mirror of
https://github.com/prodrigestivill/docker-postgres-backup-local.git
synced 2026-05-31 08:37:58 +00:00
Pau RE
104 lines
4.1 KiB
Bash
Executable File
104 lines
4.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeo pipefail
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HOOKS_DIR="/hooks"
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if [ -d "${HOOKS_DIR}" ]; then
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on_error(){
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run-parts -a "error" "${HOOKS_DIR}"
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}
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trap 'on_error' ERR
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fi
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source "$(dirname "$0")/env.sh"
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# Pre-backup hook
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if [ -d "${HOOKS_DIR}" ]; then
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run-parts -a "pre-backup" --exit-on-error "${HOOKS_DIR}"
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fi
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#Initialize dirs
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mkdir -p "${BACKUP_DIR}/last/" "${BACKUP_DIR}/daily/" "${BACKUP_DIR}/weekly/" "${BACKUP_DIR}/monthly/"
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#Loop all databases
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for DB in ${POSTGRES_DBS}; do
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#Initialize filename vers
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LAST_FILENAME="${DB}-`date +%Y%m%d-%H%M%S`${BACKUP_SUFFIX}"
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DAILY_FILENAME="${DB}-`date +%Y%m%d`${BACKUP_SUFFIX}"
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WEEKLY_FILENAME="${DB}-`date +%G%V`${BACKUP_SUFFIX}"
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MONTHY_FILENAME="${DB}-`date +%Y%m`${BACKUP_SUFFIX}"
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FILE="${BACKUP_DIR}/last/${LAST_FILENAME}"
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DFILE="${BACKUP_DIR}/daily/${DAILY_FILENAME}"
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WFILE="${BACKUP_DIR}/weekly/${WEEKLY_FILENAME}"
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MFILE="${BACKUP_DIR}/monthly/${MONTHY_FILENAME}"
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#Create dump
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if [ "${POSTGRES_CLUSTER}" = "TRUE" ]; then
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echo "Creating cluster dump of ${DB} database from ${POSTGRES_HOST}..."
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pg_dumpall -l "${DB}" ${POSTGRES_EXTRA_OPTS} | gzip > "${FILE}"
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else
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echo "Creating dump of ${DB} database from ${POSTGRES_HOST}..."
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pg_dump -d "${DB}" -f "${FILE}" ${POSTGRES_EXTRA_OPTS}
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fi
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#Copy (hardlink) for each entry
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if [ -d "${FILE}" ]; then
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DFILENEW="${DFILE}-new"
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WFILENEW="${WFILE}-new"
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MFILENEW="${MFILE}-new"
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rm -rf "${DFILENEW}" "${WFILENEW}" "${MFILENEW}"
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mkdir "${DFILENEW}" "${WFILENEW}" "${MFILENEW}"
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(
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# Allow to hardlink more files than max arg list length
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# first CHDIR to avoid possible space problems with BACKUP_DIR
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cd "${FILE}"
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for F in *; do
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ln -f "$F" "${DFILENEW}/"
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ln -f "$F" "${WFILENEW}/"
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ln -f "$F" "${MFILENEW}/"
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done
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)
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rm -rf "${DFILE}" "${WFILE}" "${MFILE}"
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echo "Replacing daily backup ${DFILE} folder this last backup..."
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mv "${DFILENEW}" "${DFILE}"
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echo "Replacing weekly backup ${WFILE} folder this last backup..."
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mv "${WFILENEW}" "${WFILE}"
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echo "Replacing monthly backup ${MFILE} folder this last backup..."
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mv "${MFILENEW}" "${MFILE}"
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else
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echo "Replacing daily backup ${DFILE} file this last backup..."
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ln -vf "${FILE}" "${DFILE}"
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echo "Replacing weekly backup ${WFILE} file this last backup..."
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ln -vf "${FILE}" "${WFILE}"
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echo "Replacing monthly backup ${MFILE} file this last backup..."
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ln -vf "${FILE}" "${MFILE}"
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fi
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# Update latest symlinks
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LATEST_LN_ARG=""
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if [ "${BACKUP_LATEST_TYPE}" = "symlink" ]; then
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LATEST_LN_ARG="-s"
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fi
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if [ "${BACKUP_LATEST_TYPE}" = "symlink" -o "${BACKUP_LATEST_TYPE}" = "hardlink" ]; then
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echo "Point last backup file to this last backup..."
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ln "${LATEST_LN_ARG}" -vf "${LAST_FILENAME}" "${BACKUP_DIR}/last/${DB}-latest${BACKUP_SUFFIX}"
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echo "Point latest daily backup to this last backup..."
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ln "${LATEST_LN_ARG}" -vf "${DAILY_FILENAME}" "${BACKUP_DIR}/daily/${DB}-latest${BACKUP_SUFFIX}"
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echo "Point latest weekly backup to this last backup..."
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ln "${LATEST_LN_ARG}" -vf "${WEEKLY_FILENAME}" "${BACKUP_DIR}/weekly/${DB}-latest${BACKUP_SUFFIX}"
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echo "Point latest monthly backup to this last backup..."
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ln "${LATEST_LN_ARG}" -vf "${MONTHY_FILENAME}" "${BACKUP_DIR}/monthly/${DB}-latest${BACKUP_SUFFIX}"
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else # [ "${BACKUP_LATEST_TYPE}" = "none" ]
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echo "Not updating lastest backup."
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fi
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#Clean old files
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echo "Cleaning older files for ${DB} database from ${POSTGRES_HOST}..."
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find "${BACKUP_DIR}/last" -maxdepth 1 -mmin "+${KEEP_MINS}" -name "${DB}-*${BACKUP_SUFFIX}" -exec rm -rvf '{}' ';'
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find "${BACKUP_DIR}/daily" -maxdepth 1 -mtime "+${KEEP_DAYS}" -name "${DB}-*${BACKUP_SUFFIX}" -exec rm -rvf '{}' ';'
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find "${BACKUP_DIR}/weekly" -maxdepth 1 -mtime "+${KEEP_WEEKS}" -name "${DB}-*${BACKUP_SUFFIX}" -exec rm -rvf '{}' ';'
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find "${BACKUP_DIR}/monthly" -maxdepth 1 -mtime "+${KEEP_MONTHS}" -name "${DB}-*${BACKUP_SUFFIX}" -exec rm -rvf '{}' ';'
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done
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echo "SQL backup created successfully"
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# Post-backup hook
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if [ -d "${HOOKS_DIR}" ]; then
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run-parts -a "post-backup" --reverse --exit-on-error "${HOOKS_DIR}"
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fi
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