fc30702846
- 新增 backup.sh: pg_dump + gzip，自动清理过期备份 - production compose 添加 backup 服务: cron 每日 02:00 执行 - 可通过 BACKUP_CRON / BACKUP_KEEP_DAYS 环境变量自定义
44 lines
1.2 KiB
Bash
44 lines
1.2 KiB
Bash
#!/usr/bin/env bash
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# PostgreSQL 自动备份脚本
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# 用法:
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# 手动: ./docker/backup.sh
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# 自动: 由 docker compose backup 服务每日 02:00 执行
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set -euo pipefail
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BACKUP_DIR="${BACKUP_DIR:-/backups}"
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PG_HOST="${PGHOST:-postgres}"
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PG_PORT="${PGPORT:-5432}"
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PG_USER="${PGUSER:-erp}"
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PG_DB="${PGDATABSE:-erp}"
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KEEP_DAYS="${KEEP_DAYS:-7}"
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TIMESTAMP=$(date +%Y%m%d_%H%M%S)
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FILENAME="${PG_DB}_${TIMESTAMP}.sql.gz"
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FILEPATH="${BACKUP_DIR}/${FILENAME}"
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mkdir -p "${BACKUP_DIR}"
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echo "[$(date -Iseconds)] 开始备份 ${PG_DB} → ${FILEPATH}"
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if pg_dump \
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-h "${PG_HOST}" \
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-p "${PG_PORT}" \
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-U "${PG_USER}" \
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-d "${PG_DB}" \
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--format=plain \
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--no-owner \
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--no-privileges \
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| gzip > "${FILEPATH}"; then
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SIZE=$(du -h "${FILEPATH}" | cut -f1)
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echo "[$(date -Iseconds)] 备份完成: ${FILENAME} (${SIZE})"
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else
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echo "[$(date -Iseconds)] 备份失败！" >&2
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rm -f "${FILEPATH}"
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exit 1
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fi
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# 清理过期备份
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DELETED=$(find "${BACKUP_DIR}" -name "${PG_DB}_*.sql.gz" -mtime +${KEEP_DAYS} -delete -print | wc -l)
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if [ "${DELETED}" -gt 0 ]; then
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echo "[$(date -Iseconds)] 已清理 ${DELETED} 个过期备份（>${KEEP_DAYS}天）"
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fi
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