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
