MySQL data export tool mysqldump

MySQL version information:

[root@db02 data]# mysql --version
mysql  Ver 14.14 Distrib 5.6.36, for Linux (x86_64) using  EditLine wrapper

Options:

-A , --all-databases	Full database backup
-B , --databases	Add statements for creating a library (create) and "use library" Multiple library names can be directly connected, and multiple libraries can be backed up at the same time -B library1 library2
-R , --routines	Back up stored procedure and function data
--triggers	Backup trigger data
--master-data={1|2}	Tell the binlog location at the moment after backup 2 Notes 1 non-comment, to perform (master-slave replication) is not useful for recovery
--single-transaction	Hot standby for the innodb engine
-F, --flush-logs	flush binlog log

 

fully prepared 

[root@db02 ~]# mysqldump -uroot -p123 -A >/backup/full.sql

The difference between using -B for single database backup

[root@db02 ~]# mysqldump -uroot -p123 test > ./test.sql
Warning: Using a password on the command line interface can be insecure.

[root@db02 ~]# mysqldump -uroot -p123 -B test > ./test_B.sql
Warning: Using a password on the command line interface can be insecure.

[root@db02 ~]# vimdiff test.sql test_B.sql 

Multi-database backup -- -B data 1 database 2

[root@db02 ~]# mysqldump -uroot -p123 -B test mysql > ./test_mysql.sql
Warning: Using a password on the command line interface can be insecure.

Multi-table backup -- database name table name 1 table name 2

[root@db02 data]# mysqldump -uroot -p123 mysql user proc > ./mysql_user_proc.sql
Warning: Using a password on the command line interface can be insecure.

--master-data=2

[root@db02 data]# mysqldump -uroot -p123 --master-data=2 test > ./test.sql
Warning: Using a password on the command line interface can be insecure.

[root@db02 data]# vim ./test.sql

-- CHANGE MASTER TO MASTER_LOG_FILE='mysql_bin.000002', MASTER_LOG_POS=262;

--single-transaction

[root@db02 ~]# mysqldump -uroot -p123 --master-data=2 --single-transaction test > ./test2.sql
Warning: Using a password on the command line interface can be insecure.

-F

[root@db02 ~]# mysqldump -uroot -p123 --master-data=2 --single-transaction -R --triggers -B test -F > ./test3.sql
Warning: Using a password on the command line interface can be insecure.

compressed backup

[root@db02 ~]# mysqldump -uroot -p123 --master-data=2 --single-transaction -R --triggers -B test -F | gzip > ./test3.sql.gz
Warning: Using a password on the command line interface can be insecure.

[root@db02 ~]# ll ./test3.sql.gz
-rw-r--r-- 1 root root 818 Apr 11 17:12 ./test3.sql.gz

[root@db02 ~]# file ./test3.sql.gz
./test3.sql.tar.gz: gzip compressed data, from Unix, last modified: Wed Apr 11 17:12:48 2018

decompress

[root@db02 ~]# mysqldump -uroot -p123 --master-data=2 --single-transaction -R --triggers -B test -F | gzip > ./test3.sql.gz
Warning: Using a password on the command line interface can be insecure.

[root@db02 ~]# gunzip test3.sql.gz 
或者
[root@db02 ~]# gzip -d test3.sql.gz
或者
[root@db02 ~]# zcat test3.sql.gz > test3.sql

recover

mysql> set sql_log_bin=0 # Recovery operation, do not write to the binlog log, because writing is also useless

mysql> source /root/test.sql

 

Note: This blog is for reference only!