Как повысить доступность ЦОД? Введение в балансировщики трафика. Часть 2

КАК ПОВЫСИТЬ
ДОСТУПНОСТЬ ЦОД?
ОБЗОР ПРОДУКТОВ
BROCADE SERVERIRON ADX
Vasiliy Soldatov, SrSE, Russia@CIS
vsoldato@brocade.com

Active-Active Data Center
Complete mobility of VMs across DCs
© 2012 Brocade Communications Systems, Inc.
Internet
Data Center A
Servers
Fibre Channel
SAN
Storage
Data Center B
SAN
Extension
Servers
Fibre Channel
SAN
Storage
SAN
Extension
Brocade
ADX
WAN
AA-
Storage
AA-
Storage
APP
OS
STORAGE
Clients
MLX-MCT
MLX-MCT
APP
OS
STORAGE
APP
OS
STORAGE
Hypervisor
Integration
GSLB
ControllerBrocade
ADX
Brocade
ADX
local
GSLB
local
GSLB

ADX GSLB Primer
How GSLB works
3/8/2012© 2012 Brocade Communications Systems, Inc. 3
•  Client asks DNS to resolve service
name to IP
•  Example: Client asks DNS for
www.brocade.com
•  DNS is configured with Multiple IP
addresses, each representing a
server farm (VIP)
•  ServerIron picks the BEST VIP for
Client, according to specified policy
and current metrics
•  Client then directly connects to the
BEST IP address for service

GSLB Overview
GSLB ADX gathers and compares metrics from all sites:
Server health check
Session table statistics and CPU load
Round Trip Time (RTT) between client and remote site
(Client’s TCP SYN and Client’s TCP ACK)
Geographic location
Site connection load
Remote ADXs preference value
Local least response selection
And others...
GSLB ADX adds intelligence to authoritative DNS
Evaluates possible IP address options
Best host is placed on top of the DNS returned list of IP addresses
Sets DNS TTL — Local DNS has most current information
GSLB uses proprietary communication between sites

Manageability:
Application Resource Broker (ARB)
Automatically respond to capacity surges with tight VM orchestration
1.  ARB directly gathers real-time
performance data from the
hypervisor / virtual machine
manager and the ADX.
2.  Based on your policy
thresholds, ARB tells the
hypervisor to power up
additional VMs until the
thresholds are satisfied. ARB
simultaneously tells the ADX
to start using these additional
servers.
For example, automatically
add capacity during an
unusually high traffic period.
3.  Once the condition subsides,
VMs are gradually returned to
a standby pool until the next
time they’re needed.
4.  ARB works as a VMware plug-
in or as a stand-alone server
with Xen and/or MS Hyper-V
1
2
3
4

Brocade Application Resource Broker
Matching data center capacity with end-user demand in real time
© 2012 Brocade Communications Systems, Inc. 6
Resource
Commissioning
when Load Increases
Brocade
ADX
VM VM VM VM
User
VMware
vCenter
Application
Resource
Broker
VM VM
Network Resources
VM Resources
Application Resources
Brocade
ADX
User Experience and
VM Resource Monitoring
VM VM
User
VMware
vCenter
Application
Resource
Broker
Resource
De-commissioning when
Load Decreases
User
Brocade
ADX
VM VM VM VM
VMware
vCenter
Application
Resource
Broker
August 23, 2012

ADX Hardware Platforms
3/8/2012 7© 2012 Brocade Communications Systems, Inc.
ADX 10000
ADX 4000
ADX 1000
ADX 1000F
• True network hardware for true hardware-based
performance – not commodity x86 components
• ADX chassis models use the same blades – investment
protection is designed into the platform
• True distributed computing running a Brocade network
OS – not commodity Linux software
• Capacity On Demand: increase capacity with a
software license -- No hardware rip & replace!
• Industry’s highest performance 1RU platform (10G) –
small doesn’t mean slow
• The 1U models use the same chipsets as the chassis
models – common code & config across all systems

ADX решает четыре основные задачи
Клиенты
Серверы
Интернет
1. Обеспечивают масштабирование серверных приложений и сетевой инфраструктуры
•  Распределение сессий между различными серверами при обслуживании
максимального числа клиентских соединений и транзакций
•  Распределение трафика приложений к доступным в настоящий момент серверам
приложений
2. Обеспечивают защиту серверов приложений и сервисов
•  Скрытие реальных серверов и инфраструктуры за виртуальными IP-адресами
•  Защита от атак (Denial-of-Service) из внешней и внутренней сети
3. Оптимизируют ресурсы серверов приложений
•  Освобождение серверов от трудоемких протоколов SSL и др.
4. Создают высокую доступность для серверов приложений
•  Модернизация ОС серверов без остановки сервисов и доступа
пользователей
•  Контроль состояния физических серверов и программных
приложений
•  Обеспечение отказоустойчивости в режимах Active-Active/
Standby
•  Обслуживание территориально распределенных сайтов
заказчика – GSLB
19.08.13

