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Advanced Configuration

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This commit introduces advanced configuration.  The rate-interval and
label-prefix flags are removed, and replaced by a configuration file
that allows you to specify series queries and the rules for transforming
those into metrics queries and API resources.
This commit is contained in:
Solly Ross 2018-02-12 17:35:32 -05:00
parent c22681a91d
commit 2984604be8
12 changed files with 1082 additions and 548 deletions
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92
pkg/config/default.go Normal file
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package config
import (
"fmt"
"time"
prom "github.com/directxman12/k8s-prometheus-adapter/pkg/client"
pmodel "github.com/prometheus/common/model"
)
// DefaultConfig returns a configuration equivalent to the former
// pre-advanced-config settings. This means that "normal" series labels
// will be of the form `<prefix>${.Resource}$`, cadvisor series will be
// of the form `container_`, and have the label `pod_name`. Any series ending
// in total will be treated as a rate metric.
func DefaultConfig(rateInterval time.Duration, labelPrefix string) *MetricsDiscoveryConfig {
return &MetricsDiscoveryConfig{
Rules: []DiscoveryRule{
// container seconds rate metrics
{
SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))),
Resources: ResourceMapping{
Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"},
},
},
Name: NameMapping{Matches: "^container_(.*)_seconds_total$"},
MetricsQuery: fmt.Sprintf(`sum(rate(${.Series}${${.LabelMatchers}$,container_name!="POD"}[%s])) by (${.GroupBy}$)`, pmodel.Duration(rateInterval).String()),
},
// container rate metrics
{
SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))),
SeriesFilters: []RegexFilter{{IsNot: "^container_.*_seconds_total$"}},
Resources: ResourceMapping{
Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"},
},
},
Name: NameMapping{Matches: "^container_(.*)_total$"},
MetricsQuery: fmt.Sprintf(`sum(rate(${.Series}${${.LabelMatchers}$,container_name!="POD"}[%s])) by (${.GroupBy}$)`, pmodel.Duration(rateInterval).String()),
},
// container non-cumulative metrics
{
SeriesQuery: string(prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))),
SeriesFilters: []RegexFilter{{IsNot: "^container_.*_total$"}},
Resources: ResourceMapping{
Overrides: map[string]GroupResource{
"namespace": {Resource: "namespace"},
"pod_name": {Resource: "pod"},
},
},
Name: NameMapping{Matches: "^container_(.*)$"},
MetricsQuery: `sum(${.Series}${${.LabelMatchers}$,container_name!="POD"}) by (${.GroupBy}$)`,
},
// normal non-cumulative metrics
{
SeriesQuery: string(prom.MatchSeries("", prom.LabelNeq(fmt.Sprintf("%snamespace", labelPrefix), ""), prom.NameNotMatches("^container_.*"))),
SeriesFilters: []RegexFilter{{IsNot: ".*_total$"}},
Resources: ResourceMapping{
Template: fmt.Sprintf("%s${.Resource}$", labelPrefix),
},
MetricsQuery: "sum(${.Series}${${.LabelMatchers}$}) by (${.GroupBy}$)",
},
// normal rate metrics
{
SeriesQuery: string(prom.MatchSeries("", prom.LabelNeq(fmt.Sprintf("%snamespace", labelPrefix), ""), prom.NameNotMatches("^container_.*"))),
SeriesFilters: []RegexFilter{{IsNot: ".*_seconds_total"}},
Name: NameMapping{Matches: "^(.*)_total$"},
Resources: ResourceMapping{
Template: fmt.Sprintf("%s${.Resource}$", labelPrefix),
},
MetricsQuery: fmt.Sprintf("sum(rate(${.Series}${${.LabelMatchers}$}[%s])) by (${.GroupBy}$)", pmodel.Duration(rateInterval).String()),
},
// seconds rate metrics
{
SeriesQuery: string(prom.MatchSeries("", prom.LabelNeq(fmt.Sprintf("%snamespace", labelPrefix), ""), prom.NameNotMatches("^container_.*"))),
Name: NameMapping{Matches: "^(.*)_seconds_total$"},
Resources: ResourceMapping{
Template: fmt.Sprintf("%s${.Resource}$", labelPrefix),
},
MetricsQuery: fmt.Sprintf("sum(rate(${.Series}${${.LabelMatchers}$}[%s])) by (${.GroupBy}$)", pmodel.Duration(rateInterval).String()),
},
},
}
}