343 lines
12 KiB
Markdown
343 lines
12 KiB
Markdown
# Домашнее задание 44
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## Репликация mysql
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Для выполнение задания используется vagrant box Ubuntu 22.04
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### Создание Vagrantfile
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Создадим 2 VM c характеристиками
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- CPU 1
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- RAM 1024Mb
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Готовый [Vagrantfile](Vagrantfile)
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### ansible.yml
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В сценарий для Ansible добавлены следующие действия:
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1. На всех VM устанавливается mysql сервер
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2. На все VM копируется дамп bet.dmp
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3. На VM **mysql-master**
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1. Создается база bet
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2. В базу bet заливается дамп bet.dmp
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3. Настраивается прослушивание сервером mysql для всех интерфейсов в mysqld.cnf
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4. Настравается репликация в mysqld.cnf
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5. Создается пользорватель для репликации
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4. На VM **mysql-slave**
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1. Создается база bet и temp_bet (temp_bet нужна для экспорта только нужных таблиц)
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2. В базу temp_bet заливается дамп bet.dmp
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3. Из базы temp_bet, делается дамп только таблиц bookmaker, competition, market, odds и outcome
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4. Дамп с нужными таблицами заливается в базу bet
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5. База temp_bet удаляется
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6. Настравается репликация в mysqld.cnf, с учетом нужных таблиц
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7. Запускается репликация
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Готовый [ansible.yml](ansible.yml)
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### Проверка
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Запускаем vagrant
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```bash
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alex@ubuntu-pc:~/Документы/44$ vagrant up
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Bringing machine 'mysql-master' up with 'virtualbox' provider...
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Bringing machine 'mysql-slave' up with 'virtualbox' provider...
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==> mysql-master: Importing base box 'ubuntu/jammy64'...
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==> mysql-master: Matching MAC address for NAT networking...
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==> mysql-master: Checking if box 'ubuntu/jammy64' version '20241002.0.0' is up to date...
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==> mysql-master: Setting the name of the VM: 44_mysql-master_1777148561622_1863
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==> mysql-master: Clearing any previously set network interfaces...
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==> mysql-master: Preparing network interfaces based on configuration...
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mysql-master: Adapter 1: nat
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mysql-master: Adapter 2: intnet
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==> mysql-master: Forwarding ports...
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mysql-master: 22 (guest) => 2222 (host) (adapter 1)
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==> mysql-master: Running 'pre-boot' VM customizations...
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==> mysql-master: Booting VM...
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==> mysql-master: Waiting for machine to boot. This may take a few minutes...
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...
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...
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alex@ubuntu-pc:~/Документы/44$ vagrant up
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Bringing machine 'mysql-master' up with 'virtualbox' provider...
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Bringing machine 'mysql-slave' up with 'virtualbox' provider...
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==> mysql-master: Importing base box 'ubuntu/jammy64'...
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==> mysql-master: Matching MAC address for NAT networking...
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==> mysql-master: Checking if box 'ubuntu/jammy64' version '20241002.0.0' is up to date...
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==> mysql-master: Setting the name of the VM: 44_mysql-master_1777148561622_1863
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==> mysql-master: Clearing any previously set network interfaces...
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==> mysql-master: Preparing network interfaces based on configuration...
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mysql-master: Adapter 1: nat
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mysql-master: Adapter 2: intnet
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==> mysql-master: Forwarding ports...
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mysql-master: 22 (guest) => 2222 (host) (adapter 1)
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==> mysql-master: Running 'pre-boot' VM customizations...
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==> mysql-master: Booting VM...
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==> mysql-master: Waiting for machine to boot. This may take a few minutes...
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```
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В начале подключимся к **mysql-slave**, и посмотрим какие таблицы имеет база bet
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```bash
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root@mysql-slave:~# mysql
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Welcome to the MySQL monitor. Commands end with ; or \g.
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Your MySQL connection id is 15
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Server version: 8.0.45-0ubuntu0.22.04.1 (Ubuntu)
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Copyright (c) 2000, 2026, Oracle and/or its affiliates.
