The current stable HTTP API is reachable under /api/v1 on a Prometheus
server. Any non-breaking additions will be added under that endpoint.
The API response format is JSON. Every successful API request returns a 2xx
status code.
Invalid requests that reach the API handlers return a JSON error object and one of the following HTTP response codes:
400 Bad Request when parameters are missing or incorrect.422 Unprocessable Entity when an expression can't be executed
(RFC4918).503 Service Unavailable when queries time out or abort.Other non-2xx codes may be returned for errors occurring before the API
endpoint is reached.
An array of warnings may be returned if there are errors that do not inhibit the request execution. An additional array of info-level annotations may be returned for potential query issues that may or may not be false positives. All of the data that was successfully collected will be returned in the data field.
The JSON response envelope format is as follows:
{
"status": "success" | "error",
"data": <data>,
// Only set if status is "error". The data field may still hold
// additional data.
"errorType": "<string>",
"error": "<string>",
// Only set if there were warnings while executing the request.
// There will still be data in the data field.
"warnings": ["<string>"],
// Only set if there were info-level annnotations while executing the request.
"infos": ["<string>"]
}
Generic placeholders are defined as follows:
<rfc3339 | unix_timestamp>: Input timestamps may be provided either in
RFC3339 format or as a Unix timestamp
in seconds, with optional decimal places for sub-second precision. Output
timestamps are always represented as Unix timestamps in seconds.<series_selector>: Prometheus time series
selectors like http_requests_total or
http_requests_total{method=~"(GET|POST)"} and need to be URL-encoded.<duration>: the subset of Prometheus float literals using time units.
For example, 5m refers to a duration of 5 minutes.<bool>: boolean values (strings true and false).Note: Names of query parameters that may be repeated end with [].
Query language expressions may be evaluated at a single instant or over a range of time. The sections below describe the API endpoints for each type of expression query.
The following endpoint evaluates an instant query at a single point in time:
GET /api/v1/query
POST /api/v1/query
URL query parameters:
query=<string>: Prometheus expression query string.time=<rfc3339 | unix_timestamp>: Evaluation timestamp. Optional.timeout=<duration>: Evaluation timeout. Optional. Defaults to and
is capped by the value of the -query.timeout flag.The current server time is used if the time parameter is omitted.
You can URL-encode these parameters directly in the request body by using the POST method and
Content-Type: application/x-www-form-urlencoded header. This is useful when specifying a large
query that may breach server-side URL character limits.
The data section of the query result has the following format:
{
"resultType": "matrix" | "vector" | "scalar" | "string",
"result": <value>
}
<value> refers to the query result data, which has varying formats
depending on the resultType. See the expression query result
formats.
The following example evaluates the expression up at the time
2015-07-01T20:10:51.781Z:
$ curl 'http://localhost:9090/api/v1/query?query=up&time=2015-07-01T20:10:51.781Z'
{
"status" : "success",
"data" : {
"resultType" : "vector",
"result" : [
{
"metric" : {
"__name__" : "up",
"job" : "prometheus",
"instance" : "localhost:9090"
},
"value": [ 1435781451.781, "1" ]
},
{
"metric" : {
"__name__" : "up",
"job" : "node",
"instance" : "localhost:9100"
},
"value" : [ 1435781451.781, "0" ]
}
]
}
}
The following endpoint evaluates an expression query over a range of time:
GET /api/v1/query_range
POST /api/v1/query_range
URL query parameters:
query=<string>: Prometheus expression query string.start=<rfc3339 | unix_timestamp>: Start timestamp, inclusive.end=<rfc3339 | unix_timestamp>: End timestamp, inclusive.step=<duration | float>: Query resolution step width in duration format or float number of seconds.timeout=<duration>: Evaluation timeout. Optional. Defaults to and
is capped by the value of the -query.timeout flag.You can URL-encode these parameters directly in the request body by using the POST method and
Content-Type: application/x-www-form-urlencoded header. This is useful when specifying a large
query that may breach server-side URL character limits.
The data section of the query result has the following format:
{
"resultType": "matrix",
"result": <value>
}
For the format of the <value> placeholder, see the range-vector result
format.
