Раньше я развертывал кластер MariaDB, и эта проблема возникает только недавно (у меня нет этой проблемы раньше, и я не знаю почему).MariaDB Galera Cluster не синхронизируется
У меня есть сервер 1, 2 и 3. Я выполнил команду INSERT на сервере 3, однако таблицы на серверах 1 и 2 остались без изменений.
3 сервера находятся в разных частях света. After the INSERT command, the state uuid remains the same.
Вот статус сервера 1:
MariaDB [mysql]> show status like 'wsrep_%'; +------------------------------+----------------------------------------------------------+ | Variable_name | Value | +------------------------------+----------------------------------------------------------+ | wsrep_local_state_uuid | c4f9e2e2-fee1-11e5-8648-a22b867b5a6e | | wsrep_protocol_version | 7 | | wsrep_last_committed | 205 | | wsrep_replicated | 170 | | wsrep_replicated_bytes | 160481 | | wsrep_repl_keys | 664 | | wsrep_repl_keys_bytes | 9222 | | wsrep_repl_data_bytes | 140379 | | wsrep_repl_other_bytes | 0 | | wsrep_received | 46 | | wsrep_received_bytes | 26150 | | wsrep_local_commits | 170 | | wsrep_local_cert_failures | 0 | | wsrep_local_replays | 1 | | wsrep_local_send_queue | 0 | | wsrep_local_send_queue_max | 1 | | wsrep_local_send_queue_min | 0 | | wsrep_local_send_queue_avg | 0.000000 | | wsrep_local_recv_queue | 0 | | wsrep_local_recv_queue_max | 1 | | wsrep_local_recv_queue_min | 0 | | wsrep_local_recv_queue_avg | 0.000000 | | wsrep_local_cached_downto | 1 | | wsrep_flow_control_paused_ns | 0 | | wsrep_flow_control_paused | 0.000000 | | wsrep_flow_control_sent | 0 | | wsrep_flow_control_recv | 0 | | wsrep_cert_deps_distance | 7.482927 | | wsrep_apply_oooe | 0.009756 | | wsrep_apply_oool | 0.000000 | | wsrep_apply_window | 1.009756 | | wsrep_commit_oooe | 0.000000 | | wsrep_commit_oool | 0.000000 | | wsrep_commit_window | 1.000000 | | wsrep_local_state | 4 | | wsrep_local_state_comment | Synced | | wsrep_cert_index_size | 28 | | wsrep_causal_reads | 0 | | wsrep_cert_interval | 0.009756 | | wsrep_incoming_addresses | server1:3306,server2:3306,server3:3306 | | wsrep_evs_delayed | | | wsrep_evs_evict_list | | | wsrep_evs_repl_latency | 0.200155/0.201113/0.201752/0.000614937/4 | | wsrep_evs_state | OPERATIONAL | | wsrep_gcomm_uuid | c4f91b4f-fee1-11e5-8c4f-6e451c332f79 | | wsrep_cluster_conf_id | 3 | | wsrep_cluster_size | 3 | | wsrep_cluster_state_uuid | c4f9e2e2-fee1-11e5-8648-a22b867b5a6e | | wsrep_cluster_status | Primary | | wsrep_connected | ON | | wsrep_local_bf_aborts | 6 | | wsrep_local_index | 0 | | wsrep_provider_name | Galera | | wsrep_provider_vendor | Codership Oy <[email protected]> | | wsrep_provider_version | 25.3.14(r3560) | | wsrep_ready | ON | | wsrep_thread_count | 2 | +------------------------------+----------------------------------------------------------+
Статус сервера 2:
MariaDB [(none)]> show status like 'wsrep_%'; +------------------------------+----------------------------------------------------------+ | Variable_name | Value | +------------------------------+----------------------------------------------------------+ | wsrep_local_state_uuid | c4f9e2e2-fee1-11e5-8648-a22b867b5a6e | | wsrep_protocol_version | 7 | | wsrep_last_committed | 225 | | wsrep_replicated | 35 | | wsrep_replicated_bytes | 25700 | | wsrep_repl_keys | 119 | | wsrep_repl_keys_bytes | 1757 | | wsrep_repl_data_bytes | 21703 | | wsrep_repl_other_bytes | 0 | | wsrep_received | 187 | | wsrep_received_bytes | 177793 | | wsrep_local_commits | 35 | | wsrep_local_cert_failures | 0 | | wsrep_local_replays | 1 | | wsrep_local_send_queue | 0 | | wsrep_local_send_queue_max | 1 | | wsrep_local_send_queue_min | 0 | | wsrep_local_send_queue_avg | 0.000000 | | wsrep_local_recv_queue | 0 | | wsrep_local_recv_queue_max | 4 | | wsrep_local_recv_queue_min | 0 | | wsrep_local_recv_queue_avg | 0.032086 | | wsrep_local_cached_downto | 9 | | wsrep_flow_control_paused_ns | 0 | | wsrep_flow_control_paused | 0.000000 | | wsrep_flow_control_sent | 0 | | wsrep_flow_control_recv | 0 | | wsrep_cert_deps_distance | 7.193548 | | wsrep_apply_oooe | 0.004630 | | wsrep_apply_oool | 0.000000 | | wsrep_apply_window | 1.004630 | | wsrep_commit_oooe | 