haproxy简单负载均衡搭建

最近对负载均衡进行搭建具体方法如下：

• haproxy 修改部分(haproxy-cfg.cfg)

global     daemon     maxconn 4500 defaults        mode http        timeout connect 5000ms        timeout client 50000ms        timeout server 180000ms        stats enable        stats uri /stats        stats auth admin:age!^*frontend http-in        bind *:<span style="color: #ff0000;"><strong>9090</strong></span>        default_backend dynamic_serversbackend dynamic_servers        mode http        option httpclose        option forwardfor header X-Forwarded-For        appsession JSESSIONID len 52 timeout 30m        balance roundrobin        server server_9091 191.29.70.6:9091 maxconn 250        server server_9092 191.29.70.6:9092 maxconn 250        server server_9093 191.29.70.6:9093 maxconn 250        server server_9094 191.29.70.6:9094 maxconn 250        server server_9095 191.29.70.6:9095 maxconn 250

 使用haproxy做端口转发，只需要修改tomcat的 到不同的端口（保证端口不被占用）

在haproxy映射即可。

启动方法 ./haproxy -f haproxy-cfg.cfg

haproxy 有编译好的版本，也可以自行编译参考方法

http://wenku.baidu.com/view/0a7a28154431b90d6c85c760.html 

tomcat示例

<!-- Note:  A "Server" is not itself a "Container", so you may not     define subcomponents such as "Valves" at this level.     Documentation at /docs/config/server.html--><Server <strong><span style="color: #ff0000;">port="9005"</span></strong> shutdown="SHUTDOWN">   <!--APR library loader. Documentation at /docs/apr.html -->  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->  <Listener className="org.apache.catalina.core.JasperListener" />  <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />   <!-- Global JNDI resources       Documentation at /docs/jndi-resources-howto.html  -->  <GlobalNamingResources>    <!-- Editable user database that can also be used by         UserDatabaseRealm to authenticate users    -->    <Resource name="UserDatabase" auth="Container"              type="org.apache.catalina.UserDatabase"              description="User database that can be updated and saved"              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"              pathname="conf/tomcat-users.xml" />  </GlobalNamingResources>   <!-- A "Service" is a collection of one or more "Connectors" that share       a single "Container" Note:  A "Service" is not itself a "Container",        so you may not define subcomponents such as "Valves" at this level.       Documentation at /docs/config/service.html   -->  <Service name="Catalina">    <!--The connectors can use a shared executor, you can define one or more named thread pools-->    <!--    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-"         maxThreads="150" minSpareThreads="4"/>    -->            <!-- A "Connector" represents an endpoint by which requests are received         and responses are returned. Documentation at :         Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)         Java AJP  Connector: /docs/config/ajp.html         APR (HTTP/AJP) Connector: /docs/apr.html         Define a non-SSL HTTP/1.1 Connector on port 8080    -->    <Connector <span style="color: #ff0000;"><strong>port="9091"</strong></span> protocol="HTTP/1.1"                connectionTimeout="100000"                redirectPort="8443" URIEncoding="gbk"/><!-- A "Connector" using the shared thread pool-->    <!--    <Connector executor="tomcatThreadPool"               port="8081" protocol="HTTP/1.1"                connectionTimeout="20000"                redirectPort="8443" />    -->               <!-- Define a SSL HTTP/1.1 Connector on port 8443         This connector uses the JSSE configuration, when using APR, the          connector should be using the OpenSSL style configuration         described in the APR documentation -->    <!--    <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"               maxThreads="150" scheme="https" secure="true"               clientAuth="false" sslProtocol="TLS" />    -->.....