Nginx设置负载平衡进程及代码分享，负载平衡实现道理

负载平衡是我们大流量网站要做的一个对象，下面我来给各人先容在NGINX处事器长举办负载平衡设置要领，但愿对有需要的同学有所辅佐哦。负载平衡先来简朴相识一下什么是负载平衡，单从字面上的意思来领略就可以表明N台处事器平均分管负载，不会因为某台处事器负载高宕机而某台处事器闲置的环境。那么负载平衡的前提就是要有多台处事器才气实现，也就是两台以上即可。

直接上乐成的参数，实现了本机平衡并本机的NGINX也用起来：

A、主NGINX：

#usernobody;worker_processes1;#error_loglogs/error.log;#error_loglogs/error.lognotice;#error_loglogs/error.loginfo;pid/var/run/nginx.pid;events{worker_connections1024;}http{includemime.types;default_typeapplication/octet-stream;#log_formatmain'$remote_addr-$remote_user[$time_local]"$request"'#'$status$body_bytes_sent"$http_referer"'#'"$http_user_agent""$http_x_forwarded_for"';#access_loglogs/access.logmain;sendfileon;#tcp_nopushon;#keepalive_timeout0;keepalive_timeout65;#gzipon;upstreama.com{#hash$cookie_jsessionid;hash$remote_addrconsistent;server192.168.142.128:8080weight=3;server192.168.142.129:80weight=10;#hash$cookie_jsessionid;#server192.168.142.130:80;#ip_hash;#hash_again1;#consistent_hash$remote_addr：可以按照客户端ip映射#consistent_hash$request_uri：按照客户端请求的uri映射#consistent_hash$args：按照客户端携带的参数举办映射}server{listen80;server_namea.com;location/{indexindex.html;root/usr/html;proxy_passhttp://a.com;proxy_set_headerHost$host;proxy_set_headerX-Real-IP$remote_addr;proxy_set_headerX-Forwarded-For$proxy_add_x_forwarded_for;}}server{listen8080;server_namea.com;#access_loglogs/host.access.logmain;location/{roothtml;indexindex.htmlindex.htmindex.php;}location~.*.(php|php5)?${fastcgi_pass127.0.0.1:9000;fastcgi_indexindex.php;fastcgi_paramSCRIPT_FILENAME/var/www/blog$fastcgi_script_name;includefastcgi.conf;}location~.*.(gif|jpg|jpeg|png|bmp|swf)${expires30d;}location~.*.(js|css)?${expires12h;}access_logoff;#error_page404/404.html;#redirectservererrorpagestothestaticpage/50x.html#error_page500502503504/50x.html;location=/50x.html{roothtml;}#proxythePHPscriptstoApachelisteningon127.0.0.1:80##location~.php${#proxy_passhttp://127.0.0.1;#}#passthePHPscriptstoFastCGIserverlisteningon127.0.0.1:9000##location~.php${#roothtml;#fastcgi_pass127.0.0.1:9000;#fastcgi_indexindex.php;#fastcgi_paramSCRIPT_FILENAME/scripts$fastcgi_script_name;#includefastcgi_params;#}#denyaccessto.htaccessfiles,ifApache'sdocumentroot#concurswithnginx'sone##location~/.ht{#denyall;#}}#anothervirtualhostusingmixofIP-,name-,andport-basedconfiguration##server{#listen8000;#listensomename:8080;#server_namesomenamealiasanother.alias;#location/{#roothtml;#indexindex.htmlindex.htm;#}#}#HTTPSserver##server{#listen443ssl;#server_namelocalhost;#ssl_certificatecert.pem;#ssl_certificate_keycert.key;#ssl_session_cacheshared:SSL:1m;#ssl_session_timeout5m;#ssl_ciphersHIGH:!aNULL:!MD5;#ssl_prefer_server_cipherson;#location/{#roothtml;#indexindex.htmlindex.htm;#}#}}