metrics

Retrieves metrics events from a Tenzir node.

Synopsis

metrics [--live] [--retro] [<name>]

Description

The metrics operator retrieves metrics events from a Tenzir node. Metrics events are collected every second.

--live

Work on all metrics events as they are generated in real-time instead of on metrics events persisted at a Tenzir node.

--retro

Work on persisted diagnostic events (first), even when --live is given.

See export operator for more details.

<name>

Show only metrics with the specified name. For example, metrics cpu only shows CPU metrics.

Schemas

Tenzir collects metrics with the following schemas.

tenzir.metrics.api

Contains information about all accessed API endpoints, emitted once per second.

Field	Type	Description
timestamp	time	The time at which the API request was received.
request_id	string	The unique request ID assigned by the Tenzir Platform.
method	double	The HTTP method used to access the API.
path	double	The path of the accessed API endpoint.
response_time	duration	The time the API endpoint took to respond.
status_code	uint64	The HTTP status code of the API response.
params	record	The API endpoints parameters passed inused.

The schema of the record params depends on the API endpoint used. Refer to the API documentation to see the available parameters per endpoint.

tenzir.metrics.buffer

Contains information about the buffer operator's internal buffer.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the buffer operator in the pipeline.
used	uint64	The number of events stored in the buffer.
free	uint64	The remaining capacity of the buffer.
dropped	uint64	The number of events dropped by the buffer.

tenzir.metrics.cpu

Contains a measurement of CPU utilization.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
loadavg_1m	double	The load average over the last minute.
loadavg_5m	double	The load average over the last 5 minutes.
loadavg_15m	double	The load average over the last 15 minutes.

tenzir.metrics.disk

Contains a measurement of disk space usage.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
path	string	The byte measurements below refer to the filesystem on which this path is located.
total_bytes	uint64	The total size of the volume, in bytes.
used_bytes	uint64	The number of bytes occupied on the volume.
free_bytes	uint64	The number of bytes still free on the volume.

tenzir.metrics.enrich

Contains a measurement the enrich operator, emitted once every second.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the enrich operator in the pipeline.
context	string	The name of the context the associated operator is using.
events	uint64	The amount of input events that entered the enrich operator since the last metric.
hits	uint64	The amount of successfully enriched events since the last metric.

tenzir.metrics.export

Contains a measurement the export operator, emitted once every second per schema. Note that internal events like metrics or diagnostics do not emit metrics themselves.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the export operator in the pipeline.
schema	string	The schema name of the batch.
schema_id	string	The schema ID of the batch.
events	uint64	The amount of events that were imported.
queued_events	uint64	The total amount of events that are enqueued in the export.

tenzir.metrics.import

Contains a measurement the import operator, emitted once every second per schema. Note that internal events like metrics or diagnostics do not emit metrics themselves.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the import operator in the pipeline.
schema	string	The schema name of the batch.
schema_id	string	The schema ID of the batch.
events	uint64	The amount of events that were imported.

tenzir.metrics.ingest

Contains a measurement of all data ingested into the database, emitted once per second and schema.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
schema	string	The schema name of the batch.
schema_id	string	The schema ID of the batch.
events	uint64	The amount of events that were ingested.

tenzir.metrics.lookup

Contains a measurement of the lookup operator, emitted once every second.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the lookup operator in the pipeline.
context	string	The name of the context the associated operator is using.
live	record	Information about the live lookup.
retro	record	Information about the retroactive lookup.
context_updates	uint64	The amount of times the underlying context has been updated while the associated lookup is active.

The record live has the following schema:

Field	Type	Description
events	uint64	The amount of input events used for the live lookup since the last metric.
hits	uint64	The amount of live lookup matches since the last metric.

