����̨�����, ��ΪCentOS-7-x86_64��С����װ, iptables��SELinux���ڹر�״̬, ���ú�yumԴ(base��epel). ���ÿ���, �Ա�ÿ��ʵ�����ٻָ�.
HostA OS: CentOS-7-x86_64 hostname: 80e54d87.twoyang.com eno16777736: 172.18.71.101/16 gateway: 172.18.0.1 HostB OS: CentOS-7-x86_64 hostname: b9cf468b.twoyang.com eno16777736: 172.18.71.102/16 gateway: 172.18.0.1 HostC OS: CentOS-7-x86_64 hostname: 1f5fafa6.twoyang.com eno16777736: 172.18.71.103/16 gateway: 172.18.0.1
�Ȳ���Memcached��MSM, ����nginx���ؾ��tomcat����ü�Ⱥ.
������������, ʱ��ͬ��, ͳһ����yumԴ. ��һ����ʵ���ĸ��ڵ�����������, ������ѡ��HostA.
# д�˸��ű������������ [root@80e54d87 ~]# wget https://raw.githubusercontent.com/wqiang0917/LearnInMagedu/master/shell/sshtrust.sh # ����Ⱥ�����нڵ�IP��ַ(��������)��������������б����� [root@80e54d87 ~]# vim sshtrust.sh HOSTS=("172.18.71.101" "172.18.71.102" "172.18.71.103") # �ַ���Կ, ������������. [root@80e54d87 ~]# bash sshtrust.sh --key # ͬ��ʱ�� [root@80e54d87 ~]# bash sshtrust.sh "ntpdate 172.18.0.1" [root@80e54d87 ~]# bash sshtrust.sh "hwclock --systohc" [root@80e54d87 ~]# bash sshtrust.sh date Tue Jun 7 21:54:22 CST 2016 Tue Jun 7 21:54:22 CST 2016 Tue Jun 7 21:54:22 CST 2016
# ��װ`OpenJDK`��`Tomcat` [root@80e54d87 ~]# yum install -y java-1.7.0-openjdk java-1.7.0-openjdk-devel tomcat tomcat-lib tomcat-admin-webapps tomcat-webapps [root@80e54d87 ~]# echo "export JAVA_HOME=/usr" > /etc/profile.d/java.sh [root@80e54d87 ~]# exec bash # ����sessappӦ��, ���ṩsession������ҳ. [root@80e54d87 ~]# mkdir -p /var/lib/tomcat/webapps/sessapp/{classes,lib,WEB-INF,META-INF} [root@80e54d87 ~]# cat << EOF > /var/lib/tomcat/webapps/sessapp/index.jsp <%@ page language="java" %> <html> <head><title>TomcatA</title></head> <body> <h1><font color="red">TomcatA.magedu.com</font></h1> <table align="centre" border="1"> <tr> <td>Session ID</td> <% session.setAttribute("magedu.com","magedu.com"); %> <td><%= session.getId() %></td> </tr> <tr> <td>Created on</td> <td><%= session.getCreationTime() %></td> </tr> </table> </body> </html> EOF # ��������, ��������˿�. [root@80e54d87 ~]# systemctl start tomcat.service [root@80e54d87 ~]# ss -tnl | grep "\(4000\|8009\|8080\)" LISTEN 0 100 :::8009 :::* LISTEN 0 100 :::8080 :::* LISTEN 0 50 ::ffff:172.18.71.101:4000 :::*
# ��װ`OpenJDK`��`Tomcat` [root@b9cf468b ~]# yum install -y java-1.7.0-openjdk java-1.7.0-openjdk-devel tomcat tomcat-lib tomcat-admin-webapps tomcat-webapps [root@b9cf468b ~]# echo "export JAVA_HOME=/usr" > /etc/profile.d/java.sh [root@b9cf468b ~]# exec bash [root@b9cf468b ~]# mkdir -p /var/lib/tomcat/webapps/sessapp/{classes,lib,WEB-INF,META-INF} # ����sessappӦ��, ���ṩsession������ҳ. [root@b9cf468b ~]# cat << EOF > /var/lib/tomcat/webapps/sessapp/index.jsp <%@ page language="java" %> <html> <head><title>TomcatB</title></head> <body> <h1><font color="blue">TomcatB.magedu.com</font></h1> <table align="centre" border="1"> <tr> <td>Session ID</td> <% session.setAttribute("magedu.com","magedu.com"); %> <td><%= session.getId() %></td> </tr> <tr> <td>Created on</td> <td><%= session.getCreationTime() %></td> </tr> </table> </body> </html> EOF # ��������, ��������˿�. [root@b9cf468b ~]# systemctl start tomcat.service [root@b9cf468b ~]# ss -tnl | grep "\(4000\|8009\|8080\)" LISTEN 0 100 :::8009 :::* LISTEN 0 100 :::8080 :::* LISTEN 