# Introduction in replication course 在本教程中，我们将学习Manticore Search中复制的基础知识。 ### 简要介绍复制 Manticore搜索守护进程可以将写事务复制到集群中的其他节点，用于实时或Percolate索引。 *您可以在这里尝试* *[here](https://play.manticoresearch.com/replication/)* *或阅读下面的内容。* 要使用守护进程进行复制，您需要确保： - 您的构建支持复制（在Manticore官方构建中默认启用 - ） - 在searchd部分的配置中设置data_dir选项。这是存储传入索引的位置 - 为复制协议设置listen选项，每个集群至少使用两个端口范围 - 为SphinxAPI协议设置listen选项 - 为SphinxQL协议设置listen选项（用于执行集群操作语句） - 可选地设置server_id选项。值必须在集群中唯一。如果未设置，server_ids将自动生成 您可以查看用于此演示的Manticore配置示例： `cat /etc/sphinxsearch/sphinx1.conf` ```ini index pq { type = percolate path = /var/lib/manticore/data/pq1 } index testrt { type = rt path = /var/lib/manticore/data/testrt1 rt_field = title rt_field = content rt_attr_uint = gid } searchd { listen = 127.0.0.1:9312 listen = 127.0.0.1:9306:mysql41 listen = 127.0.0.1:9350-9359:replication data_dir = /var/run/manticore/replication/1 log = /var/run/manticore/log/searchd1.log pid_file = /var/run/manticore/searchd1.pid binlog_path = /var/run/manticore/data/pq1 server_id = 1 } ``` 我们在这里运行两个Manticore搜索守护进程实例，分别使用不同的端口（9306和9307），以代表我们未来集群中的两个节点。另一个的配置是： `cat /etc/sphinxsearch/sphinx2.conf` ```ini searchd { listen = 127.0.0.1:9313 listen = 127.0.0.1:9307:mysql41 listen = 127.0.0.1:9360-9369:replication data_dir = /var/run/manticore/replication/2 log = /var/run/manticore/log/searchd2.log pid_file = /var/run/manticore/searchd2.pid binlog_path = /var/run/manticore/data/pq2 server_id = 2 } ``` 让我们连接到第一个： `mysql -P 9306 -h0` ```sql root@replication-5b59c59f5c-mkqfc:/# mysql -P 9306 -h0 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 3.1.0 445e806e@190716 release Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. ``` 并创建一个新的集群。 ## 创建新集群 `CREATE CLUSTER posts;` ```sql MySQL [(none)]> CREATE CLUSTER posts; Query OK, 0 rows affected (0.90 sec) ``` 要确保集群已成功创建，请使用**SHOW STATUS**命令： `SHOW STATUS LIKE 'cluster%';` ```sql MySQL [(none)]> SHOW STATUS LIKE 'cluster%'; +------------------------------------------+----------------------------------------------+ | Counter | Value | +------------------------------------------+----------------------------------------------+ | cluster_name | posts | | cluster_posts_state_uuid | 95c2ffc3-c296-11e9-b475-9fad1c2e6dab | | cluster_posts_conf_id | 1 | | cluster_posts_status | primary | | cluster_posts_size | 1 | | cluster_posts_local_index | 0 | | cluster_posts_node_state | synced | | cluster_posts_nodes_set | | | cluster_posts_nodes_view | 127.0.0.1:9312,127.0.0.1:9350:replication | | cluster_posts_indexes_count | 0 | | cluster_posts_indexes | | | cluster_posts_local_state_uuid | 95c2ffc3-c296-11e9-b475-9fad1c2e6dab | | cluster_posts_protocol_version | 9 | | cluster_posts_last_applied | 0 | | cluster_posts_last_committed | 0 | | cluster_posts_replicated | 0 | | cluster_posts_replicated_bytes | 0 | | cluster_posts_repl_keys | 0 | | cluster_posts_repl_keys_bytes | 0 | | cluster_posts_repl_data_bytes | 0 | | cluster_posts_repl_other_bytes | 0 | | cluster_posts_received | 2 | | cluster_posts_received_bytes | 175 | | cluster_posts_local_commits | 0 | | cluster_posts_local_cert_failures | 0 | | cluster_posts_local_replays | 0 | | cluster_posts_local_send_queue | 0 | | cluster_posts_local_send_queue_max | 2 | | cluster_posts_local_send_queue_min | 0 | | cluster_posts_local_send_queue_avg | 0.500000 | | cluster_posts_local_recv_queue | 0 | | cluster_posts_local_recv_queue_max | 2 | | cluster_posts_local_recv_queue_min | 0 | | cluster_posts_local_recv_queue_avg | 0.500000 | | cluster_posts_local_cached_downto | 0 | | cluster_posts_flow_control_paused_ns | 0 | | cluster_posts_flow_control_paused | 0.000000 | | cluster_posts_flow_control_sent | 0 | | cluster_posts_flow_control_recv | 0 | | cluster_posts_flow_control_interval | [ 100, 100 ] | | cluster_posts_flow_control_interval_low | 100 | | cluster_posts_flow_control_interval_high | 100 | | cluster_posts_flow_control_status | OFF | | cluster_posts_cert_deps_distance | 0.000000 | | cluster_posts_apply_oooe | 0.000000 | | cluster_posts_apply_oool | 0.000000 | | cluster_posts_apply_window | 0.000000 | | cluster_posts_commit_oooe | 0.000000 | | cluster_posts_commit_oool | 0.000000 | | cluster_posts_commit_window | 0.000000 | | cluster_posts_local_state | 4 | | cluster_posts_local_state_comment | Synced | | cluster_posts_cert_index_size | 0 | | cluster_posts_cert_bucket_count | 2 | | cluster_posts_gcache_pool_size | 1320 | | cluster_posts_causal_reads | 0 | | cluster_posts_cert_interval | 0.000000 | | cluster_posts_open_transactions | 0 | | cluster_posts_open_connections | 0 | | cluster_posts_ist_receive_status | | | cluster_posts_ist_receive_seqno_start | 0 | | cluster_posts_ist_receive_seqno_current | 0 | | cluster_posts_ist_receive_seqno_end | 0 | | cluster_posts_incoming_addresses | 127.0.0.1:9312,127.0.0.1:9350:replication | | cluster_posts_cluster_weight | 1 | | cluster_posts_desync_count | 0 | | cluster_posts_evs_delayed | | | cluster_posts_evs_evict_list | | | cluster_posts_evs_repl_latency | 1.075e-06/7.957e-06/2.2911e-05/8.12112e-06/5 | | cluster_posts_evs_state | OPERATIONAL | | cluster_posts_gcomm_uuid | 95b52441-c296-11e9-abae-52c260760909 | +------------------------------------------+----------------------------------------------+ 71 rows in set (0.00 sec) ``` 您可以在状态字段中看到我们的新集群信息。 让我们将一些数据插入到我们的**testrt**索引中。 `INSERT INTO testrt VALUES(1,'List of HP business laptops','Elitebook Probook',10);` ```sql MySQL [(none)]> INSERT INTO testrt VALUES(1,'List of HP business laptops ','Elitebook Probook',10); Query OK, 1 row affected (0.10 sec) ``` `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` 请注意，所有旨在更改集群中索引的写操作语句（如**INSERT**、**REPLACE**、**DELETE**、**TRUNCATE**）必须使用**cluster_name:index_name**格式而不是纯**index_name**，以确保更改传播到集群中的所有副本。否则将触发错误（见下文）。但直到索引加入集群之前，您可以不带任何前缀插入数据： `INSERT INTO testrt VALUES(2,'List of Dell business laptops','Latitude Precision Vostro',10);` ```sql MySQL [(none)]> INSERT INTO testrt VALUES(2,'List of Dell business laptops','Latitude Precision Vostro',10); Query OK, 1 row affected (0.00 sec) ``` 当您尝试将文档插入到集群中的索引时，需要在索引名称前加上集群名称： `INSERT INTO posts:testrt VALUES(3,'List of Dell business laptops','Latitude Precision Vostro',10);` ```sql MySQL [(none)]> INSERT INTO posts:testrt VALUES(3,'List of Dell business laptops','Latitude Precision Vostro',10); ERROR 1064 (42000): index 'testrt' is not in any cluster, use just 'testrt' ``` 由于索引尚未加入集群，我们看到错误。