Dell DX6000 Comment utiliser

Simple Content Storage Protocol

(SCSP) Proxy Release Notes

Version 1.2.1

Simple Content Storage Protocol (SCSP) Proxy Release Notes:

Version 1.2.1

No part of this document may be reproduced, transmitted, or transcribed without the written consent of Caringo, Inc.

January 2011

Table of Contents

1. Version 1.2.1 ....................................................................................................................... 1

1.1. Introduction ............................................................................................................... 1

1.2. Changes in Release 1.2.1 ......................................................................................... 1

1.3. Previous Features and Changes in Release 1.2 .......................................................... 1

1.4. Previous Changes in Release 1.1 .............................................................................. 1

1.4.1. Limitations of this Release .............................................................................. 1

January 2011

Chapter 1. Version 1.2.1

1.1. Introduction

The DX Object Storage SCSP Proxy is a reverse proxy that provides an interface to the storage

cluster. The proxy accepts HTTP requests from the host network, forwards them to the internal

storage cluster, handles redirects transparently, and then supplies the response back to the

requestor.

Thank you for using the DX Storage SCSP Proxy 1.2.1 release!

1.2. Changes in Release 1.2.1

The SCSP Proxy now better handles a DX Storage cluster being restarted while the Proxy is

running. In previous releases, the Proxy sometimes logged multiple unhandled exceptions when

attempting to contact a cluster that had been restarted, generating an excessive number of log

messages.

1.3. Previous Features and Changes in Release 1.2

Release 1.2 Beta 1 includes the following changes:

• The SCSP Proxy intercepts GET / and HEAD / requests and responds with information it stores

internally about itself and about the cluster for which it serves as a forward proxy. Only GET / and

HEAD / requests result in this type of special handling by the Proxy.

• The Proxy now supports the use of named objects in DX Storage version 5.0 and later.

• The AggregateInfo method can be used as follows with named objects:

{uuid [mutable|immutable] | url-encoded-name}

1.4. Previous Changes in Release 1.1

Release 1.1 had the following changes:

• The SCSP Proxy installer and uninstaller now properly updates the hosts.cfg file after an

upgrade.

• A proxy memory issue that could consume increasing amounts of RAM has been resolved.

1.4.1. Limitations of this Release

These are the known issues and operational limitations that exist in this 1.2 release of the DX

Storage SCSP Proxy.

•Proxy connection timeout. If no DX Storage nodes are online at the time the Proxy is started, an

HTTP client cannot connect to Proxy. The Proxy returns either a 504 (Gateway Timeout) error or

a connection timeout.

To troubleshoot connectivity issues, do the following in the order shown:

1. Verify whether or not the Proxy is running.

January 2011

ps -ef | grep scspproxy

If the Proxy is not running, start it as discussed in the SCSP Proxy Overview. After you start

the Proxy, try to access the DX Storage cluster using your client application.

2. If the Proxy is running, verify that at least one DX Storage node is running and that there is a

route between the Proxy's network and the storage cluster's network.

•Time Format Validation The SCSP Proxy validation mode supports validation of lifepoint time

inputs in RFC 1123 format.

•Validation mode limitations. In validation mode, the following are not currently validated: admin

query argument, domain query argument, and Host header.

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