277 lines
8.7 KiB
Go
277 lines
8.7 KiB
Go
// Copyright 2013 Prometheus Team
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package main
|
|
|
|
import (
|
|
"flag"
|
|
"os"
|
|
"os/signal"
|
|
"sync"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/golang/glog"
|
|
"github.com/prometheus/client_golang/extraction"
|
|
|
|
clientmodel "github.com/prometheus/client_golang/model"
|
|
registry "github.com/prometheus/client_golang/prometheus"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/notification"
|
|
"github.com/prometheus/prometheus/retrieval"
|
|
"github.com/prometheus/prometheus/rules/manager"
|
|
"github.com/prometheus/prometheus/storage/local"
|
|
"github.com/prometheus/prometheus/storage/remote"
|
|
"github.com/prometheus/prometheus/storage/remote/opentsdb"
|
|
"github.com/prometheus/prometheus/web"
|
|
"github.com/prometheus/prometheus/web/api"
|
|
)
|
|
|
|
const deletionBatchSize = 100
|
|
|
|
// Commandline flags.
|
|
var (
|
|
configFile = flag.String("configFile", "prometheus.conf", "Prometheus configuration file name.")
|
|
metricsStoragePath = flag.String("metricsStoragePath", "/tmp/metrics", "Base path for metrics storage.")
|
|
|
|
alertmanagerUrl = flag.String("alertmanager.url", "", "The URL of the alert manager to send notifications to.")
|
|
|
|
remoteTSDBUrl = flag.String("storage.remote.url", "", "The URL of the OpenTSDB instance to send samples to.")
|
|
remoteTSDBTimeout = flag.Duration("storage.remote.timeout", 30*time.Second, "The timeout to use when sending samples to OpenTSDB.")
|
|
|
|
samplesQueueCapacity = flag.Int("storage.queue.samplesCapacity", 4096, "The size of the unwritten samples queue.")
|
|
diskAppendQueueCapacity = flag.Int("storage.queue.diskAppendCapacity", 1000000, "The size of the queue for items that are pending writing to disk.")
|
|
memoryAppendQueueCapacity = flag.Int("storage.queue.memoryAppendCapacity", 10000, "The size of the queue for items that are pending writing to memory.")
|
|
|
|
deleteInterval = flag.Duration("delete.interval", 11*time.Hour, "The amount of time between deletion of old values.")
|
|
|
|
deleteAge = flag.Duration("delete.ageMaximum", 15*24*time.Hour, "The relative maximum age for values before they are deleted.")
|
|
|
|
memoryEvictionInterval = flag.Duration("storage.memory.evictionInterval", 15*time.Minute, "The period at which old data is evicted from memory.")
|
|
memoryRetentionPeriod = flag.Duration("storage.memory.retentionPeriod", time.Hour, "The period of time to retain in memory during evictions.")
|
|
|
|
storagePurgeInterval = flag.Duration("storage.purgeInterval", time.Hour, "How frequently to purge old data from the storage.")
|
|
storageRetentionPeriod = flag.Duration("storage.retentionPeriod", 15*24*time.Hour, "The period of time to retain in storage.")
|
|
|
|
notificationQueueCapacity = flag.Int("alertmanager.notificationQueueCapacity", 100, "The size of the queue for pending alert manager notifications.")
|
|
|
|
printVersion = flag.Bool("version", false, "print version information")
|
|
)
|
|
|
|
type prometheus struct {
|
|
unwrittenSamples chan *extraction.Result
|
|
|
|
ruleManager manager.RuleManager
|
|
targetManager retrieval.TargetManager
|
|
notifications chan notification.NotificationReqs
|
|
storage storage_ng.Storage
|
|
remoteTSDBQueue *remote.TSDBQueueManager
|
|
|
|
closeOnce sync.Once
|
|
}
|
|
|
|
func (p *prometheus) interruptHandler() {
|
|
notifier := make(chan os.Signal)
|
|
signal.Notify(notifier, os.Interrupt, syscall.SIGTERM)
|
|
|
|
<-notifier
|
|
|
|
glog.Warning("Received SIGINT/SIGTERM; Exiting gracefully...")
|
|
|
|
p.Close()
|
|
|
|
os.Exit(0)
|
|
}
|
|
|
|
func (p *prometheus) Close() {
|
|
p.closeOnce.Do(p.close)
|
|
}
|
|
|
|
func (p *prometheus) close() {
|
|
// The "Done" remarks are a misnomer for some subsystems due to lack of
|
|
// blocking and synchronization.
|
|
glog.Info("Shutdown has been requested; subsytems are closing:")
|
|
p.targetManager.Stop()
|
|
glog.Info("Remote Target Manager: Done")
|
|
p.ruleManager.Stop()
|
|
glog.Info("Rule Executor: Done")
|
|
|
|
close(p.unwrittenSamples)
|
|
|
|
if err := p.storage.Close(); err != nil {
|
|
glog.Error("Error closing local storage: ", err)
|
|
}
|
|
glog.Info("Local Storage: Done")
|
|
|
|
if p.remoteTSDBQueue != nil {
|
|
p.remoteTSDBQueue.Close()
|
|
glog.Info("Remote Storage: Done")
|
|
}
|
|
|
|
close(p.notifications)
|
|
glog.Info("Sundry Queues: Done")
|
|
glog.Info("See you next time!")
|
|
}
|
|
|
|
func main() {
|
|
// TODO(all): Future additions to main should be, where applicable, glumped
|
|
// into the prometheus struct above---at least where the scoping of the entire
|
|
// server is concerned.
