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machinecontroller.go
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machinecontroller.go
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/*
Copyright 2020 The Kubermatic Kubernetes Platform contributors.
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 resources
import (
"fmt"
"github.com/kubermatic/kubermatic/api/pkg/resources"
"github.com/kubermatic/kubermatic/api/pkg/resources/apiserver"
"github.com/kubermatic/kubermatic/api/pkg/resources/machinecontroller"
"github.com/kubermatic/kubermatic/api/pkg/resources/reconciling"
openshiftuserdata "github.com/kubermatic/kubermatic/api/pkg/userdata/openshift"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/sets"
)
func MachineController(osData openshiftData) reconciling.NamedDeploymentCreatorGetter {
name, creator := machinecontroller.DeploymentCreatorWithoutInitWrapper(osData)()
// We do two things here:
// * Add a kubermatic-api initcontainer that copies the openshift-userdata binary
// into a shared volume and configure the machine-controller via env var to use that for CentOS
// * Append to the machine-controller cmd so it uses a service account token instead of bootstrap
// tokens
return func() (string, reconciling.DeploymentCreator) {
return name, func(in *appsv1.Deployment) (*appsv1.Deployment, error) {
d, err := creator(in)
if err != nil {
return nil, err
}
d.Spec.Template.Spec.Volumes = append(d.Spec.Template.Spec.Volumes, corev1.Volume{Name: "userdata-plugins",
VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}}})
d.Spec.Template.Spec.InitContainers = []corev1.Container{{
Name: "copy-userdata-plugin",
Image: osData.KubermaticAPIImage() + ":" + resources.KUBERMATICCOMMIT,
Command: []string{
"cp",
"/usr/local/bin/userdata-openshift",
"/target/machine-controller-userdata-centos",
},
VolumeMounts: []corev1.VolumeMount{{Name: "userdata-plugins", MountPath: "/target"}},
}}
for idx := range d.Spec.Template.Spec.Containers {
if d.Spec.Template.Spec.Containers[idx].Name != "machine-controller" {
continue
}
d.Spec.Template.Spec.Containers[idx].Command = append(d.Spec.Template.Spec.Containers[idx].Command,
"-bootstrap-token-service-account-name", "openshift-infra/node-bootstrapper")
d.Spec.Template.Spec.Containers[idx].VolumeMounts = append(d.Spec.Template.Spec.Containers[idx].VolumeMounts, corev1.VolumeMount{
Name: "userdata-plugins", MountPath: "/userdata-plugins"})
d.Spec.Template.Spec.Containers[idx].Env = append(d.Spec.Template.Spec.Containers[idx].Env,
corev1.EnvVar{Name: "MACHINE_CONTROLLER_USERDATA_PLUGIN_DIR", Value: "/userdata-plugins"})
d.Spec.Template.Spec.Containers[idx].Env = append(d.Spec.Template.Spec.Containers[idx].Env,
corev1.EnvVar{Name: openshiftuserdata.DockerCFGEnvKey, Value: osData.Cluster().Spec.Openshift.ImagePullSecret})
}
wrappedPodSpec, err := apiserver.IsRunningWrapper(osData, d.Spec.Template.Spec, sets.NewString(name), "Machine,cluster.k8s.io/v1alpha1")
if err != nil {
return nil, fmt.Errorf("failed to add apiserver.IsRunningWrapper: %v", err)
}
d.Spec.Template.Spec = *wrappedPodSpec
return d, nil
}
}
}