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| (1)主库模拟数据
mysql> create database mydb;
Query OK, 1 row affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
| mysql |
| performance_schema |
| sys |
+--------------------+
5 rows in set (0.00 sec)
mysql> use mydb
Database changed
mysql> create table t(id int);
Query OK, 0 rows affected (0.01 sec)
mysql> insert into t values (1),(2),(3);
Query OK, 3 rows affected (0.01 sec)
Records: 3 Duplicates: 0 Warnings: 0
mysql> select * from mydb.t;
+------+
| id |
+------+
| 1 |
| 2 |
| 3 |
+------+
3 rows in set (0.00 sec)
(2)备份主库数据
mysqldump -uroot -p -A -R -E --triggers --source-data=2 --single-transaction > /tmp/full.sql
注意: 这里没有加--set-gtid-purged参数，是因为--set-gtid-purged参数默认是on
(3)记录备份文件GTID信息
# more /tmp/full.sql
-- MySQL dump 10.13 Distrib 8.0.34, for Linux (x86_64)
--
-- Host: localhost Database:
-- ------------------------------------------------------
-- Server version 8.0.34
/*!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 */;
/*!50503 SET NAMES utf8mb4 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!50606 SET @OLD_INNODB_STATS_AUTO_RECALC=@@INNODB_STATS_AUTO_RECALC */;
/*!50606 SET GLOBAL INNODB_STATS_AUTO_RECALC=OFF */;
/*!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 */;
SET @MYSQLDUMP_TEMP_LOG_BIN = @@SESSION.SQL_LOG_BIN;
SET @@SESSION.SQL_LOG_BIN= 0;
--
-- GTID state at the beginning of the backup
--
SET @@GLOBAL.GTID_PURGED=/*!80000 '+'*/ '4aea15c3-e3a1-11ef-934f-000c29ac349c:1-5';
(4)将导出文件复制从服务器
# scp /tmp/full.sql 192.168.1.152:/tmp
(5)从数据库恢复数据
从库执行以下命令:
mysql> reset master;
mysql> reset replica all;
mysql> source /tmp/full.sql
mysql> CHANGE REPLICATION SOURCE TO
SOURCE_HOST='192.168.1.151',
SOURCE_USER='repl',
SOURCE_PASSWORD='123456',
SOURCE_PORT=3306,
SOURCE_AUTO_POSITION = 1;
注意:
这种方法生成的备库生成的gtid中的uuid值与主库一样,192.168.1.151为主库IP
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