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The SHOW CLUSTER SETTING statement displays the values of cluster settings.
To configure cluster settings, use SET CLUSTER SETTING.
Note:
The SHOW statement for cluster settings is unrelated to the other SHOW statements: SHOW {session variable}, SHOW CREATE, SHOW USERS, SHOW DATABASES, SHOW COLUMNS, SHOW GRANTS, and SHOW CONSTRAINTS.
Details
To display the value of a specific cluster setting, use the following syntax:
SHOW CLUSTER SETTING <setting>;To display the values of public cluster settings (i.e., cluster settings that are documented and for which tuning is supported), use one of the following:
SHOW CLUSTER SETTINGS;SHOW PUBLIC CLUSTER SETTINGS;To display the values of all cluster settings use one of the following:
SHOW ALL CLUSTER SETTINGS;SHOW CLUSTER SETTING ALL;When you display all cluster settings, the table output includes a
publiccolumn that denotes whether a setting is public or not.
Required privileges
To use the SHOW CLUSTER SETTING statement, a user must have one of the following attributes:
- Be a member of the
adminrole (therootuser belongs to theadminrole by default). - Have the
MODIFYCLUSTERSETTINGsystem-level privilege granted. - Have the
VIEWCLUSTERSETTINGsystem-level privilege (or the legacyVIEWCLUSTERSETTINGrole option) defined. - Have the
MODIFYSQLCLUSTERSETTINGsystem-level privilege granted. Users with this privilege are allowed to view onlysql.defaults.*cluster settings, not all cluster settings.
Synopsis
Parameters
| Parameter | Description |
|---|---|
var_name |
The name of the cluster setting (case-insensitive). |
ALL |
Display all cluster settings. |
PUBLIC |
Display only the public cluster settings. By default, only public settings are listed by SHOW CLUSTER SETTINGS. SHOW PUBLIC CLUSTER SETTINGS and SHOW CLUSTER SETTINGS are equivalent. |
Response
When you query multiple cluster settings (e.g., with SHOW CLUSTER SETTINGS, or with SHOW ALL CLUSTER SETTINGS), the following fields are returned:
| Field | Description |
|---|---|
variable |
The name of the cluster setting. |
value |
The value of the cluster setting. |
setting_type |
The type of the cluster setting. Possible values for setting_type include:
|
description |
A brief description of the cluster setting, including possible values. |
public |
true if the cluster setting is public.This field is only included if all cluster settings are displayed. |
default_value |
The default value of the cluster setting. |
origin |
The origin of the current value of the cluster setting. Possible values for origin include:
|
Examples
Show the value of a single cluster setting
> SHOW CLUSTER SETTING diagnostics.reporting.enabled;
diagnostics.reporting.enabled
---------------------------------
true
(1 row)
Show the values of all public cluster settings
> SHOW CLUSTER SETTINGS;
variable | value | setting_type | description
-------------------------------------------------+-------+--------------+---------------------------------------------------------------------------------------------------------------
admission.kv.enabled | false | b | when true, work performed by the KV layer is subject to admission control
admission.sql_kv_response.enabled | false | b | when true, work performed by the SQL layer when receiving a KV response is subject to admission control
admission.sql_sql_response.enabled | false | b | when true, work performed by the SQL layer when receiving a DistSQL response is subject to admission control
bulkio.stream_ingestion.minimum_flush_interval | 5s | d | the minimum timestamp between flushes; flushes may still occur if internal buffers fill up
...
Show the values of all cluster settings
> SHOW ALL CLUSTER SETTINGS;
variable | value | setting_type | public | description
--------------------------------------------------+-------+--------------+--------+--------------------------------------------------------------------------------------------------------------------------------------
admission.kv.enabled | false | b | true | when true, work performed by the KV layer is subject to admission control
admission.kv_slot_adjuster.overload_threshold | 32 | i | false | when the number of runnable goroutines per CPU is greater than this threshold, the slot adjuster considers the cpu to be overloaded
admission.l0_file_count_overload_threshold | 1000 | i | false | when the L0 file count exceeds this threshold, the store is considered overloaded
admission.l0_sub_level_count_overload_threshold | 20 | i | false | when the L0 sub-level count exceeds this threshold, the store is considered overloaded
...
See also
SET CLUSTER SETTINGRESET CLUSTER SETTING- Cluster settings
SHOW {session variable}SHOW COLUMNSSHOW CONSTRAINTSSHOW CREATESHOW DATABASESSHOW GRANTSSHOW INDEXSHOW USERS
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