3.3 Load Balancer

© NTT Communications Corporation ALL Rights Reserved.

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3.3 Load Balancer v 1.0.4

Disclaimer: The English version of the service description is translated by machine

translation. If there is any discrepancy, the Japanese version takes prevalence.


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Table of Contents

Table of Contents ........................................................................................................................................................................... 2

1 Summary ................................................................................................................................................................................ 3

2 delivery function .................................................................................................................................................................. 4

2.1 delivery function ...................................................................................................................................................... 4

2.2 Configuration ............................................................................................................................................................ 5

2.3 Configuration Details ............................................................................................................................................... 5

2.4 About Applications ................................................................................................................................................... 6

2.4.1 Document ............................................................................................................................................... 6

2.4.2 parameter sheet .................................................................................................................................... 6

3 Fee ............................................................................................................................................................................................ 8

4 Standard Due Date .............................................................................................................................................................. 9

5 Related Menus .................................................................................................................................................................... 10

6 Constraints ........................................................................................................................................................................... 11

7 maintenance operation .................................................................................................................................................... 13

8 Service Level........................................................................................................................................................................ 14


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1 Summary

The Load Balancer menu provides the ability to load balance communications to the servers in the Service.

The Load Balancer feature is provided on a virtual appliance on a redundant host cluster. The virtual appliance

has two redundant configurations. No single configuration is provided.


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2 delivery function

2.1 delivery function

Menu ID Menu Name Description

N-IC-NW-

LB -1 T Load Balancer Setup

• Load Balancer default menu.

• Load Balancer is provided in a virtual appliance on a redundant

host cluster.

• Load Balancer is provided in a redundant configuration with two

virtual appliances.

• Load Balancers can be located in the DMZ Zone within the

customer tenant as well as in the Internal Zone.

• Set the Load Balancer based on the parameter sheet provided by

the customer. Set the following items in our company.

1. Setting Up a Redundant Configuration

2. network interfaces, configuring VLANs

3. Configuring Syslog Parameters (If log forwarding is

required to the customer's Syslog server)

4. Creating a server load balance rule

5. Configuring Server Health Checks

• For Replicated menus, set the DR settings.

N-IC-NW-

LBM -200

LO

Managed Load

Balancer 200 Mbps -

Local Only

• Load Balancer operation menu for Basic μVM.


virtual appliances.

• The maximum throughput is 200 Mbps.

• We will change the Load Balancer setting according to your

application.

• Monitor the Load Balancer.

N-IC-NW-

LBM -200

RE

Managed Load

Balancer 200 Mbp-

Replicated

• Load Balancer operation menu for Core μVM.

• Similar to Core μVM, this Load Balancer can be switched to the DR

site when the customer's system is switched to the DR site.


virtual appliances.

• The maximum throughput is 200 Mbps.


application.



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N-IC-NW-

LBM -1000

LO

Managed Load

Balancer 1 Gbps Local

Only

• Load Balancer operation menu for Basic μVM.


virtual appliances.

• The maximum throughput is 1 Gbps.


application.


N-IC-NW-

LBM -1000

RE

Managed Load

Balancer 1 Gbps

Replicated

• Load Balancer operation menu for Core μVM.

• Similar to Core μVM, this Load Balancer can be switched to the DR

site when the customer's system is switched to the DR site.


virtual appliances.

• The maximum throughput is 1 Gbps.


application.


2.2 Configuration

Load Balancers are located in the DMZ Zone and the Internal Zone.

Note that you cannot span two zones. If you want to balance each of the two zones, place a Load Balancer in

each zone.

The Load Balancer is placed in a one-arm configuration on the same segment as the server being balanced.

The Load Balancer translates the source address of the balanced communication to its own IP address.

2.3 Configuration Details

The following settings are made based on your application.

Summary Details

Managing Load Balancing

Policies

Create, modify, and delete real IP addresses and VIPs for the web server.

Configures the load-balancing method.

Configure persistence.


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Health Check

Management

Create, modify, and delete health checks to detect service responsiveness for servers

configured with load balancing policies.

