LNMP 架构——安装 Nginx-1.12.2

### 下载并解压

[root@dl-001 ~]# cd /usr/local/src
[root@dl-001 src]# wget http://nginx.org/download/nginx-1.12.2.tar.gz
--2017-12-24 22:22:26--  http://nginx.org/download/nginx-1.12.2.tar.gz
正在解析主机 nginx.org (nginx.org)... 206.251.255.63, 95.211.80.227, 2606:7100:1:69::3f, ...
正在连接 nginx.org (nginx.org)|206.251.255.63|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：981687 (959K) [application/octet-stream]
正在保存至: “nginx-1.12.2.tar.gz”

100%[============================>] 981,687     74.1KB/s 用时 9.3s   

2017-12-24 22:22:36 (103 KB/s) - 已保存 “nginx-1.12.2.tar.gz” [981687/981687])

[root@dl-001 src]# tar zxf nginx-1.12.2.tar.gz

编译，安装

[root@dl-001 src]# cd nginx-1.12.2
[root@localhost nginx-1.12.2]# ./configure --prefix=/usr/local/nginx
[root@dl-001 src]# make && make install

创建启动脚本

[root@dl-001 nginx-1.12.2]# vim /etc/init.d/nginx
#!/bin/bash
# chkconfig: - 30 21
# description: http service.
# Source Function Library
. /etc/init.d/functions
# Nginx Settings
NGINX_SBIN="/usr/local/nginx/sbin/nginx"
NGINX_CONF="/usr/local/nginx/conf/nginx.conf"
NGINX_PID="/usr/local/nginx/logs/nginx.pid"
RETVAL=0
prog="Nginx"
start() 
{
    echo -n $"Starting $prog: "
    mkdir -p /dev/shm/nginx_temp
    daemon $NGINX_SBIN -c $NGINX_CONF
    RETVAL=$?
    echo
    return $RETVAL
}
stop() 
{
    echo -n $"Stopping $prog: "
    killproc -p $NGINX_PID $NGINX_SBIN -TERM
    rm -rf /dev/shm/nginx_temp
    RETVAL=$?
    echo
    return $RETVAL
}
reload()
{
    echo -n $"Reloading $prog: "
    killproc -p $NGINX_PID $NGINX_SBIN -HUP
    RETVAL=$?
    echo
    return $RETVAL
}
restart()
{
    stop
    start
}
configtest()
{
    $NGINX_SBIN -c $NGINX_CONF -t
    return 0
}
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  reload)
        reload
        ;;
  restart)
        restart
        ;;
  configtest)
        configtest
        ;;
  *)
        echo $"Usage: $0 {start|stop|reload|restart|configtest}"
        RETVAL=1
esac
exit $RETVAL

更改配置文件权限并开机启动

[root@dl-001 nginx-1.12.2]# chmod 755 /etc/init.d/nginx 
[root@dl-001 nginx-1.12.2]# chkconfig --add nginx
[root@dl-001 nginx-1.12.2]# chkconfig nginx on

# 如果无法直接使用nginx命令，则表示/etc/init.d不在PATH变量内，可以通过修改/etc/profile来添加

修改配置文件

[root@dl-001 nginx-1.12.2]# mv /usr/local/nginx/conf/nginx.conf /usr/local/nginx/conf/nginx.conf.bak

[root@dl-001 nginx-1.12.2]# vim /usr/local/nginx/conf/nginx.conf
user nobody nobody;
worker_processes 2;
error_log /usr/local/nginx/logs/nginx_error.log crit;
pid /usr/local/nginx/logs/nginx.pid;
worker_rlimit_nofile 51200;
events
{
    use epoll;
    worker_connections 6000;
}
http
{
    include mime.types;
    default_type application/octet-stream;
    server_names_hash_bucket_size 3526;
    server_names_hash_max_size 4096;
    log_format combined_realip '$remote_addr $http_x_forwarded_for [$time_local]'
    ' $host "$request_uri" $status'
    ' "$http_referer" "$http_user_agent"';
    sendfile on;
    tcp_nopush on;
    keepalive_timeout 30;
    client_header_timeout 3m;
    client_body_timeout 3m;
    send_timeout 3m;
    connection_pool_size 256;
    client_header_buffer_size 1k;
    large_client_header_buffers 8 4k;
    request_pool_size 4k;
    output_buffers 4 32k;
    postpone_output 1460;
    client_max_body_size 10m;
    client_body_buffer_size 256k;
    client_body_temp_path /usr/local/nginx/client_body_temp;
    proxy_temp_path /usr/local/nginx/proxy_temp;
    fastcgi_temp_path /usr/local/nginx/fastcgi_temp;
    fastcgi_intercept_errors on;
    tcp_nodelay on;
    gzip on;
    gzip_min_length 1k;
    gzip_buffers 4 8k;
    gzip_comp_level 5;
    gzip_http_version 1.1;
    gzip_types text/plain application/x-javascript text/css text/htm 
    application/xml;
    server
    {
        listen 80;
        server_name localhost;
        index index.html index.htm index.php;
        root /usr/local/nginx/html;
        location ~ \.php$ 
        {
            include fastcgi_params;
            fastcgi_pass unix:/tmp/php-fcgi.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME /usr/local/nginx/html$fastcgi_script_name;
        }    
    }
}

检测并启动

[root@dl-001 nginx-1.12.2]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@dl-001 nginx-1.12.2]# /etc/init.d/nginx start

查看是否成功

[root@dl-001 ~]# /etc/init.d/nginx start
Starting nginx (via systemctl):                            [  确定  ]

[root@dl-001 ~]# ps aux | grep nginx
root       1302  0.0  0.0  20500   628 ?        Ss   21:40   0:00nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
nobody     1307  0.0  0.2  22944  3464 ?        S    21:40   0:00nginx: worker process
nobody     1308  0.0  0.2  22944  3212 ?        S    21:40   0:00nginx: worker process
root       2386  0.0  0.0 112680   976 pts/0    R+   21:42   0:00 grep --color=auto nginx