I have managed install mysql5.7
but now I got this
mailmng-server failed: Fatal error: plesk::Exc<&plesk::ExecCmd::Failed, plesk::ExDefault>(Execution of /usr/sbin/postconf -d -h mail_version failed with return code 1. Stderr is /usr/sbin/postconf: /lib64/libmysqlclient.so.18: version `libmysqlclient_18' not found (required by /usr/sbin/postconf) )
it seems because missing libmysqlclient.so.18
mysql5.7 comes with libmysqlclient.so.20 , I have try to create soft link from .20 to .18 , no good ...
copy .20 to .18 , no good
installed mysql-libs , no good
installed mysql-devel, no good
search .18 in internet and place in /usr/lib/mysql and /usr/lib64/mysql , no good
ldd /usr/sbin/postconf no longer shows "file no found" , but still doesn't work.
any help would be much appreciated ....