win10 使用Docker配置mysql主從複製
阿新 • • 發佈:2019-04-07
- 拉取映象,我這裡拉取5.6映象
docker pull mysql:5.6.43
2.找一個目錄編寫主從庫配置檔案,這裡我直接在上部落格找的:
(1)主庫master.cnf檔案:
[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
(2)從庫slave.cnf檔案:
[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
3.啟動兩個mysql 埠號分別為 13306 和 23306,注意 執行一下命令需要進入到有master.cnf 和slave.cnf配置的目錄下,可以自己建立一個目錄。另外執行時系統會提示你是否需要共享檔案給docker,點選共享即可。
docker run -p 13306:3306 --name master -v $PWD/master.cnf:/etc/mysql/conf.d/master.cnf -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6.43 docker run -p 23306:3306 --name slave -v $PWD/slave.cnf:/etc/mysql/conf.d/slave.cnf -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6.43
4.主庫建立一個賬,並進行許可權配置。(為了方便我這裡直接用navicat進行連線配置,當然為了提高逼格,你也可以進入容器進行配置)
執行sql:
-- 建立使用者
CREATE user jskj;
GRANT ALL PRIVILEGES ON *.* TO jskj@'%' IDENTIFIED BY '123456';
FLUSH PRIVILEGES;
5.查詢主庫mysql-bin資訊: show master status
6.從庫配置連線主庫,並開啟從庫同步功能
change master to master_host='宿主機ip', master_user='jskj',master_password='123456',master_log_file='mysql-bin.000004',master_log_pos=1689;
7.測試
主庫建立jskj資料庫並建立biz_user表同時插入資料。從庫同步成功:
8.以上配置已經完成,接下來進行要點說明:
(1)資料庫配置說明:
lower_case_table_names=1 : 開啟時,是忽略表名、列名等資料結構的大小寫
server-id=1 :此mysq伺服器的唯一標識,一般第一臺master配置為1 第二臺mysql伺服器配置為2 第三n臺配置為n ...。
log-bin:開啟二進位制記錄。這是為了主從複製而做的設定。本文使用RBR(Row-Based Replication)模式。
slow_query_log=1:開啟慢查詢日誌。如果某一條SQL執行的時間超過long_query_time設定的秒數,那麼就記錄下來。記錄檔案路徑可以使用show variables;命令,在變數名是slow_query_log_file下查詢到具體的日誌檔案路徑。
long_query_time=1:單位是秒。指如果某一條SQL語句執行時間超過1秒,就記錄下來。必須開啟慢查詢日誌了以後,此變數才能使用。
log_error:開啟錯誤日誌。show variables like 'log_error'; 就可以查詢到日誌檔案的路徑。mysql的docker官方映象如果設定別的取值會導致容器無法正常啟動。
(2)從庫配置說明:
change master to
master_host='ip', //Master 伺服器Ip地址,
master_port=3306,//Master 埠號
master_user='zijixie',//Master 使用者名稱
master_password='123456',//使用者密碼
master_log_file='mysql-bin.000004',//Master伺服器產生的日誌要和Master伺服器所配置的相互對應如下如所示的file對應
master_log_pos=1689; //申明從庫從主庫的日誌檔案中哪個位置開始讀取,一般跟從庫的position對應。