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nginx+tomcat怎麼使用redis session共享

PHPz

May 30, 2023 pm 06:40 PM

redis nginx tomcat

環境準備

1、準備一台nginx伺服器ip192.168.1.133 連接埠81

安裝過程：

＃首先安装依赖：
yum -y install gcc-c++ 
yum -y install pcre pcre-devel 
yum -y install zlib zlib-devel 
yum -y install openssl openssl—devel
#注意 ： 安装nginx必须使用 root 用户安装
#创建一个nginx目录
mkdir /usr/local/src/nginx
#进入到nginx目录
cd /usr/local/src/nginx
#下载或上传安装包
wget http://nginx.org/download/nginx.tar.gz 或 rz上传
#解压安装包
tar -xvf nginx.tar.gz
#进入到解压后的目录
cd nginx
# 下面 才开始正式安装
#把nginx安装到指定用户的目录
mkdir -p /ucenter/soft/nginx
#安装配置 prefix为安装目录 user为用户 group为 组
./configure --prefix=/ucenter/soft/nginx --user=ucenter --group=ucenter
#编译
make 
#安装
make install
#在linux系统中由于非root用户不能占用80端口，所以需要使普通用户以root身份启动nginx。 
cd /ucenter/soft/nginx/sbin
#把soft文件下所有的文件所属者修改为ucener -r 表示递归
chown ucenter:ucenter ./soft/ -r
#修改 ./nginx 的所属为root
chown root nginx
#让普通用户可以使用80端口，可以使用root权限启用nginx
chmod u+s nginx
#修改配置文件 在修改配置文件之前 ，要备份该文件
cd conf/
# 要注意nginx 的工作进程，一般根据cpu的核数去修改
vim nginx.conf
#关闭防火墙，打开80端口
service iptables stop
#启动nginx
./nginx
#重启nginx
./nginx -s reload
#关闭nginx
./nginx -s stop

登入後複製

準備一台tomcat伺服器，先準備java環境，安裝jdk步驟省略

然後分別安裝3個tomcat 伺服器ip位址：192.168.1.143，tomcat1 8080端口，tomcat2 8081端口，tomcat3 8082端口。

nginx+tomcat怎么使用redis session共享

apache-tomcat-7.0.64/conf/server.xml設定檔修改這三個地方，這樣連接埠就不會衝突

<server port="8005" shutdown="shutdown">
<connector port="8080" protocol="http/1.1"
connectiontimeout="20000"
redirectport="8443" />
<connector port="8009" protocol="ajp/1.3" redirectport="8443" />

登入後複製

修改tomcat root目錄下index.jsp，分別增加每個tomcat的標識，以及在頁面上顯示session id

<%--
licensed to the apache software foundation (asf) under one or more
contributor license agreements. see the notice file distributed with
this work for additional information regarding copyright ownership.
the asf licenses this file to you under the apache license, version 2.0
(the "license"); you may not use this file except in compliance with
the license. you may obtain a copy of the license at

 http://www.apache.org/licenses/license-2.0

unless required by applicable law or agreed to in writing, software
distributed under the license is distributed on an "as is" basis,
without warranties or conditions of any kind, either express or implied.
see the license for the specific language governing permissions and
limitations under the license.
--%>
<!doctype html>
<%@ page session="true" %>
<%
java.text.simpledateformat sdf = new java.text.simpledateformat("yyyy");
request.setattribute("year", sdf.format(new java.util.date()));
request.setattribute("tomcaturl", "http://tomcat.apache.org/");
request.setattribute("tomcatdocurl", "/docs/");
request.setattribute("tomcatexamplesurl", "/examples/");
%>
<html>
 <head>
  <title><%=request.getservletcontext().getserverinfo() %></title>
  <link href="favicon.ico" rel="icon" type="image/x-icon" />
  <link href="favicon.ico" rel="shortcut icon" type="image/x-icon" />
  <link href="tomcat.css" rel="stylesheet" type="text/css" />
 </head>

 <body>
  <div id="wrapper">
   <div id="navigation" class="curved container">
    <span id="nav-home"><a href="${tomcaturl}">home--<%=request.getsession().getid() %></a></span>
    <span id="nav-hosts"><a href="${tomcatdocurl}">documentation</a></span>
    <span id="nav-config"><a href="${tomcatdocurl}config/">configuration</a></span>
    <span id="nav-examples"><a href="${tomcatexamplesurl}">examples</a></span>
    <span id="nav-wiki"><a href="http://wiki.apache.org/tomcat/frontpage">wiki</a></span>
    <span id="nav-lists"><a href="${tomcaturl}lists.html">mailing lists</a></span>
    <span id="nav-help"><a href="${tomcaturl}findhelp.html">find help</a></span>
    <br />
   </div>
   <div id="asf-box">
    <h1>${pagecontext.servletcontext.serverinfo}--8080</h1>
   </div>
   <div id="upper" class="curved container">
    <div id="congrats" class="curved container">
     <h2>if you&#39;re seeing this, you&#39;ve successfully installed tomcat. congratulations!</h2>
    </div>
    <div id="notice">
     <img src="tomcat.png" alt="[tomcat logo]" />
     <div id="tasks">
      <h3>recommended reading:</h3>
      <h4><a href="${tomcatdocurl}security-howto.html">security considerations how-to</a></h4>
      <h4><a href="${tomcatdocurl}manager-howto.html">manager application how-to</a></h4>
      <h4><a href="${tomcatdocurl}cluster-howto.html">clustering/session replication how-to</a></h4>
     </div>
    </div>
    <div id="actions">
     <div>
      <a class="container shadow" href="/manager/status"><span>server status</span></a>
     </div>
     <div>
      <a class="container shadow" href="/manager/html"><span>manager app</span></a>
     </div>
     <div>
      <a class="container shadow" href="/host-manager/html"><span>host manager</span></a>
     </div>
    </div>
    <!--
    <br />
    -->
    <br />
   </div>
   <div id="middle" class="curved container">
    <h3>developer quick start</h3>
    <div>
     <div>
      <p><a href="${tomcatdocurl}setup.html">tomcat setup</a></p>
      <p><a href="${tomcatdocurl}appdev/">first web application</a></p>
     </div>
    </div>
    <div>
     <div>
      <p><a href="${tomcatdocurl}realm-howto.html">realms & aaa</a></p>
      <p><a href="${tomcatdocurl}jndi-datasource-examples-howto.html">jdbc datasources</a></p>
     </div>
    </div>
    <div>
     <div>
      <p><a href="${tomcatexamplesurl}">examples</a></p>
     </div>
    </div>
    <div>
     <div>
      <p><a href="http://wiki.apache.org/tomcat/specifications">servlet specifications</a></p>
      <p><a href="http://wiki.apache.org/tomcat/tomcatversions">tomcat versions</a></p>
     </div>
    </div>
    <br />
   </div>
   <div id="lower">
    <div id="low-manage" class="">
     <div class="curved container">
      <h3>managing tomcat</h3>
      <p>for security, access to the <a href="/manager/html">manager webapp</a> is restricted.
      users are defined in:</p>
      <pre class="brush:php;toolbar:false">$catalina_home/conf/tomcat-users.xml

in tomcat 7.0 access to the manager application is split between different users. read more...

release notes

changelog

migration guide

security notices

documentation

tomcat 7.0 documentation

tomcat 7.0 configuration

tomcat wiki

find additional important configuration information in:

$catalina_home/running.txt

developers may be interested in:

getting help

faq and mailing lists

the following mailing lists are available:

tomcat-announce
important announcements, releases, security vulnerability notifications. (low volume).
tomcat-users
user support and discussion
taglibs-user
user support and discussion for apache taglibs
tomcat-dev
development mailing list, including commit messages

登入後複製

nginx+tomcat怎么使用redis session共享

這時候修改nginx配置檔案nginx.conf，把三台tomcat的ip位址以及連接埠號碼加入進去，使用nginx做代理

#user nobody;
worker_processes 1;

#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;

#pid  logs/nginx.pid;


events {
 worker_connections 1024;
}


http {
 include  mime.types;
 default_type application/octet-stream;

 #log_format main &#39;$remote_addr - $remote_user [$time_local] "$request" &#39;
 #     &#39;$status $body_bytes_sent "$http_referer" &#39;
 #     &#39;"$http_user_agent" "$http_x_forwarded_for"&#39;;

 #access_log logs/access.log main;

 sendfile  on;
 #tcp_nopush  on;