Managing Network

Interfaces

Changes the configuration of network interface parameters (IP address, default

gateway).

Managing Log Settings Configure the Customer Syslog server to output server health check logs.

2.4 About Applications

2.4.1 Document

Document Description

order sheet Load Balancer Setup and Managed Load Balancer.

parameter

sheet

You will be asked to provide a Load Balancer at the time of initial setup and whenever you

request a configuration change during the usage period.

After changing the settings, our company will present a parameter sheet that reflects the

settings.

2.4.2 parameter sheet

The following parameters can be specified in the parameter sheet:.

Item Parameter Remarks

load balancing

policy

Virtual IP Address Virtual IP Address Required

real IP address Specify the IP address of the server to be balanced.

protocol Specify TCP/UDP and port

load balancing technique Choose from round robin/least connection/source IP

address HASH


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persistence

Choose from cookie insert/source IP address

For insert, the cookie name is ecl4erp

Health Check

Method

Choose normal or HTTP GET

⚫ normal - TCP port life-and-death monitoring via

TCP for TCP - ICMP life-and-death monitoring for

server nodes for UDP

⚫ HTTP GET For the HTTP protocol, you can select

HTTP GET for life-and-death monitoring Response

code is only 200

Spacing Default is 5 seconds Available from 1 to 3600 seconds

timeout Default is 2 seconds Available from 1 to 3600 seconds

Number of

attempts Default is 2. You can specify 1 ~ 127.

Network

Interfaces

IP Address/Netmask IP address/netmask required

Two share one IP address

Log Settings Syslog Server IP Address

Specify if you want to forward logs to the customer's

Syslog server.

Specifies the IP address of the Syslog server


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3 Fee

Menu ID Menu Name initial cost monthly cost

N-IC-NW-LB -1

T Load Balancer Setup

Per set of virtual load

balancers -

N-IC-NW-LBM -

200 LO

Managed Load Balancer 200

Mbps - Local Only

- Fixed monthly charge per set of

virtual load balancers *

N-IC-NW-LBM -

200 RE


Mbp-Replicated

N-IC-NW-LBM -

1000 LO

Managed Load Balancer 1 Gbps

- Local Only

N-IC-NW-LBM -

1000 RE

Managed Load Balancer 1 Gbps

- Replicated

*Tier 1 storage used separately by the Load Balancer is subject to billing. Please refer to the following restrictions

for details.


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4 Standard Due Date

Menu ID Menu Name delivery date

N-IC-NW-

LB -1 T

Load Balancer

Setup

It depends on the working volume. Standard volume (About 5 virtual IP

addresses), 10 business days after application is received (After confirming

on our company that there are no defects in the application contents).

Orders will be accepted until 14 o'clock on each business day, after which

they will be treated as received on the following business day. The day of

acceptance is counted as 0 day.

The DR setting of the Replicated menu is performed in this menu if the DR

Setup menu of Core μVM to be balanced is open. If DRSetup is not open, it

will be executed when you apply for the DR Setup menu.

N-IC-NW-

LBM -200

LO

Managed Load

Balancer 200 Mbps

- Local Only

The due date of a setup change order depends on the work volume.

Standard volume (About 5 virtual IP addresses), 5 business days after

application acceptance (After confirming on our company that there are no

defects in the application contents).

Orders will be accepted until 14 o'clock on each business day, after which

they will be treated as received on the following business day. The day of

acceptance is counted as 0 day.

N-IC-NW-

LBM -200

RE

Managed Load

Balancer 200 Mbp-

Replicated

N-IC-NW-

LBM -1000

LO

Managed Load

Balancer 1 Gbps -

Local Only

N-IC-NW-

LBM -1000

RE

Managed Load

Balancer 1 Gbps -

Replicated


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5 Related Menus

Menu ID Menu Name Related Service Category

N-IC-NW-LB -1 T Load Balancer Setup

• Network

• IaaS Compute μVM

• IaaS Storage

• DR Setup

N-IC-NW-LBM -200 LO Managed Load Balancer 200 Mbps - Local Only

N-IC-NW-LBM -200 RE Managed Load Balancer 200 Mbp-Replicated

N-IC-NW-LBM -1000 LO Managed Load Balancer 1 Gbps - Local Only

N-IC-NW-LBM -1000 RE Managed Load Balancer 1 Gbps - Replicated


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6 Constraints

• Load Balancer is provided in a redundant configuration of two virtual appliances. There is no single

configuration available.

