- Run server
docker run -d --name clickhouse-server -p 9000:9000 --ulimit nofile=262144:262144 yandex/clickhouse-server
- Run client
docker run -it --rm --link clickhouse-server:clickhouse-server yandex/clickhouse-client --host clickhouse-server
Now you can see if it success setup or not.
This part we will setup
- 1 cluster, with 3 shards
- Each shard has 2 replica server
- Use ReplicatedMergeTree & Distributed table to setup our table.
Let's see our docker-compose.yml first.
version: '3'
services:
clickhouse-zookeeper:
image: zookeeper
ports:
- "2181:2181"
- "2182:2182"
container_name: clickhouse-zookeeper
hostname: clickhouse-zookeeper
clickhouse-01:
image: yandex/clickhouse-server
hostname: clickhouse-01
container_name: clickhouse-01
ports:
- 9001:9000
volumes:
- ./config/clickhouse_config.xml:/etc/clickhouse-server/config.xml
- ./config/clickhouse_metrika.xml:/etc/clickhouse-server/metrika.xml
- ./config/macros/macros-01.xml:/etc/clickhouse-server/config.d/macros.xml
# - ./data/server-01:/var/lib/clickhouse
ulimits:
nofile:
soft: 262144
hard: 262144
depends_on:
- "clickhouse-zookeeper"
clickhouse-02:
image: yandex/clickhouse-server
hostname: clickhouse-02
container_name: clickhouse-02
ports:
- 9002:9000
volumes:
- ./config/clickhouse_config.xml:/etc/clickhouse-server/config.xml
- ./config/clickhouse_metrika.xml:/etc/clickhouse-server/metrika.xml
- ./config/macros/macros-02.xml:/etc/clickhouse-server/config.d/macros.xml
# - ./data/server-02:/var/lib/clickhouse
ulimits:
nofile:
soft: 262144
hard: 262144
depends_on:
- "clickhouse-zookeeper"
clickhouse-03:
image: yandex/clickhouse-server
hostname: clickhouse-03
container_name: clickhouse-03
ports:
- 9003:9000
volumes:
- ./config/clickhouse_config.xml:/etc/clickhouse-server/config.xml
- ./config/clickhouse_metrika.xml:/etc/clickhouse-server/metrika.xml
- ./config/macros/macros-03.xml:/etc/clickhouse-server/config.d/macros.xml
# - ./data/server-03:/var/lib/clickhouse
ulimits:
nofile:
soft: 262144
hard: 262144
depends_on:
- "clickhouse-zookeeper"
clickhouse-04:
image: yandex/clickhouse-server
hostname: clickhouse-04
container_name: clickhouse-04
ports:
- 9004:9000
volumes:
- ./config/clickhouse_config.xml:/etc/clickhouse-server/config.xml
- ./config/clickhouse_metrika.xml:/etc/clickhouse-server/metrika.xml
- ./config/macros/macros-04.xml:/etc/clickhouse-server/config.d/macros.xml
# - ./data/server-04:/var/lib/clickhouse
ulimits:
nofile:
soft: 262144
hard: 262144
depends_on:
- "clickhouse-zookeeper"
clickhouse-05:
image: yandex/clickhouse-server
hostname: clickhouse-05
container_name: clickhouse-05
ports:
- 9005:9000
volumes:
- ./config/clickhouse_config.xml:/etc/clickhouse-server/config.xml
- ./config/clickhouse_metrika.xml:/etc/clickhouse-server/metrika.xml
- ./config/macros/macros-05.xml:/etc/clickhouse-server/config.d/macros.xml
# - ./data/server-05:/var/lib/clickhouse
ulimits:
nofile:
soft: 262144
hard: 262144
depends_on:
- "clickhouse-zookeeper"
clickhouse-06:
image: yandex/clickhouse-server
hostname: clickhouse-06
container_name: clickhouse-06
ports:
- 9006:9000
volumes:
- ./config/clickhouse_config.xml:/etc/clickhouse-server/config.xml
- ./config/clickhouse_metrika.xml:/etc/clickhouse-server/metrika.xml
- ./config/macros/macros-06.xml:/etc/clickhouse-server/config.d/macros.xml
# - ./data/server-06:/var/lib/clickhouse
ulimits:
nofile:
soft: 262144
hard: 262144
depends_on:
- "clickhouse-zookeeper"
networks:
default:
external:
name: clickhouse-net
We have 6 clickhouse server container and one zookeeper container.
To enable replication ZooKeeper is required. ClickHouse will take care of data consistency on all replicas and run restore procedure after failure automatically. It's recommended to deploy ZooKeeper cluster to separate servers.
ZooKeeper is not a requirement — in some simple cases you can duplicate the data by writing it into all the replicas from your application code. This approach is not recommended — in this case ClickHouse is not able to guarantee data consistency on all replicas. This remains the responsibility of your application.
Let's see config file.
