ngnix+tomcat转发、负载均衡
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目录
前言
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。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nginx
1.1 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.tomcat
1.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 "%r" %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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