2026-10-15 21:44:50 -04:00
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#!/usr/bin/env bash
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# 衍水工资系统 —— MySQL 全量备份（⑨ 备份恢复与运维检查）
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#
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# 思路：在跑中的容器内执行 mysqldump，免暴露 3306 端口给宿主机工具，
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# 也避免宿主机装 MySQL 客户端。凭据从 docker/.env 读取（不入脚本、不入版本库）。
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#
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# 用法：在项目根目录执行 bash scripts/backup_full.sh
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# 产物：db/backups/payroll_YYYYMMDD_HHMMSS.sql.gz，保留最近 30 天。
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set -euo pipefail
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ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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cd "$ROOT"
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if [[ -f docker/.env ]]; then
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# shellcheck disable=SC1091
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source docker/.env
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else
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echo "ERROR: docker/.env 不存在（请先创建 docker/.env 并填入 MySQL 凭据）" >&2
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exit 1
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fi
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: "${MYSQL_DATABASE:?docker/.env 缺 MYSQL_DATABASE}"
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: "${MYSQL_ROOT_PASSWORD:?docker/.env 缺 MYSQL_ROOT_PASSWORD}"
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BACKUP_DIR="$ROOT/db/backups"
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mkdir -p "$BACKUP_DIR"
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STAMP="$(date +%Y%m%d_%H%M%S)"
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OUT="$BACKUP_DIR/payroll_${STAMP}.sql.gz"
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# 容器名固定（compose 显式 container_name），与 docker/docker-compose.dev.yml 保持一致
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CONTAINER="ys-mysql-dev"
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if ! docker inspect "$CONTAINER" >/dev/null 2>&1; then
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echo "ERROR: 容器 $CONTAINER 未运行（先 docker compose up -d）" >&2
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exit 1
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fi
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echo "开始备份 $MYSQL_DATABASE → $(basename "$OUT")"
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docker exec "$CONTAINER" sh -c \
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"mysqldump -uroot -p\"\$MYSQL_ROOT_PASSWORD\" --single-transaction --routines --triggers \"$MYSQL_DATABASE\"" \
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| gzip > "$OUT"
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if [[ ! -s "$OUT" ]]; then
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echo "ERROR: 备份文件为空（数据库名或凭据可能不对）" >&2
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rm -f "$OUT"
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exit 1
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fi
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SIZE="$(du -h "$OUT" | cut -f1)"
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echo "备份完成：$(basename "$OUT") ($SIZE)"
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2026-10-18 23:22:39 -04:00
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# 记录 binlog 位点：增量备份（backup_incremental.sh）与恢复重放的对齐锚点——
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# 从「此位点之后」的 binlog 开始重放即为完整增量链
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docker exec "$CONTAINER" sh -c \
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'mysql -uroot -p"$MYSQL_ROOT_PASSWORD" -N -e "SHOW MASTER STATUS"' > "${OUT}.pos" 2>/dev/null
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if [[ -s "${OUT}.pos" ]]; then
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echo "binlog 位点：$(awk '{print $1, "pos="$2}' "${OUT}.pos") → $(basename "$OUT").pos"
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fi
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2026-10-15 21:44:50 -04:00
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# 保留 30 天
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find "$BACKUP_DIR" -maxdepth 1 -name 'payroll_*.sql.gz' -mtime +30 -print -delete
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2026-10-18 23:22:39 -04:00
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find "$BACKUP_DIR" -maxdepth 1 -name 'payroll_*.pos' -mtime +30 -print -delete
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2026-10-15 21:44:50 -04:00
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echo "已清理 30 天前的旧备份"
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echo ""
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echo "最新备份："
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ls -lh "$BACKUP_DIR"/*.sql.gz 2>/dev/null | tail -3
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