The following example evaluates the expression up over a 30-second range with
a query resolution of 15 seconds.
$ curl 'http://localhost:9090/api/v1/query_range?query=up&start=2015-07-01T20:10:30.781Z&end=2015-07-01T20:11:00.781Z&step=15s'
{
"status" : "success",
"data" : {
"resultType" : "matrix",
"result" : [
{
"metric" : {
"__name__" : "up",
"job" : "prometheus",
"instance" : "localhost:9090"
},
"values" : [
[ 1435781430.781, "1" ],
[ 1435781445.781, "1" ],
[ 1435781460.781, "1" ]
]
},
{
"metric" : {
"__name__" : "up",
"job" : "node",
"instance" : "localhost:9091"
},
"values" : [
[ 1435781430.781, "0" ],
[ 1435781445.781, "0" ],
[ 1435781460.781, "1" ]
]
}
]
}
}
The following endpoint formats a PromQL expression in a prettified way:
GET /api/v1/format_query
POST /api/v1/format_query
URL query parameters:
query=<string>: Prometheus expression query string.You can URL-encode these parameters directly in the request body by using the POST method and
Content-Type: application/x-www-form-urlencoded header. This is useful when specifying a large
query that may breach server-side URL character limits.
The data section of the query result is a string containing the formatted query expression. Note that any comments are removed in the formatted string.
The following example formats the expression foo/bar:
$ curl 'http://localhost:9090/api/v1/format_query?query=foo/bar'
{
"status" : "success",
"data" : "foo / bar"
}
This endpoint is experimental and might change in the future. It is currently only meant to be used by Prometheus' own web UI, and the endpoint name and exact format returned may change from one Prometheus version to another. It may also be removed again in case it is no longer needed by the UI.
The following endpoint parses a PromQL expression and returns it as a JSON-formatted AST (abstract syntax tree) representation:
GET /api/v1/parse_query
POST /api/v1/parse_query
URL query parameters:
query=<string>: Prometheus expression query string.You can URL-encode these parameters directly in the request body by using the POST method and
Content-Type: application/x-www-form-urlencoded header. This is useful when specifying a large
query that may breach server-side URL character limits.
The data section of the query result is a string containing the AST of the parsed query expression.
The following example parses the expression foo/bar:
$ curl 'http://localhost:9090/api/v1/parse_query?query=foo/bar'
{
"data" : {
"bool" : false,
"lhs" : {
"matchers" : [
{
"name" : "__name__",
"type" : "=",
"value" : "foo"
}
],
"name" : "foo",
"offset" : 0,
"startOrEnd" : null,
"timestamp" : null,
"type" : "vectorSelector"
},
"matching" : {
"card" : "one-to-one",
"include" : [],
"labels" : [],
"on" : false
},
"op" : "/",
"rhs" : {
"matchers" : [
{
"name" : "__name__",
"type" : "=",
"value" : "bar"
}
],
"name" : "bar",
"offset" : 0,
"startOrEnd" : null,
"timestamp" : null,
"type" : "vectorSelector"
},
"type" : "binaryExpr"
},
"status" : "success"
}
Prometheus offers a set of API endpoints to query metadata about series and their labels.
The following endpoint returns the list of time series that match a certain label set.
GET /api/v1/series
POST /api/v1/series
URL query parameters:
match[]=<series_selector>: Repeated series selector argument that selects the
series to return. At least one match[] argument must be provided.start=<rfc3339 | unix_timestamp>: Start timestamp.end=<rfc3339 | unix_timestamp>: End timestamp.limit=<number>: Maximum number of returned series. Optional. 0 means disabled.You can URL-encode these parameters directly in the request body by using the POST method and
Content-Type: application/x-www-form-urlencoded header. This is useful when specifying a large
or dynamic number of series selectors that may breach server-side URL character limits.
The data section of the query result consists of a list of objects that
contain the label name/value pairs which identify each series.
