Apache2(http.2.4.6) + Tomcat 7.0 集群安装与配置

最近由于工作需要,公司需要部署 tomcat 集群,忙活了几天,终于配置了好了,做个笔记以后备用。

1. 下载 apache2 源码 http2.4.6

2. 配置 apache2
./configure --prefix=/usr/local/apache2 --enable-modules=shared --enable-mods-shared=all \
--enable-proxy --enable-proxy-connect --enable-proxy-ftp --enable-proxy-http \
--enable-proxy-ajp --enable-proxy-balancer --enable-rewrite \
--with-apr=/usr/local/apr \
--with-apr-util=/usr/local/apr-util/ \
--with-pcre=/usr/local/pcre

其中 apr ,apr-util, pcre 是安装依赖包,需要提前安装


3. 安装 apache2
root@qlserver03:/home/ryanwang/http2.4.6# make && make install

4 配置 load balance
修改 httpd.conf,文件末尾插入如下内容
 ProxyRequests Off
<Proxy balancer://mycluster>
    BalancerMember :8080  loadfactor=1 route=jvm1
    BalancerMember :8080  loadfactor=1 route=jvm2
</Proxy>
ProxyPass / balancer://mycluster/

正向代理需要关闭,主要是为了安全,“ProxyPass / balancer://mycluster/”

表示所有请求都交给 mycluster 来处理。


5 配置 tomcat7
修改 tomcat/conf/server.xml

<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine defaultHost="localhost" jvmRoute="jvm1">
<Engine defaultHost="localhost">-->
<Engine defaultHost="localhost" jvmRoute="jvm1">

另外一台服务器配置成 jvmRoute="jvm2"

6 应用的web.xml 文件需要增加一个元素 <distributable/>


到此 tomcat集群load balance 已经配置完成。下面配置 session 复制

<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
        channelSendOptions="8">
        <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="228.0.0.4"
                port="45564"
                frequency="500"
                dropTime="3000"/>
    <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
              address="192.168.1.202"
              port="4000"
              autoBind="100"
              selectorTimeout="5000"
              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=""/>
  <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
  <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
            tempDir="/tmp/war-temp/"
            deployDir="/tmp/war-deploy/"
            watchDir="/tmp/war-listen/"
            watchEnabled="false"/>
  <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
  <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>

其中修改把 manager元素的
<Manager className="org.apache.catalina.ha.session.DeltaManager"
修改为
<Manager className="org.apache.catalina.ha.session.BackupManager"
表示只有相同应用的tomcat之间才复制session。
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
          address="192.168.1.202"
          port="4000"
          autoBind="100"
          selectorTimeout="5000"
          maxThreads="6"/>

修改 receiver IP 地址和端口。

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