The Hub

by Federico Lucifredi

Software is made at the intersection of Technology and Management.

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Catastrophe Hits Your Datacenter – But Users Don’t Notice

Many large, network-dependent organizations are deploying OpenStack together with Red Hat Ceph Storage because they are inherently highly available solutions.

What if you lost your datacenter completely in a catastrophe, but your users hardly noticed?

Sounds like a mirage, but it’s absolutely possible, and major datacenters with high demand for full availability are already accomplishing this.

 Redefining Disaster Recovery

When most companies talk about disaster recovery, they’re referring to backing up their data and how quickly they can restore it if something goes wrong. Their strategy depends on how much downtime their operations can tolerate, balanced against the cost of restoring full function. A business’ tolerance for data loss is codified by the Recovery Point Objective (RPO) and Recovery Time Objective (RTO) targets it set in its data protection plan, specifying how much

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It’s Hammer Time

I am happy to announce our latest Hammer release of Red Hat Ceph Storage, minor release 3 — also known as 1.3.3. This release rebases to the latest upstream 0.94.9, and we are quite proud to say we accomplished this in just 30 days, combining quality and speedy delivery in one swift, tentacular package. Our newest release is immediately available, both ISOs and repositories, for either RHEL 7.2 or Ubuntu 14.04.

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This release resolves 62 bugs and known issues, and solidifies 1.3 as “old reliable” in our supported release lineup. While 1.3 is barely 15 months old and not even halfway through its lifecycle, in the fast-moving world of Software-Defined-Storage the state of the art is now defined by the new shiny RHCS 2 we shipped just four weeks ago — If you are new to Ceph, I recommend you start there or with upstream Jewel.

 What’s new

First of all, we have a moderate severity security

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Jewels of Distributed Storage

OpenStack Days NYC, Operators Midcycle and Red Hat Ceph Storage 2.0

Today, while I was enjoying the keynotes of old friends at OpenStack Days New York City, the Ceph team at Red Hat was hard at work releasing RHCS 2.0 — the most significant update to Red Hat Ceph Storage since we acquired Inktank in 2014.

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 Geographic distribution

Ceph is inherently highly available — you could lose a disk, a host, even a rack of storage with the certainty that your data is safely replicated in at least two other places. Ceph’s synchronous nature is a further guarantee: write operations do not return until all three copies have been committed to disk. Like all engineering decisions, this comes with a tradeoff: Ceph is sensitive to network latency as a result of its conservative design. This makes a stretch cluster configuration, where multiple racks of hardware belonging to the same logical cluster

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OpenStack and Ceph: like Peanut Butter & Jelly

The Three musketeers (as our marketing colleagues have started to call us now) were at the Red Hat Summit last week to walk the assembled crowd of CIOs through all the reasons why Ceph is the most successful storage technology in the OpenStack market segment.

OpenStack Foundation Survey

Ceph is the most widely deployed storage technology used with OpenStack, most often because it’s an open source, massively scalable, unified software-defined storage solution. Its popularity is also due to its unique and optimized technical integration with the OpenStack services and its pure-software approach to scaling. In other words, they just go together like peanut butter and jelly.

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In this intro-level session, Sean and I introduced the audience to OpenStack and Ceph, and Sébastien tied the two together mapping the deep integration between the two. There are still many that need to hear about the rise of

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Protecting the Galaxy: OpenStack DR with Ceph

The terrific trio composed of Sébastien Han, Sean Cohen and yours truly descended on Austin this week for the recurring ritual of the OpenStack Summit. Our mission: to save the galaxy – or at least your data. Séb and Sean covered architectural options for disaster recovery in OpenStack and I introduced the capabilities provided by Ceph’s newfangled RBD Mirroring feature in last week’s 10.2.0 (“Jewel”) release.

UPDATE: The recording of our OpenStack Summit session is now live on the OpenStack Foundation’s YouTube channel.

Our slides are available as a PDF and can be viewed inline below — we are including even our backup slides for additional Gory detail ™ value:

See you all in Barça this fall!

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Leap Ahead

It’s a fantastic thing that we made the release date, because otherwise we would have to wait for four more years — I had this quirky desire to release one of my products on February the 29th, and this year we finally made it happen! ;-)

Today we are pleased to launch the latest and greatest release of Red Hat Ceph Storage, upping the minor release number to 1.3.2.

Red Hat Storage

This is first and foremost a maintenance release including a number of bug fixes, but there are some features as well. First of all, we are rebasing on upstream Hammer 0.94.5 from the current .3, as always tracking the state of the art in Ceph’s LTS release development. Adding the extensive testing and bug fixing that gives Red Hat products their reputation for quality has been accomplished in efficient 8-week test and integration cycles during our last two point releases, giving customers a remarkably current product

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Storage Day NYC

The Red Hat Ceph Storage roadmap
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The Red Hat storage team descended on NYC today, and I was up presenting our Ceph product roadmap with none other than Sage himself.

The video covers our current thinking around product releases coming in 2016, and is of course subject to change, but I fully expect some variation of the Pareto rule applies here and we are at least 80% on mark.

I covered the current state and plans for our Hammer-based product (RHCS 1.3), but the best short summary of Ceph’s current LTS release is conveyed by CERN’s Dan van der Ster’s quote to OpenStack Superuser last year:

 “For less than 10-petabyte clusters, Ceph just works, you don’t have to do much”

Sage laid out the very exciting objectives of the upcoming Jewel release, which is the basis for this Summer’s Red Hat Ceph Storage 2.0. The slides are below, and we are happy to answer your questions on Twitter

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Ceph Architectural Overview

Returning to the familiar ground of MIT with a brand new topic for BLU

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After a really busy year in Red Hat’s Ceph Storage team, I finally had some time to catch my breath and prepare a properly technical talk for my favorite local audience: the Boston Linux and Unix user group hosted at MIT.

We had enough time to go over Ceph’s project philosophy and foundational thinking before digging into its architecture. We continued with a few choice points aiming to showcase what makes Ceph such a promising and technically interesting storage technology. And, as always, the questions came from all corners — as you will see in the recording!

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My slides for the event can be downloaded here as a PDF: Ceph Architectural Overview — or you can browse inline below.

Till next time!

UPDATE:
The recording of the talk is now live on BLU’s YouTube channel.

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Software Defined Storage: What Makes Ceph Special

Greetings from Guadalajara, Part II

Recording of the Live Stream from OpenStack GDL yesterday

The second part of my intro talk to Ceph for the Guadalajara Stackers was also a remote delivery, but instead of the OpenStack Liberty summit in Vancouver, my favorite international user group caught up with me at Red Hat’s engineering lead office in Westford.

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My slides for the event are posted here: Software Defined Storage: What Makes Ceph Special.

Hasta la próxima!

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One More Tentacle…

Today we are pleased to add Ubuntu 14.04 ‘Trusty’ binaries to our previously released Red Hat Ceph Storage 1.3. Based on the same upstream Ceph Hammer codebase, this new release includes all the features already shipping in our RHEL 7 release and underwent the same exacting QA process.

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Just as important, we are also happy to announce that going forward, future releases of Red Hat Ceph Storage will resume shipping simultaneously on all our supported platforms.

Starting today, you may download Red Hat Ceph Storage 1.3 for Ubuntu following this link. Ubuntu-specific installation and upgrade documentation is also available.

Release Notes: RHCS 1.3 (RHEL 7 and Ubuntu 14.04)
Errata: RHBA-2015:1883

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 We’re Always Ready to Support You

We will continue to support RHCS 1.2, our previous long-term support release, until May 31, 2016 — exceeding our release-time committment to support

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