Tomcat7基于Redis的Session共享

男娘i 2022-06-04 05:52 197阅读 0赞

# Tomcat7/8基于Redis(Sentinel)的Session共享实战 #

> 笔者线上环境的多个tomcat需要共享session

## 基于epel源安装、启动redis ##

yum install redis -y && /etc/init.d/redis start

> redis具体使用配置参考：[http://blog.csdn.net/wh211212/article/details/52817923][http_blog.csdn.net_wh211212_article_details_52817923]，贴出笔者的redis.conf

bind 0.0.0.0
    protected-mode no
    port 6379
    tcp-backlog 511
    timeout 60
    tcp-keepalive 300
    daemonize yes
    supervised no
    pidfile /var/run/redis/redis_6379.pid
    loglevel notice
    logfile /var/log/redis/redis_6379.log
    databases 16
    save 60 100000
    stop-writes-on-bgsave-error yes
    rdbcompression yes
    rdbchecksum yes
    dbfilename dump_6379.rdb
    dir /var/lib/redis
    slave-serve-stale-data yes
    slave-read-only yes
    repl-diskless-sync no
    repl-diskless-sync-delay 5
    repl-disable-tcp-nodelay no
    slave-priority 100
    requirepass Aniuredis123
    rename-command CONFIG ""
    rename-command FLUSHALL ""
    maxclients 10000
    maxmemory 32gb
    maxmemory-policy volatile-lru
    maxmemory-samples 5
    appendonly yes
    appendfilename "appendonly_6379.aof"
    appendfsync everysec
    no-appendfsync-on-rewrite no
    auto-aof-rewrite-percentage 100
    auto-aof-rewrite-min-size 64mb
    aof-load-truncated yes
    lua-time-limit 5000
    slowlog-log-slower-than 10000
    slowlog-max-len 128
    latency-monitor-threshold 0
    notify-keyspace-events ""
    hash-max-ziplist-entries 512
    hash-max-ziplist-value 64
    list-max-ziplist-size -2
    list-compress-depth 0
    set-max-intset-entries 512
    zset-max-ziplist-entries 128
    zset-max-ziplist-value 64
    hll-sparse-max-bytes 3000
    activerehashing yes
    client-output-buffer-limit normal 0 0 0
    client-output-buffer-limit slave 256mb 64mb 60
    client-output-buffer-limit pubsub 32mb 8mb 60
    hz 10
    aof-rewrite-incremental-fsync yes

## 安装并配置Tomcat ##

> 在服务器上安装并配置两个tomcat7，命令为tomcat7-7081、tomcat7-7082

wget http://mirrors.shuosc.org/apache/tomcat/tomcat-7/v7.0.82/bin/apache-tomcat-7.0.82.tar.gz -P /usr/local/src
    mkdir /opt/tomcats &&  cd /usr/local/src && tar zxf apache-tomcat-7.0.82.tar.gz -C /opt/tomcats
    cd /opt/tomcats && mv apache-tomcat-7.0.82 tomcat7-7082 && cp -r tomcat7-7082 tomcat7-7081

> 更改两个tomcat的server.xml,修改端口

*  编制两个index.jsp页面，分别放入tomcat7-7081\\webapps\\ROOT、tomcat7-7082\\webapps\\ROOT目录下，index.jsp页面内容如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>获取session id</title>
    </head>
    <body>
        Session Id : <%= request.getSession().getId() %>
    </body>
    </html>

> Tomcat部分配置完成继续下面操作

## 下载必须jar文件 ##

*  下载最新版本的JEDIS（Redis Java客户端），[https://github.com/xetorthio/jedis/releases][https_github.com_xetorthio_jedis_releases]
 *  Tomcat Redis会话管理器（Apache Tomcat的Redis支持的非粘性会话存储）[https://github.com/jcoleman/tomcat-redis-session-manager/downloads][https_github.com_jcoleman_tomcat-redis-session-manager_downloads]
 *  Apache Commons Pool [http://commons.apache.org/proper/commons-pool/download\_pool.cgi][http_commons.apache.org_proper_commons-pool_download_pool.cgi]