0.000000 | | wsrep_commit_oool | 0.000000 | | wsrep_commit_window | 1.000000 | | wsrep_local_state | 4 | | wsrep_local_state_comment | Synced | | wsrep_cert_index_size | 28 | | wsrep_causal_reads | 0 | | wsrep_cert_interval | 0.009217 | | wsrep_incoming_addresses | server1:3306,server2:3306,server3:3306 | | wsrep_evs_delayed | | | wsrep_evs_evict_list | | | wsrep_evs_repl_latency | 0.200138/0.201917/0.203696/0.00177914/2 | | wsrep_evs_state | OPERATIONAL | | wsrep_gcomm_uuid | d562e272-fee1-11e5-b2a2-d3a6b5579aab | | wsrep_cluster_conf_id | 3 | | wsrep_cluster_size | 3 | | wsrep_cluster_state_uuid | c4f9e2e2-fee1-11e5-8648-a22b867b5a6e | | wsrep_cluster_status | Primary | | wsrep_connected | ON | | wsrep_local_bf_aborts | 0 | | wsrep_local_index | 1 | | wsrep_provider_name | Galera | | wsrep_provider_vendor | Codership Oy <[email protected]> | | wsrep_provider_version | 25.3.14(r3560) | | wsrep_ready | ON | | wsrep_thread_count | 2 | +------------------------------+----------------------------------------------------------+ 57 rows in set (0.01 sec)
Статус сервере3 (Как вы можете видеть, латентность показывает все 0, но я не знать почему)
MariaDB [(none)]> show status like 'wsrep_%'; +------------------------------+----------------------------------------------------------+ | Variable_name | Value | +------------------------------+----------------------------------------------------------+ | wsrep_local_state_uuid | c4f9e2e2-fee1-11e5-8648-a22b867b5a6e | | wsrep_protocol_version | 7 | | wsrep_last_committed | 245 | | wsrep_replicated | 5 | | wsrep_replicated_bytes | 4350 | | wsrep_repl_keys | 11 | | wsrep_repl_keys_bytes | 203 | | wsrep_repl_data_bytes | 3827 | | wsrep_repl_other_bytes | 0 | | wsrep_received | 226 | | wsrep_received_bytes | 208559 | | wsrep_local_commits | 1 | | wsrep_local_cert_failures | 0 | | wsrep_local_replays | 0 | | wsrep_local_send_queue | 0 | | wsrep_local_send_queue_max | 1 | | wsrep_local_send_queue_min | 0 | | wsrep_local_send_queue_avg | 0.000000 | | wsrep_local_recv_queue | 0 | | wsrep_local_recv_queue_max | 1 | | wsrep_local_recv_queue_min | 0 | | wsrep_local_recv_queue_avg | 0.000000 | | wsrep_local_cached_downto | 19 | | wsrep_flow_control_paused_ns | 0 | | wsrep_flow_control_paused | 0.000000 | | wsrep_flow_control_sent | 0 | | wsrep_flow_control_recv | 0 | | wsrep_cert_deps_distance | 7.022026 | | wsrep_apply_oooe | 0.000000 | | wsrep_apply_oool | 0.000000 | | wsrep_apply_window | 1.000000 | | wsrep_commit_oooe | 0.000000 | | wsrep_commit_oool | 0.000000 | | wsrep_commit_window | 1.000000 | | wsrep_local_state | 4 | | wsrep_local_state_comment | Synced | | wsrep_cert_index_size | 28 | | wsrep_causal_reads | 0 | | wsrep_cert_interval | 0.008811 | | wsrep_incoming_addresses | server1:3306,server2:3306,server3:3306 | | wsrep_evs_delayed | | | wsrep_evs_evict_list | | | wsrep_evs_repl_latency | 0/0/0/0/0 | | wsrep_evs_state | OPERATIONAL | | wsrep_gcomm_uuid | fd022144-fee1-11e5-a7a3-f23274fef9c3 | | wsrep_cluster_conf_id | 3 | | wsrep_cluster_size | 3 | | wsrep_cluster_state_uuid | c4f9e2e2-fee1-11e5-8648-a22b867b5a6e | | wsrep_cluster_status | Primary | | wsrep_connected | ON | | wsrep_local_bf_aborts | 0 | | wsrep_local_index | 2 | | wsrep_provider_name | Galera | | wsrep_provider_vendor | Codership Oy <[email protected]> | | wsrep_provider_version | 25.3.14(r3560) | | wsrep_ready | ON | | wsrep_thread_count | 2 | +------------------------------+----------------------------------------------------------+ 57 rows in set (0.00 sec)
iptables на всех трех серверах установлены для ПРИНИМАНИЯ всех входных и выходных потоков.
Журнал показывает, что все серверы подключились и синхронизировались с кластером.
Кто-нибудь знает, почему? Благодарю.
Поскольку механизм хранения MyISAM не является транзакционным, он не поддерживается в Galera. FWIW, изменения в таблицах MySQL могут быть реплицированы на другие узлы, включив wsrep_replicate_myisam. Но эта особенность экспериментальна. –
считают, что вынуждают клиентов использовать движок InnoDB. См. Https://mariadb.com/kb/en/library/server-system-variables/#enforce_storage_engine 'SET GLOBAL enforce_storage_engine = InnoDB;' –