You can call an API to query the index read and write traffic within a period of time.

Prerequisites

A cluster has been created and index monitoring has been enabled.

Procedure

Log in to the CSS management console.
Choose Clusters in the navigation pane. On the Clusters page, locate the target cluster, and click Access Kibana in the Operation column.

Choose Dev Tools in the navigation pane on the left and run the following commands to query the index read and write traffic:

Check read and write traffic of all the indexes.
```
GET  /_cat/monitoring
```
Check read and write traffic of a specific index.
```
GET  /_cat/monitoring/{indexName}
```
{indexName} indicates the name of the index whose read and write traffic you want to check.

Check the read and write traffic of indexes for different periods.

GET _cat/monitoring?begin=1650099461000
GET _cat/monitoring?begin=2022-04-16T08:57:41
GET _cat/monitoring?begin=2022-04-16T08:57:41&end=2022-04-17T08:57:41

**Table 1** Parameter description
Parameter	Mandatory	Description
begin	No	Start time (UTC time) of the monitoring data you want to view. Time format: strict_date_optional_time\|epoch_millis The default start time is five minutes before the current time.
end	No	End time (UTC time) of the monitoring data you want to view. Time format: strict_date_optional_time\|epoch_millis The default end time is the current time.

These parameters cannot be used for system indexes, whose names start with a dot (.).

Information similar to the following is displayed:

index   begin               end                 status pri rep init unassign docs.count docs.deleted store.size pri.store.size delete.rate indexing.rate search.rate
test 2022-03-25T09:46:53.765Z 2022-03-25T09:51:43.767Z yellow  1   1  0    1     9         0      5.9kb        5.9kb         0/s           0/s         0/s

**Table 2** Parameters in the returned information
Parameter	Description
index	Index name
begin	Start time of the monitoring data you queried.
end	End time of the monitoring data you queried.
status	Index status within the queried monitoring interval.
pri	The number of index shards within the queried monitoring interval.
rep	The number of index replicas within the queried monitoring interval.
init	The number of initialized indexes within the queried monitoring interval.
unassign	The number of unallocated indexes within the queried monitoring interval.
docs.count	The number of documents within the queried monitoring interval.
docs.deleted	The number of deleted documents within the queried monitoring interval.
store.size	Index storage size within the queried monitoring interval.
pri.store.size	Size of the primary index shard within the queried monitoring interval.
delete.rate	Number of indexes deleted per second within the queried monitoring interval.
indexing.rate	Number of indexes wrote per second within the queried monitoring interval.
search.rate	Number of indexes queried per second within the queried monitoring interval.

Checking the Index Read and Write Traffic

Prerequisites

Procedure