The following example returns all series that match either of the selectors
up or process_start_time_seconds{job="prometheus"}:
$ curl -g 'http://localhost:9090/api/v1/series?' --data-urlencode 'match[]=up' --data-urlencode 'match[]=process_start_time_seconds{job="prometheus"}'
{
"status" : "success",
"data" : [
{
"__name__" : "up",
"job" : "prometheus",
"instance" : "localhost:9090"
},
{
"__name__" : "up",
"job" : "node",
"instance" : "localhost:9091"
},
{
"__name__" : "process_start_time_seconds",
"job" : "prometheus",
"instance" : "localhost:9090"
}
]
}
The following endpoint returns a list of label names:
GET /api/v1/labels
POST /api/v1/labels
URL query parameters:
start=<rfc3339 | unix_timestamp>: Start timestamp. Optional.end=<rfc3339 | unix_timestamp>: End timestamp. Optional.match[]=<series_selector>: Repeated series selector argument that selects the
series from which to read the label names. Optional.limit=<number>: Maximum number of returned series. Optional. 0 means disabled.The data section of the JSON response is a list of string label names.
Here is an example.
$ curl 'localhost:9090/api/v1/labels'
{
"status": "success",
"data": [
"__name__",
"call",
"code",
"config",
"dialer_name",
"endpoint",
"event",
"goversion",
"handler",
"instance",
"interval",
"job",
"le",
"listener_name",
"name",
"quantile",
"reason",
"role",
"scrape_job",
"slice",
"version"
]
}
The following endpoint returns a list of label values for a provided label name:
GET /api/v1/label/<label_name>/values
URL query parameters:
start=<rfc3339 | unix_timestamp>: Start timestamp. Optional.end=<rfc3339 | unix_timestamp>: End timestamp. Optional.match[]=<series_selector>: Repeated series selector argument that selects the
series from which to read the label values. Optional.limit=<number>: Maximum number of returned series. Optional. 0 means disabled.The data section of the JSON response is a list of string label values.
This example queries for all label values for the job label:
$ curl http://localhost:9090/api/v1/label/job/values
{
"status" : "success",
"data" : [
"node",
"prometheus"
]
}
This is experimental and might change in the future. The following endpoint returns a list of exemplars for a valid PromQL query for a specific time range:
GET /api/v1/query_exemplars
POST /api/v1/query_exemplars
URL query parameters:
query=<string>: Prometheus expression query string.start=<rfc3339 | unix_timestamp>: Start timestamp.end=<rfc3339 | unix_timestamp>: End timestamp.$ curl -g 'http://localhost:9090/api/v1/query_exemplars?query=test_exemplar_metric_total&start=2020-09-14T15:22:25.479Z&end=2020-09-14T15:23:25.479Z'
{
"status": "success",
"data": [
{
"seriesLabels": {
"__name__": "test_exemplar_metric_total",
"instance": "localhost:8090",
"job": "prometheus",
"service": "bar"
},
"exemplars": [
{
"labels": {
"trace_id": "EpTxMJ40fUus7aGY"
},
"value": "6",
"timestamp": 1600096945.479
}
]
},
{
"seriesLabels": {
"__name__": "test_exemplar_metric_total",
"instance": "localhost:8090",
"job": "prometheus",
"service": "foo"
},
"exemplars": [
{
"labels": {
"trace_id": "Olp9XHlq763ccsfa"
},
"value": "19",
"timestamp": 1600096955.479
},
{
"labels": {
"trace_id": "hCtjygkIHwAN9vs4"
},
"value": "20",
"timestamp": 1600096965.489
}
]
}
]
}
Expression queries may return the following response values in the result
property of the data section. <sample_value> placeholders are numeric
sample values. JSON does not support special float values such as NaN, Inf,
and -Inf, so sample values are transferred as quoted JSON strings rather than
raw numbers.
The keys "histogram" and "histograms" only show up if the experimental
native histograms are present in the response. Their placeholder <histogram>
is explained in detail in its own section below.
Range vectors are returned as result type matrix. The corresponding
result property has the following format:
[
{
"metric": { "<label_name>": "<label_value>", ... },
"values": [ [ <unix_time>, "<sample_value>" ], ... ],
"histograms": [ [ <unix_time>, <histogram> ], ... ]
},
...
