There are four ways to start Mysql

Without further ado, let's get to the point.

4 startup methods of mysql:

1, mysqld

Start mysql server :./mysqld -- defaults-ES12en =/etc/ my.cnf --user=root

Client connection:

mysql --defaults-file=/etc/my.cnf
or
mysql -S /tmp/mysql.sock

2, mysqld_safe

Start mysql server :./mysqld_safe -- defaults-ES31en =/etc/ my.cnf --user=root &

Client connection:

mysql --defaults-file=/etc/my.cnf
or
mysql -S /tm/mysql.sock

3, mysql server

cp -v /usr/local/mysql/support-files/mysql.server /etc/init.d/
chkconfig --add mysql.server

Start mysql server :service mysql. server {start|stop|restart|reload| force-reload |status}

Client connection: same as 1, 2

4, mysqld_multi

mkdir $MYSQL_BASE/data2
cat <<-EOF>> /etc/my.cnf
[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /user/local/mysql/bin/mysqladmin
user = mysqladmin
password = mysqladmin
[mysqld3306]
port = 3306
socket = /tmp/mysql3306.sock
pid-file = /tmp/mysql3306.pid
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
[mysqld3307]
port = 3307
socket = /tmp/mysql3307.sock
pid-file = /tmp/mysql3307.pid
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data2
EOF
#mysql -S /tmp/mysql3306.sock
mysql>GRANT SHUTDOWN ON *.* TO 'mysqladmin'@'localhost' identified by 'mysqladmin' with grant option;
#mysql -S /tmp/mysql3307.sock
mysql>GRANT SHUTDOWN ON *.* TO 'mysqladmin'@'localhost' identified by 'mysqladmin' with grant option;

Start mysql server :./mysqld_multi -- ES71en-ES72en =/etc/ my. cnf start 3306-3307

Shut down the mysql server :mysqladmin shutdown

Above is this site to introduce 4 Mysql startup ways, I hope to help you!