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Oracle is a registered trademark of Oracle Corporation and/or its
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affiliates. Other names may be trademarks of their respective
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owners.
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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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mysql> use bet;
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Reading table information for completion of table and column names
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You can turn off this feature to get a quicker startup with -A
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Database changed
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mysql> show tables;
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+---------------+
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| Tables_in_bet |
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+---------------+
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| bookmaker |
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| competition |
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| market |
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| odds |
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| outcome |
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+---------------+
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5 rows in set (0.01 sec)
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```
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Видим, что база имеет только те таблицы, которые нужно реплицировать по заданию.
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Посмотрим текущие состояние репликации.
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```bash
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mysql> show slave status\G
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*************************** 1. row ***************************
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Slave_IO_State: Waiting for source to send event
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Master_Host: 192.168.50.10
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Master_User: replication
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Master_Port: 3306
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Connect_Retry: 60
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Master_Log_File: binlog.000004
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Read_Master_Log_Pos: 157
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Relay_Log_File: mysql-slave-relay-bin.000002
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Relay_Log_Pos: 367
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Relay_Master_Log_File: binlog.000004
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Slave_IO_Running: Yes
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Slave_SQL_Running: Yes
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Replicate_Do_DB:
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Replicate_Ignore_DB:
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Replicate_Do_Table: bet.bookmaker,bet.competition,bet.market,bet.odds,bet.outcome
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Replicate_Ignore_Table:
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Replicate_Wild_Do_Table:
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Replicate_Wild_Ignore_Table:
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Last_Errno: 0
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Last_Error:
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Skip_Counter: 0
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Exec_Master_Log_Pos: 157
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Relay_Log_Space: 583
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Until_Condition: None
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Until_Log_File:
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Until_Log_Pos: 0
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Master_SSL_Allowed: No
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Master_SSL_CA_File:
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Master_SSL_CA_Path:
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Master_SSL_Cert:
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Master_SSL_Cipher:
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Master_SSL_Key:
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Seconds_Behind_Master: 0
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Master_SSL_Verify_Server_Cert: No
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Last_IO_Errno: 0
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Last_IO_Error:
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Last_SQL_Errno: 0
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Last_SQL_Error:
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Replicate_Ignore_Server_Ids:
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Master_Server_Id: 1
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Master_UUID: 3d1b6963-40ea-11f1-bd8d-02a0d264f128
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Master_Info_File: mysql.slave_master_info
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SQL_Delay: 0
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SQL_Remaining_Delay: NULL
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Slave_SQL_Running_State: Replica has read all relay log; waiting for more updates
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Master_Retry_Count: 86400
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Master_Bind:
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Last_IO_Error_Timestamp:
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Last_SQL_Error_Timestamp:
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Master_SSL_Crl:
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Master_SSL_Crlpath:
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Retrieved_Gtid_Set:
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Executed_Gtid_Set:
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Auto_Position: 1
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Replicate_Rewrite_DB:
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Channel_Name:
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Master_TLS_Version:
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Master_public_key_path:
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Get_master_public_key: 1
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Network_Namespace:
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1 row in set, 1 warning (0.00 sec)
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```
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В **Replicate_Do_Table** видим какие именно таблицы и из какой базы будут реплицироваться.
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Подключимся к **mysql-master**, и добавим новую запись в таблицу **bookmaker**.
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Посмотрим, что на текущий момент содержиться в таблице
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```bash
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root@mysql-master:~# mysql
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Welcome to the MySQL monitor. Commands end with ; or \g.
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Your MySQL connection id is 8
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Server version: 8.0.45-0ubuntu0.22.04.1 (Ubuntu)
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Copyright (c) 2000, 2026, Oracle and/or its affiliates.
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Oracle is a registered trademark of Oracle Corporation and/or its
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affiliates. Other names may be trademarks of their respective
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owners.