|
|
flag.Parse()
|
|
|
|
versionInfoTmpl.Execute(os.Stdout, BuildInfo)
|
|
|
|
if *printVersion {
|
|
os.Exit(0)
|
|
}
|
|
|
|
conf, err := config.LoadFromFile(*configFile)
|
|
if err != nil {
|
|
glog.Fatalf("Error loading configuration from %s: %v", *configFile, err)
|
|
}
|
|
|
|
persistence, err := storage_ng.NewDiskPersistence(*metricsStoragePath, 1024)
|
|
if err != nil {
|
|
glog.Fatal("Error opening disk persistence: ", err)
|
|
}
|
|
defer persistence.Close()
|
|
|
|
o := &storage_ng.MemorySeriesStorageOptions{
|
|
Persistence: persistence,
|
|
MemoryEvictionInterval: *memoryEvictionInterval,
|
|
MemoryRetentionPeriod: *memoryRetentionPeriod,
|
|
PersistencePurgeInterval: *storagePurgeInterval,
|
|
PersistenceRetentionPeriod: *storageRetentionPeriod,
|
|
}
|
|
memStorage, err := storage_ng.NewMemorySeriesStorage(o)
|
|
if err != nil {
|
|
glog.Fatal("Error opening memory series storage: ", err)
|
|
}
|
|
defer memStorage.Close()
|
|
//registry.MustRegister(memStorage)
|
|
|
|
var remoteTSDBQueue *remote.TSDBQueueManager
|
|
if *remoteTSDBUrl == "" {
|
|
glog.Warningf("No TSDB URL provided; not sending any samples to long-term storage")
|
|
} else {
|
|
openTSDB := opentsdb.NewClient(*remoteTSDBUrl, *remoteTSDBTimeout)
|
|
remoteTSDBQueue = remote.NewTSDBQueueManager(openTSDB, 512)
|
|
registry.MustRegister(remoteTSDBQueue)
|
|
go remoteTSDBQueue.Run()
|
|
}
|
|
|
|
unwrittenSamples := make(chan *extraction.Result, *samplesQueueCapacity)
|
|
ingester := &retrieval.MergeLabelsIngester{
|
|
Labels: conf.GlobalLabels(),
|
|
CollisionPrefix: clientmodel.ExporterLabelPrefix,
|
|
|
|
Ingester: retrieval.ChannelIngester(unwrittenSamples),
|
|
}
|
|
|
|
// Queue depth will need to be exposed
|
|
targetManager := retrieval.NewTargetManager(ingester)
|
|
targetManager.AddTargetsFromConfig(conf)
|
|
|
|
notifications := make(chan notification.NotificationReqs, *notificationQueueCapacity)
|
|
|
|
// Queue depth will need to be exposed
|
|
ruleManager := manager.NewRuleManager(&manager.RuleManagerOptions{
|
|
Results: unwrittenSamples,
|
|
Notifications: notifications,
|
|
EvaluationInterval: conf.EvaluationInterval(),
|
|
Storage: memStorage,
|
|
PrometheusUrl: web.MustBuildServerUrl(),
|
|
})
|
|
if err := ruleManager.AddRulesFromConfig(conf); err != nil {
|
|
glog.Fatal("Error loading rule files: ", err)
|
|
}
|
|
go ruleManager.Run()
|
|
|
|
notificationHandler := notification.NewNotificationHandler(*alertmanagerUrl, notifications)
|
|
registry.MustRegister(notificationHandler)
|
|
go notificationHandler.Run()
|
|
|
|
flags := map[string]string{}
|
|
|
|
flag.VisitAll(func(f *flag.Flag) {
|
|
flags[f.Name] = f.Value.String()
|
|
})
|
|
|
|
prometheusStatus := &web.PrometheusStatusHandler{
|
|
BuildInfo: BuildInfo,
|
|
Config: conf.String(),
|
|
RuleManager: ruleManager,
|
|
TargetPools: targetManager.Pools(),
|
|
Flags: flags,
|
|
Birth: time.Now(),
|
|
}
|
|
|
|
alertsHandler := &web.AlertsHandler{
|
|
RuleManager: ruleManager,
|
|
}
|
|
|
|
consolesHandler := &web.ConsolesHandler{
|
|
Storage: memStorage,
|
|
}
|
|
|
|
metricsService := &api.MetricsService{
|
|
Config: &conf,
|
|
TargetManager: targetManager,
|
|
Storage: memStorage,
|
|
}
|
|
|
|
prometheus := &prometheus{
|
|
unwrittenSamples: unwrittenSamples,
|
|
|
|
ruleManager: ruleManager,
|
|
targetManager: targetManager,
|
|
notifications: notifications,
|
|
storage: memStorage,
|
|
remoteTSDBQueue: remoteTSDBQueue,
|
|
}
|
|
defer prometheus.Close()
|
|
|
|
webService := &web.WebService{
|
|
StatusHandler: prometheusStatus,
|
|
MetricsHandler: metricsService,
|
|
ConsolesHandler: consolesHandler,
|
|
AlertsHandler: alertsHandler,
|
|
|
|
QuitDelegate: prometheus.Close,
|
|
}
|
|
|
|
storageStarted := make(chan bool)
|
|
go memStorage.Serve(storageStarted)
|
|
<-storageStarted
|
|
|
|
go prometheus.interruptHandler()
|
|
|
|
go func() {
|
|
err := webService.ServeForever()
|
|
if err != nil {
|
|
glog.Fatal(err)
|
|
}
|
|
}()
|
|
|
|
// TODO(all): Migrate this into prometheus.serve().
|
|
for block := range unwrittenSamples {
|
|
if block.Err == nil && len(block.Samples) > 0 {
|
|
memStorage.AppendSamples(block.Samples)
|
|
if remoteTSDBQueue != nil {
|
|
remoteTSDBQueue.Queue(block.Samples)
|
|
}
|
|
}
|
|
}
|
|
}
|