Nginx 配置模板

#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  1024;
}


http {

    client_max_body_size 100m;

    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;

    # http://culture.example.com
    server {
        listen         80;
        server_name    culture.example.com;

        location / {
            proxy_pass http://192.168.1.111:8080;
        }
    }

    # http://game.example.com
    server {
        listen         80;
        server_name    game.example.com;

        location / {
            proxy_pass http://192.168.1.111:8081;
        }
    }

    # http://rank.example.com
    server {
        listen         80;
        server_name    rank.example.com;

        location / {
            proxy_pass http://192.168.1.111:8082;
        }
    }

    # http://console.example.com 代理前端页面
    server {
        listen         80;
        server_name    console.example.com;

        location / {
            proxy_pass http://console.example.com:9527;
        }
    }

    # http://html.example.com
    server {
        listen       80;
        server_name  html.example.com;

        location / {
             try_files $uri $uri/ /index.html;
             root   /home/example/html;
             index  index.html#/login;
        }

        location @router {
             rewrite ^.*$ /index.html last;
        }
    }

    # 负载配置 weight 请求分配的权重
    upstream test.example.com {
        server 192.168.1.111:8088 weight=2;
        server 192.168.1.112:8088 weight=3;
        server hello.example.com:8088 weight=1;
    }

    server {
        listen 80;

        location / {
            proxy_pass http://test.example.com;
        }
    }

    # http://console.example.com 后台管理前端
    server {
        listen       9527;
        server_name  console.example.com;
        client_max_body_size    1000M;
        # 解决跨域问题
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods *;
        add_header Access-Control-Allow-Headers *;
        #root   D:/software/nginx-1.14.0/dist;
        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        if ($request_method = 'OPTIONS') {
            return 204;
        }

        location / {
            # root html;
            root /home/admin/front/dist;
            try_files $uri $uri/ @router;
            index  index.html index.htm;
            proxy_set_header Host $http_host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        # 解决页面刷新问题
        location @router {
            rewrite ^.*$ /index.html last;
        }

        #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;
        }

    }
}

upstream模块

server指令:配置处理请求的服务器IP或域名,端口可选,不配置默认使用80端口。通过上面的配置,Nginx默认将请求依次分配给111,112,113来处理,可以通过修改下面这些参数来改变默认的分配策略:

  • weight
    默认为1,将请求平均分配给每台server
upstream test.example.com {
	server 192.168.1.111:8888 weight=2;  # 2/6次
	server 192.168.1.112:8888 weight=3;  # 3/6次
	server 192.168.1.113:8888 weight=1;  # 1/6次
}

上例配置,表示6次请求中,111分配2次,112分配3次,113分配1次

  • max_fails
    默认为1。某台Server允许请求失败的次数,超过最大次数后,在fail_timeout时间内,新的请求将不会分配给这台机器。如果设置为0,Nginx会将这台Server置为永久无效状态,然后将请求发给定义了proxy_next_upstream, fastcgi_next_upstream, uwsgi_next_upstream, scgi_next_upstream, and memcached_next_upstream指令来处理这次错误的请求。
  • fail_timeout
    默认为10秒。某台Server达到max_fails次失败请求后,在fail_timeout期间内,nginx会认为这台Server暂时不可用,不会将请求分配给它
upstream test.example.com {
    server 192.168.1.111:8888 weight=2 max_fails=3 fail_timeout=15;
    server 192.168.1.112:8888 weight=3;
    server 192.168.1.113:8888 weight=1;
}

192.168.1.111这台机器,如果有3次请求失败,nginx在15秒内,不会将新的请求分配给它。

  • backup
    备份机,所有服务器挂了之后才会生效
upstream test.example.com {
    server 192.168.1.111:8888 weight=2 max_fails=3 fail_timeout=15;
    server 192.168.1.112:8888 weight=3;
    server 192.168.1.113:8888 backup;
}

在111和112都挂了之前,113为不可用状态,不会将请求分配给它。只有当111和112都挂了,113才会被启用。

  • down
    标识某一台server不可用。可能能通过某些参数动态的激活它吧,要不真没啥用。
upstream test.example.com {
    server 192.168.1.111:8888 weight=2 max_fails=3 fail_timeout=15;
    server 192.168.1.112:8888 down;
    server 192.168.1.113:8888 backup;
}

表示112这台Server为无效状态,不会将请求分配给它。

  • max_conns
    限制分配给某台Server处理的最大连接数量,超过这个数量,将不会分配新的连接给它。默认为0,表示不限制。注意:1.5.9之后的版本才有这个配置
upstream test.example.com {
    server 192.168.1.111:8888 max_conns=1110;
}

表示最多给111这台Server分配1110个请求,如果这台Server正在处理1110个请求,nginx将不会分配新的请求给到它。假如有一个请求处理完了,还剩下999个请求在处理,这时nginx也会将新的请求分配给它。

  • resolve
    将server指令配置的域名,指定域名解析服务器。需要在http模块下配置resolver指令,指定域名解析服务
http {
    resolver 192.168.1.2;

    upstream u {
        zone ...;
        ...
        server hello.example.com resolve;
    }
}

上面配置表示hello.example.com域名,由192.168.1.2服务器来负责解析。(私有域名服务器可自行部署,不然也可以使用阿里云或者华为云服务提供的域名解析服务)
upstream模块server指令的其它参数和详细配置说明,请参考官方文档

posted @ 2021-06-04 15:07  itwetouch  阅读(350)  评论(0编辑  收藏  举报