Dell DX6004S DX Object Storage Getting Started Guide - Page 17

Copyright © 2010 Caringo, Inc.

All rights reserved

14

Version 5.0

December 2010

•

pxelinux.cfg

if the node is booting from the network

In the configuration file, a kernel parameter named

castor_net

is included in the

append

clause.

castor_net

enables you to specify both the bonding mode for the adapters as well as a comma-

separated ordered list of the network devices that DX Storage can use, where the first device in the

list is the preferred interface that will be used whenever it is on-line.

The list of network devices must utilize the adapter names assigned by DX Storage. To find the

current list of adapter names and MAC addresses, hold down the Shift key while booting a node and

enter

utility

at the prompt.

DX Storage assigns device names to adapters based on a sorted list of MAC addresses. Device

names begin with

eth

followed by an integer starting at 0. Adding network hardware can change the

assignment order.

Some examples follow. The other portions of the

append

clause have been abbreviated for clarity.

Note the trailing colon after the bonding mode:

append initrd=...

castor_net=active-backup:eth1,eth0

append initrd=...

castor_net=balance-rr:eth0,eth1

append initrd=...

castor_net=802.3ad:eth1,eth0

append initrd=...

castor_net=eth1,eth2

append initrd=...

castor_net=802.3ad:

2.7. Proxying the Admin Console

Administrators running DX Storage on a private, protected network may wish to allow clients on

the external network to view the DX Storage console without also providing them access to the

nodes themselves on the private network. This can by accomplished by proxying the console from

a privileged server that straddles the internal and external networks. For instance, from a server

running Apache, the following rewrite rule for URLs could be applied via the mod_rewrite module:

<Location /storage/>

RewriteEngine

On

RewriteRule

^.*/storage/([^/]+)/(.*)$

http://$1:90/$2 [P,L]

</Location>

Please reference the

Apache documentation for mod_rewrite

for full details.

2.8. IGMP Snooping Support

Managed switches commonly make use of IGMP snooping in order to direct multicast traffic to

their ports. By default, DX Storage uses IGMPv2 responses to host membership queries. The

igmpVersion

parameter can be used to force the use of version 1, 2, or 3.

Section	Page
DX Object Storage Getting Started Guide	1
Table of Contents	3
Chapter 1. Welcome to DX Storage	4
1.1. Components	4
1.2. About this Document	4
1.2.1. Audience	4
1.2.2. Scope	4
Chapter 2. Network Infrastructure and Recommendations	5
2.1. About DX Storage in the Network	5
2.1.1. Sample Networks	5
2.1.2. Layer 3 Switching and Routing	7
2.1.3. Switching Hardware	7
2.1.4. Internet Deployments	9
2.2. Setting Up the Network for DX Storage	9
2.2.1. Network Summary	10
2.2.2. Recommended Infrastructure	10
2.3. Setting Up Network Services	10
2.3.1. Setting Up NTP for Time Synchronization	11
2.3.2. Setting Up DNS for Name Resolution	11
2.3.3. Preparing for Named Objects	12
2.3.4. Setting Up SNMP for Monitoring	12
2.3.5. Setting Up Network Load Balancing	13
2.4. Setting Up PXE Booting	13
2.4.1. Setting Up the DHCP Server for PXE Booting	13
2.4.2. Configuring the TFTP Server	14
2.4.2.1. Installing and Configuring TFTP	14
2.4.2.2. Creating the tftpboot Directory Hierarchy	14
2.4.2.3. Copying kernel and fsimage	14
2.4.2.4. DHCP and Boot Server Redundancy	15
2.5. Setting Up a Configuration File Server	15
2.6. Network Devices and Priority	16
2.7. Proxying the Admin Console	17
2.8. IGMP Snooping Support	17
Chapter 3. Hardware Considerations	18
3.1. Hardware Requirements and Recommendations	18
3.2. Hardware Setup	18
3.3. About Memory Effects on Node Storage	18
3.4. Stream Size Guidance	19
3.5. Adaptive Power Conservation	19
3.6. Proactive Power Conservation	20
3.7. Local Area Replication Using Subclusters	20
Chapter 4. Installing and Configuring DX Storage	22
4.1. Licensing	22
4.1.1. How Licensing Works	22
4.1.2. About licenseFileURL	23
4.1.3. About Licensed Capacity Monitoring	23
4.1.4. About Other Licensing Checks	23
4.1.5. Sample License	24
4.2. Configuring DX Storage	24
4.2.1. Editing node.cfg	25
4.2.2. Storage Volume Configuration	25
4.2.3. DHCP or Static Network	26
4.2.4. Administration Password	26
4.3. Booting DX Storage Nodes	26
4.4. Using Syslog	27

Dell DX6004S DX Object Storage Getting Started Guide - Page 17

Proxying the Admin Console, 2.8. IGMP Snooping Support

Page 17 highlights