mirror of
https://github.com/prodrigestivill/docker-postgres-backup-local.git
synced 2026-05-31 08:37:58 +00:00
Werner Robitza
83 lines
2.9 KiB
Bash
Executable File
83 lines
2.9 KiB
Bash
Executable File
#! /bin/sh
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set -e
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if [ "${POSTGRES_DB}" = "**None**" -a "${POSTGRES_DB_FILE}" = "**None**" ]; then
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echo "You need to set the POSTGRES_DB or POSTGRES_DB_FILE environment variable."
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exit 1
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fi
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if [ "${POSTGRES_HOST}" = "**None**" ]; then
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if [ -n "${POSTGRES_PORT_5432_TCP_ADDR}" ]; then
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POSTGRES_HOST=${POSTGRES_PORT_5432_TCP_ADDR}
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POSTGRES_PORT=${POSTGRES_PORT_5432_TCP_PORT}
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else
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echo "You need to set the POSTGRES_HOST environment variable."
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exit 1
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fi
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fi
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if [ "${POSTGRES_USER}" = "**None**" -a "${POSTGRES_USER_FILE}" = "**None**" ]; then
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echo "You need to set the POSTGRES_USER or POSTGRES_USER_FILE environment variable."
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exit 1
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fi
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if [ "${POSTGRES_PASSWORD}" = "**None**" -a "${POSTGRES_PASSWORD_FILE}" = "**None**" ]; then
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echo "You need to set the POSTGRES_PASSWORD or POSTGRES_PASSWORD_FILE environment variable or link to a container named POSTGRES."
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exit 1
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fi
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#Process vars
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if [ "${POSTGRES_DB_FILE}" = "**None**" ]; then
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POSTGRES_DBS=$(echo "${POSTGRES_DB}" | tr , " ")
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elif [ -r "${POSTGRES_DB_FILE}" ]; then
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POSTGRES_DBS=$(cat "${POSTGRES_DB_FILE}")
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else
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echo "Missing POSTGRES_DB_FILE file."
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exit 1
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fi
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if [ "${POSTGRES_USER_FILE}" = "**None**" ]; then
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export PGUSER="${POSTGRES_USER}"
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elif [ -r "${POSTGRES_USER_FILE}" ]; then
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export PGUSER=$(cat "${POSTGRES_USER_FILE}")
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else
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echo "Missing POSTGRES_USER_FILE file."
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exit 1
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fi
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if [ "${POSTGRES_PASSWORD_FILE}" = "**None**" ]; then
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export PGPASSWORD="${POSTGRES_PASSWORD}"
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elif [ -r "${POSTGRES_PASSWORD_FILE}" ]; then
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export PGPASSWORD=$(cat "${POSTGRES_PASSWORD_FILE}")
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else
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echo "Missing POSTGRES_PASSWORD_FILE file."
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exit 1
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fi
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POSTGRES_HOST_OPTS="-h ${POSTGRES_HOST} -p ${POSTGRES_PORT} ${POSTGRES_EXTRA_OPTS}"
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KEEP_DAYS=${BACKUP_KEEP_DAYS}
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KEEP_WEEKS=`expr $(((${BACKUP_KEEP_WEEKS} * 7) + 1))`
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KEEP_MONTHS=`expr $(((${BACKUP_KEEP_MONTHS} * 31) + 1))`
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#Initialize dirs
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mkdir -p "${BACKUP_DIR}/daily/" "${BACKUP_DIR}/weekly/" "${BACKUP_DIR}/monthly/"
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#Loop all databases
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for DB in ${POSTGRES_DBS}; do
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#Initialize filename vers
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DFILE="${BACKUP_DIR}/daily/${DB}-`date +%Y%m%d-%H%M%S`.sql.gz"
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WFILE="${BACKUP_DIR}/weekly/${DB}-`date +%G%V`.sql.gz"
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MFILE="${BACKUP_DIR}/monthly/${DB}-`date +%Y%m`.sql.gz"
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#Create dump
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echo "Creating dump of ${DB} database from ${POSTGRES_HOST}..."
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pg_dump -f "${DFILE}" ${POSTGRES_HOST_OPTS} ${DB}
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#Copy (hardlink) for each entry
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ln -vf "${DFILE}" "${WFILE}"
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ln -vf "${DFILE}" "${MFILE}"
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#Clean old files
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echo "Cleaning older than ${KEEP_DAYS} days for ${DB} database from ${POSTGRES_HOST}..."
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find "${BACKUP_DIR}/daily" -maxdepth 1 -mtime +${KEEP_DAYS} -name "${DB}-*.sql*" -exec rm -rf '{}' ';'
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find "${BACKUP_DIR}/weekly" -maxdepth 1 -mtime +${KEEP_WEEKS} -name "${DB}-*.sql*" -exec rm -rf '{}' ';'
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find "${BACKUP_DIR}/monthly" -maxdepth 1 -mtime +${KEEP_MONTHS} -name "${DB}-*.sql*" -exec rm -rf '{}' ';'
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done
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echo "SQL backup created successfully"
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