MySQL多实例配置方案

以/data/为mysql的多实例目录
mkdir -p /data/{3306,3307}/data
tree /data
/data 总的多实例根目录
├── 3306 3306实例的目录
│ └── data 3306实例的数据目录
└── 3307 3307实例的目录
└── data 3307实例的数据目录

配置多实例配置文件
多实例配置文件中server-id不能相同

3306配置文件
vim /data/3306/my.cnf

[client]
port            = 3306
socket          = /data/3306/mysql.sock

[mysql]
no-auto-rehash

[mysqld]
user    = mysql
port    = 3306
socket  = /data/3306/mysql.sock
basedir = /application/mysql
datadir = /data/3306/data
open_files_limit    = 1024
back_log = 600
max_connections = 800
max_connect_errors = 3000
table_cache = 614
external-locking = FALSE
max_allowed_packet =8M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size = 100
thread_concurrency = 2
query_cache_size = 2M
query_cache_limit = 1M
query_cache_min_res_unit = 2k
#default_table_type = InnoDB
thread_stack = 192K
#transaction_isolation = READ-COMMITTED
tmp_table_size = 2M
max_heap_table_size = 2M
long_query_time = 1
#log_long_format
#log-error = /data/3306/error.log
#log-slow-queries = /data/3306/slow.log
pid-file = /data/3306/mysql.pid
log-bin = /data/3306/mysql-bin
relay-log = /data/3306/relay-bin
relay-log-info-file = /data/3306/relay-log.info
binlog_cache_size = 1M
max_binlog_cache_size = 1M
max_binlog_size = 2M
expire_logs_days = 7
key_buffer_size = 16M
read_buffer_size = 1M
read_rnd_buffer_size = 1M
bulk_insert_buffer_size = 1M
#myisam_sort_buffer_size = 1M
#myisam_max_sort_file_size = 10G
#myisam_max_extra_sort_file_size = 10G
#myisam_repair_threads = 1
#myisam_recover

lower_case_table_names = 1
skip-name-resolve
slave-skip-errors = 1032,1062,1007
replicate-ignore-db=mysql

server-id = 1

innodb_additional_mem_pool_size = 4M
innodb_buffer_pool_size = 1G
innodb_data_file_path = ibdata1:128M:autoextend
innodb_file_io_threads = 4
innodb_thread_concurrency = 8
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 4M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_file_per_table = 0
innodb_open_files = 500
[mysqldump]
quick
max_allowed_packet = 2M

[mysqld_safe]
log-error=/data/3306/mysql_3306.err
pid-file=/data/3306/mysqld.pid

编辑MySQL启动文件
vim /data/3306/mysql

#!/bin/sh
#init
port=3306
mysql_user="root"
mysql_pwd="oldboy"
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock"
#startup function
function_start_mysql()
{
    if [ ! -e "$mysql_sock" ];then
      printf "Starting MySQL...\n"
      /bin/sh ${CmdPath}/mysqld_safe --defaults-file=/data/${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}/mysql.sock shutdown
   fi
}

#restart function
function_restart_mysql()
{
    printf "Restarting MySQL...\n"
    function_stop_mysql
    sleep 2
    function_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

多实例目录下的文件
tree /data/
/data/
├── 3306
│ ├── data
│ ├── my.cnf
│ └── mysql
└── 3307
├── data
├── my.cnf
└── mysql

授权mysql用户管理/data目录
chown -R mysql.mysql /data

给启动文件添加执行权限
find /data/ -type f -name “mysql”|xargs chmod 700
find /data/ -type f -name “mysql”|xargs chown root.root
find /data/ -type f -name “mysql”|xargs ls -l
-rwx------. 1 root root 1015 8月 22 14:18 /data/3306/mysql
-rwx------. 1 root root 1015 8月 22 14:56 /data/3307/mysql

初始化MySQL多实例的数据库文件
cd /application/mysql/scripts/
./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3306/data --user=mysql
./mysql_install_db --basedir=/application/mysql/ --datadir=/data/3307/data --user=mysql
初始化后可以tree一下data目录，会新增许多基础文件
tree /data

启动数据库
/data/3306/mysql start
/data/3307/mysql start
或
mysqld_safe --default-file=/data/3306/my.cnf
mysqld_safe --default-file=/data/3307/my.cnf
netstat -lanptu|grep 330
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 51228/mysqld
tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 51947/mysqld

多实例登录
mysql -S /data/3306/mysql.sock
mysql -S /data/3307/mysql.sock

为多实例root设置密码
mysqladmin -u root -S /data/3306/mysql.sock password ‘111111’
mysqladmin -u root -S /data/3307/mysql.sock password ‘222222’

设置密码后登录
mysql -S /data/3306/mysql.sock -uroot -p111111
远程登录
mysql -uroot -poldboy -h 10.125.192.50 -P3307

关闭指定端口mysql
mysqladmin -uroot -p111111 -S /data/3306/mysql.sock shutdown
或
/data/3307/mysql stop

MySQL多实例配置方案

猜你喜欢