脚本用途：
1、mysql主从搭建，从库用户权限的复制（可直接在主库执行脚本，将输出结果在从库执行）
2、实现 pt-show-grants【打印权限信息】（线上可选择不用安装pt软件..通过脚本实现pt-show-grants功能）
3、用户权限统计
脚本：
hostname=192.168.1.12
username=lottery
password=lottery
touch CREATE_user.txt
for port in `ps -ef | grep mysql| grep socket| grep datadir| awk -F= '{print $NF}'`
do
sock=`ps -ef | grep mysql| grep socket| grep datadir|awk -F".pid" '{print $NF}'| grep $port`
echo "-------"$port"-create_user.sql:-------" >>CREATE_user.txt
echo "select concat('show grants for ''',user,'''@''',host, ''';') from mysql.user where user <>'root' and user <>'' " | \
mysql --host=$hostname --user=$username --password=$password $sock -N | \
mysql --host=$hostname --user=$username --password=$password $sock -N | \
sed "s/$/;/" >>CREATE_user.txt
done
cat CREATE_user.txt
rm -rf CREATE_user.txt
username=lottery
password=lottery
touch CREATE_user.txt
for port in `ps -ef | grep mysql| grep socket| grep datadir| awk -F= '{print $NF}'`
do
sock=`ps -ef | grep mysql| grep socket| grep datadir|awk -F".pid" '{print $NF}'| grep $port`
echo "-------"$port"-create_user.sql:-------" >>CREATE_user.txt
echo "select concat('show grants for ''',user,'''@''',host, ''';') from mysql.user where user <>'root' and user <>'' " | \
mysql --host=$hostname --user=$username --password=$password $sock -N | \
mysql --host=$hostname --user=$username --password=$password $sock -N | \
sed "s/$/;/" >>CREATE_user.txt
done
cat CREATE_user.txt
rm -rf CREATE_user.txt
脚本打印信息如下：
-------3306-create_user.sql:-------
GRANT ALL PRIVILEGES ON *.* TO 'lottery'@'192.168.%' IDENTIFIED BY PASSWORD '*6E9EF176ABE11111146AF84111111171111111';
-------3306-create_user.sql:-------
GRANT ALL PRIVILEGES ON *.* TO 'lottery'@'192.168.%' IDENTIFIED BY PASSWORD '*6E9EF176ABE11111146AF84111111171111111';
GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'repl'@'192.168.1.%' IDENTIFIED BY PASSWORD '*AC111111FDDC8943AB31CBD111111E79F7953EA';
GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'repl'@'192.168.2%' IDENTIFIED BY PASSWORD '*AC2111111FDDC8943A11111147D758E79F7953EA';
GRANT USAGE ON *.* TO 'zabbix'@'localhost' IDENTIFIED BY PASSWORD '*6BB4837EB74329101111118DDA7DC61111112AD9';
-------3308-create_user.sql:-------
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%' IDENTIFIED BY PASSWORD '*AC241830FFDDC11111131CBD47D758E79111111A';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%' IDENTIFIED BY PASSWORD '*AC241830FFDDC11111131CBD47D758E79111111A';
GRANT ALL PRIVILEGES ON *.* TO 'lottery'@'192.168.%' IDENTIFIED BY PASSWORD '*6E9EF111111590A33746AF84DB6348D171111111';
GRANT SELECT, INSERT, UPDATE, DELETE ON *.* TO 'mycat'@'192.168.1.%' IDENTIFIED BY PASSWORD '*6EA111111950B4A6BFC111111925FD11111147A42';
GRANT SELECT, INSERT, UPDATE, DELETE ON *.* TO 'mycat_user'@'192.168.1%' IDENTIFIED BY PASSWORD '*6EAF111111B4A6BFC92BA04111111086111111112';
GRANT SHUTDOWN ON *.* TO 'admin'@'localhost' IDENTIFIED BY PASSWORD '*4E74B1831111113952F4C163CB961DFBC5111111';
[root@MIU-MYSQL-002 ~]#
pt-show-grants 打印权限介绍
l 功能介绍：
规范化和打印 mysql权限，让你在复制、比较 mysql权限以及进行版本控制的时候更有效率！
l 用法介绍：
pt-show-grants [OPTION...] [DSN] 选项自行用help 查看，DSN 选项也请查看help，选项区分大小写。
l 使用示例：
查看指定mysql的所有用户权限： pt-show-grants --host='localhost' --user='root' --password='zhang@123'
查看执行数据库的权限： pt-show-grants --host='localhost' --user='root' --password='zhang@123' --database='hostsops'
查看每个用户权限生成 revoke收回权限的语句： pt-show-grants --host='localhost' --user='root' --password='zhang@123' --revoke