index

启动 MySQL 服务

1. 创建 network

# 172.18.0.1
docker network create --subnet 172.18.0.0/16 --gateway 172.18.0.1 mysql

2. 启动 MySQL 服务

docker pull mysql:5.7.34
docker run -itd --name mysql1 -p 3316:3306 --network mysql --ip 172.18.0.101 -e MYSQL_ROOT_PASSWORD=123456 mysql:5.7.34
docker run -itd --name mysql2 -p 3326:3306 --network mysql --ip 172.18.0.102 -e MYSQL_ROOT_PASSWORD=123456 mysql:5.7.34

3. 查看 MySQL 运行状态

mysql --version
# mysql  Ver 14.14 Distrib 5.7.34, for Linux (x86_64) using  EditLine wrapper
mysqld --version
# mysqld  Ver 5.7.34 for Linux on x86_64 (MySQL Community Server (GPL))\

配置 MySQL 主从

• binlog 三种模式

https://blog.csdn.net/keda8997110/article/details/50895171

https://www.cnblogs.com/langtianya/p/5504774.html

• binlog 校验模式

https://www.jianshu.com/p/0957a89d4fb4

• 默认 MySQL 配置文件路径

cat /etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf

1. 修改 MySQL 配置

/etc/mysql/mysql.conf.d/mysqld.cnf

[mysqld]
; 不同 Server 需要不同 id
server_id=101

; 启动GTID
gtid-mode=ON
; ON-强制执行GTID一致性
enforce-gtid-consistency=ON

; 开启 MySQL binlog 记录, 使用 mysql-bin 作为binlog文件名前缀
log-bin=mysql-bin
; 指定 binlog 日志模式
;   ROW：以行级别的更改为单位记录。
;   STATEMENT：以 SQL 语句为单位记录更改操作。
;   MIXED：默认情况下使用语句级别记录，但在某些情况下会自动切换到行级别记录1。
binlog_format=ROW
; 关闭 binlog 二进制日志完整性校验
;   NONE：不进行校验。
;   CRC32：使用 CRC32 校验算法。
;   CRC32C：使用 CRC32C 校验算法。
binlog_checksum=NONE

• 检查 MySQL 主节点配置状态

show variables like 'server_id'\G

Variable_name	Value
server_id	101

show master status;

File	Position	Binlog_Do_DB	Binlog_Ignore_DB	Executed_Gtid_Set
mysql-bin.000001	150

2. 创建同步用户

需要确认用户拥有 REPLICATION SLAVE 权限

CREATE USER 'replica_user'@'%' IDENTIFIED BY 'your_password';
GRANT REPLICATION SLAVE ON *.* TO 'replica_user'@'%';
FLUSH PRIVILEGES;

3. 建立主从关系

change master to
    master_host ='172.18.0.101',
    master_port = 3306,
    master_user ='root',
    master_password ='123456',
    master_auto_position =1;

• 启动主从同步

start slave;

• 检查 MySQL 从节点配置状态

show master status;

File	Position	Binlog_Do_DB	Binlog_Ignore_DB	Executed_Gtid_Set
mysql-bin.000001	150

show slave status;

Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	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	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	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	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_UUID	Master_Info_File	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	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
Waiting for master to send event	172.18.0.101	root	3306	60	mysql-bin.000001	150	1b7cd647eb37-relay-bin.000002	355	mysql-bin.000001	Yes	Yes							0		0	150	561	None		0	No						0	No	0		0			101	926acfdd-fa32-11ee-829d-0242ac120065	/var/lib/mysql/master.info	0	null	Slave has read all relay log; waiting for more updates	86400								1

• 确认 当 Slave_IO_Running 与 Slave_SQL_Running 都为 YES 时，则代表主从同步运行正常

• 数据库全量备份 - mydumper

https://github.com/mydumper/mydumper apt-get install mydumper

mkdir -p /tmp/mysql_backup/
mydumper -u root -p 123456 -h 127.0.0.1 -P 3306 -o /tmp/mysql_backup/ -F 4 -t 15 -v 3 -L /tmp/mysql_backup.log > /dev/null 2>&1
ls -lha /tmp/mysql_backup/

核心文件 ./metadata

docker cp mysql1:/tmp /mysql1_tmp docker cp C:\mysql1_tmp\mysql_backup\ mysql2:/tmp

• 数据库全量恢复 - myloader

myloader -u root -p 123456 -h 127.0.0.1 -P 3306 -o -d /tmp/mysql_backup/ -t 8 -v 3

• 设置主从同步

show master status;
show slave status;

stop slave;

reset master;
reset slave;

# from meatdate
set @@GLOBAL.GTID_PURGED = '926acfdd-fa32-11ee-829d-0242ac120065:1-9';

change master to
    master_host ='172.18.0.101',
    master_port = 3306,
    master_user ='root',
    master_password ='123456',
    master_auto_position =1;
set sql_log_bin = 1;
start slave;

show master status;
show slave status;

sql_log_bin = 0 关闭将 sql 记录到 binlog =1 时开启记录到 binlog

TODO

1. MySQL 主从建立

   1. 修改主从 GTID
   2. 跳过指定事务

2. MySQL 全量备份

3. MySQL 全量恢复

4. MySQL 增量备份与恢复 - 主从同步 mysqladmin flush-logs