nginx access_log

nginx access_log 完全关闭

最近在配置本地nginx开发环境时，发现一个问题，当server段不指定access_log时，并且http段中也未指定任何 access_log参数时，它会默认写到logs/access.log这个文件，也就是access_log默认值就是”logs /access.log”，而且是所有server的访问日志。但nginx网站上我并未找到此配置的默认值。
如果我们不需要，在http段中加一行access_log off;然后在特定的server中配置自己想写入的日志。开发环境我默认不写日志，即不配置任何access_log，需要时才打开。
nginx的http段中，设置access log：
 

 

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  gzip  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $bytes_sent "$http_referer" '
                      '"$http_user_agent" "$gzip_ratio"';
 
log_format download  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $bytes_sent "$http_referer" "$http_user_agent" '
                      '"$http_range" "$sent_http_content_range"';
 
#access_log  logs/access.log  main;
access_log off;



nginx关闭日志功能access_log关闭

正确关闭方式:

• access_log off;
• error_log /dev/null;

access.log 按日期分割日志：

 listen 80;
    server_name _;
    if ($time_iso8601 ~ '(\d{4}-\d{2}-\d{2})') {
        set $day $1;
    }
    access_log /data/wwwlogs/sms_nginx_$day.log combined;

server
{
   ……
   #从系统时间中正则匹配出年月日
   if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})") {
      set $date $1$2$3;
   }
   
   # 日期记录日志
   access_log  logs/$date.host.access.log;
}

 

if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})")
{
    set $year $1;
    set $month $2;
    set $day $3;
    set $hour $4;
    set $minutes $5;
    set $seconds $6;
}

 

日志shell 脚本切割：

# vi logcron.sh
log_dir="/data/logs/nginx"
date_dir=`date +%Y%m%d`
/bin/mkdir -p ${log_dir}/${date_dir} > /dev/null 2>&1
/bin/mv ${log_dir}/access.log ${log_dir}/${date_dir}/access.log
kill -USR1 `cat /opt/nginx/logs/nginx.pid`
定义一个cron，在每天晚上23:59:50执行这个脚本，后面的事情就交给awstats了。

Nginx Access Log日志统计分析常用命令

https://www.cnblogs.com/freespider/p/9761789.html

http://blog.itpub.net/21220384/viewspace-2139952/

 

日志监控：

Nginx日志分割，异常邮件预警

https://blog.youkuaiyun.com/zhu6201976/article/details/85809239

Linux  shell 脚本发送邮件：

#shell send email
from_name="test@test.org"
from="test@<span style="font-family: Arial, Helvetica, sans-serif;">test</span>.com"
to="nick@test.com"
cc_name="AAA"
cc="AAA@test.com"
email_title="test@test.org"
email_content="/home/file_log.log"
email_subject="[Testing]"
echo -e "To: \"${email_title}\" <${to}>\nCc: \"${cc_name}\" <${cc}>\nFrom: \"${from_name}\" <${from}>\nSubject: ${email_subject}\n\n`cat ${email_content}`" | /usr/sbin/sendmail -t

 

按日期：

一：

if ($time_iso8601 ~ "(\d{4}-\d{2}-\d{2})") {
set $day $1;
}

access_log logs/host.access_$day.log combined;

结果：host.access_2020-08-27.log

-------------------------------------------------------------------------

二：
if ($time_iso8601 ~ "(\d{4})-(\d{2})-(\d{2})") {
set $time $1$2$3;
}
access_log logs/host.access_$time .log combined;

结果：host.access_20200826.log

两种写法其实是一样的，第一种把日期做成一个参数，第二个是把日期做成三个参数（一个括号一个参数）

combined是按默认日志格式

还可以按指定日志格式：

log_format time_log_format '$remote_addr - $remote_user [$time_local] "$request" - $request_time - $status $body_bytes_sent "$http_referer" "$http_user_agent" "$http_x_forwarded_for" - [$upstream_response_time]';

access_log logs/host.access_$time .log time_log_format;

 

按小时生成：

if ($time_iso8601 ~ "(\d{4}-\d{2}-\d{2}T\d{2})") {
set $day $1;
}

access_log  logs/host.access_$day.log  combined;

结果：host.access_2020-08-27T00.log