在对mysql进行完整备份时使用--all-database参数
# mysqldump -u root -h localhost -p --all-database > /root/all.sql
数据导入的时候,可以先登陆mysql数据库中,使用source /root/all.sql进行导入。
如果想要在mysqldump备份数据库时过滤掉某些库,这种情况下就不能使用--all-database了,而是使用--database。如下备份数据库时过滤掉information_schema、mysql 、test和hehe_db库
[root@fangfull-backup ~]# mysql -uroot -p -e "show databases" Enter password: +--------------------+ | Database | +--------------------+ | information_schema | | haha_db | | hehe_db | | mysql | | test | | tech_db | | yaya_db | | mimi_db | | lala_db | +--------------------+ 9 rows in set (0.00 sec) [root@fangfull-backup ~]# mysql -uroot -p -e "show databases"|grep -Ev "Database|information_schema|mysql|test|hehe_db" Enter password: haha_db tech_db yaya_db mimi_db lala_db [root@fangfull-backup ~]# mysql -uroot -p -e "show databases"|grep -Ev "Database|information_schema|mysql|test|hehe_db"|xargs Enter password: haha_db tech_db yaya_db mimi_db lala_db [root@fangfull-backup ~]# mysql -uroot -p -e "show databases"|grep -Ev "Database|information_schema|mysql|test|hehe_db"|xargs mysqldump -uroot -p --databases > mysql_dump.sql Enter password:
mysql5.6以上版本在直接使用密码登录mysql的时候,会出现提示信息"Warning: Using a password on the command line interface can be insecure."!
[root@kevin ~]# mysql -pkevin@123 -e "show databases" Warning: Using a password on the command line interface can be insecure. +--------------------+ | Database | +--------------------+ | information_schema | | confluence | | dtin_uat | | dtinlog_uat | | mysql | | nextcloud_db | | performance_schema | | xbtdb | +--------------------+
要想屏蔽掉这个提示信息,方法是:将提示信息重定向到/dev/null,即忽略掉提示信息。
[root@kevin ~]# mysql -pkevin@123 -e "show databases" 2>/dev/null +--------------------+ | Database | +--------------------+ | information_schema | | confluence | | dtin_uat | | dtinlog_uat | | mysql | | nextcloud_db | | performance_schema | | xbtdb | +--------------------+ 过滤掉mysql某些库的操作如下: [root@kevin ~]# mysql -pkevin@123 -e "show databases" 2>/dev/null |grep -Ev "Database|information_schema|mysql" confluence dtin_uat dtinlog_uat nextcloud_db performance_schema xbtdb