Tomcat集群架构介绍

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