Kubernetes Business Resiliency FAQ

The SNIA Cloud Storage Technologies Initiative continued our webcast series on Kubernetes last month with an interesting look at the business resiliency of Kubernetes. If you missed “A Multi-tenant, Multi-cluster Kubernetes Datapocalypse in Coming” it’s available along with the slide deck in the SNIA Educational Library here. In this Q&A blog, our Kubernetes expert, Paul Burt, answers some frequently asked questions on this topic.

Q: Multi-cloud: Departments might have their own containers; would they have their own cloud (i.e. Hybrid Cloud)?  Is that how multi-cloud might start in a company?

A: Multi-cloud or hybrid cloud is absolutely a result of different departments scaling containers in a deployment. Multi-cloud means multiple clusters, but those can be of various configurations. Different clusters and clouds need to be tuned for the needs of the organization.

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Business Resiliency in a Kubernetes World

At the 2018 KubeCon keynote, Monzo Bank explained the potential risk of running a single massive Kubernetes cluster. A minor conflict between etcd and Java led to an outage during one of their busiest business days, prompting questions, like “If a cluster goes down can our business keep functioning?”  Understanding the business continuity implications of multiple Kubernetes clusters is an important topic and key area of debate.

It’s an opportunity for the SNIA Cloud Storage Technologies Initiative (CSTI) to host “A Multi-tenant Multi-cluster Kubernetes “Datapocalypse” is Coming” – a live webcast on June 23, 2020 where Kubernetes expert, Paul Burt, will dive into:

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Answering Your Kubernetes Storage Questions

Our recent SNIA Cloud Storage Technologies Initiative (CSTI) Kubernetes in the Cloud series generated a lot of interest, but also more than a few questions. The interest is a great indicator of Kubernetes rising profile in the world of computing.

Following the third episode in the series, we’ve chosen a few questions that might help to better explain (or bring additional context to) our presentation. This post is our answer to your very important questions.

If you’re new to this webcast series about running Kubernetes in the cloud, you can catch the three parts here:

The rest of this article includes your top questions from, and our answers to, Part 3:

Q. What databases are best suited to run on Kubernetes?

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Kubernetes in the Cloud Q&A

Kubernetes is a hot topic these days, generating lots of interest and questions. The goal of our SNIA Cloud Storage Technologies Initiative Kubernetes in the Cloud webcast series is to cut through the hype and provide a vendor neutral look at what Kubernetes is and how it is being used. Our most recent webcast, Kubernetes in the Cloud (Part 2), generated some interesting questions. Here are answers from our expert presenters.

Q. If I’m running my Kubernetes infrastructure at a cloud service provider, do I need CSI support by the cloud provider? If this is not available, I will need a virtual storage array that provides CSI leveraging the underlying cloud storage. Do you know whether there are solutions on the market that I can deploy as a virtual machine at my cloud provider?

A. Current solutions using the CSI interface for public cloud storage are not available at this point. It will be up to the cloud provider to decide whether to support those interfaces to their storage layers.

Q. Does each pod run on one CPU core? I am trying to understand how to size the server configuration?

A. Containers use Linux cgroups to limit the amount of CPU and memory a container can consume and this is exposed in Kubernetes as limits that you can set.

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Stateful Workloads on Kubernetes: (Almost) Everything You Need to Know

Kubernetes is great for running stateless workloads, like web servers. It’ll run health checks, restart containers when they crash, and do all sorts of other wonderful things. So, what about stateful workloads? Large implementers like Uber say to avoid it if you can [1], and gurus like Kelsey Hightower echo that sentiment [2].

It’s the topic we’ll address on August 20th at our live SNIA Cloud Storage Technologies Initiative webcast “Kubernetes in the Cloud (Part 3): Stateful Workloads.”  In this session, we’ll explore when it’s appropriate to run a stateful workload in cluster, or out. We’ll discuss the best options for running a workload like a database on the cloud, or in the cluster, and what’s needed to set that up.