Throughput
(Gb/s)
# App.Cores
1008-1
1016-2
1016-4 & 1216-4
3/8/2012 9© 2012 Brocade Communications Systems, Inc.
4000: ASM4 bundle
4000: 1 x ASM8 module
4000: 2 x ASM8 modules
10000: 1 x ASM8
10000: 2 x ASM8
10000: 4 x ASM8
Capacity On
Demand
Start small, but
with big plans
Carrier-class
performance
1
2
4
8
16
32
2 4 9 9 17 35 3517 70
Performance: Pay-as-you-grow
Investment protection via simple in-place upgrades – no rip & replace!

Availability: ADX for Business Continuity
Non-stop application availability
4
3
2
1

Методы включения
One-Arm, In-Line
© 2010 Brocade Communications Systems, Inc. 19 August 2013 11

Availability & Control: Seamless IPv6 Transition
Several options for translating from one address family to another

3/8/2012
13
Control: ADX OpenScript
Open, flexible, and extensible scripting in a popular script language
Load
Balancing
Features
Server
Offload
Features
Security
Features
Optimizati
ons
Features
Monitoring &
Reporting
OpenScript Diagram
Clients Servers
Protocol
Events
API
Data
Inspection
API
Data
Manipulation
API
Brocade OpenScript
User-Provided Custom Script
1.  Augment built-in ADX services with your own
custom logic, written in the widely-used Perl
programming language.
2.  Scripts are pre-compiled for high performance,
unlike the slow script interpreters used by other
platforms.
1.  Performance Predictors to estimate
performance BEFORE script is deployed on live
traffic.
3.  Online ADP Community and resources to allow
for rapid & easy collaboration for new scripts.
Our standard Layer 7 Content Switching (CSW)
functionality is still available in the easy-to-read
CLI configuration syntax.
Not Into Scripting?
1
2
3
4

OpenScript:
The my.Brocade.com Community Site for sharing scripts and questions
http://community.brocade.com/openscript

Security
Comprehensive selection of security features
•  120 Million packets per second TCP SYN flood protection
•  18 Million DNS queries per second
•  SSL offload and acceleration
•  Both IPv4 and IPv6 Access Control Lists are implemented in
hardware – extremely useful in virtualized server environments to
enforce segmentation between VLANs
•  DNS Deep Packet Inspection can be used to filter and/or rate-
limit DNS requests
•  DNSSEC-aware GSLB and DNS DPI
•  Multiple forms of Network Address Translation (NAT) to cloak
servers and other internal hosts
•  Rate-limiting of any traffic type
•  Application filtering with OpenScript and CSW
1
2
3
4
5
6
7
8
9

Manageability Seamless integration with your network
1.  Web Graphical User Interface (GUI)
Comprehensive, simple
2.  Command-Line Interface (CLI)
Familiar syntax keeps it easy to
read
3.  XML API (SOAP)
Programmatic interface used by our
own GUI & tools
4.  SNMP v1/v2/v3, syslog, NTP, SSH,
telnet
5.  Role-based access control
6.  Simple upgrades
The same code runs on ALL models,
regardless of licenses and features
7.  Brocade Network Advisor (BNA)
Comprehensive network
management system (optional/
separate)
8.  HW-based sFlow & port mirroring
1
2
3
4
5
6
7
8

Brocade ADX Multitenancy
August 23, 2012© 2012 Brocade Communications Systems, Inc. - For Internal Use Only 17
Brocade ADX multitenant architecture enables
CONSOLIDATION FLEXIBILITY ISOLATION
Shrink infrastructure
cost of legacy ADCs
Mix and match any
tenants combination
Enable high-degree
of fault-tolerance
ADX Multitenant Architecture
CORE CORE CORE
Tenant 2
CORE
Tenant nTenant 1
The Flexibility of Virtualization w/ the Performance of Purpose-Built
Hardware
SIMPLICITY
Ease of operation
and management

Throughput
(Gb/s)
1 Core
2 Cores
4 Cores
Brocade ADX Portfolio
Price/Performance leadership with pay-as-you-grow deployment model
© 2013 Brocade Communications Systems, Inc. CONFIDENTIAL 18
ADX 4000 – 4 Cores
8 Cores
16 Cores
ADX 10000 – 8 Cores
16 Cores
32 Cores
M I D - R A N G E
H I G H - E N D
2 9 9 17 35 3517 70
E N T R Y -
L E V E L
Brocade ADX 1000
Brocade ADX 4000
Brocade ADX 10000
Brocade Virtual ADX
Price
4
1

Как повысить доступность ЦОД? Введение в балансировщики трафика. Часть 2

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Как повысить доступность ЦОД? Введение в балансировщики трафика. Часть 2