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 | +------+ | 1 | | 2 | | 3 | | 4 | | 5 | | 6 | +------+ mysql> grant replication slave on *.* to 'replication'@'192.168.132.122' identified by '1234567'; mysql> grant all on *.* to 'root'@'192.168.132.122' identified by '1234567'; 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 5.7.26, for Linux (x86_64) -- -- Host: 192.168.132.121 Database: darren -- ------------------------------------------------------ -- Server version 5.7.26-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=9883; #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(11) 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 (1),(2),(3),(4),(5),(6),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1),(1); /*!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 2019-07-07 6:09:21
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.000002 | 40445 | | | | +-------------------+----------+--------------+------------------+-------------------+
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 | +--------------------+ 5 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=3306,master_user='replication',master_password='1234567',master_log_file='master-bin.000002',master_log_pos=9883; Query OK, 0 rows affected, 2 warnings (0.02 sec) mysql> start slave; Query OK, 0 rows affected (0.01 sec) mysql> show slave statusG; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.132.121 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000002 Read_Master_Log_Pos: 40445 Relay_Log_File: relay-log.000002 Relay_Log_Pos: 30883 Relay_Master_Log_File: master-bin.000002 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: 40445 Relay_Log_Space: 31084 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: 1 Master_UUID: 6b00724f-a094-11e9-8f47-000c2991dd19 Master_Info_File: /data/mysql/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL 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: 1 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;
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 (5); Query OK, 1 row affected (0.00 sec) mysql> select * from darren.test1; +------+ | id | +------+ | 5 | +------+ 192.168.132.122查看 mysql> select * from darren.test1; +------+ | id | +------+ | 5 | +------+
在线不停业务配置主从同步数据成功