89 lines
3.0 KiB
Bash
89 lines
3.0 KiB
Bash
#!/usr/bin/env bash
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# =====================================================================
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# WebGIS Database Backup Script
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# Location: /opt/webgis-lohne/scripts/backup.sh (on server)
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# Purpose: Creates compressed pg_dump backups with daily/weekly/monthly
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# rotation. Intended to be run via cron.
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# =====================================================================
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set -euo pipefail
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# ---------------------------------------------------------------------
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# Configuration
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# ---------------------------------------------------------------------
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DB_HOST="localhost"
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DB_PORT="5432"
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DB_NAME="webgis-db"
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DB_USER="webgis-db-admin"
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BACKUP_ROOT="/var/backups/webgis"
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BACKUP_DIR_DAILY="${BACKUP_ROOT}/daily"
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BACKUP_DIR_WEEKLY="${BACKUP_ROOT}/weekly"
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BACKUP_DIR_MONTHLY="${BACKUP_ROOT}/monthly"
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# Retention Periods (in days)
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KEEP_DAILY=7
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KEEP_WEEKLY=28
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KEEP_MONTHLY=365
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# Password is read from a protected file (see setup instructions).
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# pg_dump honors the PGPASSFILE environment variable.
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export PGPASSFILE="/root/.pgpass_webgis"
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# ---------------------------------------------------------------------
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# Preparation
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# ---------------------------------------------------------------------
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TIMESTAMP=$(date +"%Y-%m-%d_%H-%M-%S")
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DAY_OF_WEEK=$(date +"%u") # 1=Monday ... 7=Sunday
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DAY_OF_MONTH=$(date +"%d")
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mkdir -p "${BACKUP_DIR_DAILY}" "${BACKUP_DIR_WEEKLY}" "${BACKUP_DIR_MONTHLY}"
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# ---------------------------------------------------------------------
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# Create Daily Backup (Custom-Format, compressed)
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# ---------------------------------------------------------------------
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DAILY_FILE="${BACKUP_DIR_DAILY}/webgis_${TIMESTAMP}.dump"
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echo "[$(date)] Starting daily backup -> ${DAILY_FILE}"
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pg_dump \
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--host="${DB_HOST}" \
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--port="${DB_PORT}" \
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--username="${DB_USER}" \
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--format=custom \
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--compress=9 \
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--file="${DAILY_FILE}" \
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"${DB_NAME}"
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echo "[$(date)] Daily backup complete."
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# ---------------------------------------------------------------------
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# Promote to Weekly Backup on Sundays
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# ---------------------------------------------------------------------
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if [[ "${DAY_OF_WEEK}" == "7" ]]; then
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cp "${DAILY_FILE}" "${BACKUP_DIR_WEEKLY}/webgis_${TIMESTAMP}.dump"
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echo "[$(date)] Promoted to weekly backup."
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fi
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# ---------------------------------------------------------------------
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# Promote to Monthly Backup on the First of the Month
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# ---------------------------------------------------------------------
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if [[ "${DAY_OF_MONTH}" == "01" ]]; then
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cp "${DAILY_FILE}" "${BACKUP_DIR_MONTHLY}/webgis_${TIMESTAMP}.dump"
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echo "[$(date)] Promoted to monthly backup."
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fi
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# ---------------------------------------------------------------------
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# Rotation: Delete Backups Older than Retention Period
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# ---------------------------------------------------------------------
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find "${BACKUP_DIR_DAILY}" -name "*.dump" -mtime +${KEEP_DAILY} -delete
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find "${BACKUP_DIR_WEEKLY}" -name "*.dump" -mtime +${KEEP_WEEKLY} -delete
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find "${BACKUP_DIR_MONTHLY}" -name "*.dump" -mtime +${KEEP_MONTHLY} -delete
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echo "[$(date)] Backup rotation complete." |