Details
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Bug
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Status: Closed (View Workflow)
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Minor
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Resolution: Duplicate
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23.02.2
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None
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Debian Buster
Description
I'm running MaxScale 23.02.2 and it's connected to a Mariadb 10.3.38. Both hosts are on Debian Buster.
If rpl_semi_sync_master_enabled is set to false on the primary, replication between MaxScale's binlogrouter and the primary will break within 5 minutes.
2023-07-21 10:57:02 error : (binlogservice); Error received during replication from 'primary:3306': Failed to fetch binlog event from master:
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2023-07-21 17:58:02 86422 [Warning] Aborted connection 86422 to db: 'unconnected' user: 'user' host: 'maxscale' (Got an error writing communication packets)
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If I enable rpl_semi_sync_master_enabled, replication works as expected.
The Binlogrouter docs state that semi-sync isn't supported.
My MaxScale config looks like this.
[maxscale]
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threads = auto
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[binlogservice]
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type=service
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router=binlogrouter
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servers=master
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user=user
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password=password
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server_id=3489044470
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datadir=/data/binlogs
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expire_log_duration=72h
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expire_log_minimum_files=3
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net_timeout=30s
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[master]
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type=server
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address=192.168.1.1
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port=3306
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protocol=MariaDBBackend
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[binloglistener]
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type=listener
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service=binlogservice
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protocol=mariadbprotocol
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port=3306
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address=0.0.0.0
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[replicationmonitor]
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type=monitor
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module=mariadbmon
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servers=master
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user=user
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password=password
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monitor_interval=2000ms
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The primary's settings are almost entirely the default
MariaDB [(none)]> show variables like '%binl%';
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+-----------------------------------------+------------------------------+
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| Variable_name | Value |
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+-----------------------------------------+------------------------------+
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| binlog_annotate_row_events | ON |
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| binlog_cache_size | 32768 |
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| binlog_checksum | CRC32 |
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| binlog_commit_wait_count | 0 |
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| binlog_commit_wait_usec | 100000 |
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| binlog_direct_non_transactional_updates | OFF |
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| binlog_file_cache_size | 16384 |
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| binlog_format | ROW |
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| binlog_optimize_thread_scheduling | ON |
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| binlog_row_image | FULL |
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| binlog_stmt_cache_size | 32768 |
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| encrypt_binlog | OFF |
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| gtid_binlog_pos | 0-3489044454-12664560 |
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| gtid_binlog_state | 0-1-44,0-3489044454-12664560 |
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| innodb_locks_unsafe_for_binlog | OFF |
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| max_binlog_cache_size | 18446744073709547520 |
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| max_binlog_size | 104857600 |
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| max_binlog_stmt_cache_size | 18446744073709547520 |
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| read_binlog_speed_limit | 0 |
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| sync_binlog | 0 |
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| wsrep_forced_binlog_format | NONE |
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+-----------------------------------------+------------------------------+
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21 rows in set (0.002 sec)
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MariaDB [(none)]> show variables like '%repl%';
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+----------------------------------+-----------+
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| Variable_name | Value |
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+----------------------------------+-----------+
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| innodb_replication_delay | 0 |
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| replicate_annotate_row_events | ON |
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| replicate_do_db | |
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| replicate_do_table | |
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| replicate_events_marked_for_skip | REPLICATE |
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| replicate_ignore_db | |
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| replicate_ignore_table | |
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| replicate_wild_do_table | |
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| replicate_wild_ignore_table | |
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| skip_parallel_replication | OFF |
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| skip_replication | OFF |
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| wsrep_mysql_replication_bundle | 0 |
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| wsrep_replicate_myisam | OFF |
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+----------------------------------+-----------+
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13 rows in set (0.002 sec)
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MariaDB [(none)]> show variables like '%rpl%';
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+---------------------------------------+--------------+
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| Variable_name | Value |
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+---------------------------------------+--------------+
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| rpl_semi_sync_master_enabled | OFF |
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| rpl_semi_sync_master_timeout | 10000 |
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| rpl_semi_sync_master_trace_level | 32 |
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| rpl_semi_sync_master_wait_no_slave | ON |
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| rpl_semi_sync_master_wait_point | AFTER_COMMIT |
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| rpl_semi_sync_slave_delay_master | OFF |
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| rpl_semi_sync_slave_enabled | OFF |
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| rpl_semi_sync_slave_kill_conn_timeout | 5 |
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| rpl_semi_sync_slave_trace_level | 32 |
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+---------------------------------------+--------------+
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Attachments
Issue Links
- duplicates
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- Closed
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