mysql 复制配置后续

jikcheng

 使用 msyql-unity 工具 msyqlrpladmin 工具 mysqlrplshow 工具。都无法显示当前的主机连接的从机是哪写。
仔细查找官方档之后才发现mysql 的从机 还没有配置完全。这里放出全部配置以供参考。
[mysqld1]
#skip-grant-tables
user=mysql
pid-file=/var/lib/mysql3307/mysql1db.pid
port=3307
socket=/var/lib/mysql3307/mysql3307.sock
datadir=/var/lib/mysql3307/
log-error=/var/log/mysql1.log
log-bin
expire_logs_days=7
server_id=1
log_slave_updates=on

enforce_gtid_consistency=on
gtid_mode=on

#report_port=3309


[mysqld2]
#skip-grant-tables
user=mysql
pid-file=/var/lib/mysql3308/mysql2db.pid
port=3308
socket=/var/lib/mysql3308/mysql3308.sock
datadir=/var/lib/mysql3308/
log-error=/var/log/mysql2.log
server_id=2
log-bin
expire_logs_days=7
log_slave_updates=on

enforce_gtid_consistency=on
gtid_mode=on
report_host=127.0.0.1
report_port=3308
report_user=root
report_password='123'

[mysqld3]
#skip-grant-tables
user=mysql
pid-file=/var/lib/mysql3309/mysql3db.pid
port=3309
socket=/var/lib/mysql3309/mysql3309.sock
datadir=/var/lib/mysql3309/
log-error=/var/log/mysql3.log
server_id=3
log-bin
expire_logs_days=7

log_slave_updates=on

enforce_gtid_consistency=on
gtid_mode=on

report_host=127.0.0.1
report_port=3309
report_user=root
report_password='123'

[mysqld4]
#skip-grant-tables
user=mysql
pid-file=/var/lib/mysql3310/mysql4db.pid
port=3310
socket=/var/lib/mysql3310/mysql3310.sock
datadir=/var/lib/mysql3310/
log-error=/var/log/mysql4.log
server_id=4
log-bin
expire_logs_days=7



新加的参数 
这些参数是开启guuid 的唯一标示符。
配置完master
mysql> CHANGE MASTER TO
-> MASTER_HOST = 'host_name',
-> MASTER_PORT = port_num,
-> MASTER_USER = 'user_name',
-> MASTER_PASSWORD = 'password',
-> MASTER_LOG_FILE = 'master_log_name',
-> MASTER_LOG_POS = master_log_pos;

转换使用GUUID 唯一标示符管理事务。
CHANGE MASTER TO MASTER_AUTO_POSITION=1;


在msyql1 -5 添加一下选项，重启服务器。
log_slave_updates=on

enforce_gtid_consistency=on
gtid_mode=on

这些选项是报告给master 主机的，这些参数设置好以后mysql-unity 工具才能显示主机相关联的从机状态。

report_host=127.0.0.1
report_port=3309
report_user=root
report_password='123'

配置这些参数 后才能使用msyqlsqlrpladmin
socket.gaierror: [Errno -2] Name or service not known
[root@mysqldb ~]# mysqlrpladmin --master=root:123@127.0.0.1:3307 --slaves=root:123@127.0.0.1:3308,root:123@127.0.0.1:3309 elect;
WARNING: Using a password on the command line interface can be insecure.
# Checking privileges.
# Electing candidate slave from known slaves.
# Best slave found is located on 127.0.0.1:3308.
# ...done.