十九、02-搭建mysql服务器，并实现主从复制

搭建mysql服务器，并实现主从复制

1、环境配置

2、安装mariadb-server

node01# yum install -y mariadb-server
node02# yum install -y mariadb-server

3、node01修改配置文件，启动服务

node01# vim /etc/my.cnf.d/server.cnf
[mysqld]
innodb_file_per_table=ON
skip_name_resolve=ON
server_id=1
log-bin=master-log

node01#  systemctl start mariadb-server
node01# systemctl  enable mariadb-server 

node01# mysql_secure_installation (初始化数据库)

[root@node01 ~]# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 5
Server version: 5.5.60-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> show master status;
+-------------------+----------+--------------+------------------+
| File              | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master-log.000004 |      245 |              |                  |
+-------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

4、在node02配置mariadb配置文件，并启动服务

node02# vim /etc/my.cnf.d/server.cnf
[mysqld]
innodb_file_per_table=ON
skip_name_resolve=ON

server_id=11
#log-bin=master-log
relay_log=relay-log

node02#  systemctl start mariadb-server
node02# systemctl  enable mariadb-server 

node02# mysql_secure_installation (初始化数据库)

5、进入node02的数据库，配置salve

[root@node02 ~]# mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 6
Server version: 5.5.60-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST='192.168.85.128',MASTER_USER='repluser',MASTER_PASSWORD='replpass',MASTER_PORT=3306,MASTER_LOG_FILE='master-log.000004',MASTER_LOG_POS=1739;
MariaDB [(none)]> start slave;
MariaDB [(none)]> MariaDB [(none)]> show slave status \G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.85.128
                  Master_User: repluser
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: master-log.000004
          Read_Master_Log_Pos: 245
               Relay_Log_File: relay-log.000005
                Relay_Log_Pos: 530
        Relay_Master_Log_File: master-log.000004
             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: 245
              Relay_Log_Space: 1103
              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
1 row in set (0.00 sec)

6、验证

node01主机

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| hellodb            |
| mydb               |
| mysql              |
| performance_schema |
+--------------------+
5 rows in set (0.05 sec)

node02主机

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| hellodb            |
| mydb               |
| mysql              |
| performance_schema |
+--------------------+
5 rows in set (0.03 sec)

node01主机

MariaDB [(none)]> create database test;
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| hellodb            |
| mydb               |
| mysql              |
| performance_schema |
| test               |
+--------------------+
6 rows in set (0.00 sec)

node02主机

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| hellodb            |
| mydb               |
| mysql              |
| performance_schema |
| test               |
+--------------------+
6 rows in set (0.00 sec)

到此，mysql主从复制配置完成。