详解Linux系统配置nginx的负载均衡

详解Linux系统配置nginx的负载均衡

负载均衡的几种方式:

1.轮询:默认按照时间顺序对所有服务器一个一个的访问,如果有服务器宕机,会自动剔除;

2.weight:服务器的方位几率和weight成正比,这个可以在服务器配置不均的时候进行配置;

3.ip_hash:对每个请求的ip进行hash计算,并按照一定的规则分配对应的服务器(可解决session共享);

4.fair:按照每台服务器的响应时间(rt)来分配请求,rt知道优先分配;

5.url_hash:按照访问url的hash值来分配请求;

NGINX配置文件:

  user nginx;  worker_processes auto;  error_log /var/log/nginx/error.log;  pid /run/nginx.pid;    events {    worker_connections 1024;  }    http {    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 /var/log/nginx/access.log main;      sendfile      on;    tcp_nopush     on;    tcp_nodelay     on;    keepalive_timeout  65;    types_hash_max_size 2048;            include       blockip.conf;    #过虑IP    include       /etc/nginx/mime.types;    default_type    application/octet-stream;      # Load modular configuration files from the /etc/nginx/conf.d directory.    # See http://nginx.org/en/docs/ngx_core_module.html#include    # for more information.    include /etc/nginx/conf.d/*.conf;      upstream www.域名.com {    server IP1:端口;            #服务器1    server IP2:端口;            #服务器2    ip_hash;               #负载均衡的规则    }      server {      listen    80 default_server;   #NGINX 指向的服务域名      listen    [::]:80 default_server;      server_name IP;           #NGINX 指向的服务器 IP      root     /usr/share/nginx/html; #NGINX HTML 目录        # Load configuration files for the default server block.      include /etc/nginx/default.d/*.conf;        location / {        proxy_pass  http://www.域名.com; #nginx指向的域名     }        error_page 404 /404.html;        location = /40x.html {      #404页面      }        error_page 500 502 503 504 /500.html;        location = /500.html {      #500页面      }    }  }    

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