Step 1 Download 3 software
1, Apache2.0.xx
2,Tomcat5.5.1x
3,mod_jk, it is connector of tomcat
Step 2 Install Apache2.0 at d:\Apache2, start service, then browse http://localhost for testing, you can see welcome page of apache.
Step 3 Install 2 Tomcats at d:\tomcat1 and d:\tomcat2, set JAVA_HOME, PATH, start tomcat service, then browse http://localhost:8080 for test, you can see welcome page of tomcat.
Step 4 Config apache:
Copy mod_jk.so to d:\apache2\modules.
Add “include D:\Apache2\conf\mod_jk.conf” in the end of d:\apache2\conf\httpd.conf
Add a new file: d:\Apache2\conf\mod_jk.conf, the content is as following:
|
# Load mod_jk module
LoadModule jk_module modules/mod_jk.so
# Where to find workers.properties
JkWorkersFile conf/workers.properties
# Where to put jk logs
JkLogFile logs/mod_jk.log
# Set the jk log level [debug/error/info]
JkLogLevel info
# Select the log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
# JkOptions indicate to send SSL KEY SIZE
，
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
# JkRequestLogFormat set the request format
JkRequestLogFormat "%w %V %T"
# Send servlet for context /examples to worker named ajp13
#JkMount /servlet/* ajp13
# Send JSPs for context /examples to worker named ajp13
JkMount /*.jsp loadbalancer
JkMount /*.htm loadbalancer
|
Add a new file d:\Apache2\conf\ workers.properties, the content is as following:
|
#
# workers.properties
#
# In Unix, we use forward slashes:
ps=/
# list the workers by name
worker.list=tomcat1, tomcat2, loadbalancer
# ------------------------
# First tomcat server
# ------------------------
worker.tomcat1.port=11009
worker.tomcat1.host=localhost
worker.tomcat1.type=ajp13
# Specify the size of the open connection cache.
#worker.tomcat1.cachesize
#
# Specifies the load balance factor when used with
# a load balancing worker.
# Note:
# ----> lbfactor must be > 0
# ----> Low lbfactor means less work done by the worker.
worker.tomcat1.lbfactor=100
# ------------------------
# Second tomcat server
# ------------------------
worker.tomcat2.port=12009
worker.tomcat2.host=localhost
worker.tomcat2.type=ajp13
# Specify the size of the open connection cache.
#worker.tomcat2.cachesize
#
# Specifies the load balance factor when used with
# a load balancing worker.
# Note:
# ----> lbfactor must be > 0
# ----> Low lbfactor means less work done by the worker.
worker.tomcat2.lbfactor=100
# ------------------------
# Load Balancer worker
# ------------------------
#
# The loadbalancer (type lb) worker performs weighted round-robin
# load balancing with sticky sessions.
# Note:
# ----> If a worker dies, the load balancer will check its state
# once in a while. Until then all work is redirected to peer
# worker.
worker.loadbalancer.type=lb
worker.loadbalancer.balanced_workers=tomcat1, tomcat2
#
# END workers.properties
#
|
Step 5 Config Tomcat
Modify conf/server.xml file
1 Add a unique jvmRoute to the Catalina engine
Near line 100, replace:
<Engine name="Standalone" defaultHost="localhost" debug="0">
with:
<Engine jvmRoute="tomcat1" name="Standalone" defaultHost="localhost" debug="0">
For tomcat2, put jvmRoute="tomcat2".
2 Change the control port
At line 13, replace:
<Server port="8005"
with:
<Server port="11005"
For the tomcat2 server, replace port 8005 with 12005. This will prevent the two servers from conflicting.
3 Change the AJP13 port
At line 75, in the AJP 13 connector definition, replace:
port="8009"
with:
port="11009"
For the tomcat2 server, replace port 8009 with 12009.
4 Disable the standalone HTTP port
We don't want or need our tomcat servers to directly respond to HTTP requests. So we comment out the HttpConnector section between lines and 58 in the server.xml file.
Example:
<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
<!--
<Connector className="org.apache.catalina.connector.http.HttpConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="60000"/>
-->
NOTE: If you don't comment this out, you will need to change the port numbers so they don't conflict between tomcat instances.
Step 6 Test
1 Create a file named index.jsp and put it in the /usr/local/tomcat1/webapps/ROOT directory:
|
<html>
<body bgcolor="red">
<center>
<%= request.getSession().getId() %>
<h1>Tomcat 1</h1>
</body>
</html>
|
2 Create a file named index.jsp and put it in the /usr/local/tomcat2/webapps/ROOT directory:
|
<html>
<body bgcolor="blue">
<center>
<%= request.getSession().getId() %>
<h1>Tomcat 2</h1>
</body>
</html>
|
3 Browse http://localhost/index.jsp