I use the following scripts for rotation:
------ rotate.sh -------
#!/bin/sh
SQUID_HOME=/opt/squid
SQUID_VERSION=2.5.13
SQUID_LOG_DIR=${SQUID_HOME}/shared/cache/logging
SQUID_LOG_BACKUP=${SQUID_HOME}/shared/logging
SLEEP_PROG=/bin/sleep
DATE_PROG=/bin/date
#Rotate squid logs
${SQUID_HOME}/${SQUID_VERSION}/sbin/squid -k rotate
#Wait 2 minutes, to be certain Squid rotation is finished
${SLEEP_PROG} 120
#cache_access.log.0 is now the most recent logfile. Rename this to
#cache_access-DATE-HOUR.log, and move to the archive directory
LAST_HOUR=`${DATE_PROG} --date "1 hour ago" +%F-%H%M`
LAST_DATE=`${DATE_PROG} --date "1 hour ago" +%F`
mkdir -p ${SQUID_LOG_BACKUP}/old-logs/${LAST_DATE}
mv ${SQUID_LOG_DIR}/access.log.0
${SQUID_LOG_BACKUP}/old-logs/${LAST_DATE}/access-${LAST_HOUR}.log
mv ${SQUID_LOG_DIR}/cache.log.0
${SQUID_LOG_BACKUP}/old-logs/${LAST_DATE}/cache-${LAST_HOUR}.log
------ rotate.sh -------
This is run at 00:00, 08:00 and 18:00.
And at 04:30, there's a script that bzips the logs:
------ bzip.sh ------
#!/bin/sh
SQUID_HOME=/opt/squid
DATE_PROG=/bin/date
BZIP_PROG=/usr/bin/bzip2
SQUID_LOGS=${SQUID_HOME}/shared/logging/old-logs
LAST_DATE=`date --date "1 day ago" +%F`
## bzip2 the logfiles
for f in ${SQUID_LOGS}/${LAST_DATE}/*.log; do
${BZIP_PROG} $f
done
------ bzip.sh ------
Crontab looks like:
0 0,8,20 * * * /opt/squid/support/rotate.sh > /dev/null 2>&1
30 4 * * * /opt/squid/support/bzip-logs.sh > /dev/null 2>&1
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