]
Each series could have the "values" key, or the "histograms" key, or both.
For a given timestamp, there will only be one sample of either float or histogram type.
Series are returned sorted by metric. Functions such as sort
and sort_by_label have no effect for range vectors.
Instant vectors are returned as result type vector. The corresponding
result property has the following format:
[
{
"metric": { "<label_name>": "<label_value>", ... },
"value": [ <unix_time>, "<sample_value>" ],
"histogram": [ <unix_time>, <histogram> ]
},
...
]
Each series could have the "value" key, or the "histogram" key, but not both.
Series are not guaranteed to be returned in any particular order unless a function
such as sort or sort_by_label
is used.
Scalar results are returned as result type scalar. The corresponding
result property has the following format:
[ <unix_time>, "<scalar_value>" ]
String results are returned as result type string. The corresponding
result property has the following format:
[ <unix_time>, "<string_value>" ]
The <histogram> placeholder used above is formatted as follows.
Note that native histograms are an experimental feature, and the format below might still change.
{
"count": "<count_of_observations>",
"sum": "<sum_of_observations>",
"buckets": [ [ <boundary_rule>, "<left_boundary>", "<right_boundary>", "<count_in_bucket>" ], ... ]
}
The <boundary_rule> placeholder is an integer between 0 and 3 with the
following meaning:
Note that with the currently implemented bucket schemas, positive buckets are “open left”, negative buckets are “open right”, and the zero bucket (with a negative left boundary and a positive right boundary) is “closed both”.
The following endpoint returns an overview of the current state of the Prometheus target discovery:
GET /api/v1/targets
Both the active and dropped targets are part of the response by default.
Dropped targets are subject to keep_dropped_targets limit, if set.
labels represents the label set after relabeling has occurred.
discoveredLabels represent the unmodified labels retrieved during service discovery before relabeling has occurred.
$ curl http://localhost:9090/api/v1/targets
{
"status": "success",
"data": {
"activeTargets": [
{
"discoveredLabels": {
"__address__": "127.0.0.1:9090",
"__metrics_path__": "/metrics",
"__scheme__": "http",
"job": "prometheus"
},
"labels": {
"instance": "127.0.0.1:9090",
"job": "prometheus"
},
"scrapePool": "prometheus",
"scrapeUrl": "http://127.0.0.1:9090/metrics",
"globalUrl": "http://example-prometheus:9090/metrics",
"lastError": "",
"lastScrape": "2017-01-17T15:07:44.723715405+01:00",
"lastScrapeDuration": 0.050688943,
"health": "up",
"scrapeInterval": "1m",
"scrapeTimeout": "10s"
}
],
"droppedTargets": [
{
"discoveredLabels": {
"__address__": "127.0.0.1:9100",
"__metrics_path__": "/metrics",
"__scheme__": "http",
"__scrape_interval__": "1m",
"__scrape_timeout__": "10s",
"job": "node"
},
}
]
}
}
The state query parameter allows the caller to filter by active or dropped targets,
(e.g., state=active, state=dropped, state=any).
Note that an empty array is still returned for targets that are filtered out.
Other values are ignored.
$ curl 'http://localhost:9090/api/v1/targets?state=active'
{
"status": "success",
"data": {
"activeTargets": [
{
"discoveredLabels": {
"__address__": "127.0.0.1:9090",
"__metrics_path__": "/metrics",
"__scheme__": "http",
"job": "prometheus"
},
"labels": {
"instance": "127.0.0.1:9090",
"job": "prometheus"
},
"scrapePool": "prometheus",
"scrapeUrl": "http://127.0.0.1:9090/metrics",
"globalUrl": "http://example-prometheus:9090/metrics",
"lastError": "",
"lastScrape": "2017-01-17T15:07:44.723715405+01:00",
"lastScrapeDuration": 50688943,
"health": "up"
}
],
"droppedTargets": []
}
}
The scrapePool query parameter allows the caller to filter by scrape pool name.
