New Ceph capabilities and Reference Architectures

Software Defined storage, Big Data and Ceph. What is all the fuss about?

Kamesh Pemmaraju, Sr. Product Mgr, Dell

Neil Levine, Dir. of Product Mgmt, Red Hat

OpenStack Summit Atlanta, May 2014

CEPH

CEPH UNIFIED STORAGE

FILE SYSTEM

BLOCK STORAGE

OBJECT STORAGE

Keystone

Geo-ReplicationNative API

3

Multi-tenant

S3 & Swift

OpenStack

Linux Kernel

iSCSI

Clones

Snapshots

CIFS/NFS

HDFSDistributed Metadata

Linux Kernel

POSIX

Copyright © 2013 by Inktank | Private and Confidential

CEPHFSA distributed file

system with POSIX semantics and

scale-out metadata management

RGWA web services

gateway for object storage, compatible

with S3 and Swift

RBDA reliable, fully-distributed block device with cloud

platform integration

ARCHITECTURE

4Copyright © 2013 by Inktank | Private and Confidential

LIBRADOSA library allowing apps to directly access RADOS (C, C++, Java, Python, Ruby,

PHP)

RADOSA software-based, reliable, autonomous, distributed object store comprised ofself-healing, self-managing, intelligent storage nodes and lightweight monitors

APP HOST/VM CLIENT

COMPONENTS

5

S3/SWIFT HOST/HYPERVISOR iSCSI CIFS/NFS SDK

INTERFACES

STORAGE CLUSTERS

MONITORS OBJECT STORAGE DAEMONS (OSD)

BLOCK STORAGE

FILE SYSTEM

OBJECT STORAGE

NODE NOD

E NODE

NODE

NODE

NODE

NODE

NODE

NODE


THE PRODUCT

7

INKTANK CEPH ENTERPRISEWHAT’S INSIDE?

Ceph Object and Ceph Block

Calamari

Enterprise Plugins (2014)Support Services


Subscription-based

Priced on capacitySingle price for all

protocols


USE CASE: OPENSTACK

9

OPEN STACKKEYSTONE

APISWIFT API CINDER API

GLANCE API

NOVAAPI

CEPH STORAGE CLUSTER(RADOS)

CEPH OBJECT GATEWAY

(RGW)

CEPH BLOCK DEVICE(RBD)

HYPERVISOR

(Qemu/KVM)


USE CASE: OPENSTACK

10

OPEN STACKKEYSTONE

APISWIFT API CINDER API

GLANCE API

NOVAAPI

CEPH OBJECT GATEWAY

(RGW)


HYPERVISOR

(Qemu/KVM)

Volumes Ephemeral

Copy-on-Write Snapshots


USE CASE: OPENSTACK

11

RED HAT ENTERPRISE LINUX OPENSTACK PLATFORM


CEPH OBJECT GATEWAY

(RGW)


CERTIFIED!


USE CASE: CLOUD STORAGE

12

WEB APPLICATIONAPP

SERVERAPP

SERVERAPP

SERVER


CEPH OBJECT GATEWAY

(RGW)

CEPH OBJECT GATEWAY(RGW)

APP SERVER

S3/Swift S3/Swift S3/Swift S3/Swift


USE CASE: WEBSCALE APPLICATIONS

13

WEB APPLICATIONAPP

SERVERAPP

SERVERAPP

SERVER


APP SERVER

NativeProtocol

NativeProtocol

NativeProtocol

NativeProtocol

ROADMAPINKTANK CEPH ENTERPRISE


1.2 2.0

CEPH

CALAMARI

PLUGINS

Erasure Coding CephFS

Cache Tiering

User Quotas

UI Management Call Home Support Analytics

Hyper-V

Ceph 0.80 Firefly Ceph “H-Release”

May 2014 Q4 2014

HDFS Support

RHEL7 Support

VMware

NFS/CIFS

iSCSI

RBD Mirroring

SNMP

2015

QoS


USE CASE: PERFORMANCE BLOCK

15

KVM/RHEV

CACHE POOL (REPLICATED)

BACKING POOL (REPLICATED)

CEPH STORAGE CLUSTER



16

KVM/RHEV

CACHE: WRITEBACK MODE



Read/Write Read/Write



17

KVM/RHEV

CACHE: READ ONLY MODE



Write Write Read Read


USE CASE: ARCHIVE / COLD STORAGE

18

APPLICATION

CACHE POOL (REPLICATED)

