ngnix+tomcat转发、负载均衡

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前言

<font color=#999AAA >使用ngnix转发所有服务的网址到各个服务器，然后在各个服务器同时部署多个服务。</font>

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一、流程及图1.简易流程图如下

一、nginx服务器配置：1.下载并安装nginx1.1 将下载好的nginx包传到服务器/usr/local/目录下# cd /usr/local// -y表示遇到判断全部yes，autoconf表示自动配置，automake表示自动编译。# yum -y install gcc gcc-c++ autoconf automake //gcc、gcc-c++的库文件# yum install -y pcre pcre-devel //安装Nginx依赖包# yum install -y zlib zlib-devel# tar -zxvf nginx-1.10.2.tar.gz //解压缩# cd nginx-1.10.2 //切换到该目录下# ./configure //配置# make# make install //安装// 检验是否完成安装# cd /usr/local# ls //如果存在nginx文件夹，则安装成功// 注意：最后结束前不要去改解压后的nginx文件，否则安装不成功2.nginx配置#设置低权限用户，为了安全而设置的#user nobody;#工作衍生进程数worker_processes 10;#设置错误文件存放路径# error_log logs/error.log;# error_log logs/error.log notice;# error_log logs/error.log info;#设置pid存放路径（pid是控制系统中重要文件）pid logs/nginx.pid;#设置最大连接数events { worker_connections 102400;}http { #文件扩展名与文件类型映射表 include mime.types; map $time_iso8601 $logdate { ‘~^(?<ymd>\d{4}-\d{2}-\d{2})’ $ymd; default ‘date-not-found’; } #默认文件类型 default_type application/octet-stream; limit_req_zone $binary_remote_addr zone=qps1:1m rate=800r/s; #用来设置日志格式 log_format main ‘$remote_addr – $remote_user [$time_local] “$request” ‘ ‘$status $body_bytes_sent “$http_referer” ‘ ‘”$http_user_agent” “$http_x_forwarded_for” ‘ ‘”$upstream_addr” “$request_time” “$upstream_response_time”‘; access_log off; #用来指定日志文件的存放路径 # access_log logs/access-$logdate.log; # error_log logs/error-$logdate.log; #开启高效文件传输模式 sendfile on; #防止网络阻塞 tcp_nopush on; underscores_in_headers on; #长连接超时时间，单位是秒 keepalive_timeout 120; #(配置请求体缓存区大小) client_max_body_size 50M; #(设置客户端请求体最大值) #client_body_buffer_size 128k; #fastcgi_intercept_errors on; #开启gzip压缩，开启后，访问网页会自动压缩 #gzip on; #主要是用于设置一组可以在proxy_pass和fastcgi_pass指令中使用额代理服务器，默认负载均衡方式为轮询 upstream mysvr { #设置同一个cookie的两次/多次请求，请求的是同一台服务器 #ip_hash; #1.down 表示单前的server暂时不参与负载 #server 192.168.1.116 down; #3.backup： 其它所有的非backup机器down或者忙的时候，请求backup机器。所以这台机器压力会最轻。 #server 192.168.2.21 backup; #weigth参数表示权值，权值越高被分配到的几率越大,weight 默认为1.weight越大，负载的权重就越大。 #max_fails 配置的是熔断机制失败次数，即当访问一个服务器的时候，出现三次失败，就发生熔断 #fail_timeout 熔断时间，当服务器熔断超过10s后，nginx会重新尝试连接熔断的服务器 server 192.168.2.21:7798 weight=3 max_fails=6 fail_timeout=60; # 服务1 server 192.168.2.21:7798 weight=2 max_fails=6 fail_timeout=60; # 服务2 server 192.168.2.22:7798 weight=2 max_fails=6 fail_timeout=60; # 服务3 } #指定服务器的名称和参数 server { listen 80; server_name www.aaa.com; #proxy_connect_timeout 600; #proxy_read_timeout 600; #proxy_send_timeout 600; #设置字符 #charset koi8-r; #access_log logs/host.access.log main; #location / { # root html; # index index.html index.htm; #} location /ams.cloud/report/getError.do { return 200 ‘{code: “-1”, message: “系统错误”,success : false}’; } #location / 指用根目录做负载均衡 location / { #设置代理 proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://127.0.0.1:8898; #proxy_buffering off; } location /ams.api { #set $version $http_version; # 强制版本升级 #if ( $version != “2.0” ) { # return 200 ‘{code: “-1”, message: “版本过低请升级”,success : false}’; #} limit_req zone=qps1 burst=6000; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_pass http://mysvr; } location /CLodopfuncs.js { proxy_pass http://localhost:8000/CLodopfuncs.js; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } }二、服务器1、2、3配置（以一台讲解）1.jdk安装与配置2.tomcat1.tomcat安装2.tomcat配置1.1 server.xml<?xml version=”1.0″ encoding=”UTF-8″?