ClickHouse/docs/en/system_tables/system.clusters.md
2018-03-26 17:00:55 +03:00

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system.clusters

Contains information about clusters available in the config file and the servers in them. Columns:

cluster String       Cluster name.
shard_num UInt32     Number of a shard in the cluster, starting from 1.
shard_weight UInt32  Relative weight of a shard when writing data.
replica_num UInt32   Number of a replica in the shard, starting from 1.
host_name String     Host name as specified in the config.
host_address String  Host's IP address obtained from DNS.
port UInt16         The port used to access the server.
user String         The username to use for connecting to the server.