nginx配置

#nginx

#安装

#搭建nginx
首先在本机下载好所需要的软件。
pcre http://www.pcre.org/
zlib http://www.zlib.net/
openssl http://www.openssl.org/source/
nginx http://nginx.org/en/download.html

apt-get install build-essential #ubuntu默认不支持c/c++编译。添加支持
apt-get install wget  gcc make #安装wget、gcc、make
#设置一个新的目录为nginx存放相关
mkdir -p /opt/local
cd /opt/local
#pcre
tar -xvf /usr/download/pcre-8.36.tar.bz2
cd pcre-8.36
./configure
make
make install
#zlib
tar -xvf /usr/download/nginx/zlib-1.2.8.tar.gz
cd zlib-1.2.8/
./configure
make
make install
#openssl
tar -zxvf /usr/download/nginx/openssl-0.9.8zg.tar.gz
cd openssl-0.9.8zg/
./config
make
make install
#nginx
tar -zxvf /usr/download/nginx/nginx-1.9.4.tar.gz
cd nginx-1.9.4.tar.gz
./configure
make
make install

nginx安装好的目录在/usr/local/nginx

如果安装完 运行/usr/local/nginx/sbin/nginx出现:

error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directory

解决办法是:

32位系统
#  ln -s /usr/local/lib/libpcre.so.1 /lib
64位系统
#  ln -s /usr/local/lib/libpcre.so.1 /lib64

启动成功后 就可以尝试访问
#负载均衡配置
###nginx配置文件

#user  nobody;
#工作子进程数量 =cpu数量 or 2*cpu
worker_processes  1;
#错误日志路径
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#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 {
include       mime.types;
default_type  application/octet-stream;
#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;
upstream localhost{
#weight 权重 值越大 被分配几率越大
server localhost:18080 weight=1;
server localhost:18082 weight=1;
}
server {
listen       80;
server_name  localhost;

#charset koi8-r;

#access_log  logs/host.access.log  main;

location / {
#root   html;
#index  index.html index.htm;
#请求转向真实地址 localhost为上面 upstream localhost的名字
proxy_pass http://localhost; proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

#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 ssl;
#    server_name  localhost;

#    ssl_certificate      cert.pem;
#    ssl_certificate_key  cert.key;

#    ssl_session_cache    shared:SSL:1m;
#    ssl_session_timeout  5m;

#    ssl_ciphers  HIGH:!aNULL:!MD5;
#    ssl_prefer_server_ciphers  on;

#    location / {
#        root   html;
#        index  index.html index.htm;
#    }
#}

}

修改配置之后

ps -ef |grep nginx
#kill -9
#nginx -s stop
nginx -s reload #重启
#然后重启

配置tomcat。配置不同的tomcat端口。上面配置的是两个tomcat 18080 18082
启动tocmat。
访问localhost.可以看到，请求分别分发到不同的tomcat中。