We’ll cover:

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Get Ready for Part 2 of Kubernetes in the Cloud

Michelle Tidwell, SNIA Board of Directors

As enterprises move to a hybrid multi-cloud world, they are faced with many challenges. In addition to decisions surrounding what technologies to use, they are also seeing a transformation in traditional IT roles. Storage admins are asked to be more cloud savvy while new roles of cloud admins are emerging to handle the complexities of deploying simple and efficient clouds. Meanwhile, both these roles are asked to ensure a self-service environment is architected so that application developers can get resources needed to develop cutting edge apps not in week, days or hours but in minutes.

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Understanding Kubernetes in the Cloud

Ever wonder why and where you would want to use Kubernetes? You’re not alone, that’s why the SNIA Cloud Storage Technologies Initiative is hosting a live webcast on May 2, 2019 “Kubernetes in the Cloud.”

Kubernetes (k8s) is an open-source system for automating the deployment, scaling, and management of containerized applications. Kubernetes promises simplified management of cloud workloads at scale, whether on-premises, hybrid, or in a public cloud infrastructure, allowing effortless movement of workloads from cloud to cloud. By some reckonings, it is being deployed at a rate several times faster than virtualization.

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Got Questions on Container Storage? We’ve Got Answers!

Keeping up with changes in the world of container storage is not easy. That’s why the SNIA Cloud Storage Technologies Initiative invited expert Keith Hudgins of Docker for a live webcast, “What’s New in Container Storage.” I encourage you to watch it on-demand. It’s well worth the approximately half-hour investment to get up to speed on container storage.

As promised during the live event, here are answers to the questions we received:

Q. How does the new Container Storage Interface fit in here? Read More

Wondering What’s New in Container Storage?

The landscape of containers is moving fast and constantly changing, with new standards emerging every few months. If you wondering what’s new in container storage, you are not alone. That’s why the SNIA Cloud Storage Technologies Initiative is hosting a live webcast on February 26, 2019, “What’s New in Container Storage.”

In this webcast, Keith Hudgins of Docker joins us as a follow up to his earlier container webcast “Intro to Containers, Container Storage and Docker.” It’s our most popular webcast to date with thousands of views. If you missed it, it’s available on demand and will provide you with some great background information before our February 26h webcast.

I encourage you to register today for the February 26th session where you’ll learn:

  • What’s new, what to pay attention to, and how to make sense of the ever-shifting container landscape.
  • Container storage types and Container Frameworks
  • An overview of the various storage APIs for the container landscape
  • How to identify the most important projects to follow in the container world
  • The Container Storage Interface spec and Kubernetes 1.13
  • How to get involved in the container community

It will be live, so bring your questions!

What the “T” Means in SNIA Cloud Storage Technologies

The SNIA Cloud Storage Initiative (CSI) has had a rebrand; we’ve added a T for Technologies into our name, and we’re now officially the Cloud Storage Technologies Initiative (CSTI).

That doesn’t seem like a significant change, but there’s a good reason. Our old name reflected the push to getting acceptance of cloud storage, and that specific cloud storage debate has been won, and big time. One relatively small cloud service provider is currently storing 400PB of clients’ data. Twitter alone consumes 300PB of data on Google’s cloud offering. Facebook, Amazon, AliBaba, Tencent – all have huge data storage numbers.

Enterprises of every size are storing data in the cloud. That’s why we added the word “technologies.” The expanded charter and new name reflect the need to support the evolving cloud business models and architectures such as OpenStack, software defined storage, Kubernetes and object storage. It includes data services, orchestration and management, understanding hyperscale requirements and the role standards play.

So what do we do? The CSTI is an active group that publishes articles and white papers, speaks at industry conferences and presents at highly-rated webcasts that have been viewed by thousands. You can learn more about the CSTI and check out the Infographic for highlights on cloud storage trends and CSTI activities.

If you’re interested in cloud storage technologies, I encourage you to consider joining our group. We have multiple membership options for established vendors, startups, educational institutions, even individuals. Learn more about CSTI membership here.