二进制安装：
[root@lufengcentos ~]# mkdir /home/lufeng/tools -p
[root@lufengcentos ~]# cd /home/lufeng/tools
[root@lufengcentos tools]# rz
[root@lufengcentos tools]# tar xf mysql-5.5.49-linux2.6-x86_64.tar.gz
[root@lufengcentos tools]# mkdir -p /application/mysql-5.5.49
[root@lufengcentos tools]# mv mysql-5.5.49-linux2.6-x86_64 /application/mysql-5.5.49创建mysql用户|组
[root@lufengcentos tools]# groupadd mysql
[root@lufengcentos tools]# useradd mysql -g mysql -s /sbin/nologin -M
[root@lufengcentos tools]# ln -s /application/mysql-5.5.49/ /application/mysqlroot@lufengcentos mysql]# sed -i 's#/usr/local/mysql#/application/mysql#g' /application/mysql/bin/mysqld_safe创建多实例数据文件目录
[root@Mysql-server_2 ~]# mkdir -p /data/{3306,3307}/data
配置相应的配置文件：
[root@Mysql-server_2 ~]# cat /data/3306/my.cnf
####################################################
[client]
#password       = your_password
port            = 3306
socket          = /data/3306/mysql.sock[mysqld]
user            = mysql
port            = 3306
socket          = /data/3306/mysql.sock
basedir         = /application/mysql
datadir         = /data/3306/data
pid-file        = /data/3306/mysql.pid
relay-log       = /data/3306/relay-bin
relay-log-info-file = /data/3306/relay-log.info
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128Kserver-id       = 1[mysqldump]
quick
max_allowed_packet = 2M[mysql]
no-auto-rehash[mysql_safe]
log-error=/data/3306/mysql_lufeng3306.err
pid-file=/data/3306/mysqlf.pid##############################################[root@Mysql-server_2 ~]# cat /data/3307/my.cnf
#############################################
[client]
#password       = your_password
port            = 3307
socket          = /data/3307/mysql.sock[mysqld]
user            = mysql
port            = 3307
socket          = /data/3307/mysql.sock
basedir         = /application/mysql
datadir         = /data/3307/data
pid-file        = /data/3307/mysql.pid
relay-log       = /data/3307/relay-bin
relay-log-info-file = /data/3307/relay-log.info
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128Kserver-id       = 2[mysqldump]
quick
max_allowed_packet = 2M[mysql]
no-auto-rehash[mysql_safe]
log-error=/data/3307/mysql_lufeng3307.err
pid-file=/data/3307/mysqlf.pid
##############################################创建启动文件[root@Mysql-server_2 ~]# cat /data/3306/mysql
#!/bin/sh
################################
#mysql 3306 by lufeng @2017.4.3
################################
#int
port=3306
mysql_user="root"
mysql_pwd="199429"
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock"
#startup function
function_start_mysql(){if [ ! -e "$mysql_sock" ];thenprintf "Starting MySQL...\n"/bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 >/dev/null  &elseprintf "MySQL is running...\n"exitfi
}#stop function
function_stop_mysql(){if [ ! -e "$mysql_sock" ];thenprintf "MySQL is stopped...\n"exitelseprintf "Stoping MySQL...\n"${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdownfi
}#restart function
function_restart_mysql(){printf "Restarting MySQL...\n"function_stop_mysqlsleep 2function_start_mysql
}case $1 in
start)function_start_mysql
;;
stop)function_stop_mysql
;;
restart)function_restart_mysql
;;
*)printf  "Usage: /data/${port}/mysql {start|stop|restart}\n"
esac
##########################################################
[root@Mysql-server_2 ~]# cat /data/3307/mysql
#!/bin/sh
################################
#mysql 3307 by lufeng @2017.4.3
################################
#int
port=3307
mysql_user="root"
mysql_pwd="199429"
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock"
#startup function
function_start_mysql()
{if [ ! -e "$mysql_sock" ];thenprintf "Starting MySQL...\n"/bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 >/dev/null  &elseprintf "MySQL is running...\n"exitfi
}#stop function
function_stop_mysql()
{if [ ! -e "$mysql_sock" ];thenprintf "MySQL is stopped...\n"exitelseprintf "Stoping MySQL...\n"${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdownfi
}#restart function
function_restart_mysql()
{printf "Restarting MySQL...\n"function_stop_mysqlsleep 2function_start_mysql
}case $1 in
start)function_start_mysql
;;
stop)function_stop_mysql
;;
restart)function_restart_mysql
;;
*)printf "Usage: /data/${port}/mysql {start|stop|restart}\n"
esac
#######################################################配置多实例文件权限
[root@Mysql-server_2 ~]# chown -R mysql.mysql /data
[root@Mysql-server_2 ~]# find /data -name mysql|xargs chmod 700
[root@Mysql-server_2 ~]# find /data -name mysql -exec ls -l {} \;
-rwx------ 1 mysql mysql 999 4月   3 13:33 /data/3306/mysql
-rwx------ 1 mysql mysql 1210 4月   3 13:35 /data/3307/mysql全局变量：
[root@Mysql-server_2 ~]# ls /application/mysql/bin/mysql
/application/mysql/bin/mysql
[root@Mysql-server_2 ~]# echo 'export PATH=/application/mysql/bin:$PATH' >>/etc/profile
[root@Mysql-server_2 ~]# tail -1 /etc/profile
export PATH=/application/mysql/bin:$PATH
[root@Mysql-server_2 ~]# source /etc/profile
[root@Mysql-server_2 ~]# echo $PATH
/application/mysql/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin初始化数据库文件[root@Mysql-server_2 scripts]# cd /application/mysql/scripts/
[root@Mysql-server_2 scripts]# ./mysql_install_db --basedir=/application/mysql --datadir=/data/3306/data --user=mysql
[root@Mysql-server_2 scripts]# ./mysql_install_db --basedir=/application/mysql --datadir=/data/3307/data --user=mysql
Installing MySQL system tables...
170403 13:47:58 [Note] /application/mysql/bin/mysqld (mysqld 5.5.49) starting as process 2971 ...
OK
Filling help tables...
170403 13:47:59 [Note] /application/mysql/bin/mysqld (mysqld 5.5.49) starting as process 2980 ...
OK============成功标志启动命令：
[root@Mysql-server_2 ~]# /data/3306/mysql start
Starting MySQL...[root@Mysql-server_2 ~]# /data/3307/mysql start
Starting MySQL...
[root@Mysql-server_2 ~]# netstat -lntup|grep mysql
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      3638/mysqld
tcp        0      0 0.0.0.0:3307                0.0.0.0:*                   LISTEN      3962/mysqld   配置开机自启动：
[root@Mysql-server_2 ~]# echo "mysql multi instances" >>/etc/rc.local
[root@Mysql-server_2 ~]# echo "/data/3306/mysql start" >>/etc/rc.local
[root@Mysql-server_2 ~]# echo "/data/3307/mysql start" >>/etc/rc.local
[root@Mysql-server_2 ~]# tail -3 /etc/rc.local
mysql multi instances
/data/3306/mysql start
/data/3307/mysql start登录：[root@lufengcentos ~]# mysql -S /data/3306/mysql.sock
安全配置：[root@lufengcentos ~]# mysqladmin -u root -S /data/3307/mysql.sock password '199429'
[root@lufengcentos ~]# mysql -S /data/3306/mysql.sock -uroot -p
Enter password: