Owners Manual

5
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.
Checking Security Settings
Before you start the installation, make sure that:
• 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.
Checking Network Connections
For Fluid Cache to function correctly, each Fluid Cache server must be able to communicate with other
network components. Make sure that the following ports are available:
Table 3. Ports Specifications
Interface Port number Port type
Fluid Cache cluster Configuration Manager 7449 TCP
Node Auto-Discovery functionality 5353 UDP
Web-based server status tool 6773 and 6774 TCP (https)
(optional) Web-based server status tool 8080 and 8082 TCP (http)
Fluid Cache to Enterprise Manager 3033 TCP
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