Dell DX6000 Getting Started Manual

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Copyright © 2010 Caringo, Inc.All rights reserved 14Version 5.0December 2010• pxelinux.cfg if the node is booting from the networkIn 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 thelist 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 thecurrent list of adapter names and MAC addresses, hold down the Shift key while booting a node andenter utility at the prompt.DX Storage assigns device names to adapters based on a sorted list of MAC addresses. Devicenames begin with eth followed by an integer starting at 0. Adding network hardware can change theassignment 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,eth0append initrd=... castor_net=balance-rr:eth0,eth1append initrd=... castor_net=802.3ad:eth1,eth0append initrd=... castor_net=eth1,eth2append initrd=... castor_net=802.3ad:2.7. Proxying the Admin ConsoleAdministrators running DX Storage on a private, protected network may wish to allow clients onthe external network to view the DX Storage console without also providing them access to thenodes themselves on the private network. This can by accomplished by proxying the console froma privileged server that straddles the internal and external networks. For instance, from a serverrunning Apache, the following rewrite rule for URLs could be applied via the mod_rewrite module:RewriteEngine OnRewriteRule^.*/storage/([^/]+)/(.*)$http://$1:90/$2 [P,L]Please reference the Apache documentation for mod_rewrite for full details.2.8. IGMP Snooping SupportManaged switches commonly make use of IGMP snooping in order to direct multicast traffic totheir ports. By default, DX Storage uses IGMPv2 responses to host membership queries. TheigmpVersion parameter can be used to force the use of version 1, 2, or 3.