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Tomcat+Memcached+Nginx实现session会话共享

时间：2020-04-05 20:06:43      阅读：90      评论：0      收藏：0      [点我收藏+]

标签：index   防火   selinux   rtu   hotspot   default   imp   操作   and   

环境：

ip hostname software version OS port
192.168.1.120 nginx-proxy-master.gz01 nginx-1.8.1 CentOS Linux release 7.4.1708 (Core)  80
192.168.1.136 tomcat-node01.gz01 apache-tomcat-8.5.53 CentOS Linux release 7.4.1708 (Core)  8080
192.168.1.137 tomcat-node02.gz01 apache-tomcat-8.5.53 CentOS Linux release 7.4.1708 (Core)  8080
192.168.1.124 mem-node01.gz01 memcached-1.4.34    CentOS Linux release 7.4.1708 (Core)  11211
192.168.1.135 mem-node02.gz01 memcached-1.4.34    CentOS Linux release 7.4.1708 (Core)  11211

技术图片

关闭防火墙和selinux，便于后面测试：

1 [root@mem-node01 ~]#  systemctl stop firewalld
2 [root@mem-node02 ~]#  systemctl stop firewalld
3 [root@tomcat-node01 ~]#  systemctl stop firewalld
4 [root@tomcat-node02 ~]#  systemctl stop firewalld
5 [root@nginx-proxy-master ~]# systemctl stop firewalld
1 [root@mem-node01 ~]# setenforce 0
2 [root@mem-node02 ~]# setenforce 0
3 [root@tomcat-node01 ~]# setenforce 0
4 [root@tomcat-node02 ~]# setenforce 0
5 [root@nginx-proxy-master ~]# setenforce 0

主机192.168.1.136 和192.168.1.137安装jdk和tomcat：

 1 [root@tomcat-node01 tools]# ll
 2 总用量 195372
 3 -rw-r--r--. 1 root root  10300600 3月  25 21:42 apache-tomcat-8.5.53.tar.gz
 4 -rw-r--r--. 1 root root 189756259 3月  25 22:08 jdk-8u161-linux-x64.tar.gz
 5 [root@tomcat-node01 tools]# tar -zxvf jdk-8u161-linux-x64.tar.gz 
 6 [root@tomcat-node01 tools]# cp -r jdk1.8.0_161 /usr/local/jdk1.8.0_161
 7 [root@tomcat-node01 tools]# ln -s /usr/local/jdk1.8.0_161/ /usr/local/jdk
 8 [root@tomcat-node01 tools]# vim /etc/profile
 9 JAVA_HOME=/usr/local/jdk/
10 CLASSPATH=$CLASSPATH:$JAVA_HOME/lib
11 PATH=$JAVA_HOME/bin:$PATH                            
12 [root@tomcat-node01 tools]# source /etc/profile
13 [root@tomcat-node01 tools]# java -version
14 java version "1.8.0_161"
15 Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
16 Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)
17 
18 [root@tomcat-node01 tools]# tar -zxvf apache-tomcat-8.5.53.tar.gz 
19 [root@tomcat-node01 tools]# mv apache-tomcat-8.5.53 /usr/local/
20 [root@tomcat-node01 tools]# ln -s /usr/local/apache-tomcat-8.5.53/ /usr/local/tomcat
21 [root@tomcat-node01 tools]# vim /etc/profile
22 CATALINA_HOME=/usr/local/tomcat/
23 PATH=$JAVA_HOME/bin:/usr/local/tomcat/bin/:$PATH            
24 [root@tomcat-node01 tools]# source /etc/profile
25 [root@tomcat-node01 tools]# /usr/local/tomcat/bin/startup.sh 
26 Using CATALINA_BASE:   /usr/local/tomcat
27 Using CATALINA_HOME:   /usr/local/tomcat
28 Using CATALINA_TMPDIR: /usr/local/tomcat/temp
29 Using JRE_HOME:        /usr/local/jdk
30 Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
31 Tomcat started.
32 [root@tomcat-node01 tools]# netstat -lnt
33 Active Internet connections (only servers)
34 Proto Recv-Q Send-Q Local Address           Foreign Address         State      
35 tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN     
36 tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN     
37 tcp6       0      0 :::8080                 :::*                    LISTEN     
38 tcp6       0      0 :::22                   :::*                    LISTEN     
39 tcp6       0      0 ::1:25                  :::*                    LISTEN     
40 tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN     
41 [root@tomcat-node01 tools]# 
42 
43 tomcat-node02 也是一样操作

