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Prometheus query metricset
editPrometheus query metricset
editThis is the query metricset to query from querying API of Prometheus.
Configuration
editInstant queries
editThe following configuration performs an instant query for up metric at a single point in time:
- module: prometheus
period: 10s
hosts: ["localhost:9090"]
metricsets: ["query"]
queries:
- name: 'up'
path: '/api/v1/query'
params:
query: "up"
More complex PromQL expressions can also be used like the following one which calculates the per-second rate of HTTP requests as measured over the last 5 minutes.
- module: prometheus
period: 10s
hosts: ["localhost:9090"]
metricsets: ["query"]
queries:
- name: "rate_http_requests_total"
path: "/api/v1/query"
params:
query: "rate(prometheus_http_requests_total[5m])"
Range queries
editThe following example evaluates the expression up over a 30-second range with a query resolution of 15 seconds:
- module: prometheus
period: 10s
metricsets: ["query"]
hosts: ["node:9100"]
queries:
- name: "up_master"
path: "/api/v1/query_range"
params:
query: "up{node='master01'}"
start: "2019-12-20T23:30:30.000Z"
end: "2019-12-21T23:31:00.000Z"
step: 15s
For a description of each field in the metricset, see the exported fields section.
Here is an example document generated by this metricset:
{
"@timestamp": "2017-10-12T08:05:34.853Z",
"event": {
"dataset": "prometheus.query",
"duration": 115000,
"module": "prometheus"
},
"metricset": {
"name": "query",
"period": 10000
},
"prometheus": {
"labels": {
"__name__": "go_threads",
"instance": "localhost:9090",
"job": "prometheus"
},
"query": {
"go_threads": 18
}
},
"service": {
"address": "localhost:32769",
"type": "prometheus"
}
}