MySQL5.6多实例部署
无论是迫于预算,亦或者是领导要求,多实例的安装也是DBA必须掌握的技术,他的启停和登录方式和单实例安装数据库略有不同,本文记录下如何完成MySQL5.6多实例部署。
首先我们看一下my.cnf和单实例的区分:
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[root@HE1 scripts]#cat /etc/my.cnf[client]#port = 3306#socket = /tmp/mysql.sock#default-character-set = utf8 [mysql]#default-character-set = utf8 [mysqld3306]port = 3306basedir = /usr/local/mysqldatadir = /data/mysql_3306socket = /tmp/mysql_3306.sockslow_query_log_file = /data/mysql_3306/slow.loglog-error = /data/mysql_3306/error.loglog-bin = /data/mysql_3306/mysql-binsync_binlog = 1binlog_format = rowtransaction_isolation = REPEATABLE-READinnodb_buffer_pool_size = 100m [mysqld3308]port = 3308basedir = /usr/local/mysqldatadir = /data/mysql_3308socket = /tmp/mysql_3308.sockslow_query_log = 1slow_query_log_file = /data/mysql_3308/slow.loglog-error = /data/mysql_3308/error.loglong_query_time = 1log-bin = /data/mysql_3308/mysql-binsync_binlog = 1binlog_cache_size = 4Mdefault-storage-engine = InnoDBbinlog_format = rowtransaction_isolation = REPEATABLE-READinnodb_buffer_pool_size = 100m [mysqld_multi]mysqld=/usr/local/mysql/bin/mysqld_safemysqladmin=/usr/local/mysql/bin/mysqladmin [mysqldump]quickmax_allowed_packet = 32M |
可以看出,多实例的my.cnf实际上就是如上所示,本文为了演示实验环境,innodb_buffer_pool_size仅仅开了100m,真实的生产库中多实例部署该参数要开大些,两个实例该参数的值达到内存的50%-80%都可以。
下面开始初始化我们的数据库
首先创建我们的数据目录
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[root@HE1 ~]#mkdir -p /data/mysql_3306[root@HE1 ~]#mkdir -p /data/mysql_3308[root@HE1 ~]#echo "export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib" >>/etc/profile |
进入到mysql的scripts文件夹下对数据库进行初始化,这里我们对3306端口数据库进行初始化
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[root@HE1 scripts]#./mysql_install_db --basedir=/usr/local/mysql --datadir=/data/mysql_3306 --defaults-file=/etc/my.cnf --user=mysql |
这里我们对3308端口数据库进行初始化
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[root@HE1scripts]# ./mysql_install_db --basedir=/usr/local/mysql --datadir=/data/mysql_3308 --defaults-file=/etc/my.cnf --user=mysql |
初始化完成后,我们便可以启停数据库了,和单实例不同,多实例采用mysqld_multi来启停数据库
[root@HE1 bin]# ./mysqld_multi --defaults-file=/etc/my.cnf --user=root --password=MANAGER start 3306,3308
可以利用mysqld_multi的report命令来检测多实例的运行状况
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[root@HE1 bin]#./mysqld_multi reportReporting MySQL serversMySQL server from group: mysqld3306 is runningMySQL server from group: mysqld3308 is running |
登录方式和单实例大体相同,不过由于多实例的存在,我们需要指定不同的端口号
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[root@HE1 bin]# mysql -uroot -p -P3306 -h 192.168.1.48Enter password:Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 6 Server version: 5.6.16-log MySQL Community Server (GPL) Copyright (c) 2000,2014, Oracle and/or its affiliates. All rights reserved. Oracle is aregistered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h'for help. Type '\c' to clear the current input statement. mysql> show databases;+--------------------+| Database |+--------------------+| information_schema|| 3306db || mysql || performance_schema|| test |+--------------------+5 rows in set (0.00 sec) |
当然,利用socket文件登录也是可以的
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[root@HE1 bin]#mysql -uroot -p -S /data/mysql_3306/mysql_3306.sockEnter password:Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 7 Server version: 5.6.16-log MySQL Community Server (GPL) Copyright (c) 2000,2014, Oracle and/or its affiliates. All rights reserved. Oracle is aregistered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h'for help. Type '\c' to clear the current input statement. mysql> show databases;+--------------------+| Database |+--------------------+| information_schema|| 3306db || mysql || performance_schema|| test |+--------------------+5 rows in set (0.00 sec) |
这里是登录3308端口数据库
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[root@HE1 bin]#mysql -uroot -p -P3308 -h 192.168.1.48Enter password:Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 8 Server version: 5.6.16-log MySQL Community Server (GPL) Copyright (c) 2000,2014, Oracle and/or its affiliates. All rights reserved. Oracle is aregistered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h'for help. Type '\c' to clear the current input statement. Type 'help;' or '\h'for help. Type '\c' to clear the current input statement. mysql> show databases;+--------------------+| Database |+--------------------+| information_schema|| 3308db || mysql || performance_schema|| test |+--------------------+5 rows in set (0.00sec) mysql> quitBye |
利用3308端口的socket文件登录数据库
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[root@HE1 bin]#mysql -uroot -p -S /data/mysql_3308/mysql_3308.sockEnter password:Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 9 Server version: 5.6.16-log MySQL Community Server (GPL) Copyright (c) 2000,2014, Oracle and/or its affiliates. All rights reserved. Oracle is aregistered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h'for help. Type '\c' to clear the current input statement. mysql> show databases;+--------------------+| Database |+--------------------+| information_schema|| 3308db || mysql || performance_schema|| test |+--------------------+5 rows in set (0.00sec) |
至此,MySQL5.6多实例部署完成。
本文出自 “岁伏” 博客,请务必保留此出处http://suifu.blog.51cto.com/9167728/1850560
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