Nginx教程负载均衡机制

Love The Way You Lie 2023-08-17 15:55 115阅读 0赞

安装上传下载插件

\[root@localhost ~\]\# yum install -y lrzsz

设置主机名

关闭防火墙

\[root@localhost ~\]\# hostnamectl set-hostname nod-01

\[root@localhost ~\]\# systemctl stop firewalld

安装Nginx

上传文件到root的家目录下

\[root@nod-01 ~\]\# pwd

/root

\[root@nod-01 ~\]\# ll

total 964

\-rw-------. 1 root root 1410 Jul 7 22:46 anaconda-ks.cfg

\-rw-r--r--. 1 root root 981687 Jul 11 00:46 nginx-1.12.2.tar.gz

安装Nginx依赖

yum -y install gcc gcc-c++ autoconf automake

\[root@nod-01 ~\]\# yum -y install gcc gcc-c++ autoconf automake

\[root@nod-01 ~\]\# yum -y install zlib zlib-devel openssl openssl-devel pcre pcre-devel

查看CPU核数

\[root@nod-01 ~\]\# cat /proc/cpuinfo | grep processor | wc -l

安装模块

/root/nginx-1.12.2/configure --prefix=/usr/local/nginx    --with-http_dav_module --with-http_stub_status_module --with-http_addition_module --with-http_sub_module --with-http_flv_module --with-http_mp4_module

查看硬件核数

cat  /proc/cpuinfo | grep processor | wc -l

安装（xxx是查出来的硬件核数）

make -j XXX
    make install

增加用户

useradd -u 8000 -s /sbin/nologin nginx

查询增加的用户的信息

id nginx

![1276309-20190711155729348-915409830.png][]

开启Nginx服务

/usr/local/nginx/sbin/nginx　　开启服务
    /usr/local/nginx/sbin/nginx -t 测试配置文件是否正确的命令
    /usr/local/nginx/sbin/nginx -s reload 重载Nginx服务
    /usr/local/nginx/sbin/nginx -s stop　　停止服务

将Nginx的服务加入到开机启动服务中

echo '/usr/local/nginx/sbin/nginx &' >> /etc/rc.local

在centos7中安装netstat命令

yum -y install net-tools

查看nginx启动后的端口情况

netstat -anput

![1276309-20190711160238222-1253230008.png][]

修改配置文件，配置文件中内容

![ContractedBlock.gif][] ![ExpandedBlockStart.gif][]

user  nginx nginx;
    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  1024;
    }
    
    
    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"';
    
        #access_log  logs/access.log  main;
    
        sendfile        on;
        #tcp_nopush     on;
    
        #keepalive_timeout  0;
        keepalive_timeout  65;
    
        #gzip  on;
    
        server {
            listen       80;
            server_name  localhost;
    
            #charset koi8-r;
    
            #access_log  logs/host.access.log  main;
    
            location / {
                root   html;
                index  index.html index.htm;
            if ($request_uri ~* \.html$ ){
            proxy_pass http://htmlservers;
            }
             if ($request_uri ~* \.php$ ){
            proxy_pass http://phpservers;
            }
            proxy_pass http://picservers;
            }
    
            #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;
        #    }
        #}
        
        
        upstream htmlservers{
            server 192.168.3.129:80;
            server 192.168.3.130:80;
        }
        
        upstream phpservers{
            server 192.168.3.129:80;
            server 192.168.3.130:80;
        }
    
        
        upstream picservers{
            server 192.168.3.129:80;
            server 192.168.3.130:80;
        }
    
        
    
    }

nginx.conf

修改配置文件之后查看配置文件配置是否正确

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

重启Nginx

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

在页面访问Nginx可以正常访问，Nginx安装结束

安装两台Apache服务器做测试

安装后Apache

yum install httpd php -y

安装成功后再　　/var/www/html/ 　　目录下新建三个文件

![1276309-20190711161119279-1656831213.png][]

转载于:https://www.cnblogs.com/cerofang/p/11169786.html

[1276309-20190711155729348-915409830.png]: /images/20230810/80483a6b1c734756b85854c85bb3aef4.png
[1276309-20190711160238222-1253230008.png]: /images/20230810/bfa6a1abf8dd48d4967ed929dfbbc8c0.png
[ContractedBlock.gif]: https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif
[ExpandedBlockStart.gif]: /images/20230810/041c1a99bbca4f47afa9fb4fb6daa9a1.png
[1276309-20190711161119279-1656831213.png]: /images/20230810/72bbeca0600e4f85bb6f1f71e51ba8e2.png