120 lines
3.8 KiB
Go
120 lines
3.8 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package controller
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import (
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"k8s.io/ingress-nginx/internal/ingress"
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)
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const (
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ns = "ingress_controller"
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operation = "count"
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reloadLabel = "reloads"
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sslLabelExpire = "ssl_expire_time_seconds"
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sslLabelHost = "host"
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)
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func init() {
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prometheus.MustRegister(reloadOperation)
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prometheus.MustRegister(reloadOperationErrors)
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prometheus.MustRegister(sslExpireTime)
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prometheus.MustRegister(configSuccess)
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prometheus.MustRegister(configSuccessTime)
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}
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var (
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configSuccess = prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: ns,
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Name: "config_last_reload_successfull",
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Help: `Whether the last configuration reload attemp was successful.
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Prometheus alert example:
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alert: IngressControllerFailedReload
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expr: ingress_controller_config_last_reload_successfull == 0
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for: 10m`,
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})
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configSuccessTime = prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: ns,
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Name: "config_last_reload_successfull_timestamp_seconds",
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Help: "Timestamp of the last successful configuration reload.",
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})
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// TODO depreciate this metrics in favor of ingress_controller_config_last_reload_successfull_timestamp_seconds
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reloadOperation = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Namespace: ns,
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Name: "success",
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Help: `DEPRECATED: use ingress_controller_config_last_reload_successfull_timestamp_seconds or ingress_controller_config_last_reload_successfull instead.
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Cumulative number of Ingress controller reload operations`,
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},
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[]string{operation},
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)
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// TODO depreciate this metrics in favor of ingress_controller_config_last_reload_successfull_timestamp_seconds
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reloadOperationErrors = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Namespace: ns,
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Name: "errors",
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Help: `DEPRECATED: use ingress_controller_config_last_reload_successfull_timestamp_seconds or ingress_controller_config_last_reload_successfull instead.
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Cumulative number of Ingress controller errors during reload operations`,
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},
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[]string{operation},
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)
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sslExpireTime = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: ns,
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Name: sslLabelExpire,
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Help: "Number of seconds since 1970 to the SSL Certificate expire. An example to check if this " +
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"certificate will expire in 10 days is: \"ingress_controller_ssl_expire_time_seconds < (time() + (10 * 24 * 3600))\"",
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},
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[]string{sslLabelHost},
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)
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)
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// IncReloadCount increment the reload counter
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func IncReloadCount() {
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reloadOperation.WithLabelValues(reloadLabel).Inc()
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}
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// IncReloadErrorCount increment the reload error counter
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func IncReloadErrorCount() {
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reloadOperationErrors.WithLabelValues(reloadLabel).Inc()
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}
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// ConfigSuccess set a boolean flag according to the output of the controller configuration reload
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func ConfigSuccess(success bool) {
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if success {
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ConfigSuccessTime()
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configSuccess.Set(1)
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} else {
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configSuccess.Set(0)
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}
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}
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// ConfigSuccessTime set the current timestamp when the controller is successfully reloaded
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func ConfigSuccessTime() {
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configSuccessTime.Set(float64(time.Now().Unix()))
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}
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func setSSLExpireTime(servers []*ingress.Server) {
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for _, s := range servers {
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if s.Hostname != defServerName {
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sslExpireTime.WithLabelValues(s.Hostname).Set(float64(s.SSLExpireTime.Unix()))
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}
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}
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}
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