MySQL主从复制,单台服务器上实施
MySQL主从复制,单台服务器上实施
现在公司向在一台服务器上做主从复制,现在了解到的是需要安装多个mysql不同的服务,才可以,我现在 在现有单实例数据库下,分了不同的端口以下所示红色部分;
[root@mysql ~]# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:1001 0.0.0.0:* LISTEN 2515/rpc.statd
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 2483/portmap
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 2750/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 3056/sendmail: acce
tcp 0 0 :::3306 :::* LISTEN 4025/mysqld
tcp 0 0 :::3307 :::* LISTEN 17423/mysqld
tcp 0 0 :::3308 :::* LISTEN 17388/mysqld
tcp 0 0 :::3309 :::* LISTEN 20371/mysqld
tcp 0 0 :::22 :::* LISTEN 2741/sshd
udp 0 0 0.0.0.0:995 0.0.0.0:* 2515/rpc.statd
udp 0 0 0.0.0.0:998 0.0.0.0:* 2515/rpc.statd
udp 0 0 0.0.0.0:42601 0.0.0.0:* 3204/avahi-daemon:
udp 0 0 0.0.0.0:5353 0.0.0.0:* 3204/avahi-daemon:
udp 0 0 0.0.0.0:111 0.0.0.0:* 2483/portmap
udp 0 0 0.0.0.0:631 0.0.0.0:* 2750/cupsd
udp 0 0 :::5353 :::* 3204/avahi-daemon:
udp 0 0 :::59254 :::* 3204/avahi-daemon:
[root@mysql mysql]# mysqld_multi --defaults-extra-file=/etc/mysqld_multi.cnf report
Reporting MySQL servers
MySQL server from group: mysqld2 is running
MySQL server from group: mysqld3 is running
MySQL server from group: mysqld4 is running
[root@mysql mysql]# lsof -i:3308
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
mysqld 17388 mysql 11u IPv6 45429 TCP *:tns-server (LISTEN)
[root@mysql mysql]# lsof -i:3307
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
mysqld 17423 mysql 11u IPv6 45479 TCP *psession-prxy (LISTEN)
[root@mysql mysql]# lsof -i:3309
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
mysqld 20371 mysql 11u IPv6 47851 TCP *:tns-adv (LISTEN)
[root@mysql mysql]# lsof -i:3306
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
mysqld 4025 mysql 11u IPv6 16575 TCP *:mysql (LISTEN)
[root@mysql mysql]#
[root@mysql ~]#
在以上服务都启动正常的情况下,配置主从,我没有调整IO的线程,不知道在不同端口见做主从复制关系,以下是我配置最后遇到的错误,请绿林好汉帮忙看看啊,拍砖。。。
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.1.10
Master_User: slave001
Master_Port: 3308
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 1027
Relay_Log_File: localhost3308-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: No
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: 1027
Relay_Log_Space: 107
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: 1593
Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server ids; these ids must be different for replication to work (or the --replicate-same-server-id option must be used on slave but this does not always make sense; please check the manual before using it).
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
1 row in set (0.00 sec)
ERROR:
No query specified
mysql>
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