> jar下载： 链接: [https://pan.baidu.com/s/1dEDXWf3][https_pan.baidu.com_s_1dEDXWf3] 密码: gik6

*  将下载的jar拷贝到$\{TOMCAT\_HOME\}/lib下

[root@yunwei src]# cp commons-pool2-2.2.jar jedis-2.9.0.jar tomcat-redis-session-manage-tomcat7.jar /opt/tomcats/tomcat7-7081/lib/
    [root@yunwei src]# cp commons-pool2-2.2.jar jedis-2.9.0.jar tomcat-redis-session-manage-tomcat7.jar /opt/tomcats/tomcat7-7082/lib/

## 配置Tomcat ##

> 编辑$\{TOMCAT\_HOME\}/conf/context.xml，在context中加入

<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
        <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"
           host="localhost"
           port="6379"
           password='Aniuredis123'
           database="0"
           maxInactiveInterval="60" />
    
    # 贴下使用redis sentinel的配置
           
         <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />        
        <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" 
            maxInactiveInterval="60"
            sentinelMaster="mymaster"
            sentinels="127.0.0.1:26379,127.0.0.1:26380,127.0.0.1:26381,127.0.0.1:26382"
            />

> 两个tomcat都需要进行配置，配置完成启动tomcat界面如下：

Dec 06, 2017 11:10:25 AM org.apache.catalina.startup.TldConfig execute
    INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
    Dec 06, 2017 11:10:25 AM com.orangefunction.tomcat.redissessions.RedisSessionManager startInternal
    INFO: Attached to RedisSessionHandlerValve
    Dec 06, 2017 11:10:25 AM com.orangefunction.tomcat.redissessions.RedisSessionManager initializeSerializer
    INFO: Attempting to use serializer :com.orangefunction.tomcat.redissessions.JavaSerializer
    Dec 06, 2017 11:10:25 AM com.orangefunction.tomcat.redissessions.RedisSessionManager startInternal
    INFO: Will expire sessions after 1800 seconds
    Dec 06, 2017 11:10:25 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deployment of web application directory /opt/tomcats/tomcat7-7081/webapps/examples has finished in 921 ms
    Dec 06, 2017 11:10:25 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deploying web application directory /opt/tomcats/tomcat7-7081/webapps/host-manager
    Dec 06, 2017 11:10:25 AM org.apache.catalina.session.ManagerBase setMaxInactiveInterval
    WARNING: Manager.setMaxInactiveInterval() is deprecated and calls to this method are ignored. Session timeouts should be configured in web.xml or via Context.setSessionTimeout(int timeoutInMinutes)
    Dec 06, 2017 11:10:25 AM org.apache.catalina.startup.TldConfig execute
    INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
    Dec 06, 2017 11:10:25 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deployment of web application directory /opt/tomcats/tomcat7-7081/webapps/host-manager has finished in 341 ms
    Dec 06, 2017 11:10:25 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deploying web application directory /opt/tomcats/tomcat7-7081/webapps/ROOT
    Dec 06, 2017 11:10:25 AM org.apache.catalina.session.ManagerBase setMaxInactiveInterval
    WARNING: Manager.setMaxInactiveInterval() is deprecated and calls to this method are ignored. Session timeouts should be configured in web.xml or via Context.setSessionTimeout(int timeoutInMinutes)
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.TldConfig execute
    INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
    Dec 06, 2017 11:10:26 AM com.orangefunction.tomcat.redissessions.RedisSessionManager startInternal
    INFO: Attached to RedisSessionHandlerValve
    Dec 06, 2017 11:10:26 AM com.orangefunction.tomcat.redissessions.RedisSessionManager initializeSerializer
    INFO: Attempting to use serializer :com.orangefunction.tomcat.redissessions.JavaSerializer
    Dec 06, 2017 11:10:26 AM com.orangefunction.tomcat.redissessions.RedisSessionManager startInternal
    INFO: Will expire sessions after 1800 seconds
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deployment of web application directory /opt/tomcats/tomcat7-7081/webapps/ROOT has finished in 101 ms
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deploying web application directory /opt/tomcats/tomcat7-7081/webapps/docs
    Dec 06, 2017 11:10:26 AM org.apache.catalina.session.ManagerBase setMaxInactiveInterval
    WARNING: Manager.setMaxInactiveInterval() is deprecated and calls to this method are ignored. Session timeouts should be configured in web.xml or via Context.setSessionTimeout(int timeoutInMinutes)
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.TldConfig execute
    INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
    Dec 06, 2017 11:10:26 AM com.orangefunction.tomcat.redissessions.RedisSessionManager startInternal
    INFO: Attached to RedisSessionHandlerValve
    Dec 06, 2017 11:10:26 AM com.orangefunction.tomcat.redissessions.RedisSessionManager initializeSerializer
    INFO: Attempting to use serializer :com.orangefunction.tomcat.redissessions.JavaSerializer
    Dec 06, 2017 11:10:26 AM com.orangefunction.tomcat.redissessions.RedisSessionManager startInternal
    INFO: Will expire sessions after 1800 seconds
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deployment of web application directory /opt/tomcats/tomcat7-7081/webapps/docs has finished in 121 ms
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deploying web application directory /opt/tomcats/tomcat7-7081/webapps/manager
    Dec 06, 2017 11:10:26 AM org.apache.catalina.session.ManagerBase setMaxInactiveInterval
    WARNING: Manager.setMaxInactiveInterval() is deprecated and calls to this method are ignored. Session timeouts should be configured in web.xml or via Context.setSessionTimeout(int timeoutInMinutes)
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.TldConfig execute
    INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.HostConfig deployDirectory
    INFO: Deployment of web application directory /opt/tomcats/tomcat7-7081/webapps/manager has finished in 95 ms
    Dec 06, 2017 11:10:26 AM org.apache.coyote.AbstractProtocol start
    INFO: Starting ProtocolHandler ["http-bio-7081"]
    Dec 06, 2017 11:10:26 AM org.apache.catalina.startup.Catalina start
    INFO: Server startup in 1685 ms

