Prometheus query metricset
This is the query metricset to query from querying API of Prometheus.
The 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])"
The 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"
}
}