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Add a helper to generate legacy configuration

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This moves the DefaultConfig method out into a helper to generate legacy
configuration.  Passing in a config file is now required.
This commit is contained in:
Solly Ross 2018-06-22 12:01:58 -04:00
parent ad1837e9b5
commit 40a9ee2474
9 changed files with 150 additions and 40 deletions
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2
pkg/config/config.go
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@ -19,7 +19,7 @@ type DiscoveryRule struct {
// that can't be represented in the SeriesQuery (e.g. series matching `container_.+`
// not matching `container_.+_total`. A filter will be automatically appended to
// match the form specified in Name.
SeriesFilters []RegexFilter `yaml:"seriesFilter"`
SeriesFilters []RegexFilter `yaml:"seriesFilters"`
// Resources specifies how associated Kubernetes resources should be discovered for
// the given metrics.
Resources ResourceMapping `yaml:"resources"`

92
pkg/config/default.go
View file

@ -1,92 +0,0 @@
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()),
},
},
}
}