如何快速使用mysqlreplicate搭建MySQL主从

简介

mysql-utilities工具集是一个集中了多种工具的合集，可以理解为是DBA的工具箱，本文介绍利用其中的mysqlreplicate工具来快速搭建MySQL主从环境。

HE1:192.168.1.248 slave

HE3:192.168.1.250 master

实战

Part1:安装mysql-utilities

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[root@HE1 ~]# tar xvf mysql-utilities-1.5.4.tar.gz   [root@HE1 ~]# cd mysql-utilities-1.5.4   [root@HE1 mysql-utilities-1.5.4]# python setup.py build   [root@HE1 mysql-utilities-1.5.4]# python setup.py install

Part2:基本使用方式

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[root@HE1 ~]# mysqlreplicate --help MySQL Utilities mysqlreplicate version 1.5.4 License type: GPLv2 Usage: mysqlreplicate --master=root@localhost:3306 --slave=root@localhost:3310 --rpl-user=rpl:passwd mysqlreplicate - establish replication with a master Options:   --version    show program's version number and exit   --help    display a help message and exit   --license    display program's license and exit   --master=MASTER  connection information for master server in the form:        < user >[:< password >]@<host>[:<port>][:<socket>] or        <login-path>[:<port>][:<socket>] or <config-        path>[<[ group ]>].   --slave=SLAVE   connection information for slave server in the form:        < user >[:< password >]@<host>[:<port>][:<socket>] or        <login-path>[:<port>][:<socket>] or <config-        path>[<[ group ]>].   --rpl-user=RPL_USER the user and password for the replication user        requirement, in the form: < user >[:< password >] or        <login-path>. E.g. rpl:passwd   -p, --pedantic  fail if storage engines differ among master and slave.   --test-db=TEST_DB  database name to use in testing replication setup        (optional)   --master-log-file=MASTER_LOG_FILE        use this master log file to initiate the slave.   --master-log-pos=MASTER_LOG_POS        use this position in the master log file to initiate        the slave.   -b, --start-from-beginning        start replication from the first event recorded in the        binary logging of the master. Not valid with --master-        log-file or --master-log-pos.   --ssl-ca=SSL_CA  The path to a file that contains a list of trusted SSL        CAs.   --ssl-cert=SSL_CERT The name of the SSL certificate file to use for        establishing a secure connection .   --ssl-key=SSL_KEY  The name of the SSL key file to use for establishing a        secure connection .   --ssl=SSL    Specifies if the server connection requires use of        SSL. If an encrypted connection cannot be established,        the connection attempt fails. By default 0 (SSL not        required).   -v, --verbose   control how much information is displayed. e.g., -v =        verbose, -vv = more verbose, -vvv = debug   -q, --quiet   turn off all messages for quiet execution.

Part3:主库准备

主库创建复制用户

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[root@HE3 ~]# mysql -uroot -p Enter password : Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 23329 Server version: 5.7.16-log MySQL Community Server (GPL) Copyright (c) 2000, 2016, Oracle and / or its affiliates. All rights reserved. Oracle is a registered 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> grant replication client,replication slave on *.* to 'mysync' @ '%' identified by 'MANAGER' ; Query OK, 0 rows affected, 1 warning (0.01 sec) mysql> flush privileges ; Query OK, 0 rows affected (0.01 sec)

Part4:一键配置

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从库进行配置主从执行如下命令 [root@HE1 ~]# mysqlreplicate --master=sys_admin:MANAGER@192.168.1.250:3306 --slave=sys_admin:MANAGER@192.168.1.248:3306 --rpl-user=mysync:MANAGER -b WARNING: Using a password on the command line interface can be insecure. # master on 192.168.1.250: ... connected. # slave on 192.168.1.248: ... connected. # Checking for binary logging on master... # Setting up replication... # ...done.