><Server port=”8005″ shutdown=”SHUTDOWN”> <Listener className=”org.apache.catalina.startup.VersionLoggerListener” /> <Listener className=”org.apache.catalina.core.AprLifecycleListener” SSLEngine=”off” /> <Listener className=”org.apache.catalina.core.JreMemoryLeakPreventionListener” /> <Listener className=”org.apache.catalina.mbeans.GlobalResourcesLifecycleListener” /> <Listener className=”org.apache.catalina.core.ThreadLocalLeakPreventionListener” /> <GlobalNamingResources> <Resource name=”UserDatabase” auth=”Container” type=”org.apache.catalina.UserDatabase” description=”User database that can be updated and saved” factory=”org.apache.catalina.users.MemoryUserDatabaseFactory” pathname=”conf/tomcat-users.xml” /> </GlobalNamingResources> <Service name=”Catalina”> <Connector port=”8898″ protocol=”org.apache.coyote.http11.Http11AprProtocol” connectionTimeout=”5000″ minSpareThreads=”20″ maxThreads=”2048″ maxSpareThreads=”2048″ acceptCount=”2048″ minProcessors=”20″ maxProcessors=”2048″ enableLookups=”false” maxHttpHeaderSize =”102400″ maxPostSize=”83886080″ redirectPort=”8443″ /> <Engine name=”Catalina” defaultHost=”localhost”> <Realm className=”org.apache.catalina.realm.LockOutRealm”> <Realm className=”org.apache.catalina.realm.UserDatabaseRealm” resourceName=”UserDatabase”/> </Realm> <Host name=”localhost” appBase=”webapps” unpackWARs=”true” autoDeploy=”true”> <Valve className=”org.apache.catalina.valves.AccessLogValve” directory=”logs” prefix=”localhost_access_log” suffix=”.txt” pattern=”%h %l %u %t &quot;%r&quot; %s %b” /> </Host> </Engine> </Service></Server>1.2 web.xml<?xml version=”1.0″ encoding=”UTF-8″?><web-app xmlns=”http://xmlns.jcp.org/xml/ns/javaee” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd” version=”3.1″> <servlet> <servlet-name>default</servlet-name> <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class> <init-param> <param-name>debug</param-name> <param-value>0</param-value> </init-param> <init-param> <param-name>listings</param-name> <param-value>true</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet> <servlet-name>jsp</servlet-name> <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class> <init-param> <param-name>fork</param-name> <param-value>false</param-value> </init-param> <init-param> <param-name>xpoweredBy</param-name> <param-value>false</param-value> </init-param> <load-on-startup>3</load-on-startup> </servlet> <!– The mapping for the default servlet –> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!– The mappings for the JSP servlet –> <servlet-mapping> <servlet-name>jsp</servlet-name> <url-pattern>*.jsp</url-pattern> <url-pattern>*.jspx</url-pattern> </servlet-mapping> <session-config> <session-timeout>30</session-timeout> </session-config> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>

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随心所往，看见未来。Follow your heart，see night！<br/>欢迎点赞、关注、留言，一起学习、交流！

，再回头，便生出无限羁绊。那是彼此的刺在对方心里留下的痕迹，