mysql mysqld_multi 单机多进程

xywuyiba6

1，准备好mysql环境
　　源码安装mysql参考blog：http://blog.csdn.net/mchdba/article/details/35994251，源码包下载地址：http://download.csdn.net/detail/mchdba/7545037
1.1，准备好安装环境
　　groupaddmysql
　　useradd-g mysql mysql
　　autoreconf--force --install
　　libtoolize--automake --force
　　automake--force --add-missing
　　yuminstall -y libtoolize
　　yuminstall cmake -y
　　yuminstall gcc gcc-c++ -y
　　yuminstall -y ncurses-devel.x86_64
　　yuminstall -y cmake.x86_64
　　yuminstall -y libaio.x86_64
　　yuminstall -y bison.x86_64
　　yuminstall -y gcc-c++.x86_64
　　yuminstall make -y
1.2，创建mysql编译根目录
　　mkdir-p /usr/local/mysql
1.3，解压缩源码包
　　tar -xvf mysql-5.6.12.tar.gz
　　cd mysql-5.6.12
1.4，编译安装
　　timecmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql-DMYSQL_DATADIR=/home/data/mysql/data -DWITH_INNOBASE_STORAGE_ENGINE=1-DMYSQL_UNIX_ADDR==/usr/local/mysql/mysql.sock -DMYSQL_USER=mysql-DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci
　　由于time make耗时比较长，所以事先已经安装好
　　timemake
　　timemake install
2，准备第一个实例3307
2.1建立好目录
　　mkdir /usr/local/mysql3307
　　chown -R mysql.mysql /usr/local/mysql3307/
　　mkdir -p /home/data/mysql3307/data
　　chown -R mysql.mysql /home/data/mysql3307
　　chown -R mysql.mysql/home/data/mysql3307/data
　　mkdir -p /home/data/mysql3307/binlog
　　chown -R mysql.mysql /home/data/mysql3307
　　mkdir -p /home/data/mysql3307/relay_log/
　　chown -R mysql.mysql /home/data/mysql3307/
2.2 配置文件
　　[mysqld_multi]
　　mysqld = /usr/local/mysql/bin/mysqld_safe
　　mysqladmin =/usr/local/mysql/bin/mysqladmin
　　log =/home/mysql/mydata/log/mysqld_multi.log
　　[mysqld1]
　　socket = /usr/local/mysql3307/mysql.sock
　　port = 3307
　　pid-file = /usr/local/mysql3307/mysqld.pid
　　datadir = /home/data/mysql3307/data
　　log_bin=/home/data/mysql3307/binlog
　　server-id = 1230
　　relay_log =/home/data/mysql3307/relay_log/mysql-relay-bin
　　log_slave_updates = 1
　　read_only = 0
　　innodb_buffer_pool_size = 128M
　　innodb_flush_log_at_trx_commit = 0
2.3 初始化数据库
　　/usr/local/mysql/scripts/mysql_install_db--user=mysql --basedir=/usr/local/mysql --datadir=/home/data/mysql3307/data
3，准备第二个实例3308
3.1 建立好目录
　　mkdir /usr/local/mysql3308
　　chown -R mysql.mysql /usr/local/mysql3308/
　　mkdir -p /home/data/mysql3308/data
　　chown -R mysql.mysql /home/data/mysql3308
　　chown -R mysql.mysql/home/data/mysql3308/data
　　mkdir -p /home/data/mysql3308/binlog
　　chown -R mysql.mysql /home/data/mysql3308
　　mkdir -p /home/data/mysql3308/relay_log/
　　chown -R mysql.mysql /home/data/mysql3308/
3.2 配置文件
　　[mysqld2]
　　socket = /usr/local/mysql3308/mysql.sock
　　port = 3308
　　pid-file = /usr/local/mysql3308/mysqld.pid
　　datadir = /home/data/mysql3308/data
　　log_bin=/home/data/mysql3308/binlog
　　server-id = 2230
　　relay_log =/home/data/mysql3308/relay_log/mysql-relay-bin
　　log_slave_updates = 1
　　read_only = 0
　　innodb_buffer_pool_size = 128M
　　innodb_flush_log_at_trx_commit = 0
3.3 初始化数据库
　　/usr/local/mysql/scripts/mysql_install_db--user=mysql --basedir=/usr/local/mysql --datadir=/home/data/mysql3308/data
4，准备第三个实例3309
4.1 建立好目录
　　mkdir /usr/local/mysql3309
　　chown -R mysql.mysql /usr/local/mysql3309/
　　mkdir -p /home/data/mysql3309/data
　　chown -R mysql.mysql /home/data/mysql3309
　　chown -R mysql.mysql/home/data/mysql3309/data
　　mkdir -p /home/data/mysql3309/binlog
　　chown -R mysql.mysql /home/data/mysql3309
　　mkdir -p /home/data/mysql3309/relay_log/
　　chown -R mysql.mysql /home/data/mysql3309/
4.2 配置文件
　　[mysqld3]
　　socket = /usr/local/mysql3309/mysql.sock
　　port = 3309
　　pid-file = /usr/local/mysql3309/mysqld.pid
　　datadir = /home/data/mysql3309/data
　　log_bin=/home/data/mysql3309/binlog
　　server-id = 3230
　　relay_log = /home/data/mysql3309/relay_log/mysql-relay-bin
