Linux under Log Management tool--logrotate

Configuration

/usr/local/nginx/logs/*.log {    daily       dateext     rotate 1    olddir  /usr/local/nginx/other/logs    missingok      notifempty     compress     sharedscripts     postrotate        /bin/kill -USR1 $(cat /var/run/nginx.pid 2>/dev/null) 2>/dev/null ||:    endscript    }

• dateext : The file suffix is a date format, that is, after the cut file is: xxx.log-20150529 (. gz), if the comment is dropped, the cut is incremented by the number, that is, the xxx.log-1 (. gz)
• Monthly : The log file will be round by month. Other available values are ' daily ', ' weekly ' or ' yearly '.
• rotate n : Stores n archive logs at a time. For the first N=1 Archive, the oldest archive will be deleted.
• Compress : After a round-robin task is completed, the archived archive will be compressed using gzip . The opposite command is nocompress
• delaycompress : Always with the compress option, The delaycompress option indicates that logrotate does not compress the most recent archive, and compression will take place during the next round-robin cycle.
• Missingok : During the log rotation, any errors will be ignored, such as "files cannot be found".
• notifempty : Round robin does not take place if the log file is empty. The opposite command ifempty is the default
• prerotate/endscript : Commands that need to be executed before dumping can be placed in this pair, these two keywords must be separate rows
• postrotate/endscript : Commands that need to be executed after the dump can be placed in this pair, these two keywords must be taken separately
• sharedscripts : All log files are rotated once the script is completed once again
• olddir dumps the log file into the specified directory and must be in the same file system as the current log file

Operation

The path /etc/logrotate.conf is the default configuration path, and configuration-specific log processing is typically placed /etc/logrotate.d/ next. To logrotate.conf use the include path include corresponding path in

To invoke /etc/lograte.d/ all log calls that are configured under logrotate :

To invoke for a specific configurationlogrotate

The best choice during the troubleshooting process is to use the -d option to run in a preview fashion logrotate . To validate, you can simulate the walkthrough log rotation and display its output without actually tracking any log files.

logrotate -d /etc/logrotate.d/log-file

Even if the round-robin condition is not met, we can -f force the logrotate round log file by using the option, which -v provides verbose output.

logrotate -vf /etc/logrotate.d/log-file

Reference Documentation:

Logrotate Manual
Linux log File Explorer--logrotate
Logrotate Log Management tool

Linux under Log Management tool--logrotate