MySQL build master-slave synchronization - build with docker

Write it at the front

docker install 、docker install mysql, Please move here ：
centos7 install docker- Simple and detailed without pit
docker install mysql- Simple without pit

build master

1. build docker Environmental Science

docker run -p 3307:3306 --name mysql-master \
-v /mydata/mysql/master/log:/var/log/mysql \
-v /mydata/mysql/master/data:/var/lib/mysql \
-v /mydata/mysql/master/conf:/etc/mysql \
-e MYSQL_ROOT_PASSWORD=root \
-d mysql:5.7

Parameter description
-p 3307:3306： The container of 3306 Port mapping to host's 3307 port
-v /mydata/mysql/master/conf:/etc/mysql： Hang the configuration folder to the host
-v /mydata/mysql/master/log:/var/log/mysql： Mount the log folder to the host
-v /mydata/mysql/master/data:/var/lib/mysql/： Mount the configuration folder to the host
-e MYSQL_ROOT_PASSWORD=root： initialization root User's password

2. modify master Configuration of

vi /mydata/mysql/master/conf/my.cnf

Here's the configuration ：

[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
skip-name-resolve
#  Be careful ：skip-name-resolve  Be sure to add. , Otherwise, connect  mysql  Will be super slow 

#  The following is to add  master  Configuration of master-slave replication part 
# Every mysql Service id Cannot be the same 
server_id=1
# Binary on 
log-bin=mysql-bin
# Represent readable and writable 
read-only=0
# Indicates the library that needs to be synchronized 
binlog-do-db=test1
binlog-do-db=test2
# Represents a library that does not need to be synchronized 
replicate-ignore-db=mysql
replicate-ignore-db=sys
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema

3. Restart master

4. Connect master
port 3307
The default username and password is root/root

5. New database
Because we are master The database to be synchronized is specified as test1 and test2, We need to create these two databases

build slave

1. build docker Environmental Science

docker run -p 3317:3306 --name mysql-slaver-01 \
-v /mydata/mysql/slaver/log:/var/log/mysql \
-v /mydata/mysql/slaver/data:/var/lib/mysql \
-v /mydata/mysql/slaver/conf:/etc/mysql \
-e MYSQL_ROOT_PASSWORD=root \
-d mysql:5.7

2. modify salve Configuration of

vi /mydata/mysql/slaver/conf/my.cnf

Here's the configuration ：

[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
skip-name-resolve
#  Be careful ：skip-name-resolve  Be sure to add. , Otherwise, connect  mysql  Will be super slow 

#  The following is to add  master  Configuration of master-slave replication part 
# Every mysql Service id Cannot be the same 
server_id=2
# Binary on 
log-bin=mysql-bin
# Indicates read-only 
read-only=1
# Indicates the library that needs to be synchronized 
binlog-do-db=test1
binlog-do-db=test2
# Represents a library that does not need to be synchronized 
replicate-ignore-db=mysql
replicate-ignore-db=sys
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema

3. Restart salve

4. Connect salve
port 3317
The user name and password are root/root

by master Authorize the user to synchronize his data

1. Add users for synchronization

GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';

2. see master The state of
show master status

Export the primary database data to the secondary database

Directly export the table structure and data of the whole database , Then import from the Library .
Use navicat It's OK to lead , You can also use command to guide , Omitted here .

To configure slaver Sync master data

1. Set the main library connection

change master to master_host='192.168.56.10',master_user='backup',master_password='123456',master_log_file='mysql-bin.000001',master_log_pos=1220,master_port=3307;

notes ：
master_host The address of the main library
master_user Username
master_password Is password
master_log_file For the previous step show master status Found out File
master_log_pos For what was found in the previous step Position
master_port Main library port

2. Enable master-slave replication

start slave;

3. View the slave library status
show slave status

When both of the above are Yes It's a success .

Let's test it

1. The main library creates a table

CREATE TABLE t1 (
id INT NOT NULL,
NAME CHAR ( 20 )
);

2. We can see , The slave library will also be created synchronously

3. Add a new record in the main database , The slave library is also added .

success ！