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				軟件及環境是：
    虛擬機上裝centos 5.5
    IP為：192.168.0.51 裝上nginx和tomcat ?6.0.32 命名為 Tomcat1
    一臺win7上裝tomcat ?6.0.32? IP為：192.168.0.50 ?命名為 Tomcat2

    首先裝nginx，我是參照http://blog.s135.com/nginx_php_v6/?配了一個Nginx + PHP（FastCGI）環境，然后再加上Tomcat的轉發。
    我的nginx.conf 修改如下
    #######################################################################
    #
    #?This?is?the?main?Nginx?configuration?file.??
    #
    #?More?information?about?the?configuration?options?is?available?on?
    #???    *?the?English?wiki?-?http://wiki.nginx.org/Main
    #???*?the?Russian?documentation?-?http://sysoev.ru/nginx/
    #
    #######################################################################

    #    ----------------------------------------------------------------------
    #?Main?Module?    -?directives?that?cover?basic?functionality
    #
    #???http:    //wiki.nginx.org/NginxHttpMainModule
    #
    #    ----------------------------------------------------------------------

    user??????????????nginx;
    worker_processes??    8;

    error_log??    /var/log/nginx/error.log;
    #error_log??    /var/log/nginx/error.log??notice;
    #error_log??    /var/log/nginx/error.log??info;

    pid????????    /var/run/nginx.pid;


    #    ----------------------------------------------------------------------
    #?Events?Module?
    #
    #???http:    //wiki.nginx.org/NginxHttpEventsModule
    #
    #    ----------------------------------------------------------------------

    events?    {
    ????worker_connections??    10240;
    }


    #    ----------------------------------------------------------------------
    #?HTTP?Core?Module
    #
    #???http:    //wiki.nginx.org/NginxHttpCoreModule?
    #
    #    ----------------------------------------------------------------------

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

    ????log_format??main??    '$remote_addr?-?$remote_user?[$time_local]?"$request"?'
    ??????????????????????    '$status?$body_bytes_sent?"$http_referer"?'
    ??????????????????????    '"$http_user_agent"?"$http_x_forwarded_for"';

    ????access_log??    /var/log/nginx/access.log??main;

    server_names_hash_bucket_size??    128;
    client_header_buffer_size??32k;
    large_client_header_buffers??    4??32K;
    client_max_body_size?8m;


    ????sendfile????????on;
    ????tcp_nopush?????on;

    ????#keepalive_timeout??    0;
    ????keepalive_timeout??    65;

    ????#gzip??on;

    gzip_min_length?1k;
    gzip_buffers?    4??16k;
    gzip_http_version?    1.1;
    gzip_comp_level?    2;
    gzip_types?text    /plain?application/x-javascript?text/css?application/xml;
    gzip_vary??on;

    upstream??tserver??    {
    ????????server???    192.168.0.51:8080?weight=1;
    ????????server???    192.168.0.50:8080?weight=1;
    ?}
    ????
    ????#
    ????#?The?    default?server
    ????#
    ????server?    {
    ????????listen???????    80;
    ????????server_name??_;

    ????????#charset?koi8    -r;

    ????????#access_log??logs    /host.access.log??main;

    ?????????location?    ~?.*\.(php|php5)?$
    ????????    {
    ??????????root??    /www/ROOT;??????
    ??????????#fastcgi_pass??unix:    /tmp/php-cgi.sock;
    ?????????fastcgi_pass??    127.0.0.1:9000;
    ?????????fastcgi_index?index.php;
    ?????????include?fcgi.conf;
    ????????}

    ????????location?    ~?\.(jsp|jspx|do|htm)?$?{
    ?????????proxy_set_header??Host?$host;??
    ?????????proxy_set_header??X    -Real-IP??$remote_addr;
    ?????????proxy_pass?http:    //tserver;#轉向tomcat處理???????
    ????????}

    ????????location?    ~?(/dwr/)??{
    ?????????proxy_set_header??Host?$host;
    ?????????proxy_set_header??X    -Real-IP??$remote_addr;
    ?????????proxy_pass?http:    //tserver;#轉向tomcat處理
    ????????}


    ????????location?    /?{
    ????????????root???    /www/ROOT;
    ????????????index??index.html?index.jsp?    default.jsp?index.do?default.do;
    ????????}

    ????????error_page??    404??????????????/404.html;
    ????????location?    =?/404.html?{
    ????????????root???    /www/ROOT;
    ????????}

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

    ????????#?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's?document?root
    ????????#?concurs?with?nginx's?one
    ????????#
    ????????#location?    ~?/\.ht?{
    ????????#????deny??all;
    ????????#}
    ????}

    ????#?Load?config?files?from?the?    /etc/nginx/conf.d?directory
    ????include?    /etc/nginx/conf.d/*.conf;

    }


    下一步是配置Tomcat集群。分別打開tomcat1和tomcat2下conf中server.xml
    <Server port="8005" shutdown="SHUTDOWN">
    <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
    <Connector port="8080" maxHttpHeaderSize="8192"
    ? ?maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
    ? ?enableLookups="false" redirectPort="8443" acceptCount="100"
    ? ?connectionTimeout="20000" disableUploadTimeout="true" />
    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector port="8009" enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />

    找到<Engine name="Catalina" defaultHost="localhost">
    Tomcat1下的修改為<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">
    Tomcat2下的修改為<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat2">

    tomcat1找到
    <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
    修改為?
    <Cluster?className="org.apache.catalina.ha.tcp.SimpleTcpCluster"?
    ????????????channelSendOptions    ="6">

    ????????????    <Manager?className="org.apache.catalina.ha.session.DeltaManager"
    ????????????????expireSessionsOnShutdown    ="false"
    ????????????????notifyListenersOnReplication    ="true"/>
    ????????????    <!--
    ????????????    <Manager?className="org.apache.catalina.ha.session.BackupManager"
    ????????????????expireSessionsOnShutdown    ="false"
    ????????????????notifyListenersOnReplication    ="true"
    ????????????????mapSendOptions    ="6"/>
    ????????????    -->
    ????????????    <Channel?className="org.apache.catalina.tribes.group.GroupChannel">
    ????????????????    <Membership?className="org.apache.catalina.tribes.membership.McastService"?
    ????????????????????address    ="228.0.0.5"?
    ????????????????????bind    ="192.168.0.51"?
    ????????????????????port    ="45564"?
    ????????????????????frequency    ="500"?
    ????????????????????dropTime    ="3000"/>
    ????????????????    <Receiver?className="org.apache.catalina.tribes.transport.nio.NioReceiver"?
    ????????????????????address    ="192.168.0.51"?
    ????????????????????autoBind    ="100"?
    ????????????????????port    ="4001"?
    ????????????????????selectorTimeout    ="100"?
    ????????????????????maxThreads    ="6"/>
    ????????????????    <Sender?className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
    ????????????????????    <Transport?className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
    ????????????????    </Sender>
    ????????????????    <Interceptor?className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
    ????????????????    <Interceptor?className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
    ????????????    </Channel>
    ????????????    <Valve?className="org.apache.catalina.ha.tcp.ReplicationValve"?filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
    ????????????
    ????????????    <ClusterListener?className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
    ????????????    <ClusterListener?className="org.apache.catalina.ha.session.ClusterSessionListener"/>
    ????????    </Cluster>


    tomcat2找到
    <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
    修改為?
    <Cluster?className="org.apache.catalina.ha.tcp.SimpleTcpCluster"?
    ????????????channelSendOptions    ="6">

