postgresql定时备份 需求: 每天凌晨4点按日期执行自动备份,生产.dump文件。备份文件保存15天。 #vim /var/lib/pgsql/backup.sh

#!/bin/bash
  cur_time=$(date '+%Y-%m-%d')
  fifteendays_time=$(date -d -15days '+%Y-%m-%d')
  rm -rf /var/lib/pgsql/pgsql-backup.$fifteendays_time.dump  
  echo "Starting Backup PostgreSQL ..."
	/usr/local/postgresql/bin/pg_dumpall -U postgres -p 3433 >  /var/lib/pgsql/"pgsql-backup.$cur_time.dump"
  echo "Finish Backup ..."   

#chmod 755 /var/lib/pgsql/back.up

#su - postgres # crontab -e 00 4 * * * /var/lib/pgsql/backup.sh

还原 #psql -h localhost -p port -U user_name -d datebase_name -t table_name < /var/lib/pgsql/'date'.dump
#指定ip,端口,用户,库,表 恢复。