Mysql多例項安裝

1.mysql編譯安裝完成後，繼續實現mysql的多例項安裝.

2.建立多例項目錄

mkdir -p /data//data

3.然後修改配置檔案，對應不同埠

cp /usr/local/mysql/support-files/my-small.cnf /data/3306/my.cnf

cp /usr/local/mysql/support-files/my-small.cnf /data/3307/my.cnf

3306/my.cnf

[client]

#password       = your_password
port            = 3306
socket          = /data/3306/mysql.sock
# here follows entries for some specific programs
# the mysql server
[mysqld]
port            = 3306
socket          = /data/3306/mysql.sock
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 = 128k
basedir = /usr/local/mysql
datadir = /data/3306/data
#skip-networking
server-id       = 1

[client]

#password       = your_password
port            = 3307
socket          = /data/3307/mysql.sock
# here follows entries for some specific programs
# the mysql server
[mysqld]
port            = 3307
socket          = /data/3307/mysql.sock
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 = 128k
basedir = /usr/local/mysql
datadir = /data/3307/data
#skip-networking
server-id       = 2

chown -r mysql.mysql /data/

4.多例項初始化

cd /usr/local/mysql/scripts/

./mysql_install_db –basedir=/usr/local/mysql –datadir=/data/3306/data –user=mysql

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

ps -ef|grep mysql

5.多例項登入

mysql -s /data/3306/mysql.sock

mysql -s /data/3307/mysql.sock

或者mysql -h127.0.0.1 -p3306 -uroot -p

mysql -h127.0.0.1 -p3307 -uroot -p

6.多例項啟動.

mysqld_safe –defaults-file=/data/3306/my.cnf 2>&1 > /dev/null &

mysqld_safe –defaults-file=/data/3307/my.cnf 2>&1 > /dev/null &

7.多例項關閉.

mysqladmin -u root -pylq123 -s /data/3306/mysql.sock shutdown

mysqladmin -u root -pylq123 -s /data/3307/mysql.sock shutdown

8.多例項修改密碼.

mysqladmin -s /data/3306/mysql.sock -u root password 『ylq123』

mysqladmin -s /data/3307/mysql.sock -u root password 『ylq123』

9.在mysql控制台執行系統命令.

system ls

system mysql -s /data/3307/mysql.sock

10.修改mysql提示符

prompt mysql(dev)>

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