Centos 安装Nginx

CentOS安装Nginx

Nginx("engine x")是一款是由俄罗斯的程序设计师Igor Sysoev所开发高性能的 Web和 反向代理 服务器，也是一个 IMAP/POP3/SMTP 代理服务器。

在高连接并发的情况下，Nginx是Apache服务器不错的替代品。

系统平台: 阿里云CentOS7.6 64位

1.安装编译工具及库文件

yum -y install make zlib zlib-devel gcc-c++ libtool  openssl openssl-devel

2.首先要安装PCRE

PCRE 作用是让 Nginx 支持 Rewrite 功能

2.1 下载PCRE安装包:

cd /usr/local/src/
wget http://downloads.sourceforge.net/project/pcre/pcre/8.35/pcre-8.35.tar.gz

2.2 解压安装包

tar zxvf pcre-8.35.tar.gz

2.3 进入安装包目录

cd pcre-8.35

2.4 编译安装

./configure
make && make install

2.5 查看pcre版本

pcre-config --version

3.安装Nginx

3.1 下载 Nginx，下载地址：http://nginx.org/download/nginx-1.6.2.tar.gz

cd /usr/local/src/
wget http://nginx.org/download/nginx-1.6.2.tar.gz

3.2 解压安装包

tar zxvf nginx-1.6.2.tar.gz

3.3 进入安装包目录

cd nginx-1.6.2

3.4 编译安装

./configure --prefix=/usr/local/webserver/nginx --with-http_stub_status_module --with-http_ssl_module --with-pcre=/usr/local/src/pcre-8.35
make
make install

3.5 查看nginx版本

/usr/local/webserver/nginx/sbin/nginx -v

4. Nginx 配置

创建 Nginx 运行使用的用户 www：

/usr/sbin/groupadd www 
/usr/sbin/useradd -g www www

配置nginx.conf ，将/usr/local/webserver/nginx/conf/nginx.conf替换为以下内容

cat /usr/local/webserver/nginx/conf/nginx.conf

user www www;
worker_processes 2; #设置值和CPU核心数一致
error_log /usr/local/webserver/nginx/logs/nginx_error.log crit; #日志位置和日志级别
pid /usr/local/webserver/nginx/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 65535;
events
{
  use epoll;
  worker_connections 65535;
}
http
{
  include mime.types;
  default_type application/octet-stream;
  log_format main  '$remote_addr - $remote_user [$time_local] "$request" '
               '$status $body_bytes_sent "$http_referer" '
               '"$http_user_agent" $http_x_forwarded_for';
  
#charset gb2312;
     
  server_names_hash_bucket_size 128;
  client_header_buffer_size 32k;
  large_client_header_buffers 4 32k;
  client_max_body_size 8m;
     
  sendfile on;
  tcp_nopush on;
  keepalive_timeout 60;
  tcp_nodelay on;
  fastcgi_connect_timeout 300;
  fastcgi_send_timeout 300;
  fastcgi_read_timeout 300;
  fastcgi_buffer_size 64k;
  fastcgi_buffers 4 64k;
  fastcgi_busy_buffers_size 128k;
  fastcgi_temp_file_write_size 128k;
  gzip on; 
  gzip_min_length 1k;
  gzip_buffers 4 16k;
  gzip_http_version 1.0;
  gzip_comp_level 2;
  gzip_types text/plain application/x-javascript text/css application/xml;
  gzip_vary on;
 
  #limit_zone crawler $binary_remote_addr 10m;
 #下面是server虚拟主机的配置
 server
  {
    listen 80;#监听端口
    server_name localhost;#域名
    index index.html index.htm index.php;
    root /usr/local/webserver/nginx/html;#站点目录
      location ~ .*\.(php|php5)?$
    {
      #fastcgi_pass unix:/tmp/php-cgi.sock;
      fastcgi_pass 127.0.0.1:9000;
      fastcgi_index index.php;
      include fastcgi.conf;
    }
    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|ico)$
    {
      expires 30d;
  # access_log off;
    }
    location ~ .*\.(js|css)?$
    {
      expires 15d;
   # access_log off;
    }
    access_log off;
  }

}

检查配置文件nginx.conf的正确性命令：

/usr/local/webserver/nginx/sbin/nginx -t

4. Nginx命令

/usr/local/webserver/nginx/sbin/nginx                      # 启动
/usr/local/webserver/nginx/sbin/nginx -s reload            # 重新载入配置文件
/usr/local/webserver/nginx/sbin/nginx -s reopen            # 重启 Nginx
/usr/local/webserver/nginx/sbin/nginx -s stop              # 停止 Nginx

问题解决

nginx: [error] invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"
解决方案

/usr/local/webserver/nginx/sbin/nginx -c /usr/local/nigin/conf/nginx.conf
/usr/local/webserver/nginx/sbin/nginx -s reload