要能够复制新文档，我们应首先将索引添加到集群中。可以使用以下语句完成： `ALTER CLUSTER posts ADD testrt;` ```sql MySQL [(none)]> ALTER CLUSTER posts ADD testrt; Query OK, 0 rows affected (0.10 sec) ``` 我们的**testrt**索引现在在集群中，可以通过查看**cluster_posts_indexes**状态字段来确认（**posts**是我们集群的名称）。 `SHOW STATUS LIKE 'cluster_posts_indexes';` ```sql MySQL [(none)]> SHOW STATUS LIKE 'cluster_posts_indexes'; +-----------------------+--------+ | Counter | Value | +-----------------------+--------+ | cluster_posts_indexes | testrt | +-----------------------+--------+ 1 row in set (0.00 sec) ``` 让我们向我们的**testrt**索引插入更多数据： `INSERT INTO testrt VALUES(3,'List of Dell business laptops','Latitude Precision Vostro',10);` ```sql MySQL [(none)]> INSERT INTO testrt VALUES(3,'List of Dell business lapto ps','Latitude Precision Vostro',10); ERROR 1064 (42000): index 'testrt' is a part of cluster 'posts', use 'posts:testrt' ``` 现在我们看到错误，因为正确的查询是： `INSERT INTO posts:testrt VALUES(3,'List of Dell business laptops','Latitude Precision Vostro',10);` ```sql MySQL [(none)]> INSERT INTO posts:testrt VALUES(3,'List of Dell business laptops','Latitude Precision Vostro',10); ERROR 1064 (42000): index 'testrt' is not in any cluster, use just 'testrt' ``` 并且它按预期工作。 `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` ## 将节点加入集群 --- 让我们去另一个节点。 `exit;` ```sql MySQL [(none)]> exit; Bye ``` `mysql -P 9307 -h0` ```sql root@replication-5b59c59f5c-mkqfc:/# mysql -P 9307 -h0 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 3.1.0 445e806e@190716 release Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. ``` 我们知道这个节点尚未加入我们的集群，因此它不包含我们在另一个节点上之前添加到**testrt**索引中的任何数据。甚至没有**testrt**索引 `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` 让我们加入集群。为此，请使用**JOIN CLUSTER**语句。您需要指定集群名称（因为可能有多个集群）和要连接的节点： `JOIN CLUSTER posts at '127.0.0.1:9312';` ```sql MySQL [(none)]> JOIN CLUSTER posts at '127.0.0.1:9312'; Query OK, 0 rows affected (1.90 sec) ``` 现在让我们再试一次： `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` 我们看到所有索引数据已成功复制。让我们向索引插入一个更多值。 `INSERT INTO posts:testrt VALUES(4,'List of Dell gaming laptops','Inspirion Alienware',20);` ```sql MySQL [(none)]> INSERT INTO posts:testrt VALUES(4,'List of Dell gaming l aptops','Inspirion Alienware',20); Query OK, 1 row affected (0.20 sec) ``` `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` 现在切换回我们的第一个节点： `exit;` ```sql MySQL [(none)]> exit; Bye ``` `mysql -P 9306 -h0` ```sql root@replication-5b59c59f5c-mkqfc:/# mysql -P 9306 -h0 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 3.1.0 445e806e@190716 release Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. ``` `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` 正如我们所见，更改已成功复制。 ## 删除集群索引和集群 --- 现在我们将索引从集群中删除： `ALTER CLUSTER posts DROP testrt;` ```sql MySQL [(none)]> ALTER CLUSTER posts DROP testrt; Query OK, 0 rows affected (0.00 sec) ``` `SHOW STATUS LIKE 'cluster_posts_indexes';` ```sql MySQL [(none)]> SHOW STATUS LIKE 'cluster_posts_indexes'; +-----------------------+--------+ | Counter | Value | +-----------------------+--------+ | cluster_posts_indexes | testrt | +-----------------------+--------+ 1 row in set (0.00 sec) ``` 成功了！ ` SELECT * from testrt;` ```sql MySQL [(none)]> SELECT * from testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | | 2 | 10 | | 3 | 10 | | 4 | 20 | +------+------+ 4 rows in set (0.00 sec) ``` **testrt**索引已成为一个本地非复制索引。让我们确认这一点： ` INSERT INTO testrt VALUES(5,'Lenovo laptops list','Yoga IdeaPad',30);` ```sql MySQL [(none)]> INSERT INTO testrt VALUES(5,'Lenovo laptops list','Yoga IdeaPad',30); Query OK, 1 row affected (0.00 sec) ``` 没有关于缺少'posts:'的警告，因此'testrt'不再在集群中。 `SELECT * from testrt;` ```sql MySQL [(none)]> SELECT * from testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | | 2 | 10 | | 3 | 10 | | 4 | 20 | +------+------+ 4 rows in set (0.00 sec) ``` 让我们切换到我们的第二个节点： `exit;` ```sql MySQL [(none)]> exit; Bye ``` `mysql -P 9307 -h0` ```sql root@replication-5b59c59f5c-mkqfc:/# mysql -P 9307 -h0 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 3.1.0 445e806e@190716 release Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. ``` `SELECT * from testrt;` ```sql MySQL [(none)]> SELECT * from testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | | 2 | 10 | | 3 | 10 | | 4 | 20 | +------+------+ 4 rows in set (0.00 sec) ``` 正如预期，我们在第一个节点上所做的更改未复制到第二个节点。 要完全删除集群，请使用**DELETE CLUSTER**语句： `DELETE CLUSTER posts;` ```sql MySQL [(none)]> DELETE CLUSTER posts; Query OK, 0 rows affected (6.20 sec) ``` `SHOW STATUS LIKE 'cluster%';` ```sql MySQL [(none)]> SHOW STATUS LIKE 'cluster%'; +------------------------------------------+----------------------------------------------+ | Counter | Value | +------------------------------------------+----------------------------------------------+ | cluster_name | posts | | cluster_posts_state_uuid | 95c2ffc3-c296-11e9-b475-9fad1c2e6dab | | cluster_posts_conf_id | 1 | | cluster_posts_status | primary | | cluster_posts_size | 1 | | cluster_posts_local_index | 0 | | cluster_posts_node_state | synced | | cluster_posts_nodes_set | | | cluster_posts_nodes_view | 127.0.0.1:9312,127.0.0.1:9350:replication | | cluster_posts_indexes_count | 0 | | cluster_posts_indexes | | | cluster_posts_local_state_uuid | 95c2ffc3-c296-11e9-b475-9fad1c2e6dab | | cluster_posts_protocol_version | 9 | | cluster_posts_last_applied | 0 | | cluster_posts_last_committed | 0 | | cluster_posts_replicated | 0 | | cluster_posts_replicated_bytes | 0 | | cluster_posts_repl_keys | 0 | | cluster_posts_repl_keys_bytes | 0 | | cluster_posts_repl_data_bytes | 0 | | cluster_posts_repl_other_bytes | 0 | | cluster_posts_received | 2 | | cluster_posts_received_bytes | 175 | | cluster_posts_local_commits | 0 | | cluster_posts_local_cert_failures | 0 | | cluster_posts_local_replays | 0 | | cluster_posts_local_send_queue | 0 | | cluster_posts_local_send_queue_max | 2 | | cluster_posts_local_send_queue_min | 0 | | cluster_posts_local_send_queue_avg | 0.500000 | | cluster_posts_local_recv_queue | 0 | | cluster_posts_local_recv_queue_max | 2 | | cluster_posts_local_recv_queue_min | 0 | | cluster_posts_local_recv_queue_avg | 0.500000 | | cluster_posts_local_cached_downto | 0 | | cluster_posts_flow_control_paused_ns | 0 | | cluster_posts_flow_control_paused | 0.000000 | | cluster_posts_flow_control_sent | 0 | | cluster_posts_flow_control_recv | 0 | | cluster_posts_flow_control_interval | [ 100, 100 ] | | cluster_posts_flow_control_interval_low | 100 | | cluster_posts_flow_control_interval_high | 100 | | cluster_posts_flow_control_status | OFF | | cluster_posts_cert_deps_distance | 0.000000 | | cluster_posts_apply_oooe | 0.000000 | | cluster_posts_apply_oool | 0.000000 | | cluster_posts_apply_window | 0.000000 | | cluster_posts_commit_oooe | 0.000000 | | cluster_posts_commit_oool | 0.000000 | | cluster_posts_commit_window | 0.000000 | | cluster_posts_local_state | 4 | | cluster_posts_local_state_comment | Synced | | cluster_posts_cert_index_size | 0 | | cluster_posts_cert_bucket_count | 2 | | cluster_posts_gcache_pool_size | 1320 | | cluster_posts_causal_reads | 0 | | cluster_posts_cert_interval | 0.000000 | | cluster_posts_open_transactions | 0 | | cluster_posts_open_connections | 0 | | cluster_posts_ist_receive_status | | | cluster_posts_ist_receive_seqno_start | 0 | | cluster_posts_ist_receive_seqno_current | 0 | | cluster_posts_ist_receive_seqno_end | 0 | | cluster_posts_incoming_addresses | 127.0.0.1:9312,127.0.0.1:9350:replication | | cluster_posts_cluster_weight | 1 | | cluster_posts_desync_count | 0 | | cluster_posts_evs_delayed | | | cluster_posts_evs_evict_list | | | cluster_posts_evs_repl_latency | 1.075e-06/7.957e-06/2.2911e-05/8.12112e-06/5 | | cluster_posts_evs_state | OPERATIONAL | | cluster_posts_gcomm_uuid | 95b52441-c296-11e9-abae-52c260760909 | +------------------------------------------+----------------------------------------------+ 71 rows in set (0.00 sec) ``` 集群从所有节点中删除，但其索引保持完整并成为普通的本地非复制索引。 `SELECT * FROM testrt;` ```sql MySQL [(none)]> SELECT * FROM testrt; +------+------+ | id | gid | +------+------+ | 1 | 10 | +------+------+ 1 row in set (0.10 sec) ``` 为了确保它确实从所有地方删除，我们可以检查另一个节点的状态： `exit;` ```sql MySQL [(none)]> exit; Bye ``` `mysql -P 9306 -h0` ```sql root@replication-5b59c59f5c-mkqfc:/# mysql -P 9306 -h0 Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 3.1.0 445e806e@190716 release Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. ``` `SHOW STATUS LIKE 'cluster%';` ```sql MySQL [(none)]> SHOW STATUS LIKE 'cluster%'; +------------------------------------------+----------------------------------------------+ | Counter | Value | +------------------------------------------+----------------------------------------------+ | cluster_name | posts | | cluster_posts_state_uuid | 95c2ffc3-c296-11e9-b475-9fad1c2e6dab | | cluster_posts_conf_id | 1 | | cluster_posts_status | primary | | cluster_posts_size | 1 | | cluster_posts_local_index | 0 | | cluster_posts_node_state | synced | | cluster_posts_nodes_set | | | cluster_posts_nodes_view | 127.0.0.1:9312,127.0.0.1:9350:replication | | cluster_posts_indexes_count | 0 | | cluster_posts_indexes | | | cluster_posts_local_state_uuid | 95c2ffc3-c296-11e9-b475-9fad1c2e6dab | | cluster_posts_protocol_version | 9 | | cluster_posts_last_applied | 0 | | cluster_posts_last_committed | 0 | | cluster_posts_replicated | 0 | | cluster_posts_replicated_bytes | 0 | | cluster_posts_repl_keys | 0 | | cluster_posts_repl_keys_bytes | 0 | | cluster_posts_repl_data_bytes | 0 | | cluster_posts_repl_other_bytes | 0 | | cluster_posts_received | 2 | | cluster_posts_received_bytes | 175 | | cluster_posts_local_commits | 0 | | cluster_posts_local_cert_failures | 0 | | cluster_posts_local_replays | 0 | | cluster_posts_local_send_queue | 0 | | cluster_posts_local_send_queue_max | 2 | | cluster_posts_local_send_queue_min | 0 | | cluster_posts_local_send_queue_avg | 0.500000 | | cluster_posts_local_recv_queue | 0 | | cluster_posts_local_recv_queue_max | 2 | | cluster_posts_local_recv_queue_min | 0 | | cluster_posts_local_recv_queue_avg | 0.500000 | | cluster_posts_local_cached_downto | 0 | | cluster_posts_flow_control_paused_ns | 0 | | cluster_posts_flow_control_paused | 0.000000 | | cluster_posts_flow_control_sent | 0 | | cluster_posts_flow_control_recv | 0 | | cluster_posts_flow_control_interval | [ 100, 100 ] | | cluster_posts_flow_control_interval_low | 100 | | cluster_posts_flow_control_interval_high | 100 | | cluster_posts_flow_control_status | OFF | | cluster_posts_cert_deps_distance | 0.000000 | | cluster_posts_apply_oooe | 0.000000 | | cluster_posts_apply_oool | 0.000000 | | cluster_posts_apply_window | 0.000000 | | cluster_posts_commit_oooe | 0.000000 | | cluster_posts_commit_oool | 0.000000 | | cluster_posts_commit_window | 0.000000 | | cluster_posts_local_state | 4 | | cluster_posts_local_state_comment | Synced | | cluster_posts_cert_index_size | 0 | | cluster_posts_cert_bucket_count | 2 | | cluster_posts_gcache_pool_size | 1320 | | cluster_posts_causal_reads | 0 | | cluster_posts_cert_interval | 0.000000 | | cluster_posts_open_transactions | 0 | | cluster_posts_open_connections | 0 | | cluster_posts_ist_receive_status | | | cluster_posts_ist_receive_seqno_start | 0 | | cluster_posts_ist_receive_seqno_current | 0 | | cluster_posts_ist_receive_seqno_end | 0 | | cluster_posts_incoming_addresses | 127.0.0.1:9312,127.0.0.1:9350:replication | | cluster_posts_cluster_weight | 1 | | cluster_posts_desync_count | 0 | | cluster_posts_evs_delayed | | | cluster_posts_evs_evict_list | | | cluster_posts_evs_repl_latency | 1.075e-06/7.957e-06/2.2911e-05/8.12112e-06/5 | | cluster_posts_evs_state | OPERATIONAL | | cluster_posts_gcomm_uuid | 95b52441-c296-11e9-abae-52c260760909 | +------------------------------------------+----------------------------------------------+ 71 rows in set (0.00 sec) ``` 我们看到集群**posts**在这里也不存在。 感谢阅读！ 本文已经为您介绍了Manticore Search中的复制功能以及可以用来搭建简单集群的基本命令。