Nginx splits and polls log files by day

Nginx splits and polls log files by day
Logrotate

Logrotate Introduction
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The logrotate program is a log file management tool. It is used to delete the old log file and create a new log file. We call it a "dump ". We can dump the logs based on the log file size or the number of days. This process is generally executed by the cron program.
The logrotate program can also be used to compress log files and send logs to the specified email.
The logrotate configuration file is/etc/logrotate. conf. The main parameters are as follows:

Parameter Functions
Compress compresses logs after dumping through gzip
This parameter is used when nocompress does not require compression.
Copytruncate is used to back up and truncate the current log file that is still being opened.
Nocopytruncate backs up log files but does not truncate
Create mode owner group dump file, create a new log file using the specified file mode
Nocreate does not create a new Log File
When delaycompress and compress are used together, the dumped log files are compressed only when they are transferred to the next dump.
Nodelaycompress overwrites the delaycompress option, and the dump is compressed at the same time.
The error message sent to the specified Email address when the errors address exists
Ifempty dumps even empty files. This is the default logrotate option.
Notifempty is not dumped if it is an empty file
Mail address sends the dumped log file to the specified E-mail address
Do not send log files when nomail dump
The log file after the olddir directory is dumped is placed in the specified directory and must be in the same file system as the current log file.
The log file after noolddir dumping and the current log file are placed in the same directory
Prerotate/endscript can put this pair of commands that need to be executed before dumping. These two keywords must be in a separate line.
Postrotate/endscript can be placed into this pair of commands to be executed after the dump. These two keywords must be entered separately.
Daily indicates that the dump cycle is daily.
Weekly indicates that the dump cycle is weekly.
Monthly specifies the dump cycle as per month
Rotate count indicates the number of dump times before the log file is deleted. 0 indicates no backup, and 5 indicates five backups are retained.
Tabootext [+] list to prevent logrotate from dumping files with the specified extension. The default extension is. rpm-orig,
. Rpmsave, v, and ~
Size: dump a log file only when it reaches the specified Size. size can specify bytes (default), KB (sizek), or MB.
(Sizem ).

RedHat Linux)
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Install nginx in the/usr/local/nginx directory
Nginx access. log is stored in/usr/local/nginx/logs/access. log

Step 1:

Add an nginx file in the/etc/logrotate. d/directory as follows:

/usr/local/nginx/logs/access.log {dailyrotate 365postrotate/bin/kill -USR1 `/bin/cat /usr/local/nginx/logs/nginx.pid`endscript}

Note that the include/etc/logrotate. d in/etc/logrotate. conf must be in the uncommented state.

Step 2:

Logrotate is a management tool for linux system logs. It can rotate, compress, and send system log files by email. The default logrotate is added to cron (cron is a linux scheduled execution tool that can run jobs without manual intervention. in daily as a daily task. /Var/lib/logrotate/statue records the time when logrotate last rotated log files by default.
Therefore, to achieve automatic log polling, you also need to configure the cron/etc/crontab file, as shown below:

SHELL=/bin/bashPATH=/sbin:/bin:/usr/sbin:/usr/binMAILTO=rootHOME=/# For details see man 4 crontabs# Example of job definition:# .---------------- minute (0 - 59)# |  .------------- hour (0 - 23)# |  |  .---------- day of month (1 - 31)# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat# |  |  |  |  |# *  *  *  *  * user-name command to be executed  59  23  *  *  * root run-parts /etc/cron.daily

It indicates that all executable files in the/etc/cron. daily directory are executed at every day.

Restart the cron service after the configuration is complete.
/Sbin/service crond start // start the service
/Sbin/service crond stop // close the service
/Sbin/service crond restart // restart the service
/Sbin/service crond reload // reload the configuration

In this way, the system automatically polls every day to generate access. log-n logs.