Linux - mysql半复制（基于主从复制）

　　

# 在主从复制的基础，可进行设置
# 主节点，安装模块rpm
:06: (root@localhost) [(none)]> install plugin rpl_semi_sync_master soname 'semisync_master.so';
Query OK, 0 rows affected (0.04 sec)

:07: (root@localhost) [(none)]> show plugins;
+----------------------------+----------+--------------------+--------------------+---------+
| Name                       | Status   | Type               | Library            | License |
+----------------------------+----------+--------------------+--------------------+---------+
| binlog                     | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| mysql_native_password      | ACTIVE   | AUTHENTICATION     | NULL               | GPL     |
| sha256_password            | ACTIVE   | AUTHENTICATION     | NULL               | GPL     |
| PERFORMANCE_SCHEMA         | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| MEMORY                     | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| MRG_MYISAM                 | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| InnoDB                     | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| INNODB_TRX                 | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_LOCKS               | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_LOCK_WAITS          | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_CMP                 | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_CMP_RESET           | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_CMPMEM              | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_CMPMEM_RESET        | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_CMP_PER_INDEX       | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_CMP_PER_INDEX_RESET | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_BUFFER_PAGE         | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_BUFFER_PAGE_LRU     | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_BUFFER_POOL_STATS   | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_TEMP_TABLE_INFO     | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_METRICS             | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_FT_DELETED          | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_FT_BEING_DELETED    | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_FT_CONFIG           | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_FT_INDEX_CACHE      | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_FT_INDEX_TABLE      | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_TABLES          | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_TABLESTATS      | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_INDEXES         | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_COLUMNS         | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_FIELDS          | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_FOREIGN         | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_FOREIGN_COLS    | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_TABLESPACES     | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_DATAFILES       | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| INNODB_SYS_VIRTUAL         | ACTIVE   | INFORMATION SCHEMA | NULL               | GPL     |
| CSV                        | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| MyISAM                     | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| partition                  | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| FEDERATED                  | DISABLED | STORAGE ENGINE     | NULL               | GPL     |
| BLACKHOLE                  | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| ARCHIVE                    | ACTIVE   | STORAGE ENGINE     | NULL               | GPL     |
| ngram                      | ACTIVE   | FTPARSER           | NULL               | GPL     |
| rpl_semi_sync_master       | ACTIVE   | REPLICATION        | semisync_master.so | GPL     |
+----------------------------+----------+--------------------+--------------------+---------+
45 rows in set (0.00 sec)

[23:32:02 root@centos7 ~]#cat /etc/my.cnf
[mysqld]
server-id=21
log-bin
datadir=/data/mysql
skip_name_resolve=1
socket=/data/mysql/mysql.sock
log-error=/data/mysql/mysql.log
pid-file=/data/mysql/mysql.pid
rpl_semi_sync_master_enabled=on  -> install rpl_semi_sync_master , add this line
rpl_semi_sync_master_timeout=1000 -> install rpl_semi_sync_master_timeout , add this line

[client]
socket=/data/mysql/mysql.sock
[mysql]
prompt="\r:\m:\s(\u@\h) [\d]>\_"


# 从节点

:18: (root@localhost) [(none)]> install plugin rpl_semi_sync_slave soname 'semisync_slave.so';
Query OK, 0 rows affected (0.02 sec)

[23:34:02 root@centos7 ~]#cat /etc/my.cnf
[mysqld]
server-id=23
log-bin
datadir=/data/mysql
skip_name_resolve=1
socket=/data/mysql/mysql.sock
log-error=/data/mysql/mysql.log
pid-file=/data/mysql/mysql.pid
rpl_semi_sync_slave_enabled=on -> after install rpl_semi_sync_slave

[client]
socket=/data/mysql/mysql.sock
[mysql]
prompt="\r:\m:\s(\u@\h) [\d]>\_"

:25: (root@localhost) [(none)]> start slave;
Query OK, 0 rows affected (0.00 sec)

# 在从节点2一样设置

# 此时在主节点查询是否成功
:25: (root@localhost) [(none)]> show global status like "%semi%";
+--------------------------------------------+-------+
| Variable_name                              | Value |
+--------------------------------------------+-------+
| Rpl_semi_sync_master_clients               | 2     |
| Rpl_semi_sync_master_net_avg_wait_time     | 0     |
| Rpl_semi_sync_master_net_wait_time         | 0     |
| Rpl_semi_sync_master_net_waits             | 0     |
| Rpl_semi_sync_master_no_times              | 1     |
| Rpl_semi_sync_master_no_tx                 | 2     |
| Rpl_semi_sync_master_status                | ON    |
| Rpl_semi_sync_master_timefunc_failures     | 0     |
| Rpl_semi_sync_master_tx_avg_wait_time      | 0     |
| Rpl_semi_sync_master_tx_wait_time          | 0     |
| Rpl_semi_sync_master_tx_waits              | 0     |
| Rpl_semi_sync_master_wait_pos_backtraverse | 0     |
| Rpl_semi_sync_master_wait_sessions         | 0     |
| Rpl_semi_sync_master_yes_tx                | 0     |
+--------------------------------------------+-------+
14 rows in set (0.01 sec)

#此时已经配置完毕