BACKING POOL (ERASURE CODED)


ROADMAPINKTANK CEPH ENTERPRISE


1.2 2.0

CEPH

CALAMARI

PLUGINS

Cache Tiering

CephFS

User Quotas

RHEL7 Support

UI Management Call Home Support Analytics

Hyper-V

Ceph 0.77 Firefly Ceph 0.87 “H-Release”

April 2014 September 2014

HDFS

Erasure Coding

VMware

NFS/CIFS

iSCSI

QoS

SNMP

2015

RBD Mirroring

CEPH BLOCK DEVICE (RBD)


USE CASE: DATABASES

20

MYSQL / MARIADBRHEL7 RBD Kernel Module


NativeProtocol

NativeProtocol

NativeProtocol

NativeProtocol


USE CASE: HADOOP

21

POSIXRHEL7 CephFS Kernel Module


NativeProtocol

NativeProtocol

NativeProtocol

NativeProtocol

CEPH FILE SYSTEM (CEPHFS)

22

Training for Proof of Concept or Production

Users

Online Training for Cloud Builders and

Storage Administrators

Instructor led with virtual lab

environment

INKTANK UNIVERSITY


VIRTUAL PUBLIC

May 21 – 22

European Time-zone

June 4 - 5

US Time-zone

REGISTER TODAY:www.inktank.com/university

Ceph Reference Architectures and case study

Outline

• Planning your Ceph implementation• Choosing targets for Ceph deployments• Reference Architecture Considerations• Dell Reference Configurations• Customer Case Study

• Business Requirements– Budget considerations, organizational commitment– Avoiding lock-in – use open source and industry standards– Enterprise IT use cases– Cloud applications/XaaS use cases for massive-scale, cost-effective storage – Steady-state vs. Spike data usage

• Sizing requirements– What is the initial storage capacity?– What is the expected growth rate?

• Workload requirements– Does the workload need high performance or it is more capacity focused?– What are IOPS/Throughput requirements?– What type of data will be stored?

– Ephemeral vs. persistent data, Object, Block, File?

Planning your Ceph Implementation

How to Choose Targets Use Cases for Ceph

Virtualization and Private Cloud

(traditional SAN/NAS)

High Performance(traditional SAN)

PerformanceCapacity

NAS & Object Content Store(traditional NAS)

Cloud Applicatio

ns

Traditional IT

XaaS Compute CloudOpen Source Block

XaaS Content StoreOpen Source NAS/Object

Ceph Target

Ceph Target

• Tradeoff between Cost vs. Reliability (use-case dependent)

• Use the Crush configs to map out your failures domains and performance pools

• Failure domains – Disk (OSD and OS)– SSD journals– Node– Rack– Site (replication at the RADOS level, Block replication, consider latencies)

• Storage pools– SSD pool for higher performance– Capacity pool

• Plan for failure domains of the monitor nodes

• Consider failure replacement scenarios, lowered redundancies, and performance impacts

Architectural considerations – Redundancy and replication considerations

Server Considerations• Storage Node:

– one OSD per HDD, 1 – 2 GB ram, and 1 Gz/core/OSD, – SSD’s for journaling and for using the tiering feature in Firefly– Erasure coding will increase useable capacity at the expense of additional

compute load– SAS JBOD expanders for extra capacity (beware of extra latency and

oversubscribed SAS lanes)

• Monitor nodes (MON): odd number for quorum, services can be hosted on the storage node for smaller deployments, but will need dedicated nodes larger installations

• Dedicated RADOS Gateway nodes for large object store deployments and for federated gateways for multi-site

Networking Considerations• Dedicated or Shared network

– Be sure to involve the networking and security teams early when design your networking options

– Network redundancy considerations – Dedicated client and OSD networks– VLAN’s vs. Dedicated switches– 1 Gbs vs 10 Gbs vs 40 Gbs!

