(一)
登录test-mysql-1
[mysqld_multi]
mysqld = /usr/bin/mysqld_safe
mysqladmin = /usr/bin/mysqladmin
user = multi_admin
password = my_password
[mysqld3306]
datadir=/data/3306/
socket=/data/3306/mysql.sock
log-error=/data/3306/mysqld.log
pid-file=/data/3306/mysqld.pid
server-id = 1
log-bin=mysql-bin
replicate-ignore-db=mysql
replicate-do-db=test
slave-skip-errors=all
auto_increment_offset = 1
auto_increment_increment = 2
mysqld_multi stop 3306
mysqld_multi start 3306
grant replication slave on *.* to 'rep'@192.168.131.130 identified by 'chenshifei';
flush table with read lock;
show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 336 | | | |
+------------------+----------+--------------+------------------+-------------------+
登录test-mysql-2
change master to master_host='192.168.131.129', master_user='rep', master_password='chenshifei', master_port=3306, master_log_file='mysql-bin.000001', master_log_pos=336;
start slave;
登录test-mysql-1
unlock tables;
（二）
登录test-mysql-2
[mysqld_multi]
mysqld = /usr/bin/mysqld_safe
mysqladmin = /usr/bin/mysqladmin
user = multi_admin
password = my_password
[mysqld3306]
datadir=/data/3306/
socket=/data/3306/mysql.sock
log-error=/data/3306/mysqld.log
pid-file=/data/3306/mysqld.pid
server-id = 2
log-bin=mysql-bin
replicate-ignore-db=mysql
replicate-do-db=test
slave-skip-errors=all
auto_increment_offset = 2
auto_increment_increment = 2
mysqld_multi stop 3306
mysqld_multi start 3306
grant replication slave on *.* to 'rep'@192.168.131.129 identified by 'chenshifei';
flush table with read lock;
show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 336 | | | |
+------------------+----------+--------------+------------------+-------------------+
登录test-mysql-1
change master to master_host='192.168.131.130', master_user='rep', master_password='chenshifei', master_port=3306, master_log_file='mysql-bin.000001', master_log_pos=336;
start slave;
登录test-mysql-2
unlock tables;
（测试）
create table test (id int(4) not null primary key , name char(4) ) engine=myisam default charset=utf8;
insert into test values ('1','chen');
alter table test modify id int(4) not null auto_increment;
在test-mysql-1上测试插入
use chenshifei
insert into test (name) values ('che1');
select * from test;
在test-mysql-2上测试插入
use chenshifei
insert into test (name) values ('che1');
select * from test;
结论，插入后各自的主键自增不同,表的主键要设置为自增，配置文件要设置自增配置，主键要为数字id