# Домашнее задание 44 ## Репликация mysql Для выполнение задания используется vagrant box Ubuntu 22.04 ### Создание Vagrantfile Создадим 2 VM c характеристиками - CPU 1 - RAM 1024Mb Готовый [Vagrantfile](Vagrantfile) ### ansible.yml В сценарий для Ansible добавлены следующие действия: 1. На всех VM устанавливается mysql сервер 2. На все VM копируется дамп bet.dmp 3. На VM **mysql-master** 1. Создается база bet 2. В базу bet заливается дамп bet.dmp 3. Настраивается прослушивание сервером mysql для всех интерфейсов в mysqld.cnf 4. Настравается репликация в mysqld.cnf 5. Создается пользорватель для репликации 4. На VM **mysql-slave** 1. Создается база bet и temp_bet (temp_bet нужна для экспорта только нужных таблиц) 2. В базу temp_bet заливается дамп bet.dmp 3. Из базы temp_bet, делается дамп только таблиц bookmaker, competition, market, odds и outcome 4. Дамп с нужными таблицами заливается в базу bet 5. База temp_bet удаляется 6. Настравается репликация в mysqld.cnf, с учетом нужных таблиц 7. Запускается репликация Готовый [ansible.yml](ansible.yml) ### Проверка Запускаем vagrant ```bash alex@ubuntu-pc:~/Документы/44$ vagrant up Bringing machine 'mysql-master' up with 'virtualbox' provider... Bringing machine 'mysql-slave' up with 'virtualbox' provider... ==> mysql-master: Importing base box 'ubuntu/jammy64'... ==> mysql-master: Matching MAC address for NAT networking... ==> mysql-master: Checking if box 'ubuntu/jammy64' version '20241002.0.0' is up to date... ==> mysql-master: Setting the name of the VM: 44_mysql-master_1777148561622_1863 ==> mysql-master: Clearing any previously set network interfaces... ==> mysql-master: Preparing network interfaces based on configuration... mysql-master: Adapter 1: nat mysql-master: Adapter 2: intnet ==> mysql-master: Forwarding ports... mysql-master: 22 (guest) => 2222 (host) (adapter 1) ==> mysql-master: Running 'pre-boot' VM customizations... ==> mysql-master: Booting VM... ==> mysql-master: Waiting for machine to boot. This may take a few minutes... ... ... alex@ubuntu-pc:~/Документы/44$ vagrant up Bringing machine 'mysql-master' up with 'virtualbox' provider... Bringing machine 'mysql-slave' up with 'virtualbox' provider... ==> mysql-master: Importing base box 'ubuntu/jammy64'... ==> mysql-master: Matching MAC address for NAT networking... ==> mysql-master: Checking if box 'ubuntu/jammy64' version '20241002.0.0' is up to date... ==> mysql-master: Setting the name of the VM: 44_mysql-master_1777148561622_1863 ==> mysql-master: Clearing any previously set network interfaces... ==> mysql-master: Preparing network interfaces based on configuration... mysql-master: Adapter 1: nat mysql-master: Adapter 2: intnet ==> mysql-master: Forwarding ports... mysql-master: 22 (guest) => 2222 (host) (adapter 1) ==> mysql-master: Running 'pre-boot' VM customizations... ==> mysql-master: Booting VM... ==> mysql-master: Waiting for machine to boot. This may take a few minutes... ``` В начале подключимся к **mysql-slave**, и посмотрим какие таблицы имеет база bet ```bash root@mysql-slave:~# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 15 Server version: 8.0.45-0ubuntu0.22.04.1 (Ubuntu) Copyright (c) 2000, 2026, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> use bet; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +---------------+ | Tables_in_bet | +---------------+ | bookmaker | | competition | | market | | odds | | outcome | +---------------+ 5 rows in set (0.01 sec) ``` Видим, что база имеет только те таблицы, которые нужно реплицировать по заданию. Посмотрим текущие состояние репликации. ```bash mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for source to send event Master_Host: 192.168.50.10 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: binlog.000004 Read_Master_Log_Pos: 157 Relay_Log_File: mysql-slave-relay-bin.000002 Relay_Log_Pos: 367 Relay_Master_Log_File: binlog.000004 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: bet.bookmaker,bet.competition,bet.market,bet.odds,bet.outcome Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 157 Relay_Log_Space: 583 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: 1 Master_UUID: 3d1b6963-40ea-11f1-bd8d-02a0d264f128 Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Replica 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: 1 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 1 Network_Namespace: 1 row in set, 1 warning (0.00 sec) ``` В **Replicate_Do_Table** видим какие именно таблицы и из какой базы будут реплицироваться. Подключимся к **mysql-master**, и добавим новую запись в таблицу **bookmaker**. Посмотрим, что на текущий момент содержиться в таблице ```bash root@mysql-master:~# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 8 Server version: 8.0.45-0ubuntu0.22.04.1 (Ubuntu) Copyright (c) 2000, 2026, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> select * from bet.bookmaker; +----+----------------+ | id | bookmaker_name | +----+----------------+ | 4 | betway | | 5 | bwin | | 6 | ladbrokes | | 3 | unibet | +----+----------------+ 4 rows in set (0.00 sec) ``` Добавим новую запись ```bash mysql> insert into bet.bookmaker (bookmaker_name) values ('my_new_bookmaker_name'); Query OK, 1 row affected (0.01 sec) ``` Проверим Executed_Gtid_Set ```bash mysql> show master status; +---------------+----------+--------------+------------------+----------------------------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +---------------+----------+--------------+------------------+----------------------------------------+ | binlog.000004 | 463 | | | 3d1b6963-40ea-11f1-bd8d-02a0d264f128:1 | +---------------+----------+--------------+------------------+----------------------------------------+ 1 row in set (0.00 sec) ``` Опять переключимся на **mysql-slave**, и проверим, как прошла репликация. ```bash mysql> select * from bet.bookmaker; +----+-----------------------+ | id | bookmaker_name | +----+-----------------------+ | 4 | betway | | 5 | bwin | | 6 | ladbrokes | | 7 | my_new_bookmaker_name | | 3 | unibet | +----+-----------------------+ 5 rows in set (0.00 sec) ``` Видим, что в таблице bookmaker на **mysql-slave** появилась запись, которцю мы создали на **mysql-master** Еще проверим статус, на наличе ошибок ```bash mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for source to send event Master_Host: 192.168.50.10 Master_User: replication Master_Port: 3306 Connect_Retry: 60 Master_Log_File: binlog.000004 Read_Master_Log_Pos: 463 Relay_Log_File: mysql-slave-relay-bin.000002 Relay_Log_Pos: 673 Relay_Master_Log_File: binlog.000004 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: bet.bookmaker,bet.competition,bet.market,bet.odds,bet.outcome Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 463 Relay_Log_Space: 889 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: 1 Master_UUID: 3d1b6963-40ea-11f1-bd8d-02a0d264f128 Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Replica 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: 3d1b6963-40ea-11f1-bd8d-02a0d264f128:1 Executed_Gtid_Set: 3d1b6963-40ea-11f1-bd8d-02a0d264f128:1 Auto_Position: 1 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 1 Network_Namespace: 1 row in set, 1 warning (0.00 sec) ``` Ошибок нет! Репликация настроена. Задание выполнено!