How to setup replica and shard in clickhouse? - clickhouse

Question

Do you know if there is any web article that can guide me on how to setup replica or shard in ClickHouse? I am not knowledge on ZooKeeper as well, don't know how to get started; most of the article that I read online is about how it works, but I can't find how to setup it.
all these articles do show some settings; however, I don't how to put them together.
For example, I don't know where to put Zoo Keeper configuration...
I read these articles
https://clickhouse.yandex/tutorial.html
https://blog.uiza.io/replicated-vs-distributed-on-clickhouse-part-1/
https://blog.uiza.io/replicated-and-distributed-on-clickhouse-part-2/
https://www.altinity.com/blog/2018/5/10/circular-replication-cluster-topology-in-clickhouse
Set ZooKeeper locations in configuration file
<zookeeper-servers>
<node>
<host>zoo01.yandex.ru</host>
<port>2181</port>
</node>
<node>
<host>zoo02.yandex.ru</host>
<port>2181</port>
</node>
<node>
<host>zoo03.yandex.ru</host>
<port>2181</port>
</node>
</zookeeper-servers>

Answer 1

Zookeeper it's a standalone daemon, you need install it and run it (one instance of zookeeper daemon is enough) after that you need add
<zookeeper-servers>
<node>
<host>zoo01.yourdomain.com</host>
<port>2181</port>
</node>
</zookeeper-servers>
to config on each Clickhouse server
and add remote-servers configuration to each Clickhouse server, i.e.
<remote_servers>
<your_cluster_name>
<shard>
<weight>1</weight>
<internal_replication>true</internal_replication>
<replica>
<host>clickhouse-ru-1.local</host>
<port>9000</port>
</replica>
<replica>
<host>clickhouse-ru-2.local</host>
<port>9000</port>
</replica>
</shard>
<shard>
<weight>1</weight>
<internal_replication>false</internal_replication>
<replica>
<host>clickhouse-eu-1.local</host>
<port>9000</port>
</replica>
<replica>
<host>clickhouse-eu-2.local</host>
<port>9000</port>
</replica>
</shard>
<shard>
<weight>1</weight>
<internal_replication>false</internal_replication>
<replica>
<host>clickhouse-us-1.local</host>
<port>9000</port>
</replica>
<replica>
<host>clickhouse-us-2.local</host>
<port>9000</port>
</replica>
</shard>
</your_cluster_name>
</remote_servers>
after that please read about Distributed table Engine
https://clickhouse.yandex/docs/en/operations/table_engines/distributed/