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mysql 5.5半同步复制_MySQL5.5配置安装半同步复制

發布時間：2025/3/20 数据库 22 豆豆

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確認master和slave上是否開啟have_dynamic_loading

master

MASTER@root@(none) 10:54:58>show variables like 'have_dynamic_loading';

+----------------------+-------+

| Variable_name | Value |

+----------------------+-------+

| have_dynamic_loading | YES |

+----------------------+-------+

MASTER@root@(none) 10:54:58>show variables like 'have_dynamic_loading';

+----------------------+-------+

| Variable_name? ? ? ? | Value |

+----------------------+-------+

| have_dynamic_loading | YES? |

+----------------------+-------+slave

SLAVE@root@test 10:47:52>show variables like 'have_dynamic_loading';

+----------------------+-------+

| Variable_name | Value |

+----------------------+-------+

| have_dynamic_loading | YES |

+----------------------+-------+

SLAVE@root@test 10:47:52>show variables like 'have_dynamic_loading';

+----------------------+-------+

| Variable_name? ? ? ? | Value |

+----------------------+-------+

| have_dynamic_loading | YES? |

+----------------------+-------+

使用root在master上安裝半同步插件

MASTER@root@(none) 10:58:14>

MASTER@root@(none) 10:58:14>install plugin rpl_semi_sync_master soname 'semisync_master.so';

Query OK, 0 rows affected (0.01 sec)

MASTER@root@(none) 10:58:22>show plugins;

+--------------------------+--------+--------------------+--------------------+---------+

+--------------------------+--------+--------------------+--------------------+---------+

+--------------------------+--------+--------------------+--------------------+---------+

MASTER@root@(none) 10:58:14>

MASTER@root@(none) 10:58:14>install plugin rpl_semi_sync_master soname 'semisync_master.so';

Query OK, 0 rows affected (0.01 sec)

MASTER@root@(none) 10:58:22>show plugins;

+--------------------------+--------+--------------------+--------------------+---------+

+--------------------------+--------+--------------------+--------------------+---------+

+--------------------------+--------+--------------------+--------------------+---------+

使用root在slave上安裝半同步插件

SLAVE@root@test 10:55:18>install plugin rpl_semi_sync_slave soname 'semisync_slave.so';

Query OK, 0 rows affected (0.01 sec)

SLAVE@root@test 10:59:45>show plugins;

+--------------------------+--------+--------------------+-------------------+---------+

+--------------------------+--------+--------------------+-------------------+---------+

+--------------------------+--------+--------------------+-------------------+---------+

SLAVE@root@test 10:55:18>install plugin rpl_semi_sync_slave soname 'semisync_slave.so';

Query OK, 0 rows affected (0.01 sec)

SLAVE@root@test 10:59:45>show plugins;

+--------------------------+--------+--------------------+-------------------+---------+

+--------------------------+--------+--------------------+-------------------+---------+

+--------------------------+--------+--------------------+-------------------+---------+

分別在master和slave的my.cnf里添加以下配置

master

rpl_semi_sync_master_enabled=1

rpl_semi_sync_master_timeout=1000

rpl_semi_sync_master_trace_level=32

rpl_semi_sync_master_wait_no_slave=on

rpl_semi_sync_master_enabled=1

rpl_semi_sync_master_timeout=1000

rpl_semi_sync_master_trace_level=32

rpl_semi_sync_master_wait_no_slave=onslave

rpl_semi_sync_slave_enabled=1

master日志

140203 23:06:17 [Note] Semi-sync replication initialized for transactions.

140203 23:06:17 [Note] Semi-sync replication enabled on the master.

140203 23:06:17 [Note] Server hostname (bind-address): '0.0.0.0'; port: 30307

140203 23:06:17 [Note] - '0.0.0.0' resolves to '0.0.0.0';

140203 23:06:17 [Note] Server socket created on IP: '0.0.0.0'.

140203 23:06:17 [Warning] 'proxies_priv' entry '@ root@mynode1' ignored in --skip-name-resolve mode.

140203 23:06:17 [Note] Event Scheduler: Loaded 0 events

140203 23:06:17 [Note] /service/mysql/bin/mysqld: ready for connections.

Version: '5.5.34-log' socket: '/data/mysql/mysql.sock' port: 30307 MASTER_DB

140203 23:06:17 [Note] Event Scheduler: scheduler thread started with id 1

140203 23:06:20 [Note] Start semi-sync binlog_dump to slave (server_id: 2), pos(binlog-master.000010, 290)

140203 23:06:17 [Note] Semi-sync replication initialized for transactions.

140203 23:06:17 [Note] Semi-sync replication enabled on the master.

140203 23:06:17 [Note] Server hostname (bind-address): '0.0.0.0'; port: 30307

140203 23:06:17 [Note]? - '0.0.0.0' resolves to '0.0.0.0';

140203 23:06:17 [Note] Server socket created on IP: '0.0.0.0'.

140203 23:06:17 [Warning] 'proxies_priv' entry '@ root@mynode1' ignored in --skip-name-resolve mode.

