Administrator Guide

Preparing the Fluid Cache

Components

Before installing Fluid Cache, you must prepare the components of the Fluid Cache network: the servers,

cache devices, network cards, and switches.

The instructions that follow assume that you have an existing SAN configured and managed. All nodes in the

cache cluster must be connected to the SAN and visible on the Dell Compellent array. Instructions for racking

and cabling a SAN solution are beyond the scope of this document. For more information about installing,

upgrading, and configuring specific Dell components, see Related Documentation.

Topics:

• Checking Security Settings

• Checking Network Connections

• Checking Application Settings

• Preparing the Servers

• Preparing the Cache Devices

• Preparing the Cache Network Adapters

• Preparing the Cache Network Switch

• Configuring a Dell Networking Switch

Checking Security Settings

Before you start the installation, make sure that:

• If you are using servers that supports SSL v2, to prevent the servers from DROWN attack, upgrade the

OpenSSL version to OpenSSL 1.0.1e.

• Firewall settings do not block traffic or devices on the cache network, or on networks used by Fluid

Cache (refer to the table of Port Specifications below).

• SELinux, AppArmor, or other security frameworks do not limit applications or devices on the cache

network.

• iptables exceptions have been entered where appropriate. (Note that some default RHEL installations

may create an iptables entry that blocks Fluid Cache. See the troubleshooting topic

Cannot Configure Fluid Cache.

• If your avahi-daemon.conf file does not use the default settings, make sure that Disable Publishing is

set to no, Deny Interfaces does not list Fluid Cache interfaces, and Allow Interfaces is either

commented out or lists all Fluid Cache interfaces.

NOTE: If any of these settings are incorrect, the Fluid Cache cluster cannot be configured.

Preparing the Fluid Cache Components 14