• Networking design– Spine and Leaf– Multi-rack– Core fabric connectivity– WAN connectivity and latency issues for multi-site deployments

Ceph additions coming to the Dell Red Hat OpenStack solutionPilot configuration Components

• Dell PowerEdge R620/R720/R720XD Servers• Dell Networking S4810/S55 Switches, 10GB• Red Hat Enterprise Linux OpenStack Platform • Dell ProSupport • Dell Professional Services • Avail. w/wo High Availability

Specs at a glance • Node 1: Red Hat Openstack Manager • Node 2: OpenStack Controller (2 additional

controllers for HA)• Nodes 3-8: OpenStack Nova Compute• Nodes: 9-11: Ceph 12x3 TB raw storage • Network Switches: Dell Networking S4810/S55• Supports ~ 170-228 virtual machines

Benefits • Rapid on-ramp to OpenStack cloud• Scale up, modular compute and storage

blocks • Single point of contact for solution support• Enterprise-grade OpenStack software

package

Storage bundles

Example Ceph Dell Server Configurations

Type Size Components

Performance 20 TB • R720XD• 24 GB DRAM• 10 X 4 TB HDD (data drives)• 2 X 300 GB SSD (journal)

Capacity 44TB /105 TB*

• R720XD• 64 GB DRAM• 10 X 4 TB HDD (data drives)• 2 X 300 GB SSH (journal)

• MD1200• 12 X 4 TB HHD (data drives)

Extra Capacity 144 TB /240 TB*

• R720XD• 128 GB DRAM• 12 X 4 TB HDD (data drives)

• MD3060e (JBOD)• 60 X 4 TB HHD (data drives)

• Dell & Red Hat & Inktank have partnered to bring a complete Enterprise-grade storage solution for RHEL-OSP + Ceph

• The joint solution provides:– Co-engineered and validated Reference Architecture – Pre-configured storage bundles optimized for

performance or storage– Storage enhancements to existing OpenStack Bundles– Certification against RHEL-OSP – Professional Services, Support, and Training

› Collaborative Support for Dell hardware customers› Deployment services & tools

What Are We Doing To Enable?

UAB Case Study

Overcoming a data delugeInconsistent data management across research teams hampers productivity

• Growing data sets challenged available resources

• Research data distributed across laptops, USB drives, local servers, HPC clusters

• Transferring datasets to HPC clusters took too much time and clogged shared networks

• Distributed data management reduced researcher productivity and put data at risk

Solution: a storage cloudCentralized storage cloud based on OpenStack and Ceph

• Flexible, fully open-source infrastructurebased on Dell reference design

− OpenStack, Crowbar and Ceph− Standard PowerEdge servers and storage− 400+ TBs at less than 41¢ per gigabyte

• Distributed scale-out storage provisions capacity from a massive common pool

− Scalable to 5 petabytes

• Data migration to and from HPC clusters via dedicated 10Gb Ethernet fabric

• Easily extendable framework for developing and hosting additional services

− Simplified backup service now enabled

“We’ve made it possible for users to satisfy their own storage needs with the Dell private cloud, so that their research is not hampered by IT.”

David L. Shealy, PhDFaculty Director, Research Computing

Chairman, Dept. of Physics

Building a research cloudProject goals extend well beyond data management

• Designed to support emerging data-intensive scientific computing paradigm– 12 x 16-core compute nodes– 1 TB RAM, 420 TBs storage– 36 TBs storage attached to each compute

node

• Virtual servers and virtual storage meet HPC− Direct user control over all aspects of the

application environment− Ample capacity for large research data sets

• Individually customized test/development/ production environments− Rapid setup and teardown

• Growing set of cloud-based tools & services− Easily integrate shareware, open source, and

commercial software

“We envision the OpenStack-based cloud to act as the gateway to our HPC resources, not only as the purveyor of services we provide, but also enabling users to build their own cloud-based services.”

John-Paul Robinson, System Architect

Research Computing System (Next Gen)

A cloud-based computing environment with high speed access to dedicated and dynamic compute resources

OpenStac

k node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

OpenStack node

HPCCluster

HPCCluster

HPC Storage

DDR Infiniband QDR Infiniband

10Gb Ethernet

Cloud services layerVirtualized server and storage computing cloud

based on OpenStack, Crowbar and Ceph

UAB Research Network

THANK YOU!

Contact InformationReach Kamesh and Neil for additional

information:Dell.com/OpenStack

Dell.com/Crowbar

Inktank.com/Dell

[email protected]

@kpemmaraju

[email protected]

@neilwlevine

Visit the Dell and Inktank booths in the OpenStack Summit Expo

Hall

Technology

New Ceph capabilities and Reference Architectures