openshift_network_operator.go

/*
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"
	"strconv"

	"github.com/kubermatic/kubermatic/api/pkg/resources"
	"github.com/kubermatic/kubermatic/api/pkg/resources/apiserver"
	"github.com/kubermatic/kubermatic/api/pkg/resources/reconciling"

	appsv1 "k8s.io/api/apps/v1"
	corev1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/resource"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/util/sets"
	utilpointer "k8s.io/utils/pointer"
)

var (
	openshiftNetworkOperatorResourceRequirements = map[string]*corev1.ResourceRequirements{
		"network-operator": {
			Requests: corev1.ResourceList{
				corev1.ResourceMemory: resource.MustParse("50Mi"),
				corev1.ResourceCPU:    resource.MustParse("10m"),
			},
			Limits: corev1.ResourceList{
				corev1.ResourceMemory: resource.MustParse("200Mi"),
				corev1.ResourceCPU:    resource.MustParse("100m"),
			},
		},
	}
)

const openshiftNetworkOperatorDeploymentName = "openshift-network-operator"

func OpenshiftNetworkOperatorCreatorFactory(data openshiftData) reconciling.NamedDeploymentCreatorGetter {
	return func() (string, reconciling.DeploymentCreator) {
		return openshiftNetworkOperatorDeploymentName, func(d *appsv1.Deployment) (*appsv1.Deployment, error) {
			image, err := clusterNetworkOperatorImage(data.Cluster().Spec.Version.String(), data.ImageRegistry(""))
			if err != nil {
				return nil, err
			}
			env, err := openshiftNetworkOperatorEnv(data)
			if err != nil {
				return nil, err
			}
			// This gets injected into the created pods, so it must match the usercluster
			env = append(env,
				corev1.EnvVar{
					Name:  "KUBERNETES_SERVICE_HOST",
					Value: data.Cluster().Address.IP,
				},
				corev1.EnvVar{
					Name:  "KUBERNETES_SERVICE_PORT",
					Value: strconv.Itoa(int(data.Cluster().Address.Port)),
				})

			d.Spec.Selector = &metav1.LabelSelector{
				MatchLabels: resources.BaseAppLabels(openshiftNetworkOperatorDeploymentName, nil),
			}
			d.Spec.Template.Spec.ImagePullSecrets = []corev1.LocalObjectReference{
				{Name: openshiftImagePullSecretName},
			}
			d.Spec.Template.Spec.AutomountServiceAccountToken = utilpointer.BoolPtr(false)
			// Configure user cluster DNS resolver for this pod.
			d.Spec.Template.Spec.DNSPolicy, d.Spec.Template.Spec.DNSConfig, err = resources.UserClusterDNSPolicyAndConfig(data)
			if err != nil {
				return nil, err
			}

			d.Spec.Template.Spec.Containers = []corev1.Container{{
				Name:  "network-operator",
				Image: image,
				Env: append(env, corev1.EnvVar{
					Name:  "KUBECONFIG",
					Value: "/etc/kubernetes/kubeconfig/kubeconfig",
				}),
				Command: []string{
					"/usr/bin/cluster-network-operator",
					"--kubeconfig=/etc/kubernetes/kubeconfig/kubeconfig",
				},
				VolumeMounts: []corev1.VolumeMount{{
					Name:      resources.InternalUserClusterAdminKubeconfigSecretName,
					MountPath: "/etc/kubernetes/kubeconfig",
				}},
			}}
			err = resources.SetResourceRequirements(d.Spec.Template.Spec.Containers, openshiftNetworkOperatorResourceRequirements, nil, d.Annotations)
			if err != nil {
				return nil, fmt.Errorf("failed to set resource requirements: %v", err)
			}
			d.Spec.Template.Spec.Volumes = []corev1.Volume{
				{
					Name: resources.InternalUserClusterAdminKubeconfigSecretName,
					VolumeSource: corev1.VolumeSource{
						Secret: &corev1.SecretVolumeSource{
							SecretName: resources.InternalUserClusterAdminKubeconfigSecretName,
						},
					},
				},
			}

			d.Spec.Template.Labels, err = data.GetPodTemplateLabels(openshiftNetworkOperatorDeploymentName, d.Spec.Template.Spec.Volumes, nil)
			if err != nil {
				return nil, err
			}

			wrappedPodSpec, err := apiserver.IsRunningWrapper(data, d.Spec.Template.Spec, sets.NewString("network-operator"), "Network,operator.openshift.io/v1")
			if err != nil {
				return nil, fmt.Errorf("failed to add apiserver.IsRunningWrapper: %v", err)
			}
			d.Spec.Template.Spec = *wrappedPodSpec

			return d, nil
		}
	}
}

func openshiftNetworkOperatorEnv(data openshiftData) ([]corev1.EnvVar, error) {
	openshiftVersion := data.Cluster().Spec.Version.String()
	nodeImageValue, err := nodeImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	hypershiftImageValue, err := hypershiftImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	multusCniImageValue, err := multusCniImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	containerNetworkingPluginsSupportedImageValue, err := containerNetworkingPluginsSupportedImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	containerNetworkingPluginsUnsupportedImageValue, err := containerNetworkingPluginsUnsupportedImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	sriovCniImageValue, err := sriovCniImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	sriovNetworkDevicePluginImageValue, err := sriovNetworkDevicePluginImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}
	ovnKubernetesImageValue, err := ovnKubernetesImage(openshiftVersion, data.ImageRegistry(""))
	if err != nil {
		return nil, err
	}

	return []corev1.EnvVar{
		{Name: "RELEASE_VERSION", Value: openshiftVersion},
		{Name: "NODE_IMAGE", Value: nodeImageValue},
		{Name: "HYPERSHIFT_IMAGE", Value: hypershiftImageValue},
		{Name: "MULTUS_IMAGE", Value: multusCniImageValue},
		{Name: "CNI_PLUGINS_SUPPORTED_IMAGE", Value: containerNetworkingPluginsSupportedImageValue},
		{Name: "CNI_PLUGINS_UNSUPPORTED_IMAGE", Value: containerNetworkingPluginsUnsupportedImageValue},
		{Name: "SRIOV_CNI_IMAGE", Value: sriovCniImageValue},
		{Name: "SRIOV_DEVICE_PLUGIN_IMAGE", Value: sriovNetworkDevicePluginImageValue},
		{Name: "OVN_IMAGE", Value: ovnKubernetesImageValue},
	}, nil
}