linux 下nginx安装

   一、一键安装四个依赖

yum -y install gcc zlib zlib-devel pcre-devel openssl openssl-devel

二、创建一个安装目录，并下载nginx安装包

cd /usr/local

mkdir nginx   #创建目录名为nginx的文件夹

cd nginx

wget http://nginx.org/download/nginx-1.16.1.tar.gz #下载nginx安装包

三、安装nginx

cd /usr/local/nginx  #进入nginx目录
tar zxvf nginx-1.16.1.tar.gz  -C  /usr/local/nginx #解压

cd /usr/local/nginx/nginx-1.16.1

./configure --prefix=/usr/local/nginx --conf-path=/usr/local/nginx/nginx.conf   #执行命令
如果执行下面的命令时报: -bash: ./configure: Permission denied 错误，则执行：

bash ./configure --prefix=/usr/local/nginx --conf-path=/usr/local/nginx/nginx.conf

如果执行下面的命令时报: 找不到logs文件夹 错误，则在安装目录中创建 logs文件夹

make #执行make命令

make install #执行make install命令

四、检查及启动nginx
/usr/local/nginx/sbin/nginx -t  #检查一下修改过的配置文件是否正确

   cd /usr/local/nginx/sbin  #进入安装目录

  ./nginx  #启动nginx

  如果启动没有报错，则启动成功。在浏览中输入服务器ip,如果能访问到nginx首页，则安装成功。有时可能还要关闭防火墙才能访问。

  五、如果修改配置文件后要重启nginx服务

   /usr/local/nginx/sbin/nginx -s reload  #重启nginx

附：nginx 优化后的配置文件

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  102400;#number的值不能大于操作系统能打开的最大的文件句柄数
    accept_mutex on;#优化同一时刻只有一个请求而避免多个睡眠进程被唤醒的设置，on为防止被同时唤醒，默认为off
    multi_accept on; #打开同时接受多个新网络连接请求的功能
    use epoll; #使用epoll事件驱动，因为epoll的性能相比其他事件驱动要好很多
}


http {
    server_tokens off; #隐藏ngxin版本号
    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"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    gzip  on;
   #gzip_static on;
    gzip_disable "msie6"; #不使用gzip IE6
    gzip_min_length 10k; #gzip压缩最小文件大小，超出进行压缩（自行调节）
    gzip_buffers 4 16k; #buffer 不用修改
    gzip_comp_level 3; #压缩级别:1-10，数字越大压缩的越好，时间也越长
    gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png; #压缩文件类型
    gzip_vary off;  #跟Squid等缓存服务有关，on的话会在Header里增加 "Vary: Accept-Encoding"

    server {
    
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            add_header Cache-Control "no-cache, no-store";
            root   /data/xyweb/;#
            index  index.html index.htm;
            expires -1;
        }

        #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;
        #}
    }


    server {
        listen  8089;#
        server_name  localhost;

        location / {
            root   /data/xyweb/machine;
            index  index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
    
    server {
        listen  8088;#
        server_name  localhost;

        location / {
            root   /data/xyweb/rzweb;
            index  index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
    
    server {
        listen  8086;#
        server_name  localhost;

        location / {
            root   /data/xyFiles;
            index  index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
    
    server {
        listen  80;#
        server_name  pay.xynetweb.com;
        location / {
            proxy_redirect off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass http://195.6.71.888:8090/service-pay/pay/;
        }
    }
    
    server {
        listen  80;#
        server_name  paytest.xynetweb.com;
        location / {
            proxy_redirect off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass http://195.6.4.448:6017/service-pay/pay/;
        }
        
        location /api/pay/jft/ {
            proxy_redirect off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass http://195.6.4.448:6017/service-pay-wx/pay/api/jft/;
        }
    }
    
    
    # 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;
    #    }
    #}

}

六、开启nginx的tcp功能
   1、安装功能模块

   cd /usr/local/nginx/nginx-1.16.1

   ./configure --with-stream=dynamic

   2、运行mak(此处一定不能使用make install命令，执行该命令会将原有nginx目录进行覆盖)
   3、复制文件（复制前关闭nginx）

    cp ./objs/nginx /usr/local/nginx/sbin/nginx
    4、修改配置文件

load_module modules/ngx_stream_module.so;
user  nobody;
worker_processes  auto;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    use epoll;
    worker_connections  1024;
}


stream {
    server {
        listen 8088;
        proxy_pass 192.168.1.1:8088;
    }
}

  5、重启nginx，配置成功