Warning:
This version of CockroachDB is no longer supported. For more details, see the Release Support Policy.
Use the SHOW ZONE CONFIGURATIONS statement to view details about existing replication zones.
Synopsis
Required privileges
No privileges are required to list replication zones.
Parameters
| Parameter | Description |
|---|---|
range_name |
The name of the system range for which to show replication zone configurations. |
database_name |
The name of the database for which to show replication zone configurations. |
table_name |
The name of the table for which to show replication zone configurations. |
partition_name |
The name of the partition for which to show replication zone configurations. |
index_name |
The name of the index for which to show replication zone configurations. |
Examples
View all replication zones
> SHOW ALL ZONE CONFIGURATIONS;
zone_name | config_sql
+-------------+-----------------------------------------------------+
.default | ALTER RANGE default CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 3,
| constraints = '[]',
| lease_preferences = '[]'
system | ALTER DATABASE system CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 5,
| constraints = '[]',
| lease_preferences = '[]'
system.jobs | ALTER TABLE system.public.jobs CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 600,
| num_replicas = 5,
| constraints = '[]',
| lease_preferences = '[]'
.meta | ALTER RANGE meta CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 3600,
| num_replicas = 5,
| constraints = '[]',
| lease_preferences = '[]'
.system | ALTER RANGE system CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 5,
| constraints = '[]',
| lease_preferences = '[]'
.liveness | ALTER RANGE liveness CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 600,
| num_replicas = 5,
| constraints = '[]',
| lease_preferences = '[]'
(6 rows)
View the default replication zone for the cluster
> SHOW ZONE CONFIGURATION FOR RANGE default;
zone_name | config_sql
+-----------+------------------------------------------+
.default | ALTER RANGE default CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 3,
| constraints = '[]',
| lease_preferences = '[]'
(1 row)
View the replication zone for a database
> SHOW ZONE CONFIGURATION FOR DATABASE tpch;
zone_name | config_sql
+-----------+------------------------------------------+
tpch | ALTER DATABASE tpch CONFIGURE ZONE USING
| range_min_bytes = 1048576,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 3,
| constraints = '[]',
| lease_preferences = '[]'
(1 row)
View the replication zone for a table
> SHOW ZONE CONFIGURATION FOR TABLE tpch.customer;
zone_name | config_sql
+---------------+-------------------------------------------------------+
tpch.customer | ALTER TABLE tpch.public.customer CONFIGURE ZONE USING
| range_min_bytes = 40000,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 3,
| constraints = '[]',
| lease_preferences = '[]'
(1 row)
View the replication zone for an index
> SHOW ZONE CONFIGURATION FOR INDEX tpch.customer@frequent_customers;
zone_name | config_sql
+---------------+-------------------------------------------------------+
tpch.customer | ALTER TABLE tpch.public.customer CONFIGURE ZONE USING
| range_min_bytes = 40000,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 3,
| constraints = '[]',
| lease_preferences = '[]'
(1 row)
View the replication zone for a table partition
> SHOW ZONE CONFIGURATION FOR PARTITION north_america OF TABLE roachlearn.students;
zone_name | config_sql
+-----------------------------------+------------------------------------------------------------------------------------------------+
roachlearn.students.north_america | ALTER PARTITION north_america OF INDEX roachlearn.public.students@primary CONFIGURE ZONE USING
| range_min_bytes = 16777216,
| range_max_bytes = 67108864,
| gc.ttlseconds = 90000,
| num_replicas = 3,
| constraints = '[+region=us]',
| lease_preferences = '[]'
Yes
No