主机1 MYSQL配置：
/etc/my.cnf :
server_id = 41
log_bin=mysql-bin
binlog-do-db =dbb1000
log_bin_trust_function_creators=TRUE
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
binlog-ignore-db=performance_schema
binlog-ignore-db=test
给从库添加复制用户：
grant replication slave on *.* to ‘backup‘@‘172.16.3.120‘ identified by ‘[email protected]‘;
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从库配置：
/etc/my.cnf:
server-id=42
replicate-do-db=dbb1000
max_connections=2000
lower_case_table_names=1
wait_timeout=31536000
interactive_timeout=31536000
relay-log=/data/mysql/logs/mysql-relay-bin.log
expire_logs_days=10
##修改从库的主库指向
change master to
master_host=‘172.16.0.18‘,
master_user=‘backup‘,
master_password=‘[email protected]‘,
master_log_file=‘mysql-bin.000002‘,
master_log_pos=120;
#这个配置添加上就会自动保存住，下次重启不用重新配置
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#这里的，是主库挂掉了，主库与从库数据不一致的时候，当然我们有办法让他们一致，重建最省事
重建后涉及到日志问题，既然两边数据一致了，我们就省事点，直接重置重启完事，提高效率
reset master;
reset slave;
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原文地址：https://www.cnblogs.com/what999/p/12066824.html