Nginx+tomcat session cluster会话保持实验
Nginx+tomcat session cluster会话保持实验实验要求：
1、nginx+tomcat 负载均衡2、会话保持
实验拓扑
ip网络规划
Nginxnode2:172.16.76.20
tomcatAnode3:172.16.76.30
tomcatBnode4:172.16.76.40
基础配置
node2：
# yum install nginx –y
node3:
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# yum install tomcat –y
# cd /var/lib/tomcat/webapps/
# mkdir -pv test/{claess,lib,WEB-INF
#vim test/index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatA</title></head>
<body>
<h1><font color="red">TomcatA.linuxinfo.top</font></h1>
<tablealign="centre" border="1">
<tr>
<td>SessionID</td>
<% session.setAttribute("linuxinfo.top","linuxinfo.top");%>
<td><%=session.getId() %></td>
</tr>
<tr>
<td>Createdon</td>
<td><%=session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
# systemctl restart tomcat
node4:
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# yum install tomcat –y
# cd /var/lib/tomcat/webapps/
# mkdir -pv test/{claess,lib,WEB-INF
#vim test/index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatB</title></head>
<body>
<h1><font color="blue">TomcatA.linuxinfo.top</font></h1>
<tablealign="centre" border="1">
<tr>
<td>SessionID</td>
<% session.setAttribute("linuxinfo.top","linuxinfo.top");%>
<td><%=session.getId() %></td>
</tr>
<tr>
<td>Createdon</td>
<td><%=session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
# systemctl restart tomcat
Nginx配置
node2
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# vim /etc/nginx/nginx.conf
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 1024;
}
http {
log_formatmain '$remote_addr - $remote_user [$time_local] "$request" '
'$status$body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
upstream tomcatser { #服务器组 配置负载均衡
server 172.16.76.30:8080;
server 172.16.76.40:8080;
# ip_hash
}
access_log/var/log/nginx/access.logmain;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
include/etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name_;
root /usr/share/nginx/html;
# Load configurationfiles for the default server block.
include/etc/nginx/default.d/*.conf;
#location 代理至后端服务器组；负载均衡
location / {
proxy_pass http://tomcatser;
location ~* (\.jsp|do)${
proxy_passhttp://tomcatser;
}
}
error_page 404 /404.html;
location =/40x.html {
}
error_page 500 502 503504 /50x.html;
location =/50x.html {
}
}
# systemctl restart nginx
tomcat配置
tomcatA:
1、配置tomcat session cluster
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# vim /etc/tomcat/server.xml
配置启用集群，将下列配置放置于<engine>或<host>中；
<Enginename="Catalina" defaultHost="localhost"jvmRoute="TomcatA">
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
channelSendOptions="8">
<ManagerclassName="org.apache.catalina.ha.session.DeltaManager"
expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"/>
<ChannelclassName="org.apache.catalina.tribes.group.GroupChannel">
<MembershipclassName="org.apache.catalina.tribes.membership.McastService"
address="228.0.76.4"#组播地址；可自行定义
port="45564"
frequency="500"
dropTime="3000"/>
<ReceiverclassName="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="172.16.76.30"#服务器ip地址；可仅修改此一处
port="4000"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
<SenderclassName="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<TransportclassName="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<InterceptorclassName="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
</Channel>
<ValveclassName="org.apache.catalina.ha.tcp.ReplicationValve"
filter=""/>
<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<DeployerclassName="org.apache.catalina.ha.deploy.FarmWarDeployer"
tempDir="/tmp/war-temp/"
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/>
<ClusterListenerclassName="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
<ClusterListenerclassName="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>
2、 在<Engine name="Catalina"defaultHost="localhost"> 中添加 jvmRoute="TomcatA"即
<Enginename="Catalina" defaultHost="localhost" jvmRoute="TomcatA">
#tomcatB主机 则将此修改为tomcatB
3、编辑WEB-INF/web.xml，添加<distributable/>元素
# cd /var/lib/tomcat/webapps/test/WEB-INF/
# lsweb.xml# cp /etc/tomcat/web.xml.# vim web.xml
node4：
1、将node3 tomcat配置文件server.xml拷贝一份至本机； # cd /etc/tomcat/
# scp 172.16.76.30:/etc/tomcat/server.xml .2、注：修改 <Engine> 中jvmRoute=TomcatB； 3、编辑WEB-INF/web.xml，添加<distributable/>元素
# cd /var/lib/tomcat/webapps/test/WEB-INF/
# ls web.xml# cp /etc/tomcat/web.xml.# vim web.xm
重启所有服务
# systemctl restart nginx
# systemctl restart tomcat
# systemctl restart tomcat
测试
至此实验完成；访问172.16.76.20/test/实现nginx负载均衡同时保持会话；
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