使用mysqld_multi實現單系統中配置多個MySQL伺服器執行個體_Mysql

來源:互聯網
上載者:User

本文講利用MySQL源碼安裝MySQL並用mysqld_multi配置多執行個體。

1、下載MySQL源碼安裝版本

到MySQL官網尋找到相應版本下載,本文下載的是5.1版本

複製代碼 代碼如下:

wget -c ftp://ftp.mirrorservice.org/sites/ftp.mysql.com/Downloads/MySQL-5.1/mysql-5.1.60.tar.gz 

2、解壓安裝

複製代碼 代碼如下:

tar -zxv -f mysql-5.1.60.tar.gz 
 
./configure --prefix=/usr/local/mysql --with-charset=utf8  
--with-extra-charset=all --enable-thread-safe-client --enable-assembler  
--with-readline --with-big-tables  
--with-named-curses-libs=/usr/lib/libncursesw.so.5 
 
make && make install 

3、添加使用者和使用者組

複製代碼 代碼如下:

groupadd mysql #添加mysql使用者組 
useradd -g mysql mysql #建立mysql使用者並把它放到mysql組下 
chown -R root:mysql /usr/local/mysql #修改mysql檔案屬性 

4、初始化資料目錄

複製代碼 代碼如下:

#把用到的工具添加到/usr/bin目錄 
ln -s /usr/local/mysql/bin/mysqld_multi /usr/bin/mysqld_multi 
ln -s /usr/local/mysql/bin/mysql_install_db /usr/bin/mysql_install_db 
 
#初始化四個資料目錄 
mysql_install_db --datadir=/usr/local/var/mysql1 --user=mysql 
mysql_install_db --datadir=/usr/local/var/mysql2 --user=mysql 
mysql_install_db --datadir=/usr/local/var/mysql3 --user=mysql 
mysql_install_db --datadir=/usr/local/var/mysql4 --user=mysql 
 
#修改屬性 
chown -R mysql /usr/local/var/mysql1  
chown -R mysql /usr/local/var/mysql2 
chown -R mysql /usr/local/var/mysql3  
chown -R mysql /usr/local/var/mysql4  

5、配置多執行個體啟動指令碼

    從MySQL的源碼中把複製到/etc/init.d/目錄下

複製代碼 代碼如下:

cp /usr/local/src/mysql-5.1.60/support-files/mysqld_multi.server /etc/init.d/mysqld_multi.server 
 
#修改basedir和bindir為安裝路徑 
basedir=/usr/local/mysql 
bindir=/usr/local/mysql/bin 

6、配置多執行個體資料庫設定檔

用mysqld_multi工具查看該設定檔的模板方法,命令為:mysqld_multi --example
在/etc/目錄下建立建立檔案/etc/mysqld_multi.cnf,把mysqld_multi --example產生的檔案粘進去,修改相應屬性,如:mysqld,mysqladmin,socket,port,pid-file,datadir,user等。

複製代碼 代碼如下:

[mysqld_multi] 
mysqld     = /usr/local/mysql/bin/mysqld_safe 
mysqladmin = /usr/local/mysql/bin/mysqladmin 
#user       = mysql 
#password   = my_password 
 
[mysqld1] 
socket     = /usr/local/var/mysql1/mysql1.sock 
port       = 3306 
pid-file   = /usr/local/var/mysql1/mysql1.pid 
datadir    = /usr/local/var/mysql1 
#language   = /usr/local/mysql/share/mysql/english 
user       = mysql 
 
[mysqld2] 
socket     = /usr/local/var/mysql2/mysql2.sock 
port       = 3307 
pid-file   = /usr/local/var/mysql2/mysql2.pid 
datadir    = /usr/local/var/mysql2 
#language   = /usr/local/mysql/share/mysql/english 
user       = mysql 
 
[mysqld3] 
socket     = /usr/local/var/mysql3/mysql3.sock 
port       = 3308 
pid-file   = /usr/local/var/mysql3/mysql3.pid 
datadir    = /usr/local/var/mysql3 
#language   = /usr/local/mysql/share/mysql/english 
user       = mysql 
 
[mysqld4] 
socket     = /usr/local/var/mysql4/mysql4.sock 
port       = 3309 
pid-file   = /usr/local/var/mysql4/mysql4.pid 
datadir    = /usr/local/var/mysql4 
#language   = /usr/local/mysql/share/mysql/english 
user       = mysql 

7、啟動多執行個體資料庫

複製代碼 代碼如下:

將/usr/local/mysql/bin加到$PATH環境變數裡 
export PATH=/usr/local/mysql/bin:$PATH 
 
#查看資料庫狀態 
mysqld_multi --defaults-extra-file=/etc/mysqld_multi.cnf report 
#結果都為沒有運行 
Reporting MySQL servers 
MySQL server from group: mysqld1 is not running 
MySQL server from group: mysqld2 is not running 
MySQL server from group: mysqld3 is not running 
MySQL server from group: mysqld4 is not running 
 
#啟動 
mysqld_multi --defaults-extra-file=/etc/mysqld_multi.cnf start 
#結果為 
Reporting MySQL servers 
MySQL server from group: mysqld1 is not running 
MySQL server from group: mysqld2 is not running 
MySQL server from group: mysqld3 is not running 
MySQL server from group: mysqld4 is not running 
 
#啟動具體某一個執行個體可在start、stop後面加上具體資料1,2,3等 

8、查看運行結果

複製代碼 代碼如下:

#查看相應連接埠是否已經被監聽 
netstat -tunlp 
 
#查看是否有活動進程 
ps -aux|grep mysql 

9、登入相應資料庫

複製代碼 代碼如下:

#進入連接埠為3306的資料庫 
mysql -uroot -p -h127.0.0.1 -P3306 
 
#通過sock檔案登入 
mysql -uroot -p -S /usr/local/var/mysql1/mysql1.sock 
 
 #查看socket檔案 
mysql> SHOW VARIABLES LIKE 'socket'; 
 
#查看pid檔案 
mysql> SHOW VARIABLES LIKE '%pid%'; 

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