./config/clickhouse_config.xml is the default config file in docker, we copy it out and add this line
<!-- If element has 'incl' attribute, then for it's value will be used corresponding substitution from another file.
By default, path to file with substitutions is /etc/metrika.xml. It could be changed in config in 'include_from' element.
Values for substitutions are specified in /yandex/name_of_substitution elements in that file.
-->
<include_from>/etc/clickhouse-server/metrika.xml</include_from>
So lets see metrika.xml
<yandex>
<clickhouse_remote_servers>
<cluster_1>
<shard>
<weight>1</weight>
<internal_replication>true</internal_replication>
<replica>
<host>clickhouse-01</host>
<port>9000</port>
</replica>
<replica>
<host>clickhouse-06</host>
<port>9000</port>
</replica>
</shard>
<shard>
<weight>1</weight>
<internal_replication>true</internal_replication>
<replica>
<host>clickhouse-02</host>
<port>9000</port>
</replica>
<replica>
<host>clickhouse-03</host>
<port>9000</port>
</replica>
</shard>
<shard>
<weight>1</weight>
<internal_replication>true</internal_replication>
<replica>
<host>clickhouse-04</host>
<port>9000</port>
</replica>
<replica>
<host>clickhouse-05</host>
<port>9000</port>
</replica>
</shard>
</cluster_1>
</clickhouse_remote_servers>
<zookeeper-servers>
<node index="1">
<host>clickhouse-zookeeper</host>
<port>2181</port>
</node>
</zookeeper-servers>
<networks>
<ip>::/0</ip>
</networks>
<clickhouse_compression>
<case>
<min_part_size>10000000000</min_part_size>
<min_part_size_ratio>0.01</min_part_size_ratio>
<method>lz4</method>
</case>
</clickhouse_compression>
</yandex>
and macros.xml, each instances has there own macros settings, like server 1:
<yandex>
<macros>
<replica>clickhouse-01</replica>
<shard>01</shard>
<layer>01</layer>
</macros>
</yandex>
Make sure your macros settings is equal to remote server settings in metrika.xml
So now you can start the server.
docker network create clickhouse-net
docker-compose up -d
Conn to server and see if the cluster settings fine;
docker run -it --rm --network="clickhouse-net" --link clickhouse-01:clickhouse-server yandex/clickhouse-client --host clickhouse-server
clickhouse-01 :) select * from system.clusters;
SELECT *
FROM system.clusters
┌─cluster─────────────────────┬─shard_num─┬─shard_weight─┬─replica_num─┬─host_name─────┬─host_address─┬─port─┬─is_local─┬─user────┬─default_database─┐
│ cluster_1 │ 1 │ 1 │ 1 │ clickhouse-01 │ 172.21.0.4 │ 9000 │ 1 │ default │ │
│ cluster_1 │ 1 │ 1 │ 2 │ clickhouse-06 │ 172.21.0.5 │ 9000 │ 1 │ default │ │
│ cluster_1 │ 2 │ 1 │ 1 │ clickhouse-02 │ 172.21.0.8 │ 9000 │ 0 │ default │ │
│ cluster_1 │ 2 │ 1 │ 2 │ clickhouse-03 │ 172.21.0.6 │ 9000 │ 0 │ default │ │
│ cluster_1 │ 3 │ 1 │ 1 │ clickhouse-04 │ 172.21.0.7 │ 9000 │ 0 │ default │ │
│ cluster_1 │ 3 │ 1 │ 2 │ clickhouse-05 │ 172.21.0.3 │ 9000 │ 0 │ default │ │
│ test_shard_localhost │ 1 │ 1 │ 1 │ localhost │ 127.0.0.1 │ 9000 │ 1 │ default │ │
│ test_shard_localhost_secure │ 1 │ 1 │ 1 │ localhost │ 127.0.0.1 │ 9440 │ 0 │ default │ │
└─────────────────────────────┴───────────┴──────────────┴─────────────┴───────────────┴──────────────┴──────┴──────────┴─────────┴──────────────────┘If you see this, it means cluster's settings work well(but not conn fine).
So now we have a cluster and replica settings. For clickhouse, we need to create ReplicatedMergeTree Table as a local table in every server.
CREATE TABLE ttt (id Int32) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{layer}-{shard}/ttt', '{replica}') PARTITION BY id ORDER BY idand Create Distributed Table conn to local table
CREATE TABLE ttt_all as ttt ENGINE = Distributed(cluster_1, default, ttt, rand());gen some data and test.
# docker exec into client server 1 and
for ((idx=1;idx<=100;++idx)); do clickhouse-client --host clickhouse-server --query "Insert into default.ttt_all values ($idx)"; done;
For Distributed table.
select count(*) from ttt_all;
For loacl table.
select count(*) from ttt;
Please see config/users.xml
- Conn
docker run -it --rm --network="clickhouse-net" --link clickhouse-01:clickhouse-server yandex/clickhouse-client --host clickhouse-server -u user1 --password 123456