Dell DX6004S Руководство по установке и настройке - Страница 26

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Dell DX6004S Руководство по установке и настройке
Chapter 4. Running and Managing DX Storage
The CSN currently provides network and configuration services for a single DX Storage cluster with
nodes on the shared private network.

4.1. Adding DX Storage Nodes

Upon boot of a new node onto the internal network via network boot, the CSN will automatically
provide the needed configuration and software. With subsequent boots of a previously known
node on the network, the CSN will recognize the DX Storage node and use its previously assigned
configuration to boot the node.
As of the 2.0 release, the CSN will automatically configure DX Storage in multi-server mode to take
advantage of all available CPU cores. The number of DX Storage processes assigned to each node
is dynamically determined based on system information provided by the node when it requests its
network boot configuration. IP addresses are statically assigned to each node and then maintained
by a CSN process that pings each node every 5 minutes. If a node has not responded to a ping
in an hour, its IP address will be released and a new one assigned if the node should come back
online at a later time. The maximum number of allowed processes per node (no default), the interval
at which nodes are pinged (default 5 minutes) and the length of time the CSN waits before releasing
the IP address for a node that has not responded (default 1 hour) are all configurable. Please
contact your support representative for instructions on modifying these parameters.
A list of all IP address assignments and the associated node's MAC address can be obtained by
running the following command line script:
/opt/caringo/csn/bin/ip-assignments
MAC addresses will appear multiple times in the output if the nodes have enough CPU cores to
support more than one DX Storage process. The script will not return any results if no storage nodes
have been booted yet from a CSN running 2.x software. Node IPs assigned previously under CSN
1.0 will not appear in the script output until the nodes have been rebooted under a 2.x CSN.

4.2. Updating Configuration Settings

In addition to the default network configuration information gathered from the initial configuration
of the CSN, the CSN Console allows editing of several additional configuration parameters.
Any changes to these settings will not take effect until the cluster is rebooted to pick up the new
configuration.
Copyright © 2010 Caringo, Inc.
All rights reserved
23
Version 2.0
December 2010