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--- home_server:home_server_setup:other_services:logrotate [2022-09-05 Mon wk36 15:39] – created baumkp
+++ home_server:home_server_setup:other_services:logrotate [2023-04-30 Sun wk17 17:43] – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+{{tag>linux debian log rotate logrotate cron crontab}}
+======logrotate======
+There are a number of ways to rotate logs.
+  -Using a script and cron (or systemd.timer)
+  -Using ''logrotate''
+====Logrotate using script====
+edit the sudo crontab ''sudo crontab -e'':
+<code>
+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,sun
+# |  |  |  |  |
+# *  *  *  *  *   user-name command to be executed
+# 0  0  1  *  * /home/shared/Myscripts/rotatelog.sh /var/log/UPS/UPSLog.Log #Rotate NUT UPS log file
+</code>
+where ''/home/shared/Myscripts/rotatelog.sh'' is:
+<code>#!/bin/bash
+logfile=$1
+if [ ! -f $logfile ]; then
+  echo "log file not found $logfile"
+  exit 1
+fi
+timestamp=`date +%Y%m%d`
+newlogfile=$logfile.$timestamp
+cp $logfile $newlogfile
+cat /dev/null > $logfile
+gzip -f -9 $newlogfile
+</code>
+Remember to make executable (''sudo chmod +x /home/shared/Myscripts/rotatelog.sh'')
+====logrotate====
+  -Install logrotate
+    - debian: ''sudo apt install logrotate''
+    - Arch: ''sudo pacman -S logrotate''
+  *The main logrotate configuration file is here: ''/etc/logrotate.conf''
+  *
+====Links====
+[[https://www.linuxshelltips.com/rotate-logs-with-logrotate-linux/|How to Rotate Logs With Logrotate in Linux]]
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