ClickHouse cluster configuration
How do I grant a user permissions to create and delete tables or databases?
Go to the cluster settings, enable the Managing users via SQL option, and grant a user the appropriate permissions using a statementGRANT
.
How do I find out the internal_replication setting value?
The internal_replication
setting information is not available in the Nebius AI interfaces or the ClickHouse system tables. The default setting value is true
.
How do I increase the maximum amount of RAM to run a query?
If the amount of RAM is not sufficient for running a query, the following error occurs:
DB::Exception: Memory limit (total) exceeded:
would use 14.10 GiB (attempt to allocate chunk of 4219924 bytes), maximum: 14.10 GiB.
(MEMORY_LIMIT_EXCEEDED), Stack trace (when copying this message, always include the lines below)
To increase the maximum amount of RAM, use the Max memory usage parameter.
If the User management via SQL option is enabled for the cluster, you can set the Max memory usage
parameter:
-
For the current user session by running this query:
SET max_memory_usage = <value in bytes>;
-
For all users by default by creating a settings profile
.