140203 23:06:17 [Note] Event Scheduler: Loaded 0 events

140203 23:06:17 [Note] /service/mysql/bin/mysqld: ready for connections.

Version: '5.5.34-log'? socket: '/data/mysql/mysql.sock'? port: 30307? MASTER_DB

140203 23:06:17 [Note] Event Scheduler: scheduler thread started with id 1

140203 23:06:20 [Note] Start semi-sync binlog_dump to slave (server_id: 2), pos(binlog-master.000010, 290)slave日志

140203 23:06:20 [Note] Slave I/O thread: Start semi-sync replication to master 'rep@mynode1:30307' in log 'binlog-master.000010' at position 290

140203 23:06:20 [Note] Slave SQL thread initialized, starting replication in log 'binlog-master.000010' at position 290, relay log './mynode2-relay-bin.000029' position: 440

140203 23:06:20 [Note] Event Scheduler: scheduler thread started with id 1

140203 23:06:20 [Note] Slave I/O thread: connected to master 'rep@mynode1:30307',replication started in log 'binlog-master.000010' at position 290

140203 23:06:20 [Note] Slave I/O thread: Start semi-sync replication to master 'rep@mynode1:30307' in log 'binlog-master.000010' at position 290

140203 23:06:20 [Note] Slave SQL thread initialized, starting replication in log 'binlog-master.000010' at position 290, relay log './mynode2-relay-bin.000029' position: 440

140203 23:06:20 [Note] Event Scheduler: scheduler thread started with id 1

140203 23:06:20 [Note] Slave I/O thread: connected to master 'rep@mynode1:30307',replication started in log 'binlog-master.000010' at position 290

MASTER@root@test 11:10:41>show global status like 'rpl%';

+--------------------------------------------+-------------+

| Variable_name | Value |

+--------------------------------------------+-------------+

| Rpl_semi_sync_master_clients | 1 |

| Rpl_semi_sync_master_net_avg_wait_time | 619 |

| Rpl_semi_sync_master_net_wait_time | 619 |

| Rpl_semi_sync_master_net_waits | 1 |

| Rpl_semi_sync_master_no_times | 0 |

| Rpl_semi_sync_master_no_tx | 0 |

| Rpl_semi_sync_master_status | ON |

| Rpl_semi_sync_master_timefunc_failures | 0 |

| Rpl_semi_sync_master_tx_avg_wait_time | 734 |

| Rpl_semi_sync_master_tx_wait_time | 734 |

| Rpl_semi_sync_master_tx_waits | 1 |

| Rpl_semi_sync_master_wait_pos_backtraverse | 0 |

| Rpl_semi_sync_master_wait_sessions | 0 |

| Rpl_semi_sync_master_yes_tx | 1 |

| Rpl_status | AUTH_MASTER |

+--------------------------------------------+-------------+

MASTER@root@test 11:10:41>show global status like 'rpl%';

+--------------------------------------------+-------------+

| Variable_name? ? ? ? ? ? ? ? ? ? ? ? ? ? ? | Value? ? ? |

+--------------------------------------------+-------------+

| Rpl_semi_sync_master_clients? ? ? ? ? ? ? | 1? ? ? ? ? |

| Rpl_semi_sync_master_net_avg_wait_time? ? | 619? ? ? ? |

| Rpl_semi_sync_master_net_wait_time? ? ? ? | 619? ? ? ? |

| Rpl_semi_sync_master_net_waits? ? ? ? ? ? | 1? ? ? ? ? |

| Rpl_semi_sync_master_no_times? ? ? ? ? ? ? | 0? ? ? ? ? |

| Rpl_semi_sync_master_no_tx? ? ? ? ? ? ? ? | 0? ? ? ? ? |

| Rpl_semi_sync_master_status? ? ? ? ? ? ? ? | ON? ? ? ? ? |

| Rpl_semi_sync_master_timefunc_failures? ? | 0? ? ? ? ? |

| Rpl_semi_sync_master_tx_avg_wait_time? ? ? | 734? ? ? ? |

| Rpl_semi_sync_master_tx_wait_time? ? ? ? ? | 734? ? ? ? |

| Rpl_semi_sync_master_tx_waits? ? ? ? ? ? ? | 1? ? ? ? ? |

| Rpl_semi_sync_master_wait_pos_backtraverse | 0? ? ? ? ? |

| Rpl_semi_sync_master_wait_sessions? ? ? ? | 0? ? ? ? ? |

| Rpl_semi_sync_master_yes_tx? ? ? ? ? ? ? ? | 1? ? ? ? ? |

| Rpl_status? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? | AUTH_MASTER |

+--------------------------------------------+-------------+

SLAVE@root@test 11:10:02>show global status like 'rpl%';

+----------------------------+-------------+

| Variable_name | Value |

+----------------------------+-------------+

| Rpl_semi_sync_slave_status | ON |

| Rpl_status | AUTH_MASTER |

+----------------------------+-------------+

總結

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