　　log_slave_updates = 1
　　read_only = 0
　　innodb_buffer_pool_size = 128M
　　innodb_flush_log_at_trx_commit = 0
4.3 初始化数据库
　　/usr/local/mysql/scripts/mysql_install_db--user=mysql --basedir=/usr/local/mysql --datadir=/home/data/mysql3309/data
　　初始化信息如下所示：
  [mysql@data02 ~]$ /usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/home/data/mysql3309/dataWARNING: Could not write to config file /usr/local/mysql/my-new.cnf: 权限不够Installing MySQL system tables...2015-05-14 09:31:20 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).2015-05-14 09:31:20 12307 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (requested 5000)2015-05-14 09:31:20 12307 [Warning] Buffered warning: Changed limits: table_cache: 431 (requested 2000)2015-05-14 09:31:20 12307 [Note] InnoDB: The InnoDB memory heap is disabled2015-05-14 09:31:20 12307 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins2015-05-14 09:31:20 12307 [Note] InnoDB: Compressed tables use zlib 1.2.32015-05-14 09:31:20 12307 [Note] InnoDB: Using CPU crc32 instructions2015-05-14 09:31:20 12307 [Note] InnoDB: Initializing buffer pool, size = 128.0M2015-05-14 09:31:20 12307 [Note] InnoDB: Completed initialization of buffer pool2015-05-14 09:31:20 12307 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!2015-05-14 09:31:20 12307 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB2015-05-14 09:31:20 12307 [Note] InnoDB: Database physically writes the file full: wait...2015-05-14 09:31:20 12307 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB2015-05-14 09:31:20 12307 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB2015-05-14 09:31:21 12307 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile02015-05-14 09:31:21 12307 [Warning] InnoDB: New log files created, LSN=457812015-05-14 09:31:21 12307 [Note] InnoDB: Doublewrite buffer not found: creating new2015-05-14 09:31:21 12307 [Note] InnoDB: Doublewrite buffer created2015-05-14 09:31:21 12307 [Note] InnoDB: 128 rollback segment(s) are active.2015-05-14 09:31:21 12307 [Warning] InnoDB: Creating foreign key constraint system tables.2015-05-14 09:31:21 12307 [Note] InnoDB: Foreign key constraint system tables created2015-05-14 09:31:21 12307 [Note] InnoDB: Creating tablespace and datafile system tables.2015-05-14 09:31:21 12307 [Note] InnoDB: Tablespace and datafile system tables created.2015-05-14 09:31:21 12307 [Note] InnoDB: Waiting for purge to start2015-05-14 09:31:21 12307 [Note] InnoDB: 5.6.12 started; log sequence number 02015-05-14 09:31:21 12307 [Note] Binlog end2015-05-14 09:31:21 12307 [Note] InnoDB: FTS optimize thread exiting.2015-05-14 09:31:21 12307 [Note] InnoDB: Starting shutdown...2015-05-14 09:31:22 12307 [Note] InnoDB: Shutdown completed; log sequence number 1625977OKFilling help tables...2015-05-14 09:31:22 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).2015-05-14 09:31:22 12332 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (requested 5000)2015-05-14 09:31:22 12332 [Warning] Buffered warning: Changed limits: table_cache: 431 (requested 2000)2015-05-14 09:31:22 12332 [Note] InnoDB: The InnoDB memory heap is disabled2015-05-14 09:31:22 12332 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins2015-05-14 09:31:22 12332 [Note] InnoDB: Compressed tables use zlib 1.2.32015-05-14 09:31:22 12332 [Note] InnoDB: Using CPU crc32 instructions2015-05-14 09:31:22 12332 [Note] InnoDB: Initializing buffer pool, size = 128.0M2015-05-14 09:31:22 12332 [Note] InnoDB: Completed initialization of buffer pool2015-05-14 09:31:22 12332 [Note] InnoDB: Highest supported file format is Barracuda.2015-05-14 09:31:22 12332 [Note] InnoDB: 128 rollback segment(s) are