mysqld_multi管理多实例备忘

mysqld_multi管理多实例

环境：

centos6.3 x86

kernel：2.6.32-279.el6.x86_64

mysql version：mysql-5.1.61

mysql与mysql2分别挂载两个不同的磁盘

通过socket进行管理每个实例

mysql -uuser -ppassword -S socketpath

启动实例2

mysqld_multi start 2

<注意：每个实例都要对[mysqld_multi]标签中的用户有相关的权限问题，否则mysqld服务通过mysqld_multi是无法启动>

下面是my.cnf的配置

MyISAM引擎

[mysqld_multi]

mysqld = /usr/bin/mysqld_safe

mysqladmin = /usr/bin/mysqladmin

user = multi_admin

password = my_password

[mysqld]

datadir = /var/lib/mysql

socket = /var/lib/mysql/mysql.sock

port = 3306

log-error = /var/lib/mysql/mysql-error.log

user = mysql

log-bin = mysql.bin

max-binlog-size = 512M

key_buffer_size = 128M

table_cache = 1024

sort_buffer_size = 16M

read_buffer_size = 16M

net_buffer_length = 512K

join_buffer_size = 3M

query_cache_size = 15M

query_cache_limit = 15M

query_cache_type = 1

server-id = 1

[mysqld2]

socket = /tmp/mysql.sock2

port = 3307

pid-file = /var/lib/mysql2/hostname.pid2

datadir = /var/lib/mysql2

log-error = /var/lib/mysql2/mysql2-error.log

user = mysql

server-id = 2