nginx, tomcat 集群

http://pengranxiang.iteye.com/blog/1135909

目标：同一台Linux主机上 安装 Nginx 和 两个 Tomcat 的集群

1. 下载安装 Nginx

地址：http://nginx.org/download/nginx-1.0.4.tar.gz

Shell代码


cd /usr/local/src/nginx

wget http://nginx.org/download/nginx-1.0.4.tar.gz
tar zxvf nginx-1.0.4.tar.gz

cd nginx-1.0.4

./configure

make

make install

2. Tomcat的下载安装配置，请参照 http://pengranxiang.iteye.com/admin/blogs/1135072
3. 配置 Nginx 负载均衡 来集成 两个Tomcat

修改配置文件：$NGNINX_HOME/conf/nginx.conf

Conf代码


#Nginx所用用户和组，window下不指定

user nobody;

#工作的子进程数量（通常等于CPU数量或者2倍于CPU）

worker_processes 1;

#错误日志存放路径

#error_log logs/error.log;

#error_log logs/error.log notice;

error_log logs/error.log info;

#指定pid存放文件

pid logs/nginx.pid;

events {

#使用网络IO模型linux建议epoll，FreeBSD建议采用kqueue，window下不指定。

use epoll;

#允许最大连接数

worker_connections 1024;

}

http {

#mine.types内定义各文件类型映像

include mime.types;

default_type application/octet-stream;

#定义日志格式

#log_format main '$remote_addr - $remote_user [$time_local] "$request" '

# '$status $body_bytes_sent "$http_referer" '

# '"$http_user_agent" "$http_x_forwarded_for"';

#access_log logs/access.log main;

sendfile on;

#tcp_nopush on;

#keepalive_timeout 0;

keepalive_timeout 65;

#gzip on;

#负载均衡集群设置

upstream tomcats {

server localhost:8080 weight=1;

server localhost:9080 weight=1;

#根据ip计算将请求分配各那个后端tomcat，许多人误认为可以解决session问题，其实并不能。

#同一机器在多网情况下，路由切换，ip可能不同

ip_hash;

}

server {

listen 80;

server_name localhost;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {

index index.shtml;

proxy_pass http://tomcats;
proxy_set_header X-Real-IP $remote_addr;

client_max_body_size 100m;

}

#error_page 404 /404.html;

# redirect server error pages to the static page /50x.html

#

error_page 500 502 503 504 /50x.html;

location = /50x.html {

root html;

}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80

#

#location ~ \.php$ {

# proxy_pass http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

#

#location ~ \.php$ {

# root html;

# fastcgi_pass 127.0.0.1:9000;

# fastcgi_index index.php;

# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;

# include fastcgi_params;

#}

# deny access to .htaccess files, if Apache's document root

# concurs with nginx's one

#

#location ~ /\.ht {

# deny all;

#}

}

# another virtual host using mix of IP-, name-, and port-based configuration

#

#server {

# listen 8000;

# listen somename:8080;

# server_name somename alias another.alias;

# location / {

# root html;

# index index.html index.htm;

# }

#}

# HTTPS server

#

#server {

# listen 443;

# server_name localhost;

# ssl on;

# ssl_certificate cert.pem;

# ssl_certificate_key cert.key;

# ssl_session_timeout 5m;

# ssl_protocols SSLv2 SSLv3 TLSv1;

# ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;

# ssl_prefer_server_ciphers on;

# location / {

# root html;

# index index.html index.htm;

# }

#}

}

安装以上配置即可实现集群。

关于Nginx启动

直接执行： $NGINX_HOME/sbin/nginx 即可

为了方便，可以自定义一个脚本文件

vim nginx.sh

Sh代码


#!/bin/bash

case $1 in

start)

/usr/local/nginx/sbin/nginx;

;;

stop)

kill -2 `ps -ef|grep "/usr/local/nginx/sbin/nginx" | grep -v "grep"|awk '{print $2}'`

;;

restart)

$0 stop

$0 start

;;

*)

echo $"Usage; $0{start|stop|restart}"

exit 1

esac

exit 0