$ curl 'http://localhost:9090/api/v1/targets?scrapePool=node_exporter'
{
"status": "success",
"data": {
"activeTargets": [
{
"discoveredLabels": {
"__address__": "127.0.0.1:9091",
"__metrics_path__": "/metrics",
"__scheme__": "http",
"job": "node_exporter"
},
"labels": {
"instance": "127.0.0.1:9091",
"job": "node_exporter"
},
"scrapePool": "node_exporter",
"scrapeUrl": "http://127.0.0.1:9091/metrics",
"globalUrl": "http://example-prometheus:9091/metrics",
"lastError": "",
"lastScrape": "2017-01-17T15:07:44.723715405+01:00",
"lastScrapeDuration": 50688943,
"health": "up"
}
],
"droppedTargets": []
}
}
The /rules API endpoint returns a list of alerting and recording rules that
are currently loaded. In addition it returns the currently active alerts fired
by the Prometheus instance of each alerting rule.
As the /rules endpoint is fairly new, it does not have the same stability
guarantees as the overarching API v1.
GET /api/v1/rules
URL query parameters:
type=alert|record: return only the alerting rules (e.g. type=alert) or the recording rules (e.g. type=record). When the parameter is absent or empty, no filtering is done.rule_name[]=<string>: only return rules with the given rule name. If the parameter is repeated, rules with any of the provided names are returned. If we've filtered out all the rules of a group, the group is not returned. When the parameter is absent or empty, no filtering is done.rule_group[]=<string>: only return rules with the given rule group name. If the parameter is repeated, rules with any of the provided rule group names are returned. When the parameter is absent or empty, no filtering is done.file[]=<string>: only return rules with the given filepath. If the parameter is repeated, rules with any of the provided filepaths are returned. When the parameter is absent or empty, no filtering is done.exclude_alerts=<bool>: only return rules, do not return active alerts.match[]=<label_selector>: only return rules that have configured labels that satisfy the label selectors. If the parameter is repeated, rules that match any of the sets of label selectors are returned. Note that matching is on the labels in the definition of each rule, not on the values after template expansion (for alerting rules). Optional.group_limit=<number>: The group_limit parameter allows you to specify a limit for the number of rule groups that is returned in a single response. If the total number of rule groups exceeds the specified group_limit value, the response will include a groupNextToken property. You can use the value of this groupNextToken property in subsequent requests in the group_next_token parameter to paginate over the remaining rule groups. The groupNextToken property will not be present in the final response, indicating that you have retrieved all the available rule groups. Please note that there are no guarantees regarding the consistency of the response if the rule groups are being modified during the pagination process.group_next_token: the pagination token that was returned in previous request when the group_limit property is set. The pagination token is used to iteratively paginate over a large number of rule groups. To use the group_next_token parameter, the group_limit parameter also need to be present. If a rule group that coincides with the next token is removed while you are paginating over the rule groups, a response with status code 400 will be returned.$ curl http://localhost:9090/api/v1/rules
{
"data": {
"groups": [
{
"rules": [
{
"alerts": [
{
"activeAt": "2018-07-04T20:27:12.60602144+02:00",
"annotations": {
"summary": "High request latency"
},
"labels": {
"alertname": "HighRequestLatency",
"severity": "page"
},
"state": "firing",
"value": "1e+00"
}
],
"annotations": {
"summary": "High request latency"
},
"duration": 600,
"health": "ok",
"labels": {
"severity": "page"
},
"name": "HighRequestLatency",
"query": "job:request_latency_seconds:mean5m{job=\"myjob\"} > 0.5",
"type": "alerting"
},
{
"health": "ok",
"name": "job:http_inprogress_requests:sum",
"query": "sum by (job) (http_inprogress_requests)",
"type": "recording"
}
],
"file": "/rules.yaml",
"interval": 60,
"limit": 0,
"name": "example"
}
]
},
"status": "success"
}
The /alerts endpoint returns a list of all active alerts.
As the /alerts endpoint is fairly new, it does not have the same stability
guarantees as the overarching API v1.
GET /api/v1/alerts
$ curl http://localhost:9090/api/v1/alerts
{
"data": {
"alerts": [
{
"activeAt": "2018-07-04T20:27:12.60602144+02:00",
"annotations": {},
"labels": {
"alertname": "my-alert"
},
"state": "firing",
"value": "1e+00"
}
]
},
"status": "success"
}
The following endpoint returns metadata about metrics currently scraped from targets. This is experimental and might change in the future.