The record retro has the following schema:

Field	Type	Description
events	uint64	The amount of input events used for the lookup since the last metric.
hits	uint64	The amount of lookup matches since the last metric.
queued_events	uint64	The total amount of events that were in the queue for the lookup.

tenzir.metrics.memory

Contains a measurement of the available memory on the host.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
total_bytes	uint64	The total available memory, in bytes.
used_bytes	uint64	The amount of memory used, in bytes.
free_bytes	uint64	The amount of free memory, in bytes.

tenzir.metrics.operator

Contains input and output measurements over some amount of time for a single operator instantiation.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time when this event was emitted (immediately after the collection period).
operator_id	uint64	The ID of the operator inside the pipeline referenced above.
source	bool	True if this is the first operator in the pipeline.
transformation	bool	True if this is neither the first nor the last operator.
sink	bool	True if this is the last operator in the pipeline.
internal	bool	True if the data flow is considered to internal to Tenzir.
duration	duration	The timespan over which this data was collected.
starting_duration	duration	The time spent to start the operator.
processing_duration	duration	The time spent processing the data.
scheduled_duration	duration	The time that the operator was scheduled.
running_duration	duration	The time that the operator was running.
paused_duration	duration	The time that the operator was paused.
input	record	Measurement of the incoming data stream.
output	record	Measurement of the outgoing data stream.

The records input and output have the following schema:

Field	Type	Description
unit	string	The type of the elements, which is void, bytes or events.
elements	uint64	Number of elements that were seen during the collection period.
approx_bytes	uint64	An approximation for the number of bytes transmitted.

tenzir.metrics.platform

Signals whether the connection to the Tenzir Platform is working from the node's perspective. Emitted once per second.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
connected	bool	The connection status.

tenzir.metrics.process

Contains a measurement of the amount of memory used by the tenzir-node process.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
current_memory_usage	uint64	The memory currently used by this process.
peak_memory_usage	uint64	The peak amount of memory, in bytes.
swap_space_usage	uint64	The amount of swap space, in bytes. Only available on Linux systems.
open_fds	uint64	The amount of open file descriptors by the node. Only available on Linux systems.

tenzir.metrics.publish

Contains a measurement of the publish operator, emitted once every second per schema.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the publish operator in the pipeline.
topic	string	The topic name.
schema	string	The schema name of the batch.
schema_id	string	The schema ID of the batch.
events	uint64	The amount of events that were published to the topic.

tenzir.metrics.rebuild

Contains a measurement of the partition rebuild process, emitted once every second.

Field	Type	Description
timestamp	time	The time at which this metric was recorded.
partitions	uint64	The number of partitions currently being rebuilt.
queued_partitions	uint64	The number of partitions currently queued for rebuilding.

tenzir.metrics.subscribe

Contains a measurement of the subscribe operator, emitted once every second per schema.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the subscribe operator in the pipeline.
topic	string	The topic name.
schema	string	The schema name of the batch.
schema_id	string	The schema ID of the batch.
events	uint64	The amount of events that were retrieved from the topic.

tenzir.metrics.tcp

Contains measurements about the number of read calls and the received bytes per TCP connection.

Field	Type	Description
pipeline_id	string	The ID of the pipeline where the associated operator is from.
run	uint64	The number of the run, starting at 1 for the first run.
hidden	bool	True if the pipeline is running for the explorer.
timestamp	time	The time at which this metric was recorded.
operator_id	uint64	The ID of the publish operator in the pipeline.
native	string	The native handle of the connection (unix: file descriptor).
reads	uint64	The number of attempted reads since the last metric.
writes	uint64	The number of attempted writes since the last metric.
bytes_read	uint64	The number of bytes received since the last metrics.
bytes_written	uint64	The number of bytes written since the last metrics.

Examples

Show the CPU usage over the last hour:

metrics
| where #schema == "tenzir.metrics.cpu"
| where timestamp > 1 hour ago
| put timestamp, percent=loadavg_1m

Output

{
  "timestamp": "2023-12-21T12:00:32.631102",
  "percent": 0.40478515625
}
{
  "timestamp": "2023-12-21T11:59:32.626043",
  "percent": 0.357421875
}
{
  "timestamp": "2023-12-21T11:58:32.620327",
  "percent": 0.42578125
}
{
  "timestamp": "2023-12-21T11:57:32.614810",
  "percent": 0.50390625
}
{
  "timestamp": "2023-12-21T11:56:32.609896",
  "percent": 0.32080078125
}
{
  "timestamp": "2023-12-21T11:55:32.605871",
  "percent": 0.5458984375
}

