mysql5.7 遷移以及從庫提升為主庫
阿新 • • 發佈:2017-11-29
mysqlCHANGE MASTER TO
MASTER_HOST='10.10.30.34',
MASTER_PORT=3306,
MASTER_USER='slave',
MASTER_PASSWORD='slave',
MASTER_LOG_FILE='mysql-bin.000148',
MASTER_LOG_POS=154;
從數據庫變為主庫
stop slave;
reset slave;
reset master;
從庫變為剛才的主庫(由從庫變為主庫的數據庫)
vim /etc/my.cnf
log-bin=mysql-bin #並重啟數據庫,主庫開啟binlog日誌
主庫操作:show master status
主庫操作:scp -r /var/lib/mysql/* 10.10.50.34:/var/lib/mysql/
從庫:chown -R mysql.mysql /var/lib/mysql/
從庫:systemctl restart mysqld
CHANGE MASTER TO
MASTER_HOST='172.16.1.51',
MASTER_PORT=3306,
MASTER_USER='rep',
MASTER_PASSWORD='123456',
MASTER_LOG_FILE='mysql-bin.000001',
MASTER_LOG_POS=335;
進入數據:start slave;
中間報錯:
1.IO進程一直處於connnecting中
slave 用戶的密碼寫錯
2.show slave status;報錯
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
解決辦法:
主庫:flush logs;
從庫:
stop slave;
CHANGE MASTER TO MASTER_LOG_FILE='mysqld-bin.000011',MASTER_LOG_POS=106;
start slave;
mysql5.7 遷移以及從庫提升為主庫