[리눅스] MySQL Replication 구성(MySQL 복제)

MySQL Replication 구성(MySQL 복제)

MySQL 환경 설정(my.cnf)

Hostname	node1	node2
Role	master	slave
my.cnf	### my.cnf(/usr/local/mysql/my.cnf) [mysqld] bind-address = 0.0.0.0 port = 3306 user = mysql basedir = /usr/local/mysql datadir = /usr/local/mysql/data socket = /tmp/mysql.sock pid-file = /var/run/mysqld/mysqld.pid log-error = /usr/local/mysql/data/error.log log-error-verbosity = 3 symbolic-links = 0 explicit_defaults_for_timestamp = 1 server-id = 1 log-bin = mysql-bin binlog-format = ROW expire_logs_days = 2 #skip-grant-tables [client] port = 3306 socket = /tmp/mysql.sock	### my.cnf(/usr/local/mysql/my.cnf) [mysqld] bind-address = 0.0.0.0 port = 3306 user = mysql basedir = /usr/local/mysql datadir = /usr/local/mysql/data socket = /tmp/mysql.sock pid-file = /var/run/mysqld/mysqld.pid log-error = /usr/local/mysql/data/error.log log-error-verbosity = 3 symbolic-links = 0 explicit_defaults_for_timestamp = 1 server-id = 2 log-bin = mysql-bin binlog-format = ROW expire_logs_days = 2 relay_log = relay-bin log_slave_updates = 1 read_only = 1 #skip-grant-tables [client] port = 3306 socket = /tmp/mysql.sock
Start	mysqld_safe --defaults-file=/usr/local/mysql/my.cnf &
Shutdown	mysqladmin -u root shutdown --socket /tmp/mysql.sock

마스터 서버

• bin-log(File) 파일 및 Position 확인

mysql -h localhost -uroot -p'mysqlpassword' -e "show master status\G" | egrep 'File|Position'

$ mysql -h localhost -uroot -p'mysqlpassword' -e "show master status\G" | egrep 'File|Position'
mysql: [Warning] Using a password on the command line interface can be insecure.
             File: mysql-bin.000007
         Position: 154

슬레이브 서버

• 복제 중지

mysql -h localhost -uroot -p'mysqlpassword' -e "stop slave"

• 복제 설정을 재설정

mysql -h localhost -uroot -p'mysqlpassword' -e "reset slave"

• 슬레이브 복제 설정

mysql -h localhost -uroot -p'mysqlpassword' -e "
CHANGE MASTER TO
MASTER_HOST='192.168.56.101',
MASTER_USER='replication_user',
MASTER_PASSWORD='password',
MASTER_LOG_FILE='mysql-bin.000007',
MASTER_LOG_POS=154;
"

$ mysql -h localhost -uroot -p'mysqlpassword' -e "
CHANGE MASTER TO
MASTER_HOST='192.168.56.101',
MASTER_USER='replication_user',
MASTER_PASSWORD='password',
MASTER_LOG_FILE='mysql-bin.000007',
MASTER_LOG_POS=154;
"
mysql: [Warning] Using a password on the command line interface can be insecure.

• 슬레이브 서버 다시 시작

mysql -h localhost -uroot -p'mysqlpassword' -e "start slave"

$ mysql -h localhost -uroot -p'mysqlpassword' -e "start slave"
mysql: [Warning] Using a password on the command line interface can be insecure.

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• 슬레이브 상태 확인

mysql -hlocalhost -uroot -p'mysqlpassword' -e "show slave status\G" | egrep 'Slave_IO_Running|Slave_SQL_Running|Seconds_Behind_Master'

$ mysql -hlocalhost -uroot -p'mysqlpassword' -e "show slave status\G" | egrep 'Slave_IO_Running|Slave_SQL_Running|Seconds_Behind_Master'
mysql: [Warning] Using a password on the command line interface can be insecure.
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
        Seconds_Behind_Master: 0
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates

mysql -hlocalhost -uroot -p'mysqlpassword' -e "show slave status\G"

$ mysql -hlocalhost -uroot -p'mysqlpassword' -e "show slave status\G"
mysql: [Warning] Using a password on the command line interface can be insecure.
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.56.101
                  Master_User: replication_user
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000007
          Read_Master_Log_Pos: 154
               Relay_Log_File: relay-bin.000002
                Relay_Log_Pos: 320
        Relay_Master_Log_File: mysql-bin.000007
             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: 154
              Relay_Log_Space: 521
              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: 1e320772-f6c4-11ed-a93d-0800278c2c47
             Master_Info_File: /usr/local/mysql/data/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:

마스터 서버

• 슬레이브 호스트 확인

mysql -h localhost -uroot -p'mysqlpassword' -e "SHOW SLAVE HOSTS"

$ mysql -h localhost -uroot -p'mysqlpassword' -e "SHOW SLAVE HOSTS"
mysql: [Warning] Using a password on the command line interface can be insecure.
+-----------+------+------+-----------+--------------------------------------+
| Server_id | Host | Port | Master_id | Slave_UUID                           |
+-----------+------+------+-----------+--------------------------------------+
|         3 |      | 3306 |         1 | 8802cba8-f8ab-11ed-aa0c-080027dcd0c8 |
|         2 |      | 3306 |         1 | 81a1c980-f8ab-11ed-9f7e-0800273d1990 |
+-----------+------+------+-----------+--------------------------------------+