nginx日常调优

日志收集

配置nginx日志格式

log_format main     '$remote_addr - $remote_user [$time_local] "$request" $http_host '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" "$request_body" '
'$upstream_addr' '"$upstream_status" "$upstream_cache_status" ' '"$upstream_http_content_type" $upstream_response_time > $request_time';

配置日志存放目录

access_log  /data/nginx/logs/access.log main;

反代参数优化

    proxy_headers_hash_bucket_size 1024;
    proxy_headers_hash_max_size 512;
    proxy_connect_timeout 5;
    proxy_read_timeout 60;
    proxy_send_timeout 5;
    #设置代理服务器（nginx）保存用户头信息的缓冲区大小
    proxy_buffer_size 16k;
    #proxy_buffers缓冲区，网页平均在32k以下的设置
    proxy_buffers 4 64k;
    #高负荷下缓冲大小（proxy_buffers*2）
    proxy_busy_buffers_size 128k;
    proxy_temp_file_write_size 128k;
    #配置反代缓存临时目录
    proxy_temp_path /data/temp_dir;
    #配置反代缓存目录
    proxy_cache_path /data/cache levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=30g;

压缩配置

    gzip on;
    gzip_min_length  1k;
    gzip_buffers     4 16k;
    gzip_http_version 1.0;
    gzip_comp_level 9;
#指定压缩类型
    gzip_types    text/plain application/x-javascript text/css application/xml;
#加vary头
    gzip_vary on;

指定referer

map $http_referer $ref {
                default $http_referer;
                ~(https:\/\/aaa.com)(.*)  https://bbb.com$2;
                ~https://aaa.com  https://bbb.com;
        }

通过map映射实现修改referer的目的

日志分割

#!/bin/bash
base_path='/data/nginx/logs'               # 保存日志的目录
log_path=$(date -d yesterday +"%Y%m")           
day=$(date -d yesterday +"%Y-%m-%d")                  # 日期作为日志的标识
mkdir -p $base_path/$log_path                   # 根据年月管理日志
mv $base_path/access.log $base_path/$log_path/access_$day.log
mv $base_path/error.log $base_path/$log_path/error_$day.log
echo $base_path/$log_path/access_$day.log
kill -USR1 `cat /usr/local/nginx/logs/nginx.pid`   # 信号通知nginx重新开始记录日志