![这里写图片描述][SouthEast]

## 测试结果 ##

> 打开浏览器，输入[http://192.168.1.137:7082/,http://192.168.1.137:7081/][http_192.168.1.137_7082_http_192.168.1.137_7081],如下：

![这里写图片描述][SouthEast 1]

> 获取的SESSIONID是同一个，说明成功了，其中71D850EDC7C97D9F87035C6A5777E263就是SESSIONID

*  连接Redis查看已经存在的sessionid

[root@yunwei src]# redis-cli -a Aniuredis123 -h 127.0.0.1 -p 6379
    127.0.0.1:6379> keys 71D850EDC7C97D9F8*
    1) "71D850EDC7C97D9F87035C6A5777E263"

> 笔者的redis做了持久化

## 参考链接 ##

*  [https://dzone.com/articles/setup-redis-session-store][https_dzone.com_articles_setup-redis-session-store]
 *  [http://www.cnblogs.com/linjiqin/p/5761281.html][http_www.cnblogs.com_linjiqin_p_5761281.html]

[http_blog.csdn.net_wh211212_article_details_52817923]: http://blog.csdn.net/wh211212/article/details/52817923
[https_github.com_xetorthio_jedis_releases]: https://github.com/xetorthio/jedis/releases
[https_github.com_jcoleman_tomcat-redis-session-manager_downloads]: https://github.com/jcoleman/tomcat-redis-session-manager/downloads
[http_commons.apache.org_proper_commons-pool_download_pool.cgi]: http://commons.apache.org/proper/commons-pool/download_pool.cgi
[https_pan.baidu.com_s_1dEDXWf3]: https://pan.baidu.com/s/1dEDXWf3
[SouthEast]: /images/20220604/3b0c0783a11f4c02b1310cb309c935db.png
[http_192.168.1.137_7082_http_192.168.1.137_7081]: http://192.168.1.137:7082/,http://192.168.1.137:7081/
[SouthEast 1]: /images/20220604/d8e0e26f91d248778f1ce4f77ba1f2be.png
[https_dzone.com_articles_setup-redis-session-store]: https://dzone.com/articles/setup-redis-session-store
[http_www.cnblogs.com_linjiqin_p_5761281.html]: http://www.cnblogs.com/linjiqin/p/5761281.html