Warning
Multi-node support is deprecated.
TimescaleDB v2.13 is the last release that includes multi-node support for PostgreSQL versions 13, 14, and 15.
attach_data_node()
CommunityCommunity functions are available under Timescale Community Edition. Click to learn more.Attach a data node to a hypertable. The data node should have been
previously created using add_data_node.
When a distributed hypertable is created, by default it uses all available data nodes for the hypertable, but if a data node is added after a hypertable is created, the data node is not automatically used by existing distributed hypertables.
If you want a hypertable to use a data node that was created later, you must attach the data node to the hypertable using this function.
| Name | Description |
|---|---|
node_name | Name of data node to attach |
hypertable | Name of distributed hypertable to attach node to |
| Name | Description |
|---|---|
if_not_attached | Prevents error if the data node is already attached to the hypertable. A notice is printed that the data node is attached. Defaults to FALSE. |
repartition | Change the partitioning configuration so that all the attached data nodes are used. Defaults to TRUE. |
| Column | Description |
|---|---|
hypertable_id | Hypertable id of the modified hypertable |
node_hypertable_id | Hypertable id on the remote data node |
node_name | Name of the attached data node |
Attach a data node dn3 to a distributed hypertable conditions
previously created with
create_distributed_hypertable.
SELECT * FROM attach_data_node('dn3','conditions');hypertable_id | node_hypertable_id | node_name--------------+--------------------+-------------5 | 3 | dn3(1 row)
Tip
You must add a data node to your distributed database first with add_data_node first before attaching it.
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