设置一下tomcat测试主页

 1 [root@tomcat-node01 ROOT]# pwd
 2 /usr/local/tomcat/webapps/ROOT
 3 [root@tomcat-node01 ROOT]# cat index.jsp 
 4 <%@ page language="java" %>
 5   <%@ page import="java.util.*" %>
 6   <html>
 7   <head>
 8   <title>>Tomcat 192.168.1.136:8080 </title>
 9           </head>
10          <body>
11   
12  <h1><font color="blue">Tomcat 192.168.1.136:8080 </h1>
13  <table align="centre" border="1">
14  <tr>
15  <td>Session ID</td>
16  <% session.setAttribute("abc","abc"); %>
17  <td><%= session.getId() %></td>
18  </tr>
19  <tr>
20  <td>Created on</td>
21  <td><%= session.getCreationTime() %></td>
22  </tr>
23  </table>
24          </body>
25  </html>
26 
27 
28 [root@tomcat-node02 ROOT]# pwd
29 /usr/local/tomcat/webapps/ROOT
30 [root@tomcat-node02 ROOT]# cat index.jsp 
31 <%@ page language="java" %>
32   <%@ page import="java.util.*" %>
33   <html>
34   <head>
35   <title>>Tomcat 192.168.1.137:8080 </title>
36           </head>
37          <body>
38   
39  <h1><font color="blue">Tomcat 192.168.1.137:8080 </h1>
40  <table align="centre" border="1">
41  <tr>
42  <td>Session ID</td>
43  <% session.setAttribute("abc","abc"); %>
44  <td><%= session.getId() %></td>
45  </tr>
46  <tr>
47  <td>Created on</td>
48  <td><%= session.getCreationTime() %></td>
49  </tr>
50  </table>
51          </body>
52  </html>

nginx-proxy-master.gz01 192.168.1.120 安装nginx

1 安装依赖
2 [root@nginx-proxy-master ~]# rpm -ivh http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm
3 Retrieving http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm
4 warning: /var/tmp/rpm-tmp.K0JmFW: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY
5 Preparing...                          ################################# [100%]
6 Updating / installing...
7    1:epel-release-7-12                ################################# [100%]
8 [root@nginx-proxy-master ~]# yum install -y gcc glibc gcc-c++ pcre-devel openssl-devel

 

 1 [root@nginx-proxy-master tools]# pwd
 2 /usr/local/tools
 3 [root@nginx-proxy-master tools]# tar -zxvf nginx-1.8.1.tar.gz 
 4 [root@nginx-proxy-master tools]# cd nginx-1.8.1
 5 [root@nginx-proxy-master nginx-1.8.1]# ./configure --prefix=/usr/local/nginx-1.8.1  6  --with-http_ssl_module  7  --with-http_stub_status_module --with-file-aio
 8 [root@nginx-proxy-master nginx-1.8.1]# make
 9 [root@nginx-proxy-master nginx-1.8.1]# make install
10 [root@nginx-proxy-master nginx-1.8.1]#   ln -s /usr/local/nginx-1.8.1/ /usr/local/nginx
11 [root@nginx-proxy-master nginx-1.8.1]# /usr/local/nginx/sbin/nginx
12 [root@nginx-proxy-master nginx-1.8.1]# netstat -nltp|grep 80
13 tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      12495/nginx: master