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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
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mysql> select * from bet.bookmaker;
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+----+----------------+
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| id | bookmaker_name |
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+----+----------------+
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| 4 | betway |
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| 5 | bwin |
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| 6 | ladbrokes |
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| 3 | unibet |
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+----+----------------+
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4 rows in set (0.00 sec)
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```
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Добавим новую запись
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```bash
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mysql> insert into bet.bookmaker (bookmaker_name) values ('my_new_bookmaker_name');
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Query OK, 1 row affected (0.01 sec)
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```
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Проверим Executed_Gtid_Set
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```bash
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mysql> show master status;
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+---------------+----------+--------------+------------------+----------------------------------------+
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| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
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+---------------+----------+--------------+------------------+----------------------------------------+
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| binlog.000004 | 463 | | | 3d1b6963-40ea-11f1-bd8d-02a0d264f128:1 |
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+---------------+----------+--------------+------------------+----------------------------------------+
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1 row in set (0.00 sec)
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```
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Опять переключимся на **mysql-slave**, и проверим, как прошла репликация.
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```bash
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mysql> select * from bet.bookmaker;
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+----+-----------------------+
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| id | bookmaker_name |
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+----+-----------------------+
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| 4 | betway |
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| 5 | bwin |
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| 6 | ladbrokes |
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| 7 | my_new_bookmaker_name |
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| 3 | unibet |
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+----+-----------------------+
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5 rows in set (0.00 sec)
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```
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Видим, что в таблице bookmaker на **mysql-slave** появилась запись, которцю мы создали на **mysql-master**
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Еще проверим статус, на наличе ошибок
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```bash
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mysql> show slave status\G
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*************************** 1. row ***************************
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Slave_IO_State: Waiting for source to send event
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Master_Host: 192.168.50.10
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Master_User: replication
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Master_Port: 3306
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Connect_Retry: 60
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Master_Log_File: binlog.000004
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Read_Master_Log_Pos: 463
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Relay_Log_File: mysql-slave-relay-bin.000002
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Relay_Log_Pos: 673
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Relay_Master_Log_File: binlog.000004
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Slave_IO_Running: Yes
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Slave_SQL_Running: Yes
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Replicate_Do_DB:
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Replicate_Ignore_DB:
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Replicate_Do_Table: bet.bookmaker,bet.competition,bet.market,bet.odds,bet.outcome
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Replicate_Ignore_Table:
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Replicate_Wild_Do_Table:
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Replicate_Wild_Ignore_Table:
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Last_Errno: 0
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Last_Error:
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Skip_Counter: 0
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Exec_Master_Log_Pos: 463
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Relay_Log_Space: 889
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Until_Condition: None
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Until_Log_File:
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Until_Log_Pos: 0
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Master_SSL_Allowed: No
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Master_SSL_CA_File:
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Master_SSL_CA_Path:
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Master_SSL_Cert:
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Master_SSL_Cipher:
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Master_SSL_Key:
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Seconds_Behind_Master: 0
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Master_SSL_Verify_Server_Cert: No
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Last_IO_Errno: 0
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Last_IO_Error:
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Last_SQL_Errno: 0
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Last_SQL_Error:
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Replicate_Ignore_Server_Ids:
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Master_Server_Id: 1
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Master_UUID: 3d1b6963-40ea-11f1-bd8d-02a0d264f128
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Master_Info_File: mysql.slave_master_info
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SQL_Delay: 0
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SQL_Remaining_Delay: NULL
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Slave_SQL_Running_State: Replica has read all relay log; waiting for more updates
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Master_Retry_Count: 86400
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Master_Bind:
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Last_IO_Error_Timestamp:
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Last_SQL_Error_Timestamp:
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Master_SSL_Crl:
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Master_SSL_Crlpath:
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Retrieved_Gtid_Set: 3d1b6963-40ea-11f1-bd8d-02a0d264f128:1
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Executed_Gtid_Set: 3d1b6963-40ea-11f1-bd8d-02a0d264f128:1
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Auto_Position: 1
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Replicate_Rewrite_DB:
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Channel_Name:
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Master_TLS_Version:
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Master_public_key_path:
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Get_master_public_key: 1
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Network_Namespace:
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1 row in set, 1 warning (0.00 sec)
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```
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Ошибок нет! Репликация настроена.
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Задание выполнено! |