0 50 ::ffff:172.18.71.101:4000 :::*
# ���Ȳ���ʹ��curlֱ�ӷ���HostA��HostB��sessapp. [root@1f5fafa6 ~]# curl http://172.18.71.101:8080/sessapp/ <html> <head><title>TomcatA</title></head> <body> <h1><font color="red">TomcatA.magedu.com</font></h1> <table align="centre" border="1"> <tr> <td>Session ID</td> <td>4D5C16AFE6FDA767E506729B0781A0B7</td> </tr> <tr> <td>Created on</td> <td>1465284908776</td> </tr> </table> </body> </html> [root@1f5fafa6 ~]# curl http://172.18.71.102:8080/sessapp/ <html> <head><title>TomcatB</title></head> <body> <h1><font color="blue">TomcatB.magedu.com</font></h1> <table align="centre" border="1"> <tr> <td>Session ID</td> <td>185E2BDA227CB166CA75B7FDC1A07BE4</td> </tr> <tr> <td>Created on</td> <td>1465284924384</td> </tr> </table> </body> </html> # ��װnginx��Ϊǰ�˵���������. [root@1f5fafa6 ~]# yum install -y nginx [root@1f5fafa6 ~]# vim /etc/nginx/nginx.conf ... upstream tcsrvs { server 172.18.71.101:8080 weight=1; server 172.18.71.102:8080 weight=2; } server { ... location / { proxy_pass http://tcsrvs; } } ... # ����� [root@1f5fafa6 ~]# nginx -t nginx: the configuration file /etc/nginx/nginx.conf syntax is ok nginx: configuration file /etc/nginx/nginx.conf test is successful # �������� [root@1f5fafa6 ~]# systemctl start nginx.service [root@1f5fafa6 ~]# ss -tnl | grep 80 LISTEN 0 128 *:80 *:* LISTEN 0 128 :::80 :::*
ʹ�����������http://172.18.71.103/sessapp/, ����ˢ��ҳ��. ���Կ���ͨ��ǰ�˵�����nginx�ڰ���Ȩ���ֵ���˷�����, ����SessionIDһֱ�ڱ仯. ��ʱʹ��Memcached��MSM�洢�Ự.
ע��: ��Ҫʹ��curl������, curl����daemon���, ִ������˳���, û�а취����Ự.
��HostA��HostB�������tomcat�����Ͼ�Ҫִ�����²���, ��HostAΪ��.
# ��װmemcached [root@80e54d87 ~]# yum install -y memcached [root@80e54d87 ~]# systemctl start memcached.service [root@80e54d87 ~]# ss -tnl | grep 11211 LISTEN 0 128 *:11211 *:* LISTEN 0 128 :::11211 :::* # ����MSM����������tomcat�Ĺ������Ŀ¼�� [root@80e54d87 ~]# ls msm/ javolution-5.4.3.1.jar memcached-session-manager-tc7-1.8.3.jar spymemcached-2.11.1.jar memcached-session-manager-1.8.3.jar msm-javolution-serializer-1.8.3.jar [root@80e54d87 ~]# cp msm/*.jar /usr/share/java/tomcat/ # �������� [root@80e54d87 ~]# vim /etc/tomcat/server.xml ... <Host ...> <Context path="/sessapp" docBase="/var/lib/tomcat/webapps/sessapp" reloadable="true"> <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager" memcachedNodes="n1:172.18.71.101:11211,n2:172.18.71.102:11211" # ʹ��non-sticky sessionsģʽ, ����ղο������й��ڷ�ճ��session�Ľ���. sticky="false" # session����ʹ��ͬ��ģʽ sessionBackupAsync="false" requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" transcoderFactoryClass="de.javakaffee.web.msm.serializer.javolution.JavolutionTranscoderFactory" /> </Context> </Host> ... # �������� [root@80e54d87 ~]# systemctl restart tomcat.service
���Թ۲쵽������һֱ�ڰ���Ȩ���ֵ���˷�����, ����SessionIDһֱû�б仯. ��ʱʹ�õ��DZ�ʶΪn2��memcached��Ϊ��session server. ˵��session����ȫ�ֹ���.
ע��: ��Ҫʹ��curl������, curl����daemon���, ִ������˳���, û�а취����Ự.
�رյ�ǰ��Ϊ��session server��HostB�ϵ�memcached, ����ˢ��ҳ��.
[root@b9cf468b ~]# systemctl stop memcached.service
���Թ۲쵽SessionIDû�б仯, ��session server�Ѿ��л������DZ�ʶΪn1��memcached. ˵������session server�������, �ỰҲ���ᶪʧ.
���ij��� ����ǿ�IJ����� ���ͣ�����ر����˳���http://wqiang.blog.51cto.com/6074114/1795869