mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-05 17:16:59 +02:00
362 lines
12 KiB
Go
362 lines
12 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
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 (
|
|
"context"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/prometheus/client_golang/prometheus/promhttp"
|
|
log "github.com/sirupsen/logrus"
|
|
|
|
_ "k8s.io/client-go/plugin/pkg/client/auth"
|
|
"sigs.k8s.io/external-dns/provider/akamai"
|
|
"sigs.k8s.io/external-dns/provider/alibabacloud"
|
|
"sigs.k8s.io/external-dns/provider/aws"
|
|
"sigs.k8s.io/external-dns/provider/awssd"
|
|
"sigs.k8s.io/external-dns/provider/azure"
|
|
"sigs.k8s.io/external-dns/provider/cloudflare"
|
|
"sigs.k8s.io/external-dns/provider/coredns"
|
|
"sigs.k8s.io/external-dns/provider/designate"
|
|
"sigs.k8s.io/external-dns/provider/digitalocean"
|
|
"sigs.k8s.io/external-dns/provider/dnsimple"
|
|
"sigs.k8s.io/external-dns/provider/dyn"
|
|
"sigs.k8s.io/external-dns/provider/exoscale"
|
|
"sigs.k8s.io/external-dns/provider/google"
|
|
"sigs.k8s.io/external-dns/provider/infoblox"
|
|
"sigs.k8s.io/external-dns/provider/inmemory"
|
|
"sigs.k8s.io/external-dns/provider/linode"
|
|
"sigs.k8s.io/external-dns/provider/ns1"
|
|
"sigs.k8s.io/external-dns/provider/oci"
|
|
"sigs.k8s.io/external-dns/provider/ovh"
|
|
"sigs.k8s.io/external-dns/provider/pdns"
|
|
"sigs.k8s.io/external-dns/provider/rcode0"
|
|
"sigs.k8s.io/external-dns/provider/rdns"
|
|
"sigs.k8s.io/external-dns/provider/rfc2136"
|
|
"sigs.k8s.io/external-dns/provider/transip"
|
|
"sigs.k8s.io/external-dns/provider/vinyldns"
|
|
"sigs.k8s.io/external-dns/provider/vultr"
|
|
|
|
"sigs.k8s.io/external-dns/controller"
|
|
"sigs.k8s.io/external-dns/endpoint"
|
|
"sigs.k8s.io/external-dns/pkg/apis/externaldns"
|
|
"sigs.k8s.io/external-dns/pkg/apis/externaldns/validation"
|
|
"sigs.k8s.io/external-dns/plan"
|
|
"sigs.k8s.io/external-dns/provider"
|
|
"sigs.k8s.io/external-dns/registry"
|
|
"sigs.k8s.io/external-dns/source"
|
|
)
|
|
|
|
func main() {
|
|
cfg := externaldns.NewConfig()
|
|
if err := cfg.ParseFlags(os.Args[1:]); err != nil {
|
|
log.Fatalf("flag parsing error: %v", err)
|
|
}
|
|
log.Infof("config: %s", cfg)
|
|
|
|
if err := validation.ValidateConfig(cfg); err != nil {
|
|
log.Fatalf("config validation failed: %v", err)
|
|
}
|
|
|
|
if cfg.LogFormat == "json" {
|
|
log.SetFormatter(&log.JSONFormatter{})
|
|
}
|
|
if cfg.DryRun {
|
|
log.Info("running in dry-run mode. No changes to DNS records will be made.")
|
|
}
|
|
|
|
ll, err := log.ParseLevel(cfg.LogLevel)
|
|
if err != nil {
|
|
log.Fatalf("failed to parse log level: %v", err)
|
|
}
|
|
log.SetLevel(ll)
|
|
|
|
ctx := context.Background()
|
|
|
|
stopChan := make(chan struct{}, 1)
|
|
|
|
go serveMetrics(cfg.MetricsAddress)
|
|
go handleSigterm(stopChan)
|
|
|
|
// Create a source.Config from the flags passed by the user.