Get the current memory usage:

metrics
| where #schema == "tenzir.metrics.memory"
| sort timestamp desc
| tail 1
| put current_memory_usage

Output

{
  "current_memory_usage": 1083031552
}

Show the total pipeline ingress in bytes for every day over the last week, excluding pipelines run in the Explorer:

metrics
| where #schema == "tenzir.metrics.operator"
| where timestamp > 1 week ago
| where hidden == false and source == true
| summarize bytes=sum(output.approx_bytes) by timestamp resolution 1 day

Output

{
  "timestamp": "2023-11-08T00:00:00.000000",
  "bytes": 79927223
}
{
  "timestamp": "2023-11-09T00:00:00.000000",
  "bytes": 51788928
}
{
  "timestamp": "2023-11-10T00:00:00.000000",
  "bytes": 80740352
}
{
  "timestamp": "2023-11-11T00:00:00.000000",
  "bytes": 75497472
}
{
  "timestamp": "2023-11-12T00:00:00.000000",
  "bytes": 55497472
}
{
  "timestamp": "2023-11-13T00:00:00.000000",
  "bytes": 76546048
}
{
  "timestamp": "2023-11-14T00:00:00.000000",
  "bytes": 68643200
}

Show the three operator instantiations that produced the most events in total and their pipeline IDs:

metrics
| where #schema == "tenzir.metrics.operator"
| where output.unit == "events"
| summarize events=max(output.elements) by pipeline_id, operator_id
| sort events desc
| head 3

Output

{
  "pipeline_id": "70a25089-b16c-448d-9492-af5566789b99",
  "operator_id": 0,
  "events": 391008694
}
{
  "pipeline_id": "7842733c-06d6-4713-9b80-e20944927207",
  "operator_id": 0,
  "events": 246914949
}
{
  "pipeline_id": "6df003be-0841-45ad-8be0-56ff4b7c19ef",
  "operator_id": 1,
  "events": 83013294
}

Get the disk usage over time:

metrics
| where #schema == "tenzir.metrics.disk"
| sort timestamp
| put timestamp, used_bytes

Output

{
  "timestamp": "2023-12-21T12:52:32.900086",
  "used_bytes": 461834444800
}
{
  "timestamp": "2023-12-21T12:53:32.905548",
  "used_bytes": 461834584064
}
{
  "timestamp": "2023-12-21T12:54:32.910918",
  "used_bytes": 461840302080
}
{
  "timestamp": "2023-12-21T12:55:32.916200",
  "used_bytes": 461842751488
}

Get the memory usage over time:

metrics
| where #schema == "tenzir.metrics.memory"
| sort timestamp
| put timestamp, used_bytes

Output

{
  "timestamp": "2023-12-21T13:08:32.982083",
  "used_bytes": 48572645376
}
{
  "timestamp": "2023-12-21T13:09:32.986962",
  "used_bytes": 48380682240
}
{
  "timestamp": "2023-12-21T13:10:32.992494",
  "used_bytes": 48438878208
}
{
  "timestamp": "2023-12-21T13:11:32.997889",
  "used_bytes": 48491839488
}
{
  "timestamp": "2023-12-21T13:12:33.003323",
  "used_bytes": 48529952768
}

Get inbound TCP traffic over time:

metrics tcp
| sort timestamp
| put timestamp, port, handle, reads, bytes

Output

{
  "timestamp": "2024-09-04T15:43:38.011350",
  "port": 10000,
  "handle": "12",
  "reads": 884,
  "writes": 0,
  "bytes_read": 10608,
  "bytes_written": 0
}
{
  "timestamp": "2024-09-04T15:43:39.013575",
  "port": 10000,
  "handle": "12",
  "reads": 428,
  "writes": 0,
  "bytes_read": 5136,
  "bytes_written": 0
}
{
  "timestamp": "2024-09-04T15:43:40.015376",
  "port": 10000,
  "handle": "12",
  "reads": 429,
  "writes": 0,
  "bytes_read": 5148,
  "bytes_written": 0
}