Hi, Dear Michael
I am Li, thanks for your apply.
I didn’t find any .my.cnf in my Percona basedir, even all of my / dir.
[root@MYSQL_01 mysql]# find / -name ‘.my.cnf’
[root@MYSQL_01 mysql]#
It seams the strace output is null.
[root@MYSQL_01 bin]# pwd
/app/mysql/bin
[root@MYSQL_01 bin]# strace -f -e trace=open mysql 2>&1 | grep -i cnf
[root@MYSQL_01 bin]#