nginx的一些简单配置

小鱼儿 2022-06-12 06:56 203阅读 0赞

mac下修改/usr/local/nginx/conf/nginx.conf配置文件

反向代理加负载均衡：

user  nobody;
    worker_processes  auto;#nginx 进程数，建议按照cpu 数目来指定，一般为它的倍数，auto是自动检测
    
    #一个nginx 进程打开的最多文件描述符数目，理论值应该是最多打开文件数（ulimit -n）与nginx 进程数相除，
    #但是nginx 分配请求并不是那么均匀，所以最好与ulimit -n 的值保持一致，
    #这个是系统打开文件限制有关，如果系统没有更改这里设置再高也没有用，会报24: Too many open files的错误，
    #mac压力测试前先ulimit -n 10000，10000据说是mac的上限，linux上限是60000，但是也有人说8g的mac上限只有2500，
    #经过我的测试即使ulimit -n 10000设置了，worker_rlimit_nofile设置为10000和2048的效果没什么区别
    worker_rlimit_nofile 2048;
    
    error_log  logs/error.log;#错误日志
    #error_log  logs/error.log  notice;
    #error_log  logs/error.log  info;
    
    pid        logs/nginx.pid;#进程号
    
    events {
        worker_connections  2048;#每个进程允许的最多连接数， 理论上每台nginx 服务器的最大连接数为worker_processes*worker_connections
    	multi_accept on;
    	#use epoll;#使用epoll的I/O模型，linux2.6以上才能用，mac,windows都不能用
    }
    
    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;#连接记录
    
        sendfile        on;
        #tcp_nopush     on;
    
        #keepalive_timeout  0;
        keepalive_timeout  65;
    
        gzip  on;#打开压缩
    	
    	upstream backend {
    	    #ip_hash;
    		# 负载均衡，backend是组名
    	    server 127.0.0.1:5000;
    	    server 127.0.0.1:5001;
    	    server 127.0.0.1:5002;
    		server 127.0.0.1:5003;
    	}
    	
        server {
            listen       8089;#端口
            server_name  localhost;#ip
    
            #charset koi8-r;
    
            #access_log  logs/host.access.log  main;
    
            #location / {
                #root   html;
                #index  index.html index.htm;
            #}
            location / {
                try_files @uri @pp;
            }
            location @pp {
    			# 方向代理
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header Host $http_host;
                proxy_pass http://backend;#如果用负载均衡使用组名，如果只是反向代理使用要代理的ip和端口如http://127.0.0.1:5000
            }
    
            #error_page  404              /404.html;
            # redirect server error pages to the static page /50x.html
            error_page   500 502 503 504  /50x.html;#50x的错误页面
            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;
        #    }
        #}
    
    }