There are four ways to start mysql:
1、mysqld
Start the mysql server: ./mysqld --defaults-file=/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-file=/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;
启动mysql服务器:./mysqld_multi --defaults-file=/etc/my.cnf start 3306-3307
关闭mysql服务器:mysqladmin shutdown
可参考<<MySql5.1参考手册>>
http://dev.mysql.com/doc/refman/5.1/zh/database-administration.html#server-side-scripts