mysql_ Backup restore_ Specify table_ Backup table_ Restore table_ innobackup

1 Back up the specified table ：

1.1 Introduce

Backup tables ：zkr.orderinfo

Backup path ：/data/backupDB/baktb/20220428.xbstream

Backup log files ：/data/backupDB/baktb/bakuptb20220428.log

notes ： hold mysql The library is backed up at the same time

1.2 Script ： Compress , Parallel backup scripts

/usr/bin/innobackupex --defaults-file=/etc/my.cnf --user=dbbackup --password=dbbackuppassword --compress --compress-threads=4 --stream=xbstream --parallel=5 -S /mysql/mysql.sock --host=127.0.0.1 --databases="zkr.orderinfo mysql" /data/backupDB/baktb/> /data/backupDB/baktb/20220428.xbstream 2>/data/backupDB/baktb/bakuptb20220428.log

Backup complete

2 Steps to restore the backup table ：

2.1 Create folder ：

mkdir -pv /data/backupDB/baktb/outputdir

2.2 Open compressed file ：

xbstream -x < /data/backupDB/baktb/20220428.xbstream -C /data/backupDB/baktb/outputdir/

2.3 Entry directory ：

cd outputdir

2.4 decompression ：

innobackupex --decompress --parallel=8 --compress-threads=7 ./

2.5 Delete compressed file , If you don't delete , Errors will be reported later  

find ./ -name "*.qp" |xargs rm -rf

2.6 Roll back uncommitted transactions , Execute this sentence first, and then recover the data ：

innobackupex --apply-log /data/backupDB/baktb/outputdir/

2.7 close mysql example ：

service mysql stop

2.8 Back up the tables that need to be restored ：

mv /mysql/zkr/orderinfo.frm /mysql/zkr/orderinfo.frm_bak_20220428
mv /mysql/zkr/orderinfo.ibd /mysql/zkr/orderinfo.ibd_bak_20220428

2.9 Copy the backup file to the database directory

cp /data/backupDB/baktb/outputdir/zkr/orderinfo.*  /mysql/zkr/

2.10 Empowering documents ：

chown -R mysql.mysql /mysql

2.11 Boot instance ：

service mysql start