检查

Part1:mysqlrplcheck检查

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[root@HE1 ~]# mysqlrplcheck --master=sys_admin:MANAGER@192.168.1.250:3306 --slave=sys_admin:MANAGER@192.168.1.248:3306 -s WARNING: Using a password on the command line interface can be insecure. # master on 192.168.1.250: ... connected. # slave on 192.168.1.248: ... connected. Test Description              Status --------------------------------------------------------------------------- Checking for binary logging on master        [pass] Are there binlog exceptions?           [pass] Replication user exists?            [pass] Checking server_id values           [pass] Checking server_uuid values           [pass] Is slave connected to master?          [pass] Check master information file          [pass] Checking InnoDB compatibility          [pass] Checking storage engines compatibility        [pass] Checking lower_case_table_names settings        [pass] Checking slave delay (seconds behind master)       [pass]   # # Slave status: #      Slave_IO_State : Waiting for master to send event       Master_Host : 192.168.1.250       Master_User : mysync       Master_Port : 3306       Connect_Retry : 60      Master_Log_File : mysql-bin.000003     Read_Master_Log_Pos : 384741      Relay_Log_File : HE1-relay-bin.000004       Relay_Log_Pos : 384954     Relay_Master_Log_File : mysql-bin.000003      Slave_IO_Running : Yes      Slave_SQL_Running : Yes      Replicate_Do_DB :     Replicate_Ignore_DB :     Replicate_Do_Table :    Replicate_Ignore_Table :    Replicate_Wild_Do_Table :   Replicate_Wild_Ignore_Table :       Last_Errno : 0       Last_Error :       Skip_Counter : 0     Exec_Master_Log_Pos : 384741      Relay_Log_Space : 1743112      Until_Condition : None      Until_Log_File :       Until_Log_Pos : 0     Master_SSL_Allowed : No     Master_SSL_CA_File :     Master_SSL_CA_Path :      Master_SSL_Cert :      Master_SSL_Cipher :      Master_SSL_Key :     Seconds_Behind_Master : 0   Master_SSL_Verify_Server_Cert : No       Last_IO_Errno : 0       Last_IO_Error :      Last_SQL_Errno : 0      Last_SQL_Error :   Replicate_Ignore_Server_Ids :      Master_Server_Id : 1250       Master_UUID : 1b1daad8-b501-11e6-aa21-000c29c6361d      Master_Info_File : /data/mysql/master.info        SQL_Delay : 0     SQL_Remaining_Delay : None    Slave_SQL_Running_State : Slave has read all relay log; waiting for more updates     Master_Retry_Count : 86400       Master_Bind :    Last_IO_Error_Timestamp :    Last_SQL_Error_Timestamp :      Master_SSL_Crl :     Master_SSL_Crlpath :     Retrieved_Gtid_Set :      Executed_Gtid_Set :       Auto_Position : 0     Replicate_Rewrite_DB :       Channel_Name :     Master_TLS_Version : # ...done.

其他常用工具

Part1:mysqldiskusage检查数据库空间大小

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[root@HE1 ~]# mysqldiskusage --server=sys_admin:MANAGER@localhost WARNING: Using a password on the command line interface can be insecure. # Source on localhost: ... connected. # Database totals: + ---------------------+--------------+ | db_name    |  total | + ---------------------+--------------+ | maxscale_schema  | 14,906  | | mysql    | 14,250,013 | | performance_schema | 818,071  | | sys     | 500,802  | | wms     | 925,929,868 | + ---------------------+--------------+ Total database disk usage = 941,513,660 bytes or 897.90 MB #...done.

Part2:mysqlindexcheck检查冗余索引

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[root@HE1 ~]# mysqlindexcheck --server=sys_admin:MANAGER@localhost wms WARNING: Using a password on the command line interface can be insecure. # Source on localhost: ... connected. # The following index is a duplicate or redundant for table wms.auth_user: # CREATE UNIQUE INDEX `index_user_name` ON `wms`.`auth_user` (`user_name`) USING BTREE #  may be redundant or duplicate of : CREATE INDEX `user_name` ON `wms`.`auth_user` (`user_name`, `state`) USING BTREE # The following index is a duplicate or redundant for table wms.basic_storeage_sapce: # CREATE INDEX `idx_store_district_space_no` ON `wms`.`basic_storeage_sapce` (`store_id`, `district_id`, `store_space_no`) USING BTREE #  may be redundant or duplicate of : CREATE UNIQUE INDEX `idx_store_district_space_no_un` ON `wms`.`basic_storeage_sapce` (`store_id`, `district_id`, `store_space_no`) USING BTREE

——总结——

可以看到利用mysql-utilities工具集中的mysqlreplicate来配置MySQL主从非常简单，mysqlreplicate也提供了各类参数，本文中的-b是指使复制从主二进制日志中的第一个事件开始。mysqlrplcheck 中的-s是指输出show slave status\G的内容。由于笔者的水平有限，编写时间也很仓促，文中难免会出现一些错误或者不准确的地方，不妥之处恳请读者批评指正。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。

原文链接：https://blog.51cto.com/suifu/1878443