配置nginx

 1 http {
 2     include       mime.types;
 3     default_type  application/octet-stream;
 4     sendfile        on;
 5     upstream tomcat{
 6         server 192.168.1.137:8080 weight=1;
 7         server 192.168.1.136:8080 weight=2;
 8         }
 9 
10     server {
11         listen       80;
12         server_name  localhost;
13 
14         location / {
15             proxy_pass http://tomcat;
16         }
17 
18         location ~* \.(jsp|do)$ {
19               proxy_pass http://tomcat;
20             proxy_set_header Host $host;
21        }
1 [root@nginx-proxy-master conf]# /usr/local/nginx/sbin/nginx -t
2 nginx: the configuration file /usr/local/nginx-1.8.1/conf/nginx.conf syntax is ok
3 nginx: configuration file /usr/local/nginx-1.8.1/conf/nginx.conf test is successful
4 [root@nginx-proxy-master conf]# /usr/local/nginx/sbin/nginx -s reload

技术图片

 

 

 

技术图片

 

 

 访问192.168.1.120，发现访问请求结果会负载到192.168.1.136和192.168.1.137的tomcat上了。

在配置memcached-session-manager会话共享之前,访问nginx主机的请求会轮询负载到tomcat-node1和tomcat-node2两个节点上,并且session id会随着页面的刷新而改变,即此时还没有实现session会话共享

 

安装Memcached：(两个节点部署一样)

 1 [root@mem-node02 tools]# yum -y install libevent libevent-devel
 2 [root@mem-node02 tools]# tar -zxvf memcached-1.4.34.tar.gz 
 3 [root@mem-node02 tools]#  cd memcached-1.4.34
 4 [root@mem-node02 memcached-1.4.34]#  ./configure --prefix=/usr/local/memcached
 5 [root@mem-node02 memcached-1.4.34]# make
 6 [root@mem-node02 memcached-1.4.34]#  make install
 7 [root@mem-node02 memcached-1.4.34]# /usr/local/memcached/bin/memcached -d -m 512 -u root -p 11211 -c 1024 -P /var/lib/memcached.11211pid
 8 [root@mem-node02 memcached-1.4.34]# 
 9 [root@mem-node02 memcached-1.4.34]#  ps -ef|grep memcached
10 root       3105      1  0 17:41 ?        00:00:00 /usr/local/memcached/bin/memcached -d -m 512 -u root -p 11211 -c 1024 -P /var/lib/memcached.11211pid
11 root       3138   1234  0 17:51 pts/0    00:00:00 grep --color=auto memcached
12 [root@mem-node02 memcached-1.4.34]# lsof -i:11211
13 COMMAND    PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
14 memcached 3105 root   26u  IPv4  34290      0t0  TCP *:memcache (LISTEN)
15 memcached 3105 root   27u  IPv6  34291      0t0  TCP *:memcache (LISTEN)
16 memcached 3105 root   28u  IPv4  34294      0t0  UDP *:memcache 
17 memcached 3105 root   29u  IPv4  34294      0t0  UDP *:memcache 
18 memcached 3105 root   30u  IPv4  34294      0t0  UDP *:memcache 
19 memcached 3105 root   31u  IPv4  34294      0t0  UDP *:memcache 
20 memcached 3105 root   32u  IPv6  34295      0t0  UDP *:memcache 
21 memcached 3105 root   33u  IPv6  34295      0t0  UDP *:memcache 
22 memcached 3105 root   34u  IPv6  34295      0t0  UDP *:memcache 
23 memcached 3105 root   35u  IPv6  34295      0t0  UDP *:memcache

配置Tomcat，通过MSM实现共享session（192.168.1.136和192.168.1.137机器上操作）

1、把memcached的jar包上传到/usr/local/tomcat/lib/目录



  [root@tomcat-node01 ROOT]# cd /usr/local/tomcat/lib/
  [root@tomcat-node01 lib]# ll