GET /api/v1/targets/metadata
URL query parameters:
match_target=<label_selectors>: Label selectors that match targets by their label sets. All targets are selected if left empty.metric=<string>: A metric name to retrieve metadata for. All metric metadata is retrieved if left empty.limit=<number>: Maximum number of targets to match.The data section of the query result consists of a list of objects that
contain metric metadata and the target label set.
The following example returns all metadata entries for the go_goroutines metric
from the first two targets with label job="prometheus".
curl -G http://localhost:9091/api/v1/targets/metadata \
--data-urlencode 'metric=go_goroutines' \
--data-urlencode 'match_target={job="prometheus"}' \
--data-urlencode 'limit=2'
{
"status": "success",
"data": [
{
"target": {
"instance": "127.0.0.1:9090",
"job": "prometheus"
},
"type": "gauge",
"help": "Number of goroutines that currently exist.",
"unit": ""
},
{
"target": {
"instance": "127.0.0.1:9091",
"job": "prometheus"
},
"type": "gauge",
"help": "Number of goroutines that currently exist.",
"unit": ""
}
]
}
The following example returns metadata for all metrics for all targets with
label instance="127.0.0.1:9090".
curl -G http://localhost:9091/api/v1/targets/metadata \
--data-urlencode 'match_target={instance="127.0.0.1:9090"}'
{
"status": "success",
"data": [
// ...
{
"target": {
"instance": "127.0.0.1:9090",
"job": "prometheus"
},
"metric": "prometheus_treecache_zookeeper_failures_total",
"type": "counter",
"help": "The total number of ZooKeeper failures.",
"unit": ""
},
{
"target": {
"instance": "127.0.0.1:9090",
"job": "prometheus"
},
"metric": "prometheus_tsdb_reloads_total",
"type": "counter",
"help": "Number of times the database reloaded block data from disk.",
"unit": ""
},
// ...
]
}
It returns metadata about metrics currently scraped from targets. However, it does not provide any target information. This is considered experimental and might change in the future.
GET /api/v1/metadata
URL query parameters:
limit=<number>: Maximum number of metrics to return.limit_per_metric=<number>: Maximum number of metadata to return per metric.metric=<string>: A metric name to filter metadata for. All metric metadata is retrieved if left empty.The data section of the query result consists of an object where each key is a metric name and each value is a list of unique metadata objects, as exposed for that metric name across all targets.
The following example returns two metrics. Note that the metric http_requests_total has more than one object in the list. At least one target has a value for HELP that do not match with the rest.
curl -G http://localhost:9090/api/v1/metadata?limit=2
{
"status": "success",
"data": {
"cortex_ring_tokens": [
{
"type": "gauge",
"help": "Number of tokens in the ring",
"unit": ""
}
],
"http_requests_total": [
{
"type": "counter",
"help": "Number of HTTP requests",
"unit": ""
},
{
"type": "counter",
"help": "Amount of HTTP requests",
"unit": ""
}
]
}
}
The following example returns only one metadata entry for each metric.
curl -G http://localhost:9090/api/v1/metadata?limit_per_metric=1
{
"status": "success",
"data": {
"cortex_ring_tokens": [
{
"type": "gauge",
"help": "Number of tokens in the ring",
"unit": ""
}
],
"http_requests_total": [
{
"type": "counter",
"help": "Number of HTTP requests",
"unit": ""
}
]
}
}
The following example returns metadata only for the metric http_requests_total.
curl -G http://localhost:9090/api/v1/metadata?metric=http_requests_total
{
"status": "success",
"data": {
"http_requests_total": [
{
"type": "counter",
"help": "Number of HTTP requests",
"unit": ""
},
{
"type": "counter",
"help": "Amount of HTTP requests",
"unit": ""
}
]
}
}
The following endpoint returns an overview of the current state of the Prometheus alertmanager discovery:
GET /api/v1/alertmanagers
Both the active and dropped Alertmanagers are part of the response.
