单机服务器已经安装好二进制mysql5.6.20,然后开启mysql多实例

useradd mysql -s /sbin/nologin  -M

mkdir /data/{3307,3308}/{data,log,binlog} -p

cd /data/3307

chown -R mysql.mysql ./{binlog,data,log}

cd /usr/local/mysql/scripts/

注意：初始化mysql时一定要把一开始的/etc/my.cnf文件移走或者是修改名称，然后在初始化多实例mysql。

./mysql_install_db --datadir=/data/3307/data --basedir=/usr/local/mysql --user=mysql --explicit_defaults_for_timestamp

/usr/local/mysql/bin/mysqld_safe --defaults-file=/data/3307/my.cnf &

ps -ef|grep mysql

mysqladmin -uroot password 'Zykj@558fug996' -S /data/3307/log/mysql.sock

mysql的配置文件：

[root@localhost log]# cat /data/3307/my.cnf 

[client]

#password   = your_password

port        = 3307

socket      = /data/3307/log/mysql.sock

[mysqld]

port        = 3307

socket      = /data/3307/log/mysql.sock

datadir = /data/3307/data/

long_query_time = 1

slow_query_log=1

slow-query-log-file = /data/3307/log/mysql-slow.log

log-error = /data/3307/log/error.log

pid-file = /data/3307/log/mysql3307.pid

character_set_server = utf8

skip-external-locking

key_buffer_size = 16M

max_allowed_packet = 1M

table_open_cache = 1024

sort_buffer_size = 4M

net_buffer_length = 8K

read_buffer_size = 4M

read_rnd_buffer_size = 512K

myisam_sort_buffer_size = 64M

thread_cache_size = 128

query_cache_size = 0

tmp_table_size = 128M

secure_file_priv = /tmp

explicit_defaults_for_timestamp = true

#skip-networking

max_connections = 500

max_connect_errors = 100

open_files_limit = 65535

log-bin= /data/3307/binlog/mysql-bin

binlog_format=row

server-id   = 37307

expire_logs_days = 2

log_bin_trust_function_creators=1

default_storage_engine = InnoDB

innodb_data_home_dir = /data/3307/data

innodb_data_file_path = ibdata1:10M:autoextend

innodb_log_group_home_dir = /data/3307/data

innodb_buffer_pool_size = 3072M

innodb_log_file_size = 256M

innodb_log_buffer_size = 8M

innodb_flush_log_at_trx_commit = 1

innodb_lock_wait_timeout = 50

[mysqldump]

quick

max_allowed_packet = 256M

[mysql]

#prompt='\\u@\\h : \\d:\\D>'

no-auto-rehash

#prompt="\\u@\\h [\\d]>"

[myisamchk]

key_buffer_size = 16M

sort_buffer_size = 4M

read_buffer = 2M

write_buffer = 2M

[mysqlhotcopy]

interactive-timeout

开启mysql实例3308

cd /data/3308

chown -R mysql.mysql ./{binlog,data,log}

./mysql_install_db --datadir=/data/3307/data --basedir=/usr/local/mysql --user=mysql --explicit_defaults_for_timestamp

/usr/local/mysql5.6/bin/mysqld_safe --defaults-file=/data/3307/my.cnf &

mysqladmin -uroot password 'Zykj@558fug996' -S /data/3307/log/mysql.sock

单机多实例mysql的启动脚本：

[root@localhost log]# cat /data/3307/mysql.sh 

#!/bin/sh

################################################

################################################

#init

port=3307

mysql_user="root"

mysql_pwd="Zykj@558fug996"

CmdPath="/usr/local/mysql/bin"

mysql_sock="/data/$port/log/mysql.sock"

#startup function

function_start_mysql()

{

    if [ ! -e "$mysql_sock" ];then

      printf "Starting MySQL...\n"

      ${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 > /dev/null &

    else

      printf "MySQL is running...\n"

      exit

    fi

}

#stop function

function_stop_mysql()

{

    if [ ! -e "$mysql_sock" ];then

       printf "MySQL is stopped...\n"

       exit

    else

       printf "Stoping MySQL...\n"

       ${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/log/mysql.sock shutdown & > /dev/null

   fi

}

#restart function

function_restart_mysql()

{

 if [ ! -e "$mysql_sock" ];then

       printf "MySQL is stopped...\n"

    else

       printf "Stoping MySQL...\n"

  ${CmdPath}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S /data/${port}/log/mysql.sock shutdown & > /dev/null

fi

    sleep 1

    function_start_mysql

}

case $1 in

start)

    function_start_mysql

;;

stop)

    function_stop_mysql

;;

restart)

    function_restart_mysql

;;

*)

    printf "Usage: /data/${port}/mysql.sh {start|stop|restart}\n"

esac