 #keepalive_timeout 0;
 keepalive_timeout 65;

 #gzip on;

 upstream localhost1 { 
  
   #ip_hash; 
   server 192.168.1.143:8080; 
   server 192.168.1.143:8081; 
   server 192.168.1.143:8082; 
 } 

 server {
  listen  81;
  server_name localhost;

  #charset koi8-r;

  #access_log logs/host.access.log main;

  location / {
    proxy_connect_timeout 3; 
    proxy_send_timeout  30; 
    proxy_read_timeout  30; 
    proxy_pass http://localhost1; 
  }

  #error_page 404    /404.html;

  # redirect server error pages to the static page /50x.html
  #
  error_page 500 502 503 504 /50x.html;
  location = /50x.html {
   root html;
  }

  # proxy the php scripts to apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  # proxy_pass http://127.0.0.1;
  #}

  # pass the php scripts to fastcgi server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  # root   html;
  # fastcgi_pass 127.0.0.1:9000;
  # fastcgi_index index.php;
  # fastcgi_param script_filename /scripts$fastcgi_script_name;
  # include  fastcgi_params;
  #}

  # deny access to .htaccess files, if apache&#39;s document root
  # concurs with nginx&#39;s one
  #
  #location ~ /\.ht {
  # deny all;
  #}
 }


 # another virtual host using mix of ip-, name-, and port-based configuration
 #
 #server {
 # listen  8000;
 # listen  somename:8080;
 # server_name somename alias another.alias;

 # location / {
 #  root html;
 #  index index.html index.htm;
 # }
 #}


 # https server
 #
 #server {
 # listen  443;
 # server_name localhost;

 # ssl     on;
 # ssl_certificate  cert.pem;
 # ssl_certificate_key cert.key;

 # ssl_session_timeout 5m;

 # ssl_protocols sslv2 sslv3 tlsv1;
 # ssl_ciphers high:!anull:!md5;
 # ssl_prefer_server_ciphers on;

 # location / {
 #  root html;
 #  index index.html index.htm;
 # }
 #}

}

登入後複製

這時候，分別啟動三台tomcat以及nginx，訪問，這時候每次刷新頁面，都會隨機存取8080或8081或8082，而且頁面上出現的session id也都是不一樣的，我們該如何讓這三台tomcat共享session呢，我們使用redis來做。

這時候，在已經依照三台tomcat的伺服器192.168.1.143上，安裝redis，安裝步驟如下：

$ wget http://download.redis.io/releases/redis-3.2.3.tar.gz
$ tar xzf redis-3.2.3.tar.gz
$ cd redis-3.2.3
$ make malloc=libc
#启动redis src前面是安装的路径
$ src/redis-server &

#关闭redis
src/redis-cli shutdown
#使用redis 放入键值对 key value
$ src/redis-cli
127.0.0.1:6379> set foo bar
ok
127.0.0.1:6379> get foo
"bar"
$

登入後複製

安裝完redis之後，在三個tomcat的lib資料夾內分別上傳這五個所依賴的jar，分別是

commons-pool2-2.0.jar

jedis-2.5.2.jar

tomcat-redis -session-manager1.2.jar

tomcat-juli.jar

tomcat-juli-adapters.jar

所有jar在這裡了，

#然後分別修個三個tomcat的context.xml文件，增加如下的配置

<?xml version=&#39;1.0&#39; encoding=&#39;utf-8&#39;?>

<context>

 <!-- default set of monitored resources -->
 <watchedresource>web-inf/web.xml</watchedresource>

 
 <!-- 这里增加redis session共享的配置 6379是redis的端口-->
 <valve classname="com.orangefunction.tomcat.redissessions.redissessionhandlervalve" /> 
 <manager classname="com.orangefunction.tomcat.redissessions.redissessionmanager" 
 host="127.0.0.1" 
 port="6379" 
 database="0" 
 maxinactiveinterval="60" /> 
</context>

登入後複製

這時候，分別重啟三個tomcat以及nginx，查看tomcat日誌之後，發現沒有任何異常報錯，說明我們成功了，接下來開始測試。

我們訪問nginx服務器地址：

得到的是8080端口的tomcat1 ，session id為1a0625767f27ba95ef4d5f061fe0568d

nginx+tomcat怎么使用redis session共享