mysql主丛之基于binlog的不停业务配置主从

一环境准备

主:192.168.132.121

从:192.168.132.122

主的数据库上面已经有数据,而且还在不断的写入

mysql> select * from darren.test;

+------+

| id   |

+------+

|     |

|     |

|     |

|     |

|     |

|     |

+------+

mysql> grant replication slave on *.* to 'replication'@'192.168.132.122' identified by '';

mysql> grant all on *.* to 'root'@'192.168.132.122' identified by '';

mysql> show variables like '%engine%';

+----------------------------------+--------+

| Variable_name | Value |

+----------------------------------+--------+

| default_storage_engine | InnoDB |

| default_tmp_storage_engine | InnoDB |

| disabled_storage_engines | |

| internal_tmp_disk_storage_engine | InnoDB |

+----------------------------------+--------+

使用循环向表里写数据

[root@master mysql]# while true ; do mysql -uroot -p123456 -e 'use darren;insert into test values (1);'; sleep 1; done

二配置主从

2.1 导出数据的现有数据

[root@slave mysql]# cd /opt/

root@slave opt]# mysqldump -h192.168.132.121 -uroot -p1234567 --default-character-set=utf8 --databases darren --single-transaction --master-data=2 >daren.sql

[root@slave opt]# ll

-rw-r--r--. 1 root root 786 Jul 7 06:00 daren.sql

[root@slave opt]# cat daren.sql

-- MySQL dump 10.13  Distrib 5.7., for Linux (x86_64)

--

-- Host: 192.168.132.121    Database: darren

-- ------------------------------------------------------

-- Server version    5.7.-log

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8 */;

/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;

/*!40103 SET TIME_ZONE='+00:00' */;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;

/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;

/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;

/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--

-- Position to start replication or point-in-time recovery from

--

-- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000002', MASTER_LOG_POS=;    #chang master的信息,位置9883,同步需要从这里同步

--

-- Current Database: `darren`

--

CREATE DATABASE /*!32312 IF NOT EXISTS*/ `darren` /*!40100 DEFAULT CHARACTER SET latin1 */;

USE `darren`;

--

-- Table structure for table `test`

--

DROP TABLE IF EXISTS `test`;

/*!40101 SET @saved_cs_client     = @@character_set_client */;

/*!40101 SET character_set_client = utf8 */;

CREATE TABLE `test` (

  `id` int() DEFAULT NULL

) ENGINE=InnoDB DEFAULT CHARSET=latin1;

/*!40101 SET character_set_client = @saved_cs_client */;

--

-- Dumping data for table `test`

--

LOCK TABLES `test` WRITE;

/*!40000 ALTER TABLE `test` DISABLE KEYS */;

INSERT INTO `test` VALUES (),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),(),();

/*!40000 ALTER TABLE `test` ENABLE KEYS */;

UNLOCK TABLES;

/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;

/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;

/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;

/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;

/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on --  ::

由于一直在主写数据

mysql> show master status;

+-------------------+----------+--------------+------------------+-------------------+

| File              | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+-------------------+----------+--------------+------------------+-------------------+

| master-bin. |     |              |                  |                   |

+-------------------+----------+--------------+------------------+-------------------+

2.2 把sql导入到备库

[root@slave opt]# mysql -uroot -p123456 --default-character-set=utf8 < daren.sql

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| darren             |

| mysql              |

| performance_schema |

| sys                |

+--------------------+

 rows in set (0.00 sec)

mysql> select * from darren.test;

2.3 配置从端,同步数据

mysql> change master to master_host='192.168.132.121',master_port=,master_user='replication',master_password='',master_log_file='master-bin.000002',master_log_pos=;

Query OK,  rows affected,  warnings (0.02 sec)

mysql> start slave;

Query OK,  rows affected (0.01 sec)

mysql> show slave status\G;

*************************** . row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 192.168.132.121

                  Master_User: replication

                  Master_Port:

                Connect_Retry:

              Master_Log_File: master-bin.

          Read_Master_Log_Pos:

               Relay_Log_File: relay-log.

                Relay_Log_Pos:

        Relay_Master_Log_File: master-bin.

             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:

                   Last_Error:

                 Skip_Counter:

          Exec_Master_Log_Pos:

              Relay_Log_Space:

              Until_Condition: None

               Until_Log_File:

                Until_Log_Pos:

           Master_SSL_Allowed: No

           Master_SSL_CA_File:

           Master_SSL_CA_Path:

              Master_SSL_Cert:

            Master_SSL_Cipher:

               Master_SSL_Key:

        Seconds_Behind_Master:

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno:

                Last_IO_Error:

               Last_SQL_Errno:

               Last_SQL_Error:

  Replicate_Ignore_Server_Ids:

             Master_Server_Id:

                  Master_UUID: 6b00724f-a094-11e9-8f47-000c2991dd19

             Master_Info_File: /data/mysql/master.info

                    SQL_Delay:

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates

           Master_Retry_Count:

                  Master_Bind:

      Last_IO_Error_Timestamp:

     Last_SQL_Error_Timestamp:

               Master_SSL_Crl:

           Master_SSL_Crlpath:

           Retrieved_Gtid_Set:

            Executed_Gtid_Set:

                Auto_Position:

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

 row in set (0.00 sec)

检验数据是否同步

192.168.132.121查看

mysql> select * from darren.test;

已经同步

2.4 检验数据同步

mysql> create table darren.test1 (id int);

mysql> insert into darren.test1 values ();

Query OK,  row affected (0.00 sec)

mysql> select * from darren.test1;

+------+

| id   |

+------+

|     |

+------+

192.168..122查看

mysql> select * from darren.test1;

+------+

| id   |

+------+

|     |

+------+

在线不停业务配置主从同步数据成功