• It is possible to change the usage menu after the start of usage, but you need to change it by our

company. Changes to the usage menu will cause downtime within hours.

• Menu changes may be made once a month or twice a year. If this limit is exceeded, a separate fee will be

charged.

• Load Balancer's Preempt feature is disabled.

• Load Balancers are located in the DMZ Zone and the Internal Zone.

• The Load Balancer can only distribute the load to servers in the zone in which it is deployed.

• Load Balancer cannot span two zones. If you want to balance each of the two zones, place a Load

Balancer in each zone.

• It does not provide WAF functionality.

• It does not provide DoS protection.

• It does not provide SSL termination.

• Customers cannot log in to the Load Balancer.

• Load Balancer virtual disks, as well as vswp, are created in Tier 1 Block Storage and are billed separately

as IaaS storage. The storage type and amount used are as follows.

Menu ID Menu Name Zone to

place Storage Used Amount used

N-IC-NW-LBM

-200 LO


Mbps - Local Only

DMZ DMZ - Tier 1 Block

Storage-Local Only

Virtual Disk:

20 GB

vswp — 8 GB

IZ ENT-Tier 1 Block Storage-

Local Only

N-IC-NW-LBM

-200 RE


Mbp-Replicated


Storage-Replicated 1


Replicated 1

N-IC-NW-LBM

-1000 LO


Gbps - Local Only DMZ

DMZ - Tier 1 Block

Storage-Local Only

Virtual Disk:

20 GB


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Local Only

vswp: 16 GB

N-IC-NW-LBM

-1000 RE


Gbps - Replicated


Storage-Replicated 1


Replicated 1

• The maximum throughput listed in each menu is not guaranteed.

• The source IP address of traffic destined for the server through the load balancer is translated to the IP

address of the network interface of the load balancer.

• The Load Balancer "X-Forwarded-For" feature is enabled. The source IP address of the client is embedded

in the "X-Forwarded-For" HTTP header field.

• You cannot specify a global IP address for all IP addresses configured in the Load Balancer.

• The Load Balancer can have a maximum of 15 virtual IP addresses and a maximum of 50 real IP

addresses.

• You cannot configure a load balancer with a static route.

• The default gateway for the Load Balancer is the Gateway device for the segment to which the Load

Balancer is connected.

• Load Balancer has only one network interface. Cannot be added.

• Load Balancer logs are not saved in this menu. It will not be disclosed or provided to customers. If

desired, log to the customer syslog server. Syslog may be lost due to various factors.

• The output log does not include the traffic log.

• The server health check result of the load balancer is not notified. If monitoring of health check results is

required, the customer must provide a Syslog server and specify the Syslog server to which the health

check log should be output in the parameter sheet. The customer then implements log monitoring of the

Syslog server.

• Replicated Load Balancer has a virtual machine group of 1 for DR. See "Part 11 Disaster Recovery" for

more information about virtual machine groups.

• You cannot specify a date and time for a Load Balancer configuration change.

• Load Balancer settings can be changed only once a month.

• If the upper limit of the number of virtual IP addresses and the number of setting changes is exceeded, a

separate fee will be charged.


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7 maintenance operation

• Load Balancer is monitored based on our company monitoring rules. Monitoring is 24 hours a day, 365

days a year.

• Ping the Admin context of the Load Balancer for life-and-death monitoring.

• If a failure affecting the customer service is detected due to both system failures, the customer will be

notified.

• If our company determines that a software update is required to provide this menu, it may perform Load

Balancer maintenance tasks. Service interruption may occur during maintenance work.


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8 Service Level

It is regarded as an error when both systems fail. Availability is 99.95%.

This menu does not cover SLAs.

3.3 Load Balancer

Documents

Transcript of 3.3 Load Balancer