|
|
sourceCfg := &source.Config{
|
|
Namespace: cfg.Namespace,
|
|
AnnotationFilter: cfg.AnnotationFilter,
|
|
FQDNTemplate: cfg.FQDNTemplate,
|
|
CombineFQDNAndAnnotation: cfg.CombineFQDNAndAnnotation,
|
|
IgnoreHostnameAnnotation: cfg.IgnoreHostnameAnnotation,
|
|
Compatibility: cfg.Compatibility,
|
|
PublishInternal: cfg.PublishInternal,
|
|
PublishHostIP: cfg.PublishHostIP,
|
|
AlwaysPublishNotReadyAddresses: cfg.AlwaysPublishNotReadyAddresses,
|
|
ConnectorServer: cfg.ConnectorSourceServer,
|
|
CRDSourceAPIVersion: cfg.CRDSourceAPIVersion,
|
|
CRDSourceKind: cfg.CRDSourceKind,
|
|
KubeConfig: cfg.KubeConfig,
|
|
KubeMaster: cfg.Master,
|
|
ServiceTypeFilter: cfg.ServiceTypeFilter,
|
|
IstioIngressGatewayServices: cfg.IstioIngressGatewayServices,
|
|
CFAPIEndpoint: cfg.CFAPIEndpoint,
|
|
CFUsername: cfg.CFUsername,
|
|
CFPassword: cfg.CFPassword,
|
|
ContourLoadBalancerService: cfg.ContourLoadBalancerService,
|
|
SkipperRouteGroupVersion: cfg.SkipperRouteGroupVersion,
|
|
RequestTimeout: cfg.RequestTimeout,
|
|
}
|
|
|
|
// Lookup all the selected sources by names and pass them the desired configuration.
|
|
sources, err := source.ByNames(&source.SingletonClientGenerator{
|
|
KubeConfig: cfg.KubeConfig,
|
|
KubeMaster: cfg.Master,
|
|
// If update events are enabled, disable timeout.
|
|
RequestTimeout: func() time.Duration {
|
|
if cfg.UpdateEvents {
|
|
return 0
|
|
}
|
|
return cfg.RequestTimeout
|
|
}(),
|
|
}, cfg.Sources, sourceCfg)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
// Combine multiple sources into a single, deduplicated source.
|
|
endpointsSource := source.NewDedupSource(source.NewMultiSource(sources))
|
|
|
|
domainFilter := endpoint.NewDomainFilterWithExclusions(cfg.DomainFilter, cfg.ExcludeDomains)
|
|
zoneIDFilter := provider.NewZoneIDFilter(cfg.ZoneIDFilter)
|
|
zoneTypeFilter := provider.NewZoneTypeFilter(cfg.AWSZoneType)
|
|
zoneTagFilter := provider.NewZoneTagFilter(cfg.AWSZoneTagFilter)
|
|
|
|
var p provider.Provider
|
|
switch cfg.Provider {
|
|
case "akamai":
|
|
p = akamai.NewAkamaiProvider(
|
|
akamai.AkamaiConfig{
|
|
DomainFilter: domainFilter,
|
|
ZoneIDFilter: zoneIDFilter,
|
|
ServiceConsumerDomain: cfg.AkamaiServiceConsumerDomain,
|
|
ClientToken: cfg.AkamaiClientToken,
|
|
ClientSecret: cfg.AkamaiClientSecret,
|
|
AccessToken: cfg.AkamaiAccessToken,
|
|
DryRun: cfg.DryRun,
|
|
},
|
|
)
|
|
case "alibabacloud":
|
|
p, err = alibabacloud.NewAlibabaCloudProvider(cfg.AlibabaCloudConfigFile, domainFilter, zoneIDFilter, cfg.AlibabaCloudZoneType, cfg.DryRun)
|
|
case "aws":
|
|
p, err = aws.NewAWSProvider(
|
|
aws.AWSConfig{
|
|
DomainFilter: domainFilter,
|
|
ZoneIDFilter: zoneIDFilter,
|
|
ZoneTypeFilter: zoneTypeFilter,
|
|
ZoneTagFilter: zoneTagFilter,
|
|
BatchChangeSize: cfg.AWSBatchChangeSize,
|
|
BatchChangeInterval: cfg.AWSBatchChangeInterval,
|
|
EvaluateTargetHealth: cfg.AWSEvaluateTargetHealth,
|
|
AssumeRole: cfg.AWSAssumeRole,
|
|
APIRetries: cfg.AWSAPIRetries,
|
|
PreferCNAME: cfg.AWSPreferCNAME,
|
|
DryRun: cfg.DryRun,
|
|
},
|
|
)
|
|
case "aws-sd":
|
|
// Check that only compatible Registry is used with AWS-SD
|
|
if cfg.Registry != "noop" && cfg.Registry != "aws-sd" {
|
|
