PERSISTENT STORAGE FOR CONTAINERS

Ric Wheeler, Sr. Director, Red Hat Storage Engineering Vijay Bellur, Lead Architect, Red Hat Gluster Storage

What Are Linux Containers?

Software packaging concept that typically includes an

application and all of its runtime dependencies

• HIGHER quality software releases

• SHORTER test cycles

• EASIER application management

CONTAINER CONTAINER

APP

LIBS

HOST OS

SERVER

APP

LIBS BENEFITS

Greater Portability, Automation, and Integration

PUSH IMAGE

CODE REGISTRY

CODE & BUILD TEST DEPLOY

PULL IMAGE

How Did We Get Here?

Development

Model

Application

Architecture

Deployment &

Packaging

Application

Infrastructure Storage

Waterfall

Agile

Monolithic

N-tier

Bare Metal

Virtual Servers

Data Center

Hosted

Scale Up

Scale Out

DevOps MicroServices Containers Hybrid Cloud Storage as

a Service

WHY PERSISTENT STORAGE FOR CONTAINERS?

“For which workloads or application use cases have you used/do you anticipate to use containers?”

Data Apps Cloud Apps

Systems of

Engagement

Systems of

Record Web and Commerce

Software Mobile Apps

Social Apps

77% 71%

62% 62% 57% 52%

46%

Base: 194 IT operations and development decision-makers at enterprise in APAC, EMEA, and North America Source: A commissioned study conducted by Forrester Consulting on behalf of Red Hat, January 2015

Scalable, Cost Effective, Distributed Storage for Containers

CHOICE OF VOLUME PLUGINS Red Hat’s Upstream Contributions

AUTOMATED CONFIGURATION

SINGLE CONTROL PANEL

CHOICE OF PERSISTENT STORAGE

Ceph RBD

Amazon EBS

Fiber Channel

GCE

iSCSI

NFS

GlusterFS

DRIVING THE FUTURE OF STORAGE

Nov 2015 Mar 2016 Summer 2016

CONVERGENCE OF STORAGE AND COMPUTE

RHGS Container

• Dedicated storage cluster for

containerized

• and PaaS environments

• Supported for OpenShift Enterprise

• Containerized Red Hat Gluster Storage serving

• storage from a dedicated storage cluster

• Optimized for applications running on RHEL 7,

• OpenShift Enterprise, and RHEL Container Host

• Containerized Red Hat Gluster Storage

inside OpenShift Enterprise alongside

application containers

• Red Hat Gluster Storage cluster

comprised of disks from multiple container

cluster nodes

CONTAINER READY STORAGE CONTAINERIZED STORAGE CONTAINER NATIVE STORAGE

MySQL Container

CONTAINER READY STORAGE

CONTAINER NODE 1

CONTAINER NODE 2

CONTAINER NODE 1

CONTAINER NODE 3

NGINX Container

NGINX Container

NGINX Container

CONTAINERIZED RED HAT GLUSTER STORAGE

CONTAINER NODE 1

CONTAINER NODE 2

NGINX Container

NGINX Container

CONTAINERIZED

RED HAT GLUSTER

STORAGE

OPENSHIFT NODE 2

CONTAINER-NATIVE STORAGE

Lower TCO

Unified Orchestration

Ease of Use

Greater control

OPENSHIFT NODE 3

OPENSHIFT NODE 1

RHGS Container RHGS Container

OPENSHIFT NODE 4

MASTER NGINX Container NGINX Container

Elasticsearch Container

RHGS Container

CONTAINER TECHNOLOGIES

DevOps Tools and User Experience

Language Runtimes and Middleware

Databases and Other Services

Container Orchestration and Management

Container API Container Host

Storage

CUSTOMER SUCCESS

APPLICATION

SERVERS

CONVERGED

SERVERS

STORAGE

SERVERS

NEW AGILITIES allowed telco to bring a new offering to market faster and cheaper

LOWER COST than traditional storage and avoiding endless commitment to proprietary vendors

FLEXIBLE geo-replicated architecture can grow/shrink dynamically

OPTION to be tuned for price or performance

BENEFITS

CONTAINERIZED STORAGE

Applications and storage can co-exist on the same hardware

Higher server utilization and lowers operational costs

Storage generates only 3%-10% overhead on compute

servers

WHAT’S THE BIG DEAL?

BARE METAL VIRTUALIZATION CONTAINERS

Deploy in Days or Weeks

Single App Instance

Deploy in Hours or Days

10s or 100s of Apps

Deploy in Seconds or Minutes

100s or 1000s of Apps

APP

LIBS

HOST OS

SERVER

HOST OS

SERVER

HOST OS, SHARED SVCS

SERVER, CLOUD

APP APP

LIBS LIBS

GUEST OS GUEST OS

VIRTUAL

MACHINE

VIRTUAL

MACHINE

APP APP

LIBS LIBS

CONTAINER CONTAINER

HYPERVISOR

LIGHTWEIGHT VIRTUALIZATION

Less Overhead

Faster Instantiation

Better Isolation

Easier Scale

SERVER

HYPERVISOR

HOST OS HOST OS, SHARED SVCS

SERVER, CLOUD

VIRTUAL

MACHINE

VIRTUAL

MACHINE

CONTAINER CONTAINER

APP

LIBS

APP

LIBS

GUEST OS GUEST OS

APP

LIBS

APP

LIBS

CONTAINERS VS. VIRTUALIZATION

Containers Virtualization

• Abstracts OS Kernel

• Limited to Linux

• Unified CPU and memory mgr

• Up in seconds

• 100s or 1000s

• Multiple copies of single app

• Abstracts entire device

• Any Operating System

• Separate CPU and memory mgrs

• Up in hours or days

• 10s or 100s

• Multiple apps

VS

WHAT’S AHEAD? Dynamic Provisioning and New Workload Support

2016

E2E Dynamic Provisioning support

Applications attach (or detach) to RHGS volumes as needed with zero

admin intervention dynamically

Usability improvements

Address customer pain point of static/inflexible storage provisioning

Persistent Storage for OpenShift 3.4 Persistent Storage for OpenShift 3.5+

Support for containerized database workloads via non-

shared persistent storage

Support for containerized databases such as MySql, PostGres, and MariaDB

2017

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