安装jdk环境
[root@localhost opt]#rpm -qpl jdk-8u201-linux-x64.rpm ##查看安装路径 [root@localhost jdk1.8.0_201-amd64]#vim /etc/profile #添加环境变量 export JAVA_HOME=/usr/java/jdk1.8.0_201-amd64 export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar export PATH=$JAVA_HOME/bin:$PATH [root@localhost opt]source /etc/profile [root@localhost opt]#mkdir /usr/local/tomcat [root@localhost opt]#mv apache-tomcat-9.0.16 /usr/local/tomcat/tomcat1 [root@localhost opt]#cd /usr/local/tomcat/ [root@localhost tomcat]#cp -a tomcat1/ tomcat2 [root@localhost tomcat]#ls tomcat1 tomcat2 [root@localhost tomcat]#vim tomcat2/conf/server.xml #只需要修改tomcat2中的主配置文件 222负载均衡，动静分离， 2.1图解69 #修改启动脚本和关闭脚本 #tomcat1 tomcat1/bin/startup.sh tomcat1/bin/shutdown.sh export CATALINA_HOME1=/usr/local/tomcat/tomcat1 export CATALINA_base1=/usr/local/tomcat/tomcat1 export TOMCAT_HOME1=/usr/local/tomcat/tomcat1 #tomcat2 tomcat2/bin/startup.sh tomcat1/bin/shutdown.sh export CATALINA_HOME2=/usr/local/tomcat/tomcat2 export CATALINA_base2=/usr/local/tomcat/tomcat2 export TOMCAT_HOME2=/usr/local/tomcat/tomcat2
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standalone模式，Tomcat单独运行，直接接受用户的请求，不推荐。
反向代理，单机运行，提供了一个Nginx作为反向代理，可以做到静态由nginx提供响应，动态jsp
代理给Tomcat
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LNMT：Linux + Nginx + MySQL + Tomcat
LAMT：Linux + Apache（Httpd）+ MySQL + Tomcat
前置一台Nginx，给多台Tomcat实例做反向代理和负载均衡调度，Tomcat上部署的纯动态页面更
适合
LNMT：Linux + Nginx + MySQL + Tomcat
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多级代理
LNNMT：Linux + Nginx + Nginx + MySQL + Tomcat
动态服务器的问题，往往就是并发能力太弱，往往需要多台动态服务器一起提供服务。如何把并发的压
力分摊，这就需要调度，采用一定的调度策略，将请求分发给不同的服务器，这就是Load Balance负载
均衡。
当单机Tomcat，演化出多机多级部署的时候，一个问题便凸显出来，这就是Session。而这个问题的由
来，都是由于HTTP协议在设计之初没有想到未来的发展。
2.2 部署ngnix负载均衡器环境简介：
ngnix：192.168.91.100
tomcat1：192.168.91.101
tomcat2：192.168.91.103
#关闭防火墙 #selinux #上传安装包 yum -y install pcre-devel zlib-devel gcc gcc-c++ make #安装依赖关系包 useradd -M -s /sbin/nologin nginx #新建用户 和组便于管理 cd /opt tar zxvf nginx-1.120.tar.gz -C /opt cd nginx-1.120 #进入目录编译安装 #配置参数解释 ./configure --prefix=/usr/local/nginx #安装路径 --user=nginx #指定用户名 --group=nginx #指定用户组 --with-http_stub_status_module #启用此模块支持状态统计 --with-file-aio #启用文件修改支持 --with-http_gzip_static_module #启用gzip静态压缩 --with-http_flv_module #启用flv模块，提供对flv视频流的支持 --with-http_ssl_module #启用ssl模块，提供ssl加密功能 --without ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_stub_status_module --with-file-aio --with-http_gzip_static_module --with-http_flv_module make && makeinstall ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/ #建立软连接 vim /lib/systemd/system/nginx.service [Unit] Description=nginx After=network.target [Service] Type=forking PIDFile=/usr/local/nginx/logs/nginx.pid ExecStart=/usr/local/nginx/sbin/nginx ExecReload=/usr/bin/kill -s HUP $MAINPID ExecStop=/usr/bin/kill -s QUIT $MAINPID PrivateTmp=true [Install] WantedBy=multi-user.target ##配置参数解释## [Unit] Description=nginx ####描述 After=network.target ####描述服务类别 [Service] Type=forking ###后台运行形式 PIDFile=/usr/local/nginx/logs/nginx.pid ###PID文件位置 ExecStart=/usr/local/nginx/sbin/nginx ###启动服务 ExecReload=/usr/bin/kill -s HUP $MAINPID ###根据PID重载配置 ExecStop=/usr/bin/kill -s QUIT $MAINPID ###根据PID终止进程 PrivateTmp=true [Install] WantedBy=multi-user.target chmod 754 /lib/systemd/system/ngnix.service #修改权限2.3部署tomcat