log.Infof("Registry \"%s\" cannot be used with AWS Cloud Map. Switching to \"aws-sd\".", cfg.Registry)
|
|
cfg.Registry = "aws-sd"
|
|
}
|
|
p, err = awssd.NewAWSSDProvider(domainFilter, cfg.AWSZoneType, cfg.AWSAssumeRole, cfg.DryRun)
|
|
case "azure-dns", "azure":
|
|
p, err = azure.NewAzureProvider(cfg.AzureConfigFile, domainFilter, zoneIDFilter, cfg.AzureResourceGroup, cfg.AzureUserAssignedIdentityClientID, cfg.DryRun)
|
|
case "azure-private-dns":
|
|
p, err = azure.NewAzurePrivateDNSProvider(domainFilter, zoneIDFilter, cfg.AzureResourceGroup, cfg.AzureSubscriptionID, cfg.DryRun)
|
|
case "vinyldns":
|
|
p, err = vinyldns.NewVinylDNSProvider(domainFilter, zoneIDFilter, cfg.DryRun)
|
|
case "vultr":
|
|
p, err = vultr.NewVultrProvider(domainFilter, cfg.DryRun)
|
|
case "cloudflare":
|
|
p, err = cloudflare.NewCloudFlareProvider(domainFilter, zoneIDFilter, cfg.CloudflareZonesPerPage, cfg.CloudflareProxied, cfg.DryRun)
|
|
case "rcodezero":
|
|
p, err = rcode0.NewRcodeZeroProvider(domainFilter, cfg.DryRun, cfg.RcodezeroTXTEncrypt)
|
|
case "google":
|
|
p, err = google.NewGoogleProvider(ctx, cfg.GoogleProject, domainFilter, zoneIDFilter, cfg.GoogleBatchChangeSize, cfg.GoogleBatchChangeInterval, cfg.DryRun)
|
|
case "digitalocean":
|
|
p, err = digitalocean.NewDigitalOceanProvider(ctx, domainFilter, cfg.DryRun)
|
|
case "ovh":
|
|
p, err = ovh.NewOVHProvider(ctx, domainFilter, cfg.OVHEndpoint, cfg.DryRun)
|
|
case "linode":
|
|
p, err = linode.NewLinodeProvider(domainFilter, cfg.DryRun, externaldns.Version)
|
|
case "dnsimple":
|
|
p, err = dnsimple.NewDnsimpleProvider(domainFilter, zoneIDFilter, cfg.DryRun)
|
|
case "infoblox":
|
|
p, err = infoblox.NewInfobloxProvider(
|
|
infoblox.InfobloxConfig{
|
|
DomainFilter: domainFilter,
|
|
ZoneIDFilter: zoneIDFilter,
|
|
Host: cfg.InfobloxGridHost,
|
|
Port: cfg.InfobloxWapiPort,
|
|
Username: cfg.InfobloxWapiUsername,
|
|
Password: cfg.InfobloxWapiPassword,
|
|
Version: cfg.InfobloxWapiVersion,
|
|
SSLVerify: cfg.InfobloxSSLVerify,
|
|
View: cfg.InfobloxView,
|
|
MaxResults: cfg.InfobloxMaxResults,
|
|
DryRun: cfg.DryRun,
|
|
},
|
|
)
|
|
case "dyn":
|
|
p, err = dyn.NewDynProvider(
|
|
dyn.DynConfig{
|
|
DomainFilter: domainFilter,
|
|
ZoneIDFilter: zoneIDFilter,
|
|
DryRun: cfg.DryRun,
|
|
CustomerName: cfg.DynCustomerName,
|
|
Username: cfg.DynUsername,
|
|
Password: cfg.DynPassword,
|
|
MinTTLSeconds: cfg.DynMinTTLSeconds,
|
|
AppVersion: externaldns.Version,
|
|
},
|
|
)
|
|
case "coredns", "skydns":
|
|
p, err = coredns.NewCoreDNSProvider(domainFilter, cfg.CoreDNSPrefix, cfg.DryRun)
|
|
case "rdns":
|
|
p, err = rdns.NewRDNSProvider(
|
|
rdns.RDNSConfig{
|
|
DomainFilter: domainFilter,
|
|
DryRun: cfg.DryRun,
|
|
},
|
|
)
|
|
case "exoscale":
|
|
p, err = exoscale.NewExoscaleProvider(cfg.ExoscaleEndpoint, cfg.ExoscaleAPIKey, cfg.ExoscaleAPISecret, cfg.DryRun, exoscale.ExoscaleWithDomain(domainFilter), exoscale.ExoscaleWithLogging()), nil
|
|
case "inmemory":
|
|
p, err = inmemory.NewInMemoryProvider(inmemory.InMemoryInitZones(cfg.InMemoryZones), inmemory.InMemoryWithDomain(domainFilter), inmemory.InMemoryWithLogging()), nil
|
|
case "designate":
|
|
p, err = designate.NewDesignateProvider(domainFilter, cfg.DryRun)
|
|
case "pdns":
|
|
