
  • Morgan Fainber, Metacloud
  • Wangpan, Netease

The weekly newsletter is a way for the community to learn about all the various activities occurring on a weekly basis. If you would like to add content to a weekly update or have an idea about this newsletter, please leave a comment.

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Report: November month OpenStack meetup, India

 

November 27, 2012

In India we  organized two meetups in month of November. On was held in New Delhi and another one in Bangalore.

 

OpenStack meetup, Delhi, November 17, 2012  http://www.meetup.com/Indian-OpenStack-User-Group/events/90700582/

The event was attended by over 25 people with different background start-up/students/researchers/MNC/Developers

Kavit Munshi spoke on Keystone and did a demo of same.

Syed Armani spoke about Nova internal and Quantum.

Satyakaam Goswami did a devstack demo.

Thanks to the Faculty of Engineering, Jamia Millia Islamia for the venue.

OpenStack meetup, Bangalore, November 25, 2012 http://www.meetup.com/Indian-OpenStack-User-Group/events/90021782/

The event was attended over 50 people with different background start-up/students/researchers/MNC/Developers. We had great discussion over all along with the presentations and demo.

Divyanshu Verma spoke and did demo of Crowbar an orchestration tool for OpenStack.

Kavit Munshi spoke about the optimization of nova and KVM.

Srinivasa Acharya spoke the folsom to grizzly road map.

Photos for the event are http://www.meetup.com/Indian-OpenStack-User-Group/photos/11898552/

Thanks to DELL R&D, Bangalore for hosting this meetup. Last not the least Pizza and Drinks were sponsored jointly by Aptira and NetApp.

Slides of all our meetups will be posted on http://slideshare.net/openstackindia and we are also on twitter with http://twitter.com/openstackindia

 

 

 

Australian OpenStack UG – Sydney, Melbourne, Brisbane Tri-City Meetup 20/11/12

 

November 22, 2012

This past Tuesday night saw the Australian OpenStack User Group produce a tri-city simultaneous user group meeting covering Sydney, Melbourne and Brisbane. Hooked together by GoToMeeting provided by Dan Pendlebury at Citrix, the evening saw OpenStack, pizza and beer served up at Intersect’s offices in Sydney, Haylix’s offices in Melbourne and Red Hat’s offices in Brisbane.

We believe this may have been the first multi city meetup where 3 way video linked the sites together, and we also had some attendees join us remotely.

Hosted by Tristan Goode from Aptira in Sydney, speakers were:

  • Sina Sadeghi, Lead Cloud Engineer from Aptira, who reviewed the recent Folsom Summit and presented his insightful views on the path to Grizzly.

We then crossed to Melbourne and heard from:

Lastly we transferred the main video feed to Brisbane to hear from:

The evening wasn’t without some minor hitches that we’ll work out for next time, but all in all it was deemed a success and a great way to get OpenStack out to more people more efficiently.

My sincere thanks to our presenters, and to our sponsors

Most importantly, I’d like to give a very special and long overdue thank you to Katrina Clauscen who has been behind the planning of nearly every AOSUG event we’ve had in every capital city in Australia since we began over a year ago.

Our next event is an OpenStack miniconf to be held at Linux Conf AU (LCA) on January 29 and to date we have more than 140 people who have registered their interest to attend. LCA is a world renowned conference with a wealth of great technical content and this is the first appearance of OpenStack at LCA.
We are looking for presentations on:

  • The core projects of the OpenStack project
  • Getting started using OpenStack
  • Uses in scientific computing and the enterprise
  • What it means to be part of OpenStack
  • Automation in the virtual datacenter
  • The past, present and future of OpenStack

Please go to http://bit.ly/Waue30 to submit your proposal. The CFP has just been extended to Sunday December 2.

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OpenStack Community Weekly Newsletter (Nov 9-16)

 

November 16, 2012

Highlights of the week

OpenStack Outreach Program for Women Accepting Candidates

OpenStack provides open source software for building public and private clouds. We are constantly moving and growing and very excited to invite newcomers to our community. To this end, the OpenStack Foundation has joined the GNOME Outreach Program for Women. Join the list of mentors, contribute ideas, apply as intern.

What’s new in libvirt for the OpenStack Nova Folsom release

Even if Folsom has been out for a while now, Daniel P. Berrangé provided a little more detail on some of the changes he was involved with making to the libvirt driver and what motivated them.

Why to refactor the virt disk API in Nova

When launching a virtual machine, Nova has the ability to inject various files into the disk image immediately prior to boot up. Nova runs as an unprivileged user, and the guest files to be changed are typically owned as root. This means all the file injection commands need to run via Nova’s rootwrap utility to gain root privileges. It should come as little surprise that this has already resulted in a security vulnerability / CVE against Nova. The solution to this class of security problems is to decouple the file injection code from the host filesystem. Read more on Daniel’s blog post.

Swift 1.7.5 Released

Swift 1.7.5 has been released. This release is the work of twenty-seven contributors and includes several important new features and bug fixes.

Making keystoneclient python library a little easier to work with

A quick guide to using the python keystoneclient library and some of its new features, with v2 API examples throughout.

Installing OpenStack Nova Compute on Hyper-V

A lot of work went on OpenStack and Hyper-V integration, with the result of bringing back Hyper-V in the Nova sources in time for the Folsom release. Get started with OpenStack and Hyper-V using the installer developed by Cloudbase Solutions.

Security Advisories

Tips and tricks

Upcoming Events

Other news

Foundation News

Welcome new contributors

Celebrating the first patches submitted this month by:

  • Hendrik Volkmer, Cloudbau
  • Andrew Bogott, Wikimedia Foundation
  • Tim Daly, Jr, Yahoo! Inc
  • Darren Worrall

The weekly newsletter is a way for the community to learn about all the various activities occurring on a weekly basis. If you would like to add content to a weekly update or have an idea about this newsletter, please leave a comment.

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