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38 lines
779 B
Bash
38 lines
779 B
Bash
#!/bin/sh
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# PostgreSQL 自动备份脚本
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set -e
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BACKUP_DIR="/backups"
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DATE=$(date +%Y%m%d_%H%M%S)
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BACKUP_FILE="$BACKUP_DIR/backup_$DATE.sql.gz"
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echo "开始备份 PostgreSQL 数据库：$DATE"
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# 创建备份目录
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mkdir -p $BACKUP_DIR
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# 执行备份
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PGPASSWORD=$POSTGRES_PASSWORD pg_dump \
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-h $POSTGRES_HOST \
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-U $POSTGRES_USER \
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-d $POSTGRES_DB \
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--no-owner \
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--no-acl \
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| gzip > $BACKUP_FILE
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# 检查备份是否成功
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if [ -f "$BACKUP_FILE" ]; then
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BACKUP_SIZE=$(du -h "$BACKUP_FILE" | cut -f1)
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echo "备份完成：$BACKUP_FILE (大小: $BACKUP_SIZE)"
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else
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echo "备份失败！"
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exit 1
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fi
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# 删除 30 天前的备份
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find $BACKUP_DIR -name "backup_*.sql.gz" -mtime +30 -delete
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echo "已清理 30 天前的备份文件"
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echo "备份任务完成"
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