active.2015-05-14 09:31:22 12332 [Note] InnoDB: Waiting for purge to start2015-05-14 09:31:22 12332 [Note] InnoDB: 5.6.12 started; log sequence number 16259772015-05-14 09:31:22 12332 [Note] Binlog end2015-05-14 09:31:22 12332 [Note] InnoDB: FTS optimize thread exiting.2015-05-14 09:31:22 12332 [Note] InnoDB: Starting shutdown...2015-05-14 09:31:24 12332 [Note] InnoDB: Shutdown completed; log sequence number 1625987OKTo start mysqld at boot time you have to copysupport-files/mysql.server to the right place for your systemPLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !To do so, start the server, then issue the following commands:  /usr/local/mysql/bin/mysqladmin -u root password 'new-password'  /usr/local/mysql/bin/mysqladmin -u root -h data02 password 'new-password'Alternatively you can run:  /usr/local/mysql/bin/mysql_secure_installationwhich will also give you the option of removing the testdatabases and anonymous user created by default.  This isstrongly recommended for production servers.See the manual for more instructions.You can start the MySQL daemon with:  cd . ; /usr/local/mysql/bin/mysqld_safe &You can test the MySQL daemon with mysql-test-run.pl  cd mysql-test ; perl mysql-test-run.plPlease report any problems with the ./bin/mysqlbug script!The latest information about MySQL is available on the web at  http://www.mysql.comSupport MySQL by buying support/licenses at http://shop.mysql.comWARNING: Could not copy config file template /usr/local/mysql/support-files/my-default.cnf to/usr/local/mysql/my-new.cnf, may not have access rights to do so.You may want to copy the file manually, or create your own,it will then be used by default by the server when you start it.WARNING: Default config file /etc/my.cnf exists on the systemThis file will be read by default by the MySQL serverIf you do not want to use this, either remove it, or use the--defaults-file argument to mysqld_safe when starting the server5，启动多实例数据库
　　mkdir -p /home/mysql/data/log
　　[mysql@data02 data]$ mysqld_multi--defaults-extra-file=/etc/my.cnf start 1,2,3
　　[mysql@data02 data]$
　　后台日志信息：
　　Starting MySQL servers
　　150514 09:36:14 mysqld_safe Logging to'/home/data/mysql3309/data/data02.err'.
　　150514 09:36:15 mysqld_safe Logging to '/home/data/mysql3308/data/data02.err'.
　　150514 09:36:15 mysqld_safe Logging to'/home/data/mysql3307/data/data02.err'.
　　150514 09:36:15 mysqld_safe Starting mysqlddaemon with databases from /home/data/mysql3308/data
　　150514 09:36:15 mysqld_safe Starting mysqlddaemon with databases from /home/data/mysql3307/data
　　150514 09:36:15 mysqld_safe Starting mysqlddaemon with databases from /home/data/mysql3309/data
6，查看多实例
　　[mysql@data02 ~]$ mysqld_multi--defaults-extra-file=/etc/my.cnf report
　　Reporting MySQL servers
　　MySQL server from group: mysqld1 is running
　　MySQL server from group: mysqld2 is running
　　MySQL server from group: mysqld3 is running
　　[mysql@data02 ~]$
　　后台日志信息：
　　Reporting MySQL servers
　　MySQL server from group: mysqld1 is running
　　MySQL server from group: mysqld2 is running
　　MySQL server from group: mysqld3 is running
7，停止多实例
　　mysqld_multi--defaults-extra-file=/etc/my.cnf stop 1,2,3
　　后台日志信息：
　　Stopping MySQL servers
　　150514 09:35:43 mysqld_safe mysqld from pidfile /usr/local/mysql3309/mysqld.pid ended
　　150514 09:35:43 mysqld_safe mysqld from pidfile /usr/local/mysql3307/mysqld.pid ended
　　150514 09:35:43 mysqld_safe mysqld from pidfile /usr/local/mysql3308/mysqld.pid ended
8，各自登录mysql实例
　　需要指定启动的socket就可以登录到各自的mysql实例，如下所示：
　　[mysql@data02 ~]$ mysql --socket=/usr/local/mysql3308/mysql.sock
　　Welcome to the MySQL monitor.  Commands end with ; or \g.

