Relabeling can be applied at the following stages: at scrape_configs->relabel_configs section for transforming per-scrape target labels and dropping unneeded scrape targets At my company there is a CLI tool we'll call pquery that allows prometheus metrics to be queried from the command line, and it outputs JSON–how conventient! 1. Any non-breaking additions will be added under that endpoint. Ad hoc filters variable. I use this tool in the following examples. Getting the label values in production. In 1.16 k8s deprecated the label kubernetes.io/role: worker I had previously been using as a filter to target graphs to specific node role using this in my grafana variables declaration label_values( Annotations allow you to overlay rich event information on top of graphs. Relabeling in Prometheus and VictoriaMetrics is quite powerful. We recently merged #12597 which will be released in Grafana v5.3. Looking at the docs, I came up with the following query for the variable: label_values(rate({foo=~"bar"}, baz) To do this, our first step is to somehow reduce this down to something with one metric point per user, with no other labels. It allows performing arbitrary transformations on metric names, label names and label values. It allows you to specify any number of label/value filters on the fly. Try to avoid using label_values(, ) it sends request to Prometheus endpoint /api/v1/series which is not cached and can be very expensive if there is lot of series matching that query. Use the query_result(query) instead and extract the values using regex. Prometheus supports the special ad hoc filters variable type. to get the number of all DE orders. calculate the sums by country. *, so that character’s length is very less in the query. In Prometheus terms, we want to count the number of distinct label values in vpn_user_sessions for the 'user' label, which I will shorten to the number of distinct labels. The current stable HTTP API is reachable under /api/v1 on a Prometheus server. Prometheus Metrics ¶ We recently merged #12597 which will be released in Grafana v5.3. ... Querying label values. Use the query_result(query) instead and extract the values using regex. A better option might be to tell Prometheus to respect selected labels when aggregating, e.g. This query returns the overall number of orders created within the last 5 minutes, ignoring all the different label values. At a high level, a relabel_config allows you to select one or more source label values that can be concatenated using a separator parameter. The label_values function is something specific for Grafana (not prometheus) and we have no plans at the moment to extend that to support full queries. We can combine sum with some label expressions, e.g. Annotations. The label_values function is something specific for Grafana (not prometheus) and we have no plans at the moment to extend that to support full queries. The result can then be matched against using a regex, and an action operation can be performed if a match occurs. These filters are automatically applied to all your Prometheus queries. There might be other metrics having the required label. Based on the label values, instances can be differentiated easily - this is important for data filter; Metrics will be collected from exporters but won’t be saved on exporters. I want to create a query variable in grafana using Loki that returns all the possible label values of the label baz such that they only include label values that exist where the label foo equals "bar". You can filter series using Prometheus’s relabel_config configuration object. Query = label_values(prometheus), here it means I want all the label values names prometheus(bad choice for federation though) Multi-value= Enabled, because it let the users select more than one value of the vars like “dev” + “qa” + “stg” + “prod” Custom all value= . Use it only for metrics with small cardinality.

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