nginx配置优化

user www;
worker_processes auto;
worker_cpu_affinity auto;
worker_rlimit_nofile 65535;        #Nginx 工作进程可以打开的最大文件描述符数量,查看系统文件描述符数再确认
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

include /usr/share/nginx/modules/*.conf;

events {
    use epoll;                    #默认开启的：epoll 是一种在 Linux 操作系统上用于处理大量并发连接的高效事件通知机制
    multi_accept on;            　#默认关闭：启用了 Nginx 的多连接接受模式。这意味着 Nginx 在接受新连接时可以一次性处理多个连接。
    worker_connections 20240;     #每个工作进程能够同时处理的最大连接数。(worker_rlimit_nofile > worker_connections)
}

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
    log_format  access_format '[$time_local] "$http_x_forwarded_for" $remote_user "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" - $remote_addr';

    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             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    gzip  on;                    #启用Gzip压缩功能
    gzip_min_length  256;        #设置压缩的最小响应体大小
    gzip_buffers     4 16k;
    gzip_http_version 1.0;
    gzip_types  text/plain application/x-javascript text/css application/xml application/json application/javascript;
    gzip_comp_level 3;
    gzip_vary on;

    include /etc/nginx/conf.d/*.conf;
}

目录conf.d/test.conf

upstream grafana {
        server 192.168.213.224:3000 weight=1 max_fails=2 fail_timeout=3s;
　　　　 #keepalive 3000; #upstream的最大数量,当这个数量被突破时，最近使用最少的连接将被关闭
}

server {
    listen 80;
    server_name  grafana.test.cn;
    rewrite ^(.*)$ https://$host$1 permanent;        #HTTP请求重定向到HTTPS请求
}

server {
    listen       443 ssl http2;
    server_name  grafana.test.cn;
    
    ssl_certificate     "/etc/nginx/ssl/test.cn.pem";
    ssl_certificate_key "/etc/nginx/ssl/test.cn.key";
    ssl_session_cache shared:SSL:1m;     #SSL会话缓存的大小
    ssl_session_timeout  10m;            #SSL会话缓存的超时时间
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    
    location / {
        proxy_pass http://grafana;
        rewrite ^/grafana/(.*) /$1 break;
        proxy_buffering  off;                #关闭代理缓冲，适用于实时或动态内容，避免缓冲延迟
        proxy_http_version 1.1;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}