unkin-agent
9da206dc7c
PVCs and CloudNativePG Clusters need S3 buckets and backup schedules
provisioned consistently. This operator watches the
backups.unkin.net/{schedule,destination} annotations on those objects and
provisions everything needed to back them up, with no new CRDs.
- Add a PVC controller that provisions cephrgw ObjectStoreUser/Bucket/BucketAccess,
auto-generates a restic repo-password Secret and creates a k8up Schedule scoped
to the PVC via spec.backup.volumes[].persistentVolumeClaim.claimName.
- Add a CNPG Cluster controller that provisions the same bucket stack, idempotently
patches spec.backup.barmanObjectStore (leaving a user-set destinationPath alone
with a Warning event) and creates a ScheduledBackup.
- Resolve destinations through a ConfigMap lookup table; requeue until the
BucketAccess is Ready before creating schedule resources; own-reference created
resources and retain bucket data by default.
- Add schedule-mapping helpers (k8up 5-field/shortcut pass-through, CNPG 6-field
seconds-first) and deterministic, length-bounded name derivation.
- Add unit tests (schedule mapping, name derivation, destination resolution) and
envtest controller tests for both paths, wiring the external CRDs into envtest.
- Add kubebuilder-generated RBAC, a Dockerfile (distroless/nonroot), Woodpecker
lint/test/build pipelines and a tag-triggered image push to the artifactapi
docker-internal registry, plus a version-bump Makefile and deploy manifests.
48 lines
1.6 KiB
Go
48 lines
1.6 KiB
Go
package metrics
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import (
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"github.com/prometheus/client_golang/prometheus"
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"k8s.io/client-go/tools/leaderelection"
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)
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// This file is copied and adapted from k8s.io/component-base/metrics/prometheus/clientgo/leaderelection
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// which registers metrics to the k8s legacy Registry. We require very
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// similar functionality, but must register metrics to a different Registry.
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var (
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leaderGauge = prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Name: "leader_election_master_status",
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Help: "Gauge of if the reporting system is master of the relevant lease, 0 indicates backup, 1 indicates master. 'name' is the string used to identify the lease. Please make sure to group by name.",
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}, []string{"name"})
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leaderSlowpathCounter = prometheus.NewCounterVec(prometheus.CounterOpts{
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Name: "leader_election_slowpath_total",
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Help: "Total number of slow path exercised in renewing leader leases. 'name' is the string used to identify the lease. Please make sure to group by name.",
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}, []string{"name"})
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)
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func init() {
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Registry.MustRegister(leaderGauge)
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leaderelection.SetProvider(leaderelectionMetricsProvider{})
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}
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type leaderelectionMetricsProvider struct{}
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func (leaderelectionMetricsProvider) NewLeaderMetric() leaderelection.LeaderMetric {
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return leaderElectionPrometheusAdapter{}
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}
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type leaderElectionPrometheusAdapter struct{}
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func (s leaderElectionPrometheusAdapter) On(name string) {
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leaderGauge.WithLabelValues(name).Set(1.0)
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}
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func (s leaderElectionPrometheusAdapter) Off(name string) {
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leaderGauge.WithLabelValues(name).Set(0.0)
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}
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func (leaderElectionPrometheusAdapter) SlowpathExercised(name string) {
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leaderSlowpathCounter.WithLabelValues(name).Inc()
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}
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