$ curl http://localhost:9090/api/v1/alertmanagers
{
"status": "success",
"data": {
"activeAlertmanagers": [
{
"url": "http://127.0.0.1:9090/api/v1/alerts"
}
],
"droppedAlertmanagers": [
{
"url": "http://127.0.0.1:9093/api/v1/alerts"
}
]
}
}
Following status endpoints expose current Prometheus configuration.
The following endpoint returns currently loaded configuration file:
GET /api/v1/status/config
The config is returned as dumped YAML file. Due to limitation of the YAML library, YAML comments are not included.
$ curl http://localhost:9090/api/v1/status/config
{
"status": "success",
"data": {
"yaml": "<content of the loaded config file in YAML>",
}
}
The following endpoint returns flag values that Prometheus was configured with:
GET /api/v1/status/flags
All values are of the result type string.
$ curl http://localhost:9090/api/v1/status/flags
{
"status": "success",
"data": {
"alertmanager.notification-queue-capacity": "10000",
"alertmanager.timeout": "10s",
"log.level": "info",
"query.lookback-delta": "5m",
"query.max-concurrency": "20",
...
}
}
New in v2.2
The following endpoint returns various runtime information properties about the Prometheus server:
GET /api/v1/status/runtimeinfo
The returned values are of different types, depending on the nature of the runtime property.
$ curl http://localhost:9090/api/v1/status/runtimeinfo
{
"status": "success",
"data": {
"startTime": "2019-11-02T17:23:59.301361365+01:00",
"CWD": "/",
"reloadConfigSuccess": true,
"lastConfigTime": "2019-11-02T17:23:59+01:00",
"timeSeriesCount": 873,
"corruptionCount": 0,
"goroutineCount": 48,
"GOMAXPROCS": 4,
"GOGC": "",
"GODEBUG": "",
"storageRetention": "15d"
}
}
New in v2.14
The following endpoint returns various build information properties about the Prometheus server:
GET /api/v1/status/buildinfo
All values are of the result type string.
$ curl http://localhost:9090/api/v1/status/buildinfo
{
"status": "success",
"data": {
"version": "2.13.1",
"revision": "cb7cbad5f9a2823a622aaa668833ca04f50a0ea7",
"branch": "master",
"buildUser": "julius@desktop",
"buildDate": "20191102-16:19:59",
"goVersion": "go1.13.1"
}
}
New in v2.14
The following endpoint returns various cardinality statistics about the Prometheus TSDB:
GET /api/v1/status/tsdb
URL query parameters:
limit=<number>: Limit the number of returned items to a given number for each set of statistics. By default, 10 items are returned.The data section of the query result consists of:
$ curl http://localhost:9090/api/v1/status/tsdb
{
"status": "success",
"data": {
"headStats": {
"numSeries": 508,
"chunkCount": 937,
"minTime": 1591516800000,
"maxTime": 1598896800143,
},
"seriesCountByMetricName": [
{
"name": "net_conntrack_dialer_conn_failed_total",
"value": 20
},
{
"name": "prometheus_http_request_duration_seconds_bucket",
"value": 20
}
],
"labelValueCountByLabelName": [
{
"name": "__name__",
"value": 211
},
{
"name": "event",
"value": 3
}
],
"memoryInBytesByLabelName": [
{
"name": "__name__",
"value": 8266
},
{
"name": "instance",
"value": 28
}
],
"seriesCountByLabelValuePair": [
{
"name": "job=prometheus",
"value": 425
},
{
"name": "instance=localhost:9090",
"value": 425
}
]
}
}
New in v2.15
The following endpoint returns information about the WAL replay:
GET /api/v1/status/walreplay
$ curl http://localhost:9090/api/v1/status/walreplay
{
"status": "success",
"data": {
"min": 2,
"max": 5,
"current": 40,
"state": "in progress"
}
}
New in v2.28
These are APIs that expose database functionalities for the advanced user. These APIs are not enabled unless the --web.enable-admin-api is set.
Snapshot creates a snapshot of all current data into snapshots/<datetime>-<rand> under the TSDB's data directory and returns the directory as response.
