nginx.conf配置整理笔记（反向代理、缓存、均衡负载）更新中

#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 {
    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;
upstream webservs {#均衡负载的server组
#ip_hash;#根据客户端的ip进行hash分配到相应的server，从而保证同一个ip请求分配到相同主机，可以解决跨服务器session共享问题
server server1ip weight=1 max_fails=2 fail_timeout=2;  #weight表示权重，fails这些表示无法连接到尝试的次数和时间
server server2ip weight=1 max_fails=2 fail_timeout=2;
#server 127.0.0.1:8080 backup;#这个是显示错误页面的server，如果这里使用到了ip_hash，就不能使用这一项，否则启动报错
}

server {#显示错误页面的server
listen 8080;
server_name localhost;
root /web/errorpages;
index index.html;
}

proxy_cache_path /nginx/cache/first levels=1:2:1 keys_zone=first:20m max_size=1G; #缓存

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

#给http头部加上两个变量
add_header X-Via $server_addr;#显示服务器地址
add_header X-Cache $upstream_cache_status;#显示缓存是否命中

#        location / {
#            root   html;
#            index  index.html index.htm;
#        }
location / {       #在这里转发请求到均衡负载组的server
            proxy_pass http://webservs/;
            proxy_set_header X-real-IP $remote_addr;
        }



location ~* ^/forum {
proxy_pass http://serverip;
proxy_set_header X-real-IP $remote_addr;#转发给后端的时候，后端都有一个独特的首部叫做X-real-IP，这个存放真正的客户端请求ip
proxy_cache first;
proxy_cache_valid 10m;
}
location /forum {
root /web;
index index.html index.htm;
}

        #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;
    #    }
    #}

}

自定义反向代理的404页面

#反向代理并设置404自定义页面
        server {
                listen       80;
                server_name  域名;


        #charset koi8-r;



                proxy_set_header X-Forwarded-Host $host;
                proxy_set_header X-Forwarded-Server $host;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header Host $host; #携带真实的请求域名
                proxy_set_header X-real-IP $remote_addr;        #转发给后端的时候，后端都有一个独特的首部叫做X-real-IP，这个存放真正的客户端请求ip              

                proxy_intercept_errors  on;
                recursive_error_pages   on;

                location / {
                        proxy_pass server地址;
                        proxy_connect_timeout 600;
                        proxy_read_timeout 600;
                        error_page 404 /404.html;
                }
                location /404.html {
                        root /nginx/page;
                        index index.html index.htm;

                }

        }