詳解Linux系統(tǒng)配置nginx的負(fù)載均衡

負(fù)載均衡的幾種方式：

1.輪詢(xún)：默認(rèn)按照時(shí)間順序?qū)λ蟹?wù)器一個(gè)一個(gè)的訪問(wèn)，如果有服務(wù)器宕機(jī)，會(huì)自動(dòng)剔除；

2.weight：服務(wù)器的方位幾率和weight成正比，這個(gè)可以在服務(wù)器配置不均的時(shí)候進(jìn)行配置；

3.ip_hash：對(duì)每個(gè)請(qǐng)求的ip進(jìn)行hash計(jì)算，并按照一定的規(guī)則分配對(duì)應(yīng)的服務(wù)器（可解決session共享）；

4.fair：按照每臺(tái)服務(wù)器的響應(yīng)時(shí)間（rt）來(lái)分配請(qǐng)求，rt知道優(yōu)先分配；

5.url_hash：按照訪問(wèn)url的hash值來(lái)分配請(qǐng)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;    #過(guò)慮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;            #服務(wù)器1  server IP2:端口;            #服務(wù)器2  ip_hash;               #負(fù)載均衡的規(guī)則  }  server {    listen    80 default_server;   #NGINX 指向的服務(wù)域名    listen    [::]:80 default_server;    server_name IP;           #NGINX 指向的服務(wù)器 IP    root     /usr/share/nginx/html; #NGINX HTML 目錄    # 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頁(yè)面    }    error_page 500 502 503 504 /500.html;      location = /500.html {      #500頁(yè)面    }  }}

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