What does the logrotate command do?
logrotate is designed to ease administration of systems that generate large numbers of log files. It allows automatic rotation, compression, removal, and mailing of log files. Each log file may be handled daily, weekly, monthly, or when it grows too large.
How do you read logrotate status?
To verify if a particular log is indeed rotating or not and to check the last date and time of its rotation, check the /var/lib/logrotate/status file. This is a neatly formatted file that contains the log file name and the date on which it was last rotated. You’ll find this file as /var/lib/logrotate.
What does Missingok mean in logrotate?
missingok : If the log file is missing, go on to the next one without issuing an error message. noolddir : Logs are rotated in the same directory the log normally resides in (this overrides the olddir option). daily : Log files are rotated every day.
What is logrotate status file?
Logrotate stores information about when it last rotated each log file in the status file.
What is Copytruncate in logrotate?
copytruncate : Truncate the original log file in place after creating a copy, instead of moving the old log file and optionally creating a new one. It can be used when some program cannot be told to close its logfile and thus might continue writing (appending) to the previous log file forever.
How do you call logrotate manually?
d directory. Sometimes it needs to force rotation of some files manually. Below you will find how to debug and force logrotate manually….Force Log Rotation.
| Option | Description |
|---|---|
| -d, –debug | Dry run logrotate . |
| -f, –force | Force logrotate . |
| -v, –verbose | Shows more information. |
How do you run logrotate every hour?
Create main logrotate configuration file that will read configuration files from designated directory. Set proper permissions. Create cron configuration to execute logrotate every hour and read main hourly configuration file. Set proper permissions.
How does logrotate work with scripts?
When logrotate runs the script, it will pass as the first argument the file path for each log file to the scripts. For instance, we can write a script to log the moment each log file rotation takes place using the prerotate and postrotate directives:
What is the difference between prerotate/postrotate and logrotate?
On the other hand, logrotate will run the scripts in prerotate/postrotate for each of the matched file paths. For example, if the pattern matches 3 files, firstaction/lastaction will only run once before and after the 3 files are rotated.
What are the logrotate directives?
The directives are a basic building block of logrotate configuration, and they define different functions. They are then combined to form a configuration file that applies to different log files. Furthermore, each of these directives allows us to configure different aspects of logrotate.
How to pass log file name to postrotate?
It’s my understanding that logrotate will pass the name of the log file to the script in postrotate; you could use the script and the first parameter and the knowledge that logrotate has created rotated files using the -%sdateformat to generate a list of those files: