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121 lines
4.6 KiB
Go
121 lines
4.6 KiB
Go
/*
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Copyright 2016 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 app implements a server that runs a set of active
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// components. This includes replication controllers, service endpoints and
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// nodes.
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//
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package app
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import (
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"fmt"
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"os"
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"github.com/golang/glog"
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"k8s.io/apimachinery/pkg/runtime/schema"
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cmoptions "k8s.io/kubernetes/cmd/controller-manager/app/options"
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"k8s.io/kubernetes/pkg/controller/certificates/approver"
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"k8s.io/kubernetes/pkg/controller/certificates/cleaner"
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"k8s.io/kubernetes/pkg/controller/certificates/signer"
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)
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func startCSRSigningController(ctx ControllerContext) (bool, error) {
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if !ctx.AvailableResources[schema.GroupVersionResource{Group: "certificates.k8s.io", Version: "v1beta1", Resource: "certificatesigningrequests"}] {
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return false, nil
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}
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if ctx.ComponentConfig.CSRSigningController.ClusterSigningCertFile == "" || ctx.ComponentConfig.CSRSigningController.ClusterSigningKeyFile == "" {
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return false, nil
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}
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// Deprecation warning for old defaults.
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//
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// * If the signing cert and key are the default paths but the files
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// exist, warn that the paths need to be specified explicitly in a
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// later release and the defaults will be removed. We don't expect this
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// to be the case.
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//
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// * If the signing cert and key are default paths but the files don't exist,
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// bail out of startController without logging.
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var keyFileExists, keyUsesDefault, certFileExists, certUsesDefault bool
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_, err := os.Stat(ctx.ComponentConfig.CSRSigningController.ClusterSigningCertFile)
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certFileExists = !os.IsNotExist(err)
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certUsesDefault = (ctx.ComponentConfig.CSRSigningController.ClusterSigningCertFile == cmoptions.DefaultClusterSigningCertFile)
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_, err = os.Stat(ctx.ComponentConfig.CSRSigningController.ClusterSigningKeyFile)
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keyFileExists = !os.IsNotExist(err)
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keyUsesDefault = (ctx.ComponentConfig.CSRSigningController.ClusterSigningKeyFile == cmoptions.DefaultClusterSigningKeyFile)
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switch {
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case (keyFileExists && keyUsesDefault) || (certFileExists && certUsesDefault):
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glog.Warningf("You might be using flag defaulting for --cluster-signing-cert-file and" +
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" --cluster-signing-key-file. These defaults are deprecated and will be removed" +
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" in a subsequent release. Please pass these options explicitly.")
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case (!keyFileExists && keyUsesDefault) && (!certFileExists && certUsesDefault):
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// This is what we expect right now if people aren't
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// setting up the signing controller. This isn't
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// actually a problem since the signer is not a
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// required controller.
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return false, nil
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default:
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// Note that '!filesExist && !usesDefaults' is obviously
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// operator error. We don't handle this case here and instead
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// allow it to be handled by NewCSR... below.
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}
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c := ctx.ClientBuilder.ClientOrDie("certificate-controller")
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signer, err := signer.NewCSRSigningController(
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c,
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ctx.InformerFactory.Certificates().V1beta1().CertificateSigningRequests(),
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ctx.ComponentConfig.CSRSigningController.ClusterSigningCertFile,
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ctx.ComponentConfig.CSRSigningController.ClusterSigningKeyFile,
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ctx.ComponentConfig.CSRSigningController.ClusterSigningDuration.Duration,
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)
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if err != nil {
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return false, fmt.Errorf("failed to start certificate controller: %v", err)
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}
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go signer.Run(1, ctx.Stop)
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return true, nil
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}
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func startCSRApprovingController(ctx ControllerContext) (bool, error) {
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if !ctx.AvailableResources[schema.GroupVersionResource{Group: "certificates.k8s.io", Version: "v1beta1", Resource: "certificatesigningrequests"}] {
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return false, nil
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}
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approver := approver.NewCSRApprovingController(
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ctx.ClientBuilder.ClientOrDie("certificate-controller"),
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ctx.InformerFactory.Certificates().V1beta1().CertificateSigningRequests(),
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)
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go approver.Run(1, ctx.Stop)
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return true, nil
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}
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func startCSRCleanerController(ctx ControllerContext) (bool, error) {
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cleaner := cleaner.NewCSRCleanerController(
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ctx.ClientBuilder.ClientOrDie("certificate-controller").CertificatesV1beta1().CertificateSigningRequests(),
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ctx.InformerFactory.Certificates().V1beta1().CertificateSigningRequests(),
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)
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go cleaner.Run(1, ctx.Stop)
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return true, nil
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}
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