База знаний » БД PostgreSQL

h1. Ротация архивов по расписанию

h2. pg_cleanup_backedup_archive.sh

<pre>

<code class="bash">

#!/bin/bash

DAYS_BEFORE_LAST_BACKUP=3

if [ -z "${2}" ]; then

  echo "USEAGE: ${0##*/} /path/to/pg_archive backup-report.file" >&2

  exit 1

fi

PG_ARCHIVE_DIRECTORY="${1}"

BACKUP_REPORT_FILE="${2}"

if [ ! -w "${PG_ARCHIVE_DIRECTORY}" ]; then

  echo "Archive directory '${PG_ARCHIVE_DIRECTORY}' is not writable" >&2

  exit 1

fi

if [ ! -e "${BACKUP_REPORT_FILE}" ]; then

  echo "File '${BACKUP_REPORT_FILE}' not found" >&2

  exit 1

fi

SEARCH_DAYS_AGO=$[($(date +'%s')-$(stat -c '%Y' "${BACKUP_REPORT_FILE}"))/24/3600+${DAYS_BEFORE_LAST_BACKUP}] || exit 1

OLD_BACKUPS=$(find "${PG_ARCHIVE_DIRECTORY}" -type f -name "*.backup" -mtime +"${SEARCH_DAYS_AGO}" -printf '%f\n') || exit 1

if [ -n "${OLD_BACKUPS}" ]; then

  pg_archivecleanup "${PG_ARCHIVE_DIRECTORY}" $(echo "${OLD_BACKUPS}" |sort | tail -n 1) || exit 1

  for NAME in ${OLD_BACKUPS}; do

    rm -f "${PG_ARCHIVE_DIRECTORY}/${NAME}" || exit 1

  done

fi

</code>

</pre>