本文記錄nginx+redis+tomcat實現session共享的過程
nginx安裝：http://www.tkk7.com/fanyingjie/archive/2016/04/22/430204.html
redis安裝：http://www.tkk7.com/fanyingjie/archive/2016/04/22/430203.html
準備兩個tomcat，修改相應的端口
| 名稱 |
IP |
端口 |
tomcat版本 |
JDK |
| tomcat1 |
10.10.49.23 |
8080 |
7.0.40 |
1.7.0_25 |
| tomcat2 |
10.10.49.15 |
8081 |
7.0.40 |
1.7.0_25 |
修改nginx.conf加上：
- upstream backend {
- server 10.10.49.23:8080 max_fails=1 fail_timeout=10s;
- server 10.10.49.15:8081 max_fails=1 fail_timeout=10s;
- }
修改nginx.conf的location成
- location / {
- root html;
- index index.html index.htm;
- proxy_pass http://backend;
- }
啟動nginx。
下載tomcat-redis-session-manager相應的jar包，主要有三個：
wget https://github.com/downloads/jcoleman/tomcat-redis-session-manager/tomcat-redis-session-manager-1.2-tomcat-7-Java-7.jar
wget http://central.maven.org/maven2/redis/clients/jedis/2.5.2/jedis-2.5.2.jar
wget http://central.maven.org/maven2/org/apache/commons/commons-pool2/2.0/commons-pool2-2.0.jar
下載完成后拷貝到$TOMCAT_HOME/lib中
修改兩tomcat的context.xml:
- <Context>
-
-
- <WatchedResource>WEB-INF/web.xml</WatchedResource>
-
-
-
-
-
-
- <!-- Uncomment this to enable Comet connection tacking (provides events
- on session expiration as well as webapp lifecycle) -->
-
-
-
-
- <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
- <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"
- host="10.10.49.20"
- port="6379"
- database="0"
- maxInactiveInterval="60" />
- </Context>
在tomcat/webapps/test放一個index.jsp
- <%@ page language="java" %>
- <html>
- <head><title>TomcatA</title></head>
- <body>
-
- <table align="centre" border="1">
- <tr>
- <td>Session ID</td>
- <td><%= session.getId() %></td>
- </tr>
- <tr>
- <td>Created on</td>
- <td><%= session.getCreationTime() %></td>
- </tr>
- </table>
- </body>
- </html>
- sessionID:<%=session.getId()%>
- <br>
- SessionIP:<%=request.getServerName()%>
- <br>
- SessionPort:<%=request.getServerPort()%>
- <%
- //為了區分，第二個可以是222
- out.println("This is Tomcat Server 1111");
- %>
啟動tomcat，發現有異常：com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve 類找不到
分別打開三個jar包，確實沒有這個類，解決可以參考：
http://www.tkk7.com/fanyingjie/archive/2016/04/22/430205.html
通過訪問http://10.10.49.20/test/
刷新：
可以看到雖然Server從1111變為2222，但session的創建時間沒有變化，這就完成了session共享。