docker mysql 主从复制

当然首先 docker pull mysql

mkdir /usr/local/mysqlData/master/cnf
mkdir /usr/local/mysqlData/master/data
vi /usr/loal/mysqlData/master/cnf/mysql.cnf

[mysqld]
pid-file    = /var/run/mysqld/mysqld.pid
socket    = /var/run/mysqld/mysqld.sock
datadir    = /var/lib/mysql

symbolic-links=0

character-set-server = utf8
#skip-networking
innodb_print_all_deadlocks = 1
max_connections = 2000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 128
max_allowed_packet = 4M
binlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 16M  

read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 28M
key_buffer_size = 4M  

thread_cache_size = 8  

query_cache_type = 1
query_cache_size = 8M
query_cache_limit = 2M  

ft_min_word_len = 4  

log-bin = mysql-bin
server-id = 1
binlog_format = mixed  

performance_schema = 0
explicit_defaults_for_timestamp  

#lower_case_table_names = 1  

interactive_timeout = 28800
wait_timeout = 28800  

# Recommended in standard MySQL setup  

sql_mode=NO_ENGINE_SUBSTITUTION,NO_AUTO_CREATE_USER,STRICT_TRANS_TABLES   

[mysqldump]
quick
max_allowed_packet = 16M  

[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M

docker run -itd -p : --name master -v /usr/local/mysqlData/master/cnf:/etc/mysql/conf.d -v /usr/local/mysqlData/master/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=masterpwd 5709795eeffa

，并添加复制master数据的用户，等下会用上

[root@ ~]# docker exec -it 942c2253509c /bin/bash
root@942c2253509c:/# mysql -uroot -pmasterpwd 

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'masterpwd' WITH GRANT OPTION;
Query OK,  rows affected,  warning (0.00 sec)

mysql> GRANT REPLICATION SLAVE ON *.* to 'reader'@'%' identified by 'readerpwd';

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mkdir /usr/local/mysqlData/slave/cnf
mkdir /usr/local/mysqlData/slave/data
vi /usr/loal/mysqlData/slave/cnf/mysql.cnf

[mysqld]
pid-file    = /var/run/mysqld/mysqld.pid
socket    = /var/run/mysqld/mysqld.sock
datadir    = /var/lib/mysql

symbolic-links=0

character-set-server = utf8
#skip-networking
innodb_print_all_deadlocks = 1
max_connections = 2000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 128
max_allowed_packet = 4M
binlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 16M  

read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 28M
key_buffer_size = 4M  

thread_cache_size = 8  

query_cache_type = 1
query_cache_size = 8M
query_cache_limit = 2M  

ft_min_word_len = 4  

log-bin = mysql-bin
server-id = 2
binlog_format = mixed  

performance_schema = 0
explicit_defaults_for_timestamp  

#lower_case_table_names = 1  

interactive_timeout = 28800
wait_timeout = 28800  

# Recommended in standard MySQL setup  

sql_mode=NO_ENGINE_SUBSTITUTION,NO_AUTO_CREATE_USER,STRICT_TRANS_TABLES   

[mysqldump]
quick
max_allowed_packet = 16M  

[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M

 创建远程连接用户，并赋予查询数据库，以及查询的权限，可以用于读写分离

docker run -itd -p : --name master -v /usr/local/mysqlData/slave/cnf:/etc/mysql/conf.d -v /usr/local/mysqlData/slave/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=slavepwd 5709795eeffa

#进入容器开启root 远程访问
[root@ ~]# docker exec -it 942c2253509c /bin/bash
root@942c2253509c:/# mysql -uroot -pslavepwd

mysql> grant SHOW DATABASES,SELECT on *.* to 'slave'@'%' identified by 'slavepwd';

mysql> FLUSH PRIVILEGES;
Query OK,  rows affected (0.00 sec)

mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin. |       |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
 row in set (0.00 sec)

mysql> change master to master_host='192.168.1.9',master_user='reader',master_password='readerpwd',master_log_file='mysql-bin.000007',master_log_pos=;
Query OK,  rows affected,  warnings (0.03 sec)

mysql> start slave;
Query OK,  rows affected (0.03 sec)

mysql> show slave status\G
*************************** . row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.9
                  Master_User: reader
                  Master_Port:
                Connect_Retry:
              Master_Log_File: mysql-bin.
          Read_Master_Log_Pos:
               Relay_Log_File: 0b763a8d1ddd-relay-bin.
                Relay_Log_Pos:
        Relay_Master_Log_File: mysql-bin.
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes

mysql> create database slavetest;
Query OK,  row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| slavetest          |
| sys                |
+--------------------+
 rows in set (0.00 sec)