TIBCO Spotfire Server 3.2.2 - TIBCO Product Documentation

Load Balancing
# Load the mod_jk module
LoadModule jk_module modules/mod_jk.so
# Load the workers configuration
JkWorkersFile conf/workers.properties
# The mod_jk module's log file
JkLogFile logs/mod_jk.log
# The mod_jk module's log level (trace, debug, info, warn, error)
JkLogLevel info
# Let the load balancer worker handle all requests to the TSS web applications
JkMount /spotfire loadbalancer
JkMount /spotfire/* loadbalancer
# Define Apache environment variables to be exported by mod_jk to Tomcat web
applications
JkEnvVar REMOTE_USER
JkEnvVar SSL_CLIENT_CERT
#JkEnvVar SSL_CLIENT_CERT_CHAIN
#JkEnvVar SSL_CLIENT_S_DN
#JkEnvVar SSL_CLIENT_S_DN_CN
5 Make sure that the Apache httpd configuration includes the file mod_jk.conf.
6 Restart Apache httpd. Check for any startup errors.
7 Make sure you are able to connect to each server using both HTTP on the ports
defined in the installation process, and using AJP on port 8009.
8 To achieve a higher level of security, it is possible to make the load balancer
authenticate when it talks to the Spotfire servers. See the section “Load Balancer AJP
Keyword Restriction” on page 63 for more information about this.
Note: It might be a good idea to start by setting up one Spotfire Server to be load
balanced. When you see that traffic is being forwarded as it should, add the other
servers.
It is also possible to forward traffic from the load balancer to the Configuration
Console. See the section “Forwarding Traffic from the Load Balancer to the
Configuration Console” on page 99 for instructions on how to set this up.
7.5 Kerberos Authentication
In a clustered environment where Kerberos authentication is used to authenticate
users, the load balancer forwards all Kerberos authentication information to the
Spotfire Servers. No configuration on the load balancer is needed for this, but there
are certain considerations that must be taken into account when Kerberos
authentication is set up:
• Two Service Principal Names must be created for each Spotfire Server as well as
for the load balancer.
TIBCO Spotfire® Server 3.2.2 61 (144)