第十周作业

vim /etc/haproxy/haproxy.cfg

listen web_port
    bind 192.168.50.100:80
    balance    roundrobin
    mode http
    log global
    cookie websrv insert nocache indirect
    server web1 192.168.50.1:80 check inter 3000 fall 2 rise 5 cookie web1
    server web1 192.168.50.2:80 check inter 3000 fall 2 rise 5 cookie web1

1#在proxy主机设置nginx实现后端tomcat主机轮询
vim /etc/nginx/conf.d/tomcat.conf

<proxy balancer://tomcat-server>
    BalancerMember http://t1:8080 loadfactor=1
    BalancerMember http://t2:8080 loadfactor=1
</proxy>


<virtualHost *:80>
        servername             proxy
        proxyrequests            off
        proxyvia                     on
        proxypreservehost       on
        proxypass                / balancer://tomcat-serer/
        proxypassreverse      / balancer://tomcat-serer/
<virtualHost>

systemctl restart nginx

2#在t1后端tomcat主机上修改conf/server.xml

vim /usr/local/tomcat/conf/server.xml


.....以上省略.....
   <Host name="t1"  appBase="/data/webapps" unpackWARs="true"
autoDeploy="true">
###################在<Host> </host>块中间加下面一段内容
##############################
     <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
 channelSendOptions="8">
 <Manager className="org.apache.catalina.ha.session.DeltaManager"
   expireSessionsOnShutdown="false"
   notifyListenersOnReplication="true"/>
 <Channel className="org.apache.catalina.tribes.group.GroupChannel">
 <Membership className="org.apache.catalina.tribes.membership.McastService"
 address="230.100.100.100"   #指定不冲突的多播地址
 port="45564"
 frequency="500"
 dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
  address="192.168.50.1"          #指定网卡的IP
  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.MessageDispatchIntercep
tor"/>
</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.ClusterSessionListener"/>
</Cluster>
#######################################以上内容是新加的
#################################
     </Host>
   </Engine>
 </Service>
</Server>

systemctl restart tomcat

3#在t2后端tomcat主机上修改conf/server.xml

vim /usr/local/tomcat/conf/server.xml


.....以上省略.....
   <Host name="t2"  appBase="/data/webapps" unpackWARs="true"
autoDeploy="true">
###################在<Host> </host>块中间加下面一段内容
##############################
     <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
 channelSendOptions="8">
 <Manager className="org.apache.catalina.ha.session.DeltaManager"
   expireSessionsOnShutdown="false"
   notifyListenersOnReplication="true"/>
 <Channel className="org.apache.catalina.tribes.group.GroupChannel">
 <Membership className="org.apache.catalina.tribes.membership.McastService"
 address="230.100.100.100"   #指定不冲突的多播地址
 port="45564"
 frequency="500"
 dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
  address="192.168.50.2"          #指定网卡的IP
  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.MessageDispatchIntercep
tor"/>
</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.ClusterSessionListener"/>
</Cluster>
#######################################以上内容是新加的
#################################
     </Host>
   </Engine>
 </Service>
</Server>

systemctl restart tomcat

4# 修改t1主机的应用的web.xml文件

cp -a /usr/local/tomcat/webapps/ROOT/WEB-INF/ /data/webapps/ROOT/

vim /data/webapps/ROOT/WEB-INF/web.xml

 </description>
<distributable/>  #添加此行
</web-app>

systemctl restart tomcat

5# 修改t2主机的应用的web.xml文件

cp -a /usr/local/tomcat/webapps/ROOT/WEB-INF/ /data/webapps/ROOT/

vim /data/webapps/ROOT/WEB-INF/web.xml

 </description>
<distributable/>  #添加此行
</web-app>

systemctl restart tomcat

1#订阅者监听频道
redis-cli
subscribe channel1   #订阅者事先订阅指定的频道，之后发布的消息才会收到

2#发布者发布消息

redis-cli
publish channel1 test1     
publish channel2 test2

3#订阅多个频道、多个匹配频道、所有频道
redis-cli 
subscribe channel1 channel2    #多个
subscribe chenn*   #多个匹配
subscribe *           #所有

1#内存空间优化

vim /usr/local/tomcat/bin/catalina.sh


JAVA_OPTS="-server -Xms4g -Xmx4g -Xss512k -Xmn1g -
XX:CMSInitiatingOccupancyFraction=65 -XX:+AggressiveOpts -XX:+UseBiasedLocking -
XX:+DisableExplicitGC -XX:MaxTenuringThreshold=10 -XX:NewRatio=2 -
XX:PermSize=128m -XX:MaxPermSize=512m -XX:CMSFullGCsBeforeCompaction=5 -
XX:+ExplicitGCInvokesConcurrent -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -
XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -
XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods"



#-server:服务器模式
#-xms：堆内存初始化大小
#-xmx：堆内存空间上限、
#-xx:NewSize=：新生代空间初始化大小
#--xx:MsxNewSize=:新生代空间最大值

2#线程池调整

vim /usr/local/tomcat/conf/server.xml

<Connector port="8080" protocol="HTTP/1.1"  connectionTimeout="20000"
redirectPort="8443" />