mysql 主从复制 Slave_IO_Running 进程为no ？
主从复制失败，发现Slave_IO_Running这个进程一直是NO
查看错误日志，得到信息是slave用户无法连接到master服务器上
position 98, relay log './mysqld-relay-bin.000001' position: 4
150921 4:11:08 [ERROR] Slave I/O thread: error connecting to master '[email protected]:3306': Error: 'Host '192.168.126.132' is not allowed to connect to this MySQL server' errno: 1130 retry-time: 60 retries: 86400
150921 5:06:57 [Note] Slave I/O thread killed while connecting to master
150921 5:06:57 [Note] Slave I/O thread exiting, read up to log 'binlog_name.000001', position 98
150921 5:06:57 [Note] Error reading relay log event: slave SQL thread was killed
但是我在slave主机，可以直接使用repl用户连接到master服务器上查询相关的表，为什么说我不允许连接这个机器呢？
mysql_replication mysql mysql优化
看海的小羽
9 years, 10 months ago
Answers
我后来解决了
1.应该在slave机器上使用change master to 写上 master机器的ip，我却写了slave自己的ip地址
2.当我修改完ip后，发现报一个The slave I/O thread stops because master and slave have equal MySQL server ids（slave和master使用了公共的一个server-id号）
查询了一下my.cnf文件，发现原来默认已经分配了relication的server-id号
# Replication Master Server (default)
# binary logging is required for replication
# log-bin=mysql-bin
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 2
而这个默认的server_id号，把我上面的server_id号给覆盖了，导致了两个server_id号相同了
请勿拍打喂食
answered 9 years, 10 months ago