中途出了點問題,搞的鬱悶一天的問題就是 change master 語句,好了下面就開始講正題吧。
linux OS: ubuntu server 8.04.1
software: mysql5.0.51
mysql1 : 192.168.6.4 //master
mysql2 : 192.168.6.5 //slave
安裝步驟
1. 分別在兩臺機器上安裝mysql-server
shell > apt-get install mysql-server
2.修改 mysql1 master 的配置檔案
vim /etc/mysql/my.cnf
找到 bind-address = 127.0.0.1
改為 bind-address = 0.0.0.0
找到
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
去掉 註釋符號
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
default-character-set = utf8 #新加上的為了保持編碼一至防止出錯
3.改好後儲存退出,然後建立一個slave伺服器的使用者賬號
root@msyql1:/# mysql -uroot -p
mysql> grant replication slave,replication client on *.* to ludy@`192.168.6.5` identified by `ypmwbg`;
mysql > grant replication slave on *.* to ludy@192.168.6.5 identified by `ypmwbg`; //給予許可權
到這裡要注意了,我的兩臺資料庫都是空的.
重啟mysql服務
4.修改 mysql2 伺服器slave的 my.cnf配置檔案
找到 bind-address = 127.0.0.1
替換 bind-address = 0.0.0.0
找到
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
把 註釋符號去掉 改為如下
server-id = 2
master-host = 192.168.6.4
master-user = ludy
master-password = ypmwbg
master-port = 3306
log_bin = /var/log/mysql/mysql-bin.log
log-slave-updates
skip-slave-start
配置完後 重新啟動mysql
然後進入 mysql1 master 伺服器
root@msyql:~# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 9
Server version: 5.0.51a-3ubuntu5.4-log (Ubuntu)
Type `help;` or `h` for help. Type `c` to clear the buffer.
mysql> show master status;
+——————+———-+————–+——————+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000001 | 98 | | |
+——————+———-+————–+——————+
1 row in set (0.00 sec)
記錄下來以後 進入 mysql2 slave mysql
root@msyql2:~# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 9
Server version: 5.0.51a-3ubuntu5.4-log (Ubuntu)
Type `help;` or `h` for help. Type `c` to clear the buffer.
mysql> change master to master_log_file=`mysql-bin.000001`, master_log_pos=98;
//這個地方就是記錄下來的 mysql1 master 的資料
mysql > start slave; //啟動slave 服務
mysql > show slave statusG
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.6.4
Master_User: ludy
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 181
Relay_Log_File: mysqld-relay-bin.000003
Relay_Log_Pos: 235
Relay_Master_Log_File: mysql-bin.000001
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: 181
Relay_Log_Space: 235
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
1 row in set (0.01 sec)
哈哈 Slave_IO_Running: Yes
Slave_SQL_Running: Yes
說明啟動成功
然後在 master 新建 一個資料庫看看
root@msyq1l:/# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 8
Server version: 5.0.51a-3ubuntu5.4-log (Ubuntu)
Type `help;` or `h` for help. Type `c` to clear the buffer.
mysql> create database chenggong;
Query OK, 1 row affected (0.00 sec)
在 salve 檢視看是否同步
mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| chenggong | //同步了哈哈 ~
| mysql |
| test |
+——————–+
4 rows in set (0.01 sec)
好了就寫這麼多,如果你作 master-slave 的時候 你的master 資料裡有資料那麼
你必須 在 我寫的 第三步與第四步中加入一下步驟:
接 上文 第三步
進入master資料庫的Mysql控制檯執行
mysql >FLUSH TABLES WITH READ LOCK; //鎖表
然後從新開啟一個 終端 拷貝 master 的所有的資料到 slave 伺服器覆蓋
讀取 master 二進位制檔案與偏移量
mysql > show master status;
同樣 要記錄下 file 與 position 的值
然後解鎖
mysql > unlock tables;