之前部署过MariaDB Cluster，最近才出现这个问题（之前没有这个问题，不知道为什么）。
我有服务器 1、2 和 3。我在服务器 3 上执行了 INSERT 命令，但是，服务器 1 和 2 上的表保持不变。
3台服务器位于世界各地。After the INSERT command, the state uuid remains the same.
这是服务器 1 的状态：
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 <info@codership.com> |
| wsrep_provider_version | 25.3.14(r3560) |
| wsrep_ready | ON |
| wsrep_thread_count | 2 |
+------------------------------+----------------------------------------------------------+
服务器 2 的状态：
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 <info@codership.com> |
| wsrep_provider_version | 25.3.14(r3560) |
| wsrep_ready | ON |
| wsrep_thread_count | 2 |
+------------------------------+----------------------------------------------------------+
57 rows in set (0.01 sec)
server3 的状态（如您所见，延迟显示全部为 0，但我不知道为什么）
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 <info@codership.com> |
| wsrep_provider_version | 25.3.14(r3560) |
| wsrep_ready | ON |
| wsrep_thread_count | 2 |
+------------------------------+----------------------------------------------------------+
57 rows in set (0.00 sec)
所有三台服务器上的 iptables 都设置为接受所有输入和输出流量。
日志显示所有服务器已加入集群并与集群同步。
有谁知道为什么？谢谢。