docker mysql主從複製
阿新 • • 發佈:2019-01-05
一、準備工作
1. docker pull mysql:5.7.21 //拉取mysql5.7.21版本的映象
2. 使用network plugin建立一個新的bridge,然後即可通過–ip 選項自定ip,實現docker 容器固定ip
# 1.設定新的bridge,別名br1,ip段根據個人喜好設定即可
docker network create -d bridge --subnet=192.168.210.0/24 --gateway=192.168.210.1 -o parent=eth0 br1
# 2. 檢視
docker network ls
二、Master 部分
1. 宿主機持久化mysql data 以及mysql.cnf
mkdir -pv /usr/local/mysqlData/master/cnf
mkdir -pv /usr/local/mysqlData/master/data
# 1. 建立mysql.cnf
cd /usr/local/mysqlData/master/cnf
touch mysql.cnf
# 2. 編輯mysql.cnf
vi /usr/loal/mysqlData/master/cnf/mysql.cnf
# 3. master mysql.cnf的內容,複製
[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 = 100 #ip的最後一位,個人設定的masterip為192.168.210.100 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
2. 啟動容器,命名為master
docker run -itd --net=br1 --ip=192.168.210.100 -p 3306:3306 --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 mysql
3.進入master容器,開啟root 遠端訪問, 並新增複製master資料的使用者
[[email protected]192 ~]# docker exec -it master /bin/bash
[email protected]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)
三、Slave 部分(與Master操作類似)
1. 宿主機持久化mysql data 以及mysql.cnf
mkdir -pv /usr/local/mysqlData/slave/cnf
mkdir -pv /usr/local/mysqlData/slave/data
# 1. 建立mysql.cnf
cd /usr/local/mysqlData/slave/cnf
touch mysql.cnf
# 2. 編輯mysql.cnf
vi /usr/loal/mysqlData/slave/cnf/mysql.cnf
# 3. slave mysql.cnf的內容,複製即可。注意ip的設定值
[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 = 101 # id的最後一位,個人設定ip:192.168.210.101
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
2. 啟動容器,命名為slave
docker run -itd --net=br1 --ip=192.168.210.101 -p 3307:3306 --name slave -v /usr/local/mysqlData/slave/cnf:/etc/mysql/conf.d -v /usr/local/mysqlData/slave/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=slavepwd mysql
3.進入slave容器,開啟root 遠端訪問,並新增slave資料的使用者
#進入容器開啟root 遠端訪問
[root@192 ~]# docker exec -it slave /bin/bash
#登陸mysql
root@942c2253509c:/# mysql -uroot -pslavepwd
mysql> grant SHOW DATABASES,SELECT on *.* to 'slave'@'%' identified by 'slavepwd';
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
4. 切換到master容器,進入mysql
[[email protected] ~]# docker exec -it master /bin/bash
[email protected]:/# mysql -uroot -pmasterpwd
# 查詢master的資訊
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 1063 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
5. 切換到slave容器,繼續進行mysql操作
mysql> change master to master_host='192.168.210.100',master_user='reader',master_password='readerpwd',master_log_file='mysql-bin.000003',master_log_pos=1063;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G ;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.210.100
Master_User: reader
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 1063
Relay_Log_File: 785b10c19cd6-relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1063
Relay_Log_Space: 534
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 100
Master_UUID: 03cd5fba-07e3-11e8-81d3-0242c0a8d264
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
ERROR:
No query specified
至此,基礎設定完成,下面進行驗證
即master 新增一個數據庫,檢視slave是否進行相同的判斷。
# master 建立slavetest_success
mysql> create database slavetest_success;
Query OK, 1 row affected (0.00 sec)
# slave 檢視
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| slavetest_success |
| sys |
+--------------------+
5 rows in set (0.00 sec)