 4 -rw-rw-r-- 1 sys-noc sysnoc-work  53259 8月  27 2018 asm-5.2.jar
 5 -rw-rw-r-- 1 sys-noc sysnoc-work 323740 8月  27 2018 kryo-4.0.0.jar
 6 -rw-rw-r-- 1 sys-noc sysnoc-work  85217 8月  27 2018 kryo-serializers-0.38.jar
 7 -rw-rw-r-- 1 sys-noc sysnoc-work 152401 8月  27 2018 memcached-session-manager-1.9.7.jar
 8 -rw-rw-r-- 1 sys-noc sysnoc-work  10788 8月  27 2018 memcached-session-manager-tc8-1.9.7.jar
 9 -rw-rw-r-- 1 sys-noc sysnoc-work   5711 8月  27 2018 minlog-1.3.0.jar
10 -rw-rw-r-- 1 sys-noc sysnoc-work  37160 8月  27 2018 msm-kryo-serializer-1.9.7.jar
11 -rw-rw-r-- 1 sys-noc sysnoc-work  51287 8月  27 2018 objenesis-2.4.jar
12 -rw-rw-r-- 1 sys-noc sysnoc-work  20883 8月  27 2018 reflectasm-1.11.3.jar
13 -rw-rw-r-- 1 sys-noc sysnoc-work 472838 8月  27 2018 spymemcached-2.12.2.jar




2、修改conf/context.xml文件:(No-Stick模式)多个tomcat实例时 需要选择Non-Sticky模式，即sticky="false"




 1 [root@tomcat-node01 conf]# cp context.xml context.xml.bak
 2 [root@tomcat-node01 conf]# vim context.xml
 3 
 4  <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
 5          memcachedNodes="n1:192.168.1.124:11211,n2:192.168.1.135:11211"
 6          lockingMode="auto"
 7          sticky="false"
 8          sessionBackupAsync="false"
 9          sessionBackupTimeout= "1000"
10          copyCollectionsForSerialization="true"
11          requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$"
12          transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory"
13     />






 1 [root@tomcat-node01 conf]# /usr/local/tomcat/bin/shutdown.sh 
 2 Using CATALINA_BASE:   /usr/local/tomcat
 3 Using CATALINA_HOME:   /usr/local/tomcat
 4 Using CATALINA_TMPDIR: /usr/local/tomcat/temp
 5 Using JRE_HOME:        /usr/local/jdk
 6 Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
 7 [root@tomcat-node01 conf]# /usr/local/tomcat/bin/startup.sh 
 8 Using CATALINA_BASE:   /usr/local/tomcat
 9 Using CATALINA_HOME:   /usr/local/tomcat
10 Using CATALINA_TMPDIR: /usr/local/tomcat/temp
11 Using JRE_HOME:        /usr/local/jdk
12 Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
13 Tomcat started.
14 [root@tomcat-node01 conf]# 




 MSM会话共享测试


 


1、访问nginx主机,按ctrl+F5强刷页面,发现session信息会变,但是sessionid不会改变!说明session实现了共享! 如下,表示当前sessionid保存到了n2这个memcached节点上了.


技术图片


 


 技术图片


 


 


2、关闭tomcat-node1和tomcat-node2中的任意一个节点的tomcat服务,继续访问页面,发现前端从nginx负载过来的请求达到未关闭的tomcat节点上,sessionid都不会改变,任然在共享中!即可以实现tomcat故障转移


[root@tomcat-node01 conf]# /usr/local/tomcat/bin/shutdown.sh 


 


技术图片


 


 


[root@tomcat-node02 conf]# /usr/local/tomcat/bin/shutdown.sh 


技术图片


 


 3、关闭mem-node2节点的memcached服务,继续访问页面,发现sessionid保存到了n1这个memcached节点上了,但是sessionid任然没有改变,说明session已共享. 也就是说,关闭memcached集群中的任意一个节点.访问页面,sessionid都不会改变.即可以实现memcached故障转移!


 


 技术图片


 


 


技术图片


 


 
Tomcat+Memcached+Nginx实现session会话共享
标签：index   防火   selinux   rtu   hotspot   default   imp   操作   and   
原文地址：https://www.cnblogs.com/xiaozhebao/p/12638560.html

                

                

                    

                        

                            

                                

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