单机环境下安装多个MySQL服务器


终于完成了单机上多个mysqld配置,我使用的是mysqld_safe命令来完成的。

Step1:

安装数据库:

./configure --prefix=/usr/local/mysql-master

make && make install

./configure --prefix=/usr/local/mysql-slave

make && make install

 

Step2:从源代码文件的support-files文件夹中拷贝两份my_small.cnf文件,放到/etc文件夹下,分别命名为my-master.cnf,my-slave.cnf

Step3:修改这两个配置文件的mysqld部分,例如我的配置文件如下:

my-master.cnf:

 

port = 3306

socket = /tmp/mysql.sock

skip-locking

key_buffer = 16K

max_allowed_packet = 1M

table_cache = 4

sort_buffer_size = 64K

read_buffer_size = 256K

read_rnd_buffer_size = 256K

net_buffer_length = 2K

thread_stack = 128K

pid-file = /var/run/mysqld/mysqld.pid

 

server-id = 1

log-bin=mysql-bin

 

my-slave.cnf:

 

port = 3307

socket = /tmp/mysql2.sock

skip-locking

key_buffer = 16K

max_allowed_packet = 1M

table_cache = 4

sort_buffer_size = 64K

read_buffer_size = 256K

read_rnd_buffer_size = 256K

net_buffer_length = 2K

thread_stack = 128K

pid-file = /var/run/mysqld/mysqld2.pid

 

server-id = 2

 

Step4:分别对两个服务器执行

sudo ./mysql_install_db --defaults-file=/etc/my-master.cnf

sudo ./mysql_install_db --defaults-file=/etc/my-slave.cnf

 

Step5:修改数据目录权限,chown mysql:mysql -R var

Step6:创建pid文件目录,并修改权限

sudo mkdir /var/run/mysqld

sudo chgrp mysql /var/run/mysqld

sudo chmod g+w /var/run/mysqld

 

最后分别运行相应的服务器,例如mysql-master:

./mysqld-safe --defaults-file=/etc/my-master.cnf

运行客户端

./mysql --defaults-file=/etc/my-master.cnf

 

当然,我们也可以把相应的服务器启动语句写入到脚本里,一次启动两个服务器

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