Administrator Guide

Also, check for iptables entries that may be blocking Fluid Cache network traffic. Note
that some default installations for RHEL create an iptables entry for ib_send_bw that
prevents connections to another server and thus blocks Fluid Cache network traffic.
Possible Cause One of the ports required by Fluid Cache is in use by another process.
Solution Refer to the required ports listed in Checking Network Connections and reassign ports
as needed.
• Check which ports are in use by logging in as a root user and running this
command:
/bin/netstat -tulpn
• To change the ports used by Fluid Cache, open the /etc/services file on each
server and add the following information, modifying the port numbers as needed:
fldc-http 8080/tcp # Fluid Cache CFM Web Server
fldc-https 6773/tcp # Fluid Cache CFM Web Server
fldca-http 8082/tcp # Fluid Cache Agent Web Server
fldca-https 6774/tcp # Fluid Cache Agent Web Server
The existing entry for the mDNS service on UDP port 5353 may also need to be
modified. It is used by the Avahi daemon, which is required by Fluid Cache.
• After changing the ports, restart the Fluid Cache agent service by running the
following command:
service fldc_agentd restart
NOTE: Port 6774 is used to communicate with Enterprise Manager. If you change
the port number for fldca-https in the etc/services file, you must also
configure Enterprise Manager to use the new port number.
NOTE: Port 3033 is used to communicate with Enterprise Manager and Storage
Center. To configure those applications to use a different port, refer to the
corresponding Administrator’s Guide. After a new port is configured in Enterprise
Manager or Storage Center, Fluid Cache automatically uses the new port.
NOTE: Port 7449 is required by Fluid Cache. If another application is using this
port, configure that application to use a different port.
Possible Cause The network adapters are not configured for Ethernet functionality, and so the
ethtool and ifconfig commands cannot be used to configure the network
adapters.
Solution On each node in the Fluid Cache cluster, run the command:
connectx_port_config
In the configuration file, if the entry for ConnectX PCI Devices references auto or ib,
change the setting for Select mode for port x to 2.
Troubleshooting Fluid Cache Installations 46