mysql-5.6.20 some problems with the source code installation

The installation script is as follows

Cmake-dcmake_install_prefix=/usr/local/mysql-dmysql_datadir=/usr/local/mysql/data-dsysconfdir=/etc/mysql- Dmysql_unix_addr=/usr/local/mysql/mysql.sock-ddefault_charset=utf8-ddefault_collation=utf8_general_ci-dextra_ Charsets=all-denabled_local_infile=1 Makemake INSTALLCP./support-files/my-default.cnf/etc/mysql/my.cnfgroupadd mysqluseradd-g MySQL mysql-s/usr/sbin/nologin #不是登陆用户chown-R mysql:mysql/usr/local/mysql

Start

./mysqld--defaults-file=/etc/mysql/my.cnf--user=mysql

Can be normal success

But with

./mysqld_safe--defaults-file=/etc/mysql/my.cnf--user=mysql

will start two MySQL

Root 4933 18865 0 15:01 pts/1 00:00:00/bin/sh./mysqld_safe--defaults-file=/etc/mysql/my.cnf--user=mysqlmysql 5023 4933 7 15:01 pts/1 00:00:00/usr/local/mysql/bin/mysqld--defaults-file=/etc/mysql/my.cnf--basedir=/usr/loc Al/mysql--datadir=/usr/local/mysql/data--plugin-dir=/usr/local/mysql/lib/plugin--user=mysql--log-error=/usr/ Local/mysql/data/localhost.localdomain.err--pid-file=/usr/local/mysql/data/localhost.localdomain.pid

Configuration Mysql.server will also start two MySQL, still do not solve the reason ...

mysql-5.6.20 some problems with the source code installation