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Tomcat集群架构介绍

Tomcat集群架构介绍

作者: 我是李小胖 | 来源:发表于2019-11-29 20:09 被阅读0次

    1.Tomcat集群架构介绍

    image

    2.Nginx+Tomcat集群架构实战

    [root@lb01 conf.d]# cat proxy_zrlog.oldxu.com.conf 
    upstream  zrlog {
        server 172.16.1.7:8080;
        server 172.16.1.8:8080;
        }
    server {
        listen 80;
        server_name zrlog.oldxu.com;
    
        location / {
            proxy_pass http://zrlog;
            include proxy_params;
        }
    }
    
    

    3.Nginx+Tomcat集群会话共享 redis cluster

    session测试代码用例
    1.配置虚拟主机

    [root@web01 conf]# vim /soft/tomcat/conf/server.xml 
    <!--session站点-->
      <Host name="session.oldxu.com"  appBase="/code/session"
            unpackWARs="true" autoDeploy="true">
      </Host>
    
    

    2.准备index.jsp文件(为了区分需要调整输出的web01 web02)

    [root@web01 conf]# cat /code/session/ROOT/index.jsp 
    <body>
    <%
    //HttpSession session = request.getSession(true);
    System.out.println(session.getCreationTime());
    out.println("<br> web01 SESSION ID:" + session.getId() + "<br>");
    out.println("Session created time is :" + session.getCreationTime()
    
    - "<br>");
      %>
      </body>
    
    

    3.下载TomcatClusterRedisSessionManager (所有web集群都需要操作) GitHub地址

    [https://github.com/ran-jit/tomcat-cluster-redis-session-manager](https://github.com/ran-jit/tomcat-cluster-redis-session-manager)
    
    [root@tomcat ~]# wget [https://github.com/ran-jit/tomcat-cluster-redis-session-manager/releases/download/3.0.3/tomcat-cluster-redis-session-manager.zip](https://github.com/ran-jit/tomcat-cluster-redis-session-manager/releases/download/3.0.3/tomcat-cluster-redis-session-manager.zip)  
    [root@tomcat ~]# unzip tomcat-cluster-redis-session-manager.zip  
    [root@web01 ~]# cd tomcat-cluster-redis-session-manager
    
    

    4.下载解压后,继续部署

    1.拷贝jar包  
    [root@web01 tomcat-cluster-redis-session-manager]# cp lib/* /soft/tomcat/lib/
    
    2.拷贝tomcat连接redis配置文件  
    [root@web01 tomcat-cluster-redis-session-manager]# cp conf/redis-data-cache.properties /soft/tomcat/conf/
    
    3.修改redis-data-cache.properties  
    [root@web01 ~]# vim /soft/tomcat/conf/redis-data-cache.properties  ...  redis.hosts=172.16.1.51:6379  redis.password=123456  #密码
    
    4.添加如下两行至tomcat/conf/context.xml  
    [root@web01 ~]# vim /soft/tomcat/conf/context.xml
    <Context>
        .....
        <Valve className="tomcat.request.session.redis.SessionHandlerValve" />
        <Manager className="tomcat.request.session.redis.SessionManager" />
        ....
    </Context>
    
    

    5.修改tomcat/conf/web.xml 配置文件session的超时时间 ,单位是分钟

        <session-config>
                <session-timeout>60</session-timeout>       #根据情况调整
        </session-config>
    
    

    6.安装redis,当然也可以自行搭建redis集群,anyway

    [root@redis ~]# yum install redis -y
    [root@redis ~]# cat /etc/redis.conf
    ...
    bind 172.16.1.51 127.0.0.1
    requirepass 123456              #如果不需要密码,则不要配置
    ...
    [root@redis ~]# systemctl start redis
    [root@redis ~]# systemctl enable redis
    
    

    7.重启多台机器的Tomcat
    8.接入负载均衡,通过负载均衡轮询调度检查是否正常
    9.如果session会话不正常: 将域名解析到指定的服务器,通过8080的方式去访问,测试,检查日志.

    5.Nginx+Tomcat集群全站Https

    • 单台:
      1.http接收器修改为 80端口 ---> 443
      2.配置443的证书
    • 集群:负载均衡部署ssl
    [root@lb01 conf.d]# cat proxy_zrlog.oldxu.com.conf 
    upstream  zrlog {
        server 172.16.1.7:8080;
        server 172.16.1.8:8080;
    }
    server {
        listen 443 ssl;
        ssl_certificate ssl_key/server.crt;
        ssl_certificate_key ssl_key/server.key;
        server_name zrlog.oldxu.com;
    location / {
        proxy_pass http://zrlog;
        include proxy_params;
    }
    }
    server {
        listen 80;
        server_name zrlog.oldxu.com;
        return 302 https://$http_host$request_uri;
     }
    
    

    5.Tomcat集群架构部署:Https+负载均衡+多台Tomcat+NFS+MySQL+Redis

    image

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