#关闭防火墙
#selinux
#上传安装包
[root@localhost opt]#tar zxf jdk-8u91-linux-x64.tar.gz
[root@localhost opt]#java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (build 1.8.0_131-b12)
OpenJDK 64-Bit Server VM (build 25.131-b12, mixed mode)
[root@localhost opt]#mv jdk1.8.0_91/ /usr/local/
[root@localhost opt]#cd /usr/local/
[root@localhost local]#ls
bin games jdk1.8.0_91 lib64 sbin src
etc include lib libexec share
[root@localhost local]#vim /etc/profile
export JAVA_HOME=/usr/local/jdk1.8.0_91
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JAVA_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
[root@localhost local]#source /etc/profile
[root@localhost opt]#cd /usr/local/tomcat/
[root@localhost tomcat]#./bin/startup.sh
[root@localhost tomcat]#netstat -ntap |grep 8080
[root@localhost tomcat]#cd webapps/
[root@localhost webapps]#ls
docs examples host-manager manager ROOT
[root@localhost webapps]#mkdir test
[root@localhost webapps]#vim test/index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
JSP test1 page
<% out.println("动态页面1,http://www.test1.com");%>
[root@localhost tomcat]#vim conf/server.xml
[root@localhost ~]#rpm -ivh jdk-8u201-linux-x64.rpm
[root@localhost jdk1.8.0_201-amd64]#vim /etc/profile
#添加环境变量
export JAVA_HOME=/usr/java/jdk1.8.0_201-amd64
export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar
export PATH=$JAVA_HOME/bin:$PATH
[root@localhost jdk1.8.0_201-amd64]#source /etc/profile
#刷新配置文件
动静分离配置
#tomcat1页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
JSP test1 page
<% out.println("动态页面1,http://www.test1.com");%>
[root@localhost tomcat]#/usr/local/tomcat/bin/startup.sh
#启动tomcat
#tomcat2页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
JSP test2 page
<% out.println("动态页面2,http://www.test2.com");%>
[root@localhost tomcat]#/usr/local/tomcat/bin/startup.sh
2.4nginx 配置
准备静态页面和图片
[root@localhost conf]#cd ../html/
echo '这是静态页面' > /usr/local/nginx/html/test.html
[root@localhost html]#mkdir /usr/local/nginx/html/static
[root@localhost html]#cd static/
#新建存放图片的目录,拖入图片
[root@localhost html]#vim /usr/local/nginx/conf/nginx.conf
#编辑配置文件
#gzip on;
upstream tomcat_server {
server 192.168.91.101:8080 weight=1;
server 192.168.91.103:8080 weight=1;
#配置负载均衡服务器列表，weight参数表示权重，权重越高，被分配到的概率越大
}
server {
listen 80；
server_name www.kgc.com
location ~ .*.jsp$ {
proxy_pass http://tomcat server;
proxy_set_header HOST $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location ~ .*.(gif|jpg|jpeg|png|bmp|html)$ {
#静态图片正则
root /usr/local/nginx/html/static;
expires 5d; }
location / {
root html;
index index.html index.htm; }
}
#测试
#http://192.168.91.100/1.jpg
#http://192.168.91.100/test.html
#http://192.168.91.100/index.jsp
upstream tomcat_server {
server 192.168.91.101:8080 weight=1;
server 192.168.91.103:8080 weight=1;
}
location ~ .*.jsp$ {
proxy_pass http://tomcat_server;
proxy_set_header HOST $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location ~* .*.(jpg|png|gif|swf|html)$ {
root /usr/local/nginx/html/static;
expires 1d;
}
location / {
root html;
index index.html index.htm;
}
roxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location ~* .*.(jpg|png|gif|swf|html)$ {
root /usr/local/nginx/html/static;
expires 1d;
}
location / {
root html;
index index.html index.htm;
}