It will optionally skip snapshotting data that is only present in the head block, and which has not yet been compacted to disk.
POST /api/v1/admin/tsdb/snapshot
PUT /api/v1/admin/tsdb/snapshot
URL query parameters:
skip_head=<bool>: Skip data present in the head block. Optional.$ curl -XPOST http://localhost:9090/api/v1/admin/tsdb/snapshot
{
"status": "success",
"data": {
"name": "20171210T211224Z-2be650b6d019eb54"
}
}
The snapshot now exists at <data-dir>/snapshots/20171210T211224Z-2be650b6d019eb54
New in v2.1 and supports PUT from v2.9
DeleteSeries deletes data for a selection of series in a time range. The actual data still exists on disk and is cleaned up in future compactions or can be explicitly cleaned up by hitting the Clean Tombstones endpoint.
If successful, a 204 is returned.
POST /api/v1/admin/tsdb/delete_series
PUT /api/v1/admin/tsdb/delete_series
URL query parameters:
match[]=<series_selector>: Repeated label matcher argument that selects the series to delete. At least one match[] argument must be provided.start=<rfc3339 | unix_timestamp>: Start timestamp. Optional and defaults to minimum possible time.end=<rfc3339 | unix_timestamp>: End timestamp. Optional and defaults to maximum possible time.Not mentioning both start and end times would clear all the data for the matched series in the database.
Example:
$ curl -X POST \
-g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]=up&match[]=process_start_time_seconds{job="prometheus"}'
New in v2.1 and supports PUT from v2.9
CleanTombstones removes the deleted data from disk and cleans up the existing tombstones. This can be used after deleting series to free up space.
If successful, a 204 is returned.
POST /api/v1/admin/tsdb/clean_tombstones
PUT /api/v1/admin/tsdb/clean_tombstones
This takes no parameters or body.
$ curl -XPOST http://localhost:9090/api/v1/admin/tsdb/clean_tombstones
New in v2.1 and supports PUT from v2.9
Prometheus can be configured as a receiver for the Prometheus remote write protocol. This is not considered an efficient way of ingesting samples. Use it with caution for specific low-volume use cases. It is not suitable for replacing the ingestion via scraping and turning Prometheus into a push-based metrics collection system.
Enable the remote write receiver by setting
--web.enable-remote-write-receiver. When enabled, the remote write receiver
endpoint is /api/v1/write. Find more details here.
New in v2.33
Prometheus can be configured as a receiver for the OTLP Metrics protocol. This is not considered an efficient way of ingesting samples. Use it with caution for specific low-volume use cases. It is not suitable for replacing the ingestion via scraping.
Enable the OTLP receiver by setting
--web.enable-otlp-receiver. When enabled, the OTLP receiver
endpoint is /api/v1/otlp/v1/metrics.
New in v2.47
The following endpoints provide information about active status notifications concerning the Prometheus server itself. Notifications are used in the web UI.
These endpoints are experimental. They may change in the future.
The /api/v1/notifications endpoint returns a list of all currently active notifications.
GET /api/v1/notifications
Example:
$ curl http://localhost:9090/api/v1/notifications
{
"status": "success",
"data": [
{
"text": "Prometheus is shutting down and gracefully stopping all operations.",
"date": "2024-10-07T12:33:08.551376578+02:00",
"active": true
}
]
}
New in v3.0
The /api/v1/notifications/live endpoint streams live notifications as they occur, using Server-Sent Events. Deleted notifications are sent with active: false. Active notifications will be sent when connecting to the endpoint.
GET /api/v1/notifications/live
Example:
$ curl http://localhost:9090/api/v1/notifications/live
data: {
"status": "success",
"data": [
{
"text": "Prometheus is shutting down and gracefully stopping all operations.",
"date": "2024-10-07T12:33:08.551376578+02:00",
"active": true
}
]
}
Note: The /notifications/live endpoint will return a 204 No Content response if the maximum number of subscribers has been reached. You can set the maximum number of listeners with the flag --web.max-notifications-subscribers, which defaults to 16.
GET /api/v1/notifications/live
204 No Content
New in v3.0
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