Linux+nginx+tomcatロードバランシング,セッションを同期
1.nginxのインストール
#user nobody;
worker_processes 1;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
#log_format main '$remote_addr – $remote_user [$time_local] “$request" '
# '$status $body_bytes_sent “$http_referer" '
# '"$http_user_agent" “$http_x_forwarded_for"';
#access_log logs/access.log main;
sendfile on;
#tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65;
#gzip on;
upstream mogfs_cluster {
server 172.16.249.128:7001;
server 172.16.249.129:7001;
}
upstream jsp_server {
server 172.16.249.100:8080;
server 172.16.249.101:8080;
}
server {
listen 80;
# server_name localhost;
# location / {
# root html;
# index index.html index.htm;
# }
location ~* ^(/images/.*)$ {
mogilefs_tracker mogfs_cluster;
mogilefs_domain images;
mogilefs_noverify on;
mogilefs_pass $1 {
proxy_pass $mogilefs_path;
proxy_hide_header Content-Type;
proxy_buffering off;
}
}
location ~* ^(/text/.*)$ {
mogilefs_tracker mogfs_cluster;
mogilefs_domain text;
mogilefs_noverify on;
mogilefs_pass $1 {
proxy_pass $mogilefs_path;
proxy_hide_header Content-Type;
proxy_buffering off;
}
}
location ~* (\.jsp|do)$ {
proxy_pass http://jsp_server;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
2.JDKとTomcatのインストール
tomcat1の構成ファイル下記(server.xml
<?xml version=’1.0′ encoding=’utf-8′?>
<!–
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the “License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an “AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
–>
<!– Note: A “Server" is not itself a “Container", so you may not
define subcomponents such as “Valves" at this level.
Documentation at /docs/config/server.html
–>
<Server port="8005″ shutdown="SHUTDOWN">
<!– Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
–>
<!–APR library loader. Documentation at /docs/apr.html –>
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<!–Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html –>
<Listener className="org.apache.catalina.core.JasperListener" />
<!– Prevent memory leaks due to use of particular java/javax APIs–>
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!– Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
–>
<GlobalNamingResources>
<!– Editable user database that can also be used by
UserDatabaseRealm to authenticate users
–>
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>
<!– A “Service" is a collection of one or more “Connectors" that share
a single “Container" Note: A “Service" is not itself a “Container",
so you may not define subcomponents such as “Valves" at this level.
Documentation at /docs/config/service.html
–>
<Service name="Catalina">
<!–The connectors can use a shared executor, you can define one or more named thread pools–>
<!–
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150″ minSpareThreads="4″/>
–>
<!– A “Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL HTTP/1.1 Connector on port 8080
–>
<Connector port="8080″ protocol="HTTP/1.1″
connectionTimeout="20000″
redirectPort="8443″ />
<!– A “Connector" using the shared thread pool–>
<!–
<Connector executor="tomcatThreadPool"
port="8080″ protocol="HTTP/1.1″
connectionTimeout="20000″
redirectPort="8443″ />
–>
<!– Define a SSL HTTP/1.1 Connector on port 8443
This connector uses the JSSE configuration, when using APR, the
connector should be using the OpenSSL style configuration
described in the APR documentation –>
<!–
<Connector port="8443″ protocol="HTTP/1.1″ SSLEnabled="true"
maxThreads="150″ scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
–>
<!– Define an AJP 1.3 Connector on port 8009 –>
<Connector port="8009″ protocol="AJP/1.3″ redirectPort="8443″ />
<!– An Engine represents the entry point (within Catalina) that processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request, and passes them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html –>
<!– You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1″>
–>
<Engine name="Catalina" defaultHost="localhost">
<!–For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) –>
<!–
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
–>
<!– Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack –>
<Realm className="org.apache.catalina.realm.LockOutRealm">
<!– This Realm uses the UserDatabase configured in the global JNDI
resources under the key “UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. –>
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="www.essun.org" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<Context path="" docBase="essun" />
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="essun_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!– SingleSignOn valve, share authentication between web applications
Documentation at: /docs/config/valve.html –>
<!–
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
–>
<!– Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" –>
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
</Engine>
</Service>
</Server>)
サイトのディレクトリファイル下記:
[root@essun tomcat]# cd webapps/essun/
[root@essun essun]# ls
index.jsp WEB-INF
[root@essun essun]# ll WEB-INF/
total 8
drwxr-xr-x 2 root root 4096 May 2 11:07 classes
drwxr-xr-x 2 root root 4096 May 2 11:07 lib
[root@essun essun]# cat index.jsp
<%@ page language="java" %>
<html>
<head><title>arkgame.com essun.node2</title></head>
<body> <h1><font color="red">essun.node2.org</font></h1>
<table align="centre" border="1″>
<tr>
<td>Session ID</td>
<% session.setAttribute(“essun.org","essun.org"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
<p>
<a href="http://172.16.249.210/images/4.jpg">"Picture"</a></p>
<% out.println(“<img src=’http://172.16.249.210/images/3.jpg’>"); %>
</body>
</html>
tomcat2の設定、index.jspだけ異なる
[root@essun essun]# cat index.jsp
<%@ page language="java" %>
<html>
<head><title>essun.node1</title></head>
<body> <h1><font color="blue">essun.node1.org</font></h1>
<table align="centre" border="1″>
<tr>
<td>Session ID</td>
<% session.setAttribute(“essun.org","essun.org"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
<p>
<a href="http://172.16.249.210/images/4.jpg">"picture"</a></p>
<% out.println(“<img src=’http://172.16.249.210/images/3.jpg’>"); %>
</body>
</html>