p, err = pdns.NewPDNSProvider(
|
|
ctx,
|
|
pdns.PDNSConfig{
|
|
DomainFilter: domainFilter,
|
|
DryRun: cfg.DryRun,
|
|
Server: cfg.PDNSServer,
|
|
APIKey: cfg.PDNSAPIKey,
|
|
TLSConfig: pdns.TLSConfig{
|
|
TLSEnabled: cfg.PDNSTLSEnabled,
|
|
CAFilePath: cfg.TLSCA,
|
|
ClientCertFilePath: cfg.TLSClientCert,
|
|
ClientCertKeyFilePath: cfg.TLSClientCertKey,
|
|
},
|
|
},
|
|
)
|
|
case "oci":
|
|
var config *oci.OCIConfig
|
|
config, err = oci.LoadOCIConfig(cfg.OCIConfigFile)
|
|
if err == nil {
|
|
p, err = oci.NewOCIProvider(*config, domainFilter, zoneIDFilter, cfg.DryRun)
|
|
}
|
|
case "rfc2136":
|
|
p, err = rfc2136.NewRfc2136Provider(cfg.RFC2136Host, cfg.RFC2136Port, cfg.RFC2136Zone, cfg.RFC2136Insecure, cfg.RFC2136TSIGKeyName, cfg.RFC2136TSIGSecret, cfg.RFC2136TSIGSecretAlg, cfg.RFC2136TAXFR, domainFilter, cfg.DryRun, cfg.RFC2136MinTTL, nil)
|
|
case "ns1":
|
|
p, err = ns1.NewNS1Provider(
|
|
ns1.NS1Config{
|
|
DomainFilter: domainFilter,
|
|
ZoneIDFilter: zoneIDFilter,
|
|
NS1Endpoint: cfg.NS1Endpoint,
|
|
NS1IgnoreSSL: cfg.NS1IgnoreSSL,
|
|
DryRun: cfg.DryRun,
|
|
},
|
|
)
|
|
case "transip":
|
|
p, err = transip.NewTransIPProvider(cfg.TransIPAccountName, cfg.TransIPPrivateKeyFile, domainFilter, cfg.DryRun)
|
|
default:
|
|
log.Fatalf("unknown dns provider: %s", cfg.Provider)
|
|
}
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
var r registry.Registry
|
|
switch cfg.Registry {
|
|
case "noop":
|
|
r, err = registry.NewNoopRegistry(p)
|
|
case "txt":
|
|
r, err = registry.NewTXTRegistry(p, cfg.TXTPrefix, cfg.TXTOwnerID, cfg.TXTCacheInterval)
|
|
case "aws-sd":
|
|
r, err = registry.NewAWSSDRegistry(p.(*awssd.AWSSDProvider), cfg.TXTOwnerID)
|
|
default:
|
|
log.Fatalf("unknown registry: %s", cfg.Registry)
|
|
}
|
|
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
policy, exists := plan.Policies[cfg.Policy]
|
|
if !exists {
|
|
log.Fatalf("unknown policy: %s", cfg.Policy)
|
|
}
|
|
|
|
ctrl := controller.Controller{
|
|
Source: endpointsSource,
|
|
Registry: r,
|
|
Policy: policy,
|
|
Interval: cfg.Interval,
|
|
DomainFilter: domainFilter,
|
|
}
|
|
|
|
if cfg.UpdateEvents {
|
|
// Add RunOnce as the handler function that will be called when ingress/service sources have changed.
|
|
// Note that k8s Informers will perform an initial list operation, which results in the handler
|
|
// function initially being called for every Service/Ingress that exists limted by minInterval.
|
|
ctrl.Source.AddEventHandler(func() error { return ctrl.RunOnce(ctx) }, stopChan, 1*time.Minute)
|
|
}
|
|
|
|
if cfg.Once {
|
|
err := ctrl.RunOnce(ctx)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
os.Exit(0)
|
|
}
|
|
ctrl.Run(ctx, stopChan)
|
|
}
|
|
|
|
func handleSigterm(stopChan chan struct{}) {
|
|
signals := make(chan os.Signal, 1)
|
|
signal.Notify(signals, syscall.SIGTERM)
|
|
<-signals
|
|
log.Info("Received SIGTERM. Terminating...")
|
|
close(stopChan)
|
|
}
|
|
|
|
func serveMetrics(address string) {
|
|
http.HandleFunc("/healthz", func(w http.ResponseWriter, _ *http.Request) {
|
|
w.WriteHeader(http.StatusOK)
|
|
w.Write([]byte("OK"))
|
|
})
|
|
|
|
http.Handle("/metrics", promhttp.Handler())
|
|
|
|
log.Fatal(http.ListenAndServe(address, nil))
|
|
}
|