    ????????????    <Manager?className="org.apache.catalina.ha.session.DeltaManager"
    ????????????????expireSessionsOnShutdown    ="false"
    ????????????????notifyListenersOnReplication    ="true"/>
    ????????????    <!--
    ????????????    <Manager?className="org.apache.catalina.ha.session.BackupManager"
    ????????????????expireSessionsOnShutdown    ="false"
    ????????????????notifyListenersOnReplication    ="true"
    ????????????????mapSendOptions    ="6"/>
    ????????????    -->
    ????????????    <Channel?className="org.apache.catalina.tribes.group.GroupChannel">
    ????????????????    <Membership?className="org.apache.catalina.tribes.membership.McastService"?
    ????????????????????address    ="228.0.0.5"?
    ????????????????????bind    ="192.168.0.50"?
    ????????????????????port    ="45564"?
    ????????????????????frequency    ="500"?
    ????????????????????dropTime    ="3000"/>
    ????????????????    <Receiver?className="org.apache.catalina.tribes.transport.nio.NioReceiver"?
    ????????????????????address    ="192.168.0.50"?
    ????????????????????autoBind    ="100"?
    ????????????????????port    ="4000"?
    ????????????????????selectorTimeout    ="100"?
    ????????????????????maxThreads    ="6"/>
    ????????????????    <Sender?className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
    ????????????????????    <Transport?className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
    ????????????????    </Sender>
    ????????????????    <Interceptor?className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
    ????????????????    <Interceptor?className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
    ????????????    </Channel>
    ????????????    <Valve?className="org.apache.catalina.ha.tcp.ReplicationValve"?filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/>
    ????????????
    ????????????    <ClusterListener?className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
    ????????????    <ClusterListener?className="org.apache.catalina.ha.session.ClusterSessionListener"/>
    ????????    </Cluster>



    還需要在程序的web.xml里面</web-app>前面加入以下這句話
    <distributable/>?
    session同步到這里設置完畢

    服務器的啟動順序如下:?
    tomcat1 --> |tomcat2 --> |nginx?
    先啟動tocmat1,等tomcat1啟動完全的時候再啟動tomcat2，等兩個tocmat全啟動之后，再啟動nginx

    負載的時候可以用APACHE或NGINX，如果什么都不用，兩臺一接防問了話，可能會出錯極session不同步的問題，網上也很多人介意不要做seeeion同步，這樣會降低機器的性能，有一個方法可以，就是NGINX的ip_hash,這樣至少可以保證客戶端去防問同一臺TOCMAT，除非那臺TOCMAT掛了




    一、下載下列幾個 Jar包?
    http://memcached-session-manager.googlecode.com/files/memcached-session-manager-1.3.0.jar?
    http://memcached-session-manager.googlecode.com/files/msm-javolution-serializer-jodatime-1.3.0.jar?
    http://memcached-session-manager.googlecode.com/files/msm-javolution-serializer-cglib-1.3.0.jar?
    http://spymemcached.googlecode.com/files/memcached-2.4.2.jar?
    http://memcached-session-manager.googlecode.com/files/javolution-5.4.3.1.jar?

    將以下幾個Jar包Copy到 $TOMCAT_HOME/lib目下，每個Tomcat節點都需要有。?

    二、配置Tomcat的Server.xml配置文件，樣本可以點擊這里下載，主要內容如下：?
    http://www.javabloger.com/images/2010-05/webcluster/server.xml.txt?

    <Context docBase="D:\webapp" path="" reloadable="true" >?
    <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"?
    memcachedNodes="n1:localhost:11211"?
    requestUriIgnorePattern=".*\.(png|gif|jpg|css|js)$"?
    sessionBackupAsync="false"?
    sessionBackupTimeout="100"?
    transcoderFactoryClass="de.javakaffee.web.msm.serializer.javolution.JavolutionTranscoderFactory"?
    copyCollectionsForSerialization="false"?
    />?
    </Context>?

    每個Tomcat的節點都需要修改。
    
		    

	
    
	
	
    
		posted on 2011-06-22 22:15 禮物 閱讀(3219) 評論(0)  編輯  收藏  
	
    

    







    
	    
    




    





    


    

	
    
		
    
				
		
	
		
    
		
		
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