　　Your MySQL connection>　　Server version: 5.6.12-log Sourcedistribution
　　Copyright (c) 2000, 2013, Oracle and/or itsaffiliates. All rights reserved.
　　Oracle is a registered trademark of OracleCorporation and/or its
　　affiliates. Other names may be trademarksof their respective
　　owners.
　　Type 'help;' or '\h' for help. Type '\c' toclear the current input statement.
　　mysql> select @@port;
　　+--------+
　　| @@port |
　　+--------+
　　|  3308 |
　　+--------+
　　1 row in set (0.00 sec)
　　mysql>
　　mysql> create database d3308;
　　Query OK, 1 row affected (0.04 sec)
　　mysql>
9，可以在多端口上搭建主从、主主服务
9.1，在3307实例建立账号
　　复制账号

　　GRANTREPLICATION SLAVE,RELOAD,SUPER ON *.*TO repl@'192.168.52.%'>　　备份账号

　　GRANTRELOAD, SUPER, LOCK TABLES, REPLICATION CLIENT, CREATE TABLESPACE ON *.* TO'backup'@'192.168.%'>　　GRANTALL PRIVILEGES ON `mysql`.* TO 'backup'@'192.168.%';
　　GRANTEVENT ON *.* TO 'backup'@'192.168.%';
9.2，将数据从3307实例同步到3308端口
　　备份：
　　/usr/local/mysql/bin/mysqldump-ubackup --password=123456 --host=192.168.52.138--socket=/usr/local/mysql3307/mysql.sock --port=3307 -R -E --skip-opt--single-transaction --flush-logs --master-data=2 --add-drop-table--create-option --quick --extended-insert=false --set-charset --disable-keys-A  > /tmp/alldbfullbackup.sql
　　导入：
　　/usr/local/mysql/bin/mysql-uroot -p --socket=/usr/local/mysql3308/mysql.sock --port=3308 show slave status\G
　　*************************** 1. row***************************
　　Slave_IO_State: Waiting formaster to send event
　　Master_Host: 192.168.52.138
　　Master_User: repl
　　Master_Port: 3307
　　Connect_Retry: 60
　　Master_Log_File: mysql-bin.000011
　　Read_Master_Log_Pos: 120

　　>
　　>　　Relay_Master_Log_File: mysql-bin.000011
　　Slave_IO_Running: Yes
　　Slave_SQL_Running: Yes
　　……
　　Seconds_Behind_Master: 0
　　
10，管理单个实例
　　停止实例2：
　　[root@data03 ~]# mysqld_multi--defaults-extra-file=/etc/my.cnf stop 2
　　[root@data03 ~]#
　　后台日志信息：
　　Stopping MySQL servers
　　150517 06:53:43 mysqld_safe mysqld from pidfile /usr/local/mysql3308/mysqld.pid ended
　　mysqld_multi log file version 2.16; run: 日  5月 17 06:53:48 2015
　　启动实例2：
　　[root@data03 ~]# mysqld_multi--defaults-extra-file=/etc/my.cnf start 2
　　[root@data03 ~]#
　　后台日志信息：
　　Starting MySQL servers
　　150517 06:53:48 mysqld_safe Logging to'/home/data/mysql3308/data/data03.err'.
　　150517 06:53:48 mysqld_safe Starting mysqlddaemon with databases from /home/data/mysql3308/data
11，如何使用多实例
　　由于多实例中，各个实例的资源都是不share的，所以要合理分配好各个实例的内存、磁盘等资源，避免out of memery或则 full disk的情况出现。