nginx配置

Nginx 

 

• Nginx如何处理一个请求   http://nginx.org/cn/docs/http/request_processing.html

 

• Nginx 配置文件  /etc/nginx/nginx.conf

 

user  nginx;                             # 使用该配置的用户，其他用户没有权限
worker_processes  1;                     #  开启的nginx进程数量
error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;           # nginx 运行的时候存放process id的文件
events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;      # 支持的文件类型
    default_type  application/octet-stream;   # 默认的文件类型
    access_log  /var/log/nginx/access.log  main;
    sendfile        on;
    keepalive_timeout  65;
    # Load modular configuration files from the /etc/nginx/conf.d directory.
    include /etc/nginx/conf.d/*.conf;         # 包括更多的config信息
    server {
        listen       80;
        server_name  localhost;               #  http://locahost:80，Host Name

        location / {   ＃ http://locahost:80/url   通过正则表达式，读取第一个符合的location
            root   /usr/share/nginx/html;      ＃ 默认的 public 文件夹
            index  index.html index.htm;       ＃ 默认的 index 页面
        }
    }
}

 

 

• Nginx 配置文件  /etc/nginx/conf.d/default.conf   

 

    location / {   # 反向代理配置，连接localhost:4567的web服务器
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_pass http://localhost:4567;
        }

 

 

• Nginx init script  /etc/init.d/nginx

 

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server
# processname: nginx
# config:      /etc/nginx/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /var/run/nginx.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/sbin/nginx"
prog=$(basename $nginx)

sysconfig="/etc/sysconfig/$prog"
lockfile="/var/lock/subsys/nginx"
pidfile="/var/run/${prog}.pid"

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f $sysconfig ] && . $sysconfig


start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    echo -n $"Starting $prog: "
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc -p $pidfile $prog
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    configtest_q || return 6
    stop
    start
}

reload() {
    configtest_q || return 6
    echo -n $"Reloading $prog: "
    killproc -p $pidfile $prog -HUP
    echo
}

configtest() {
    $nginx -t -c $NGINX_CONF_FILE
}

configtest_q() {
    $nginx -t -q -c $NGINX_CONF_FILE
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

# Upgrade the binary with no downtime.
upgrade() {
    local oldbin_pidfile="${pidfile}.oldbin"

    configtest_q || return 6
    echo -n $"Upgrading $prog: "
    killproc -p $pidfile $prog -USR2
    retval=$?
    sleep 1
    if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]];  then
        killproc -p $oldbin_pidfile $prog -QUIT
        success $"$prog online upgrade"
        echo 
        return 0
    else
        failure $"$prog online upgrade"
        echo
        return 1
    fi
}

# Tell nginx to reopen logs
reopen_logs() {
    configtest_q || return 6
    echo -n $"Reopening $prog logs: "
    killproc -p $pidfile $prog -USR1
    retval=$?
    echo
    return $retval
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest|reopen_logs)
        $1
        ;;
    force-reload|upgrade)
        rh_status_q || exit 7
        upgrade
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    status|status_q)
        rh_$1
        ;;
    condrestart|try-restart)
        rh_status_q || exit 7
        restart
        ;;
    *)
        echo $"Usage: $0 {start|stop|reload|configtest|status|force-reload|upgrade|restart|reopen_logs}"
        exit 2
esac