linux mysql 单机主从_MariaDB单机双实例主从复制
MariaDB其實和mysql一樣，非有啥不一樣那就是名字不一樣~.~!
開始～上篇實驗是MariaDB的單機多實例安裝
雙實例端口3307主庫，3308從庫
3307主實例的mysqld配置
[mysqld2]
port=3307
socket=/tmp/mysql3307.sock
pid-file=/tmp/mysql3307.pid
max_allowed_packet=1M
net_buffer_length=2k
table_open_cache=4
sort_buffer_size=64k
thread_stack=128k
basedir=/usr/local/mysql
datadir=/data/mydata2
server-id=244
log-bin = master3307-bin
log-bin-index = master3307-bin.index
thread_concurrency=4
innodb_file_per_table = 1
#mysql_pwd='teleframe'
3308從實例的mysqld配置
[mysqld3]
port=3308
socket=/tmp/mysql3308.sock
pid-file=/tmp/mysql3308.pid
max_allowed_packet=1M
net_buffer_length=2k
table_open_cache=4
sort_buffer_size=64k
thread_stack=128k
basedir=/usr/local/mysql
datadir=/data/mydata3
innodb_file_per_table = 1
server-id=245
log-bin=mysql3308-bin
relay-log = relay-log
relay-log-index = relay-log-index
thread_concurrency=4
read-only = on
開始主從配置
步驟1、連接到主庫上授權一個REPLICATION SLAVE 帳號，并且刷新授權表
[root@e3 mysql]# mysql -uroot -h127.0.0.1 -P3307 -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 8
Server version: 10.0.15-MariaDB-log Source distribution
Copyright (c) 2000, 2014, Oracle, SkySQL Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
| test1 |
+--------------------+
5 rows in set (0.00 sec)
MariaDB [(none)]> grant replication slave on *.* to 'repl'@'192.168.0.%' identified by 'repl';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show master status;
+-----------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-----------------------+----------+--------------+------------------+
| master3307-bin.000005 | 632 | | |
+-----------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
MariaDB [(none)]>
2、連接到從庫上指定主庫，啟動slave
[root@e3 ~]# mysql -uroot -p'teleframe' -h127.0.0.1 -P3308
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 3
Server version: 10.0.15-MariaDB-log Source distribution
Copyright (c) 2000, 2014, Oracle, SkySQL Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> change master to master_host='192.168.0.244',master_user='repl',master_password='repl',master_port=3307,master_log_file='master3307-bin.000005',master_log_pos=632;
ERROR 1201 (HY000): Could not initialize master info structure for ''; more error messages can be found in the MariaDB error log #我這報錯了，如果你跟我一樣報錯就執行下面的命令
MariaDB [(none)]> reset slave;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> change master to master_host='192.168.0.244',master_user='repl',master_password='repl',master_port=3307,;
Query OK, 0 rows affected (0.22 sec) #好了現在連接上了 master_log_file='master3307-bin.000005',master_log_pos=632 表示從主服務器那個二進制日志文件開始復制因為這是復制授權信息，所以沒必要復制，在主服務器上可以查看show master status; 查看內容show binglog events in 'master-bin.000001';
MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.0.244
Master_User: repl
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: master3307-bin.000005
Read_Master_Log_Pos: 632
Relay_Log_File: relay-log.000002
Relay_Log_Pos: 4
Relay_Master_Log_File: master3307-bin.000005
Slave_IO_Running: No # 從服務器有沒有正常工作主要是看這個值是否YES
Slave_SQL_Running: No #
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: 632
Relay_Log_Space: 248
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: NULL
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: 0
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
1 row in set (0.00 sec)
MariaDB [(none)]> start slave; #好啟動slave
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.244
Master_User: repl
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: master3307-bin.000005
Read_Master_Log_Pos: 632
Relay_Log_File: relay-log.000003
Relay_Log_Pos: 540
Relay_Master_Log_File: master3307-bin.000005
Slave_IO_Running: Yes #表示從服務器正常工作了
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: 632
Relay_Log_Space: 831
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: 244
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
來測試！
在主的上面創建一個庫看從的是否可以復制到
主上創建
MariaDB [(none)]> create database kcwtest;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| kcwtest |
| mysql |
| performance_schema |
| test |
| test1 |
+--------------------+
6 rows in set (0.00 sec)
從上查看
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| kcwtest |
| mysql |
| performance_schema |
| test |
+--------------------+
5 rows in set (0.00 sec)
可以復制！這樣就實現單機實例復制，我做的3個實例，3306端口給默認的用，3307，3308端口做主從復制。
總結
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