LXC/Logrotate

LXC » Logrotate » Alpine

lxc image ls images:alpine/3.21
lxc rm -f    logrotate 2>/dev/null
lxc launch   images:alpine/3.21 logrotate

lxc delete   logrotate/alpine:3.21 2>/dev/null
lxc snapshot logrotate alpine:3.21
lxc export   logrotate logrotate_alpine-20250523.tar.gz --optimized-storage

lxc rm -f    logrotate 2>/dev/null
lxc import   logrotate logrotate_alpine-20250523.tar.gz logrotate
lxc start    logrotate

lxc restore  logrotate alpine:3.21
lxc info     logrotate

LXC » Logrotate » Ubuntu

lxc image ls ubuntu:24.04
lxc rm -f    logrotate 2>/dev/null
lxc launch   ubuntu:24.04 logrotate

lxc delete   logrotate/ubuntu:24.04 2>/dev/null
lxc snapshot logrotate ubuntu:24.04
lxc export   logrotate logrotate_ubuntu-20250604.tar.gz --optimized-storage

lxc rm -f    logrotate 2>/dev/null
lxc import   logrotate_ubuntu-20250604.tar.gz logrotate
lxc start    logrotate

lxc restore  logrotate ubuntu:24.04
lxc info     logrotate

---

cat <<'EXE'| lxc exec logrotate -- bash
echo;apt-get update;echo
apt-get install -y logrotate faketime;echo;apt-get clean
EXE

lxc delete   logrotate/faketime:0.9.10 2>/dev/null
lxc snapshot logrotate faketime:0.9.10
lxc export   logrotate logrotate_faketime-20250604.tar.gz --optimized-storage

lxc rm -f    logrotate 2>/dev/null
lxc import   logrotate_faketime-20250604.tar.gz logrotate
lxc start    logrotate

lxc restore  logrotate faketime:0.9.10
lxc info     logrotate

LXC » Logrotate » Ubuntu » Config

lxc restore logrotate faketime:0.9.10 cat <<'EXE'| lxc exec logrotate -- bash mkdir -p /var/log/academia chown root:root /var/log/academia chmod 755 /var/log/academia cat <<'CFG'| tee /etc/logrotate.d/academia >/dev/null /var/log/academia/academia.log { daily dateext dateformat -%Y-%m-%d rotate 90 missingok notifempty compress delaycompress copytruncate } CFG EXE	lxc restore logrotate faketime:0.9.10 cat <<'EXE'| lxc exec logrotate -- bash mkdir -p /var/log/academia chown root:root /var/log/academia chmod 755 /var/log/academia cat <<'CFG'| tee /etc/logrotate.d/academia >/dev/null /var/log/academia/academia.log { daily dateext dateformat -%Y-%m-%d rotate 90 missingok notifempty compress copytruncate } CFG EXE
lxc restore logrotate faketime:0.9.10 cat <<'EXE'| lxc exec logrotate -- bash mkdir -p /var/log/academia chown root:root /var/log/academia chmod 755 /var/log/academia cat <<'CFG'| tee /etc/logrotate.d/academia >/dev/null /var/log/academia/academia.log { daily dateext dateformat -%Y-%m-%d rotate 90 missingok notifempty nocompress copytruncate postrotate LOG_DIR=/var/log/academia ARC_MOS="$(date +'%Y/%Y-%m')" ARC_DIR="${LOG_DIR}/${ARC_MOS}" mkdir -p ${ARC_DIR} for LOG in ${LOG_DIR}/academia.log-*;do [ -e "${LOG}" ] || continue gzip ${LOG};mv ${LOG}.gz ${ARC_DIR}/ done find ${LOG_DIR} -type f -name '*.gz' -mtime +90 -delete find ${LOG_DIR} -type d -empty -mtime +90 -delete endscript } CFG EXE

LXC » Logrotate » Ubuntu » Rotate

cat <<'EXE'| lxc exec logrotate -- bash
for DAYS_AGO in {0..90};do
cat << LOG | tee -a /var/log/academia/academia.log >/dev/null
$(date --utc +'%Y-%m-%dT%H:%M:%S.%6N%:z') academia user: admin signed up
$(date --utc +'%Y-%m-%dT%H:%M:%S.%6N%:z') academia user: admin, page: /home
$(date --utc +'%Y-%m-%dT%H:%M:%S.%6N%:z') academia user: admin, page: /setting
$(date --utc +'%Y-%m-%dT%H:%M:%S.%6N%:z') academia user: admin, page: /sales/report
$(date --utc +'%Y-%m-%dT%H:%M:%S.%6N%:z') academia user: admin, page: /payment/maybank2u
LOG

if [ "${DAYS_AGO}" != "0" ];then
  faketime "$(date -d "${DAYS_AGO} days ago" +%Y-%m-%d)" logrotate -f /etc/logrotate.d/academia
fi
done

ls -ahl /var/log/academia/
EXE

Playground

INET_PATH='.[].state.network.[].addresses[]|select(.family=="inet" and .scope=="global").address' INET_ADDR=$(lxc list name=logrotate -f=yaml|yq -r "${INET_PATH}")		apk cache clean rm -vrf /var/cache/apk/*
echo "$(date +'D%Y%m%d-T%H%M')-Z$(date +'%z'|tr '+-' 'PM')" echo "$(date --utc +'%Y-%m-%dT%H:%M:%S.%6N%:z')"	echo "$(TZ=BDT-6 date +'%Y-%m-%dT%H:%M:%S.%6N%:z')" echo "$(TZ=MYT-8 date +'%Y-%m-%dT%H:%M:%S.%6N%:z')"	echo "$(TZ=GMT-8 date +'%Y-%m-%dT%H:%M:%S.%6N%:z')" echo "$(TZ=GMT-6 date +'%Y-%m-%dT%H:%M:%S.%6N%:z')"
echo "$(TZ=UTC-8 date +'%Y-%m-%dT%H:%M:%S.%6N%:z')" echo "$(TZ=UTC-6 date +'%Y-%m-%dT%H:%M:%S.%6N%:z')"	echo "$(TZ=UTC-8 date +'%Y-%m-%dT%H:%M:%S.%6N %Z%:z')" echo "$(TZ=UTC-6 date +'%Y-%m-%dT%H:%M:%S.%6N %Z%:z')"	echo "$(TZ=UTC-8 date +'%Y-%m-%dT%H:%M:%S.%6N %Z%z')" echo "$(TZ=UTC-6 date +'%Y-%m-%dT%H:%M:%S.%6N %Z%z')"
faketime 'today' logrotate -f /etc/logrotate.d/academia faketime 'yesterday' logrotate -f /etc/logrotate.d/academia faketime '2025-06-01' logrotate -f /etc/logrotate.d/academia	find /var/log/academia/ -mindepth 3 -maxdepth 3 -type f -name '*.gz' -mtime +50 -print find /var/log/academia/ -mindepth 2 -maxdepth 2 -type d -empty -print find /var/log/academia/ -mindepth 1 -maxdepth 1 -type d -empty -print
find /var/log/academia/ -type d -print find /var/log/academia/ -type f -print

References

Logrotate » Advanced date in daily rotations Logrotate » File Name With Date Logrotate » Redhat
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