docker mysql 主从复制

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　　当然首先 docker pull mysql
宿主机创建文件夹持久化mysql data 以及mysql.cnf
MASTER
mkdir /data/mysql/master/cnf
mkdir /data/mysql /master/data
vi /data/mysql /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
　　启动容器
docker run -itd -p 3306:3306 --name master -v /data/mysql/master/cnf:/etc/mysql/conf.d -v /data/mysql/master/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=masterpwd 5709795eeffa
　　进入容器开启root远程访问，并添加复制master数据的用户，等下会用上
[root@192 ~]# 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, 0 rows affected, 1 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)
　　SLAVE
　　mkdir /data/mysql/slave/cnf
mkdir /data/mysql/slave/data
vi /data/mysql/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
　　进入master
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000007 |      675 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
row in set (0.00 sec)
　　进入slave
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=501;
Query OK, 0 rows affected, 2 warnings (0.03 sec)
　　mysql> start slave;
Query OK, 0 rows affected (0.03 sec)
　　mysql> show slave status\G
1. row
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.9
Master_User: reader
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000007
Read_Master_Log_Pos: 501
Relay_Log_File: 0b763a8d1ddd-relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000007
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
　　测试
进入master
　　mysql> create database slavetest;
Query OK, 1 row affected (0.00 sec)
　　进入slave
　　mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| slavetest          |
| sys                |
+--------------------+
rows in set (0.00 sec)