如何快速使用mysqlreplicate搭建MySQL主从

数据库  /  管理员 发布于 6年前   206

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

[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

[root@HE1 ~]# mysqlreplicate --helpMySQL Utilities mysqlreplicate version 1.5.4 License type: GPLv2Usage: mysqlreplicate --master=root@localhost:3306 --slave=root@localhost:3310 --rpl-user=rpl:passwd mysqlreplicate - establish replication with a masterOptions: --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

[root@HE3 ~]# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 23329Server 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 itsaffiliates. Other names may be trademarks of their respectiveowners.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

从库进行配置主从执行如下命令[root@HE1 ~]# mysqlreplicate --master=sys_admin:[email protected]:3306 --slave=sys_admin:[email protected]:3306 --rpl-user=mysync:MANAGER -bWARNING: 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

[root@HE1 ~]# mysqlrplcheck --master=sys_admin:[email protected]:3306 --slave=sys_admin:[email protected]:3306 -sWARNING: 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

[root@HE1 ~]# mysqldiskusage --server=sys_admin:MANAGER@localhostWARNING: 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

[root@HE1 ~]# mysqlindexcheck --server=sys_admin:MANAGER@localhost wmsWARNING: 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。