Mysql multi-instance configuration

Mysql multi-instance common configuration methods:

Install mysql dependent packages

yum install ncurses-devel libaio-devel -y

mysql profile: pull to server

[root@MySql ~]# tree

.

|-- 3306

| |-- my.cnf

| `-- mysql

|-- 3307

| |-- my.cnf

| `-- mysql

Copy Configuration Files

[root@MySql ~]# mkdir -p /data/3306

[root@MySql ~]# mkdir -p /data/3307

[root@MySql ~]# cp 3306/my.cnf /data/3306

[root@MySql ~]# cp 3306/mysql /data/3306

[root@MySql ~]# cp 3307/my.cnf /data/3307

[root@MySql ~]# cp 3307/mysql /data/3307

[root@MySql 3306]# vi my.cnf

server-id = 1 The server-id of the two profiles should be different

Authorized:

[root@MySql 3306]# chmod +x /data/3306/mysql

[root@MySql 3306]# chmod +x /data/3307/mysql

[root@MySql ~]# chown -R mysql.mysql /data

[root@MySql 3306]# pwd

/data/3306

[root@MySql 3306]# ll

total 12

drwxr-xr-x 2 mysql mysql 4096 Mar 21 22:28 data

-rw-r--r-- 1 mysql mysql 1899 Mar 20 04:15 my.cnf

-rw-r--r-- 1 mysql mysql 1307 Mar 20 04:15 mysql

Multi-instance startup file startup mysql service essence:

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

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

Stop mysql service essence of multi-instance startup file:

mysqladmin -uroot -p123456 -S /data/3306/mysql.sock shutdown

mysqladmin -uroot -p123456 -S /data/3307/mysql.sock shutdown

Set the mysql startup command environment variable, you can use which mysql, then cp

Initialize mysql multi-instance database files

First, the initialization command is:

Mysql 5.1.X initialization command:

mysql_install_db --basedir=/usr/local/mysql --datadir=/data/3306/data --user=mysql

Mysql 5.5.X initialization command:

cd /usr/local/mysql/scripts ? The path is different from that of 5.1 and is not under the mysql bin path.

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

operation

[root@MySql ~]# cd /usr/local/mysql/scripts/

[root@MySql scripts]# ll

total 16

-rwxr-xr-x 1 7161 wheel 14816 Jun 19 2013 mysql_install_db

[root@MySql scripts]# ./ mysql_install_db --basedir=/usr/local/mysql --datadir=/data/3306/data --user=mysql

[root@MySql scripts]# ./ mysql_install_db --basedir=/usr/local/mysql --datadir=/data/3307/data --user=mysql

Second: Start the database

[root@MySql scripts]# /data/3306/mysql start

Starting MySQL...

[root@MySql scripts]# /data/3307/mysql start

Starting MySQL...

[root@MySql scripts]# netstat -lnptu |grep 330 tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 6668/mysqld

tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1367/mysqld

View directory after startup

[root@MySql 3306]# ll

total 36

drwxr-xr-x 5 mysql mysql 4096 Mar 21 23:11 data

-rw-r--r-- 1 mysql mysql 1891 Mar 21 23:05 my.cnf

-rwxr-xr-x 1 mysql mysql 1305 Mar 21 22:51 mysql

-rw-rw---- 1 mysql mysql 126 Mar 21 23:07 mysql-bin.000001

-rw-rw---- 1 mysql mysql 107 Mar 21 23:11 mysql-bin.000002

-rw-rw---- 1 mysql mysql 56 Mar 21 23:11 mysql-bin.index

srwxrwxrwx 1 mysql mysql 0 Mar 21 23:11 mysql.sock

-rw-r----- 1 mysql root 2792 Mar 21 23:11 mysql_3306.err

-rw-rw---- 1 mysql mysql 5 Mar 21 23:11 mysqld.pid

[root@MySql 3307]# ll

total 28

drwxr-xr-x 5 mysql mysql 4096 Mar 21 23:07 data

-rw-r--r-- 1 mysql mysql 1893 Mar 21 23:04 my.cnf

-rwxr-xr-x 1 mysql mysql 1305 Mar 21 22:52 mysql

srwxrwxrwx 1 mysql mysql 0 Mar 21 23:07 mysql.sock

-rw-r----- 1 mysql root 1403 Mar 21 23:07 mysql_3307.err

-rw-rw---- 1 mysql mysql 5 Mar 21 23:07 mysqld.pid

sign-on database

After MySQL database is installed, by default, the administrator account is five passwords.

[root@MySql 3306]# mysql -S /data/3306/mysql.sock

mysql> system ls ==》Do not quit executing commands

data mysql mysql-bin.000002 mysql.sock mysql_oldboy3306.err

my.cnf mysql-bin.000001 mysql-bin.index mysql_3306.err mysqld.pid

system mysql -S /data/3307/mysql.sock; log in directly to another database

restart the database

[root@MySql scripts]# /data/3306/mysql stop

[root@MySql scripts]# /data/3306/mysql start

mysql multi-instance configuration completed