MySQL 之遷移用戶及權限

參考來源：

https://www.cnblogs.com/huangmr0811/p/5570994.html

https://blog.csdn.net/u011665746/article/details/79067656

 

5.6導出執行腳本：

入參：
export_db_ip=$1         #服務器IP
export_db_port=$2       #MySQL端口
export_user=$3          #導出用戶
export_user_passwd=$4   #導出用戶密碼

###傳入導出服務器及用戶信息
export_db_ip=$1
export_db_port=$2
export_user=$3
export_user_passwd=$4

###文件保存目錄
path=`pwd`

###導出用戶
mysql -B -N -h $export_db_ip -P $export_db_port -u${export_user} -p${export_user_passwd} -e "SELECT CONCAT('\'', user,'\'@\'', host, '\'') FROM user WHERE user != 'mysql.session' and user != 'mysql.sys' AND user != 'root' AND user != ''" mysql > $path/mysql_all_users.txt

###導出用戶權限
while read line; 
do 
    mysql -B -N -h $export_db_ip -P $export_db_port -u${export_user} -p${export_user_passwd} -e "SHOW GRANTS FOR $line"; 
done < $path/mysql_all_users.txt > $path/mysql_all_users_sql.sql


###每行行尾增加；
sed -i 's/$/;/' $path/mysql_all_users_sql.sql

###立即生效
echo "flush privileges;" >> $path/mysql_all_users_sql.sql

 

 5.7導出執行腳本：

入參：
export_db_ip=$1         #服務器IP
export_db_port=$2       #MySQL端口
export_user=$3          #導出用戶
export_user_passwd=$4   #導出用戶密碼

#!/bin/bash
#Function export user privileges
#5.7存在問題: show grants for 不會給出密碼信息，必須用 show create user
# https://dev.mysql.com/doc/refman/5.7/en/show-grants.html  
# show create user 為5.7版本開始存在，5.6執行報錯。


###傳入導出服務器及用戶信息
export_db_ip=$1
export_db_port=$2
export_user=$3
export_user_passwd=$4

###文件保存目錄
path=`pwd`

source /etc/profile
 
pwd=password 
expgrants()  
{  
  mysql -B -h $export_db_ip -P $export_db_port -u${export_user} -p${export_user_passwd} -N $@ -e "SELECT CONCAT(  'SHOW CREATE USER   ''', user, '''@''', host, ''';' ) AS query FROM mysql.user" | \
  mysql -h $export_db_ip -P $export_db_port -u${export_user} -p${export_user_passwd} -f  $@ | \
  sed 's#$#;#g;s/^\(CREATE USER for .*\)/-- \1 /;/--/{x;p;x;}' 
 
  mysql -B -h $export_db_ip -P $export_db_port -u${export_user} -p${export_user_passwd} -N $@ -e "SELECT CONCAT(  'SHOW GRANTS FOR ''', user, '''@''', host, ''';' ) AS query FROM mysql.user" | \
  mysql -h $export_db_ip -P $export_db_port -u${export_user} -p${export_user_passwd} -f  $@ | \
  sed 's/\(GRANT .*\)/\1;/;s/^\(Grants for .*\)/-- \1 /;/--/{x;p;x;}'   
}  
expgrants > $path/mysql_all_users_sql_5.7.sql


###立即生效
echo "flush privileges;" >> $path/mysql_all_users_sql_5.7.sql

 

導出執行語句：

[root@db02 tmp]# mysql -u root -p < mysql_all_users_sql.sql