/
controlplane_configmap.go
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/
controlplane_configmap.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 (
"bytes"
"context"
"fmt"
"text/template"
"github.com/Masterminds/sprig"
kubermaticv1 "github.com/kubermatic/kubermatic/api/pkg/crd/kubermatic/v1"
"github.com/kubermatic/kubermatic/api/pkg/resources/etcd"
"github.com/kubermatic/kubermatic/api/pkg/resources/reconciling"
corev1 "k8s.io/api/core/v1"
)
const (
openshiftAPIServerConfigMapName = "openshift-config-apiserver"
openshiftKubeAPIServerConfigMapName = "openshift-config-kube-apiserver"
openshiftContolPlaneConfigKeyName = "master-config.yaml"
)
var (
openshiftKubeAPIServerTemplate = template.Must(template.New("base").Funcs(sprig.TxtFuncMap()).Parse(openshiftKubeAPIServerConfigTemplate))
openshiftAPIServerTemplate = template.Must(template.New("base").Funcs(sprig.TxtFuncMap()).Parse(openshiftAPIServerConfigTemplate))
)
type masterConfigData interface {
Cluster() *kubermaticv1.Cluster
GetApiserverExternalNodePort(context.Context) (int32, error)
GetKubernetesCloudProviderName() string
}
type openshiftAPIServerCreatorData interface {
Cluster() *kubermaticv1.Cluster
}
func OpenshiftAPIServerConfigMapCreator(data openshiftAPIServerCreatorData) reconciling.NamedConfigMapCreatorGetter {
return func() (string, reconciling.ConfigMapCreator) {
return openshiftAPIServerConfigMapName, func(cm *corev1.ConfigMap) (*corev1.ConfigMap, error) {
if cm.Data == nil {
cm.Data = map[string]string{}
}
apiServerConfigBuffer := bytes.Buffer{}
templateInput := struct {
ETCDEndpoints []string
}{
ETCDEndpoints: etcd.GetClientEndpoints(data.Cluster().Status.NamespaceName),
}
if err := openshiftAPIServerTemplate.Execute(&apiServerConfigBuffer, templateInput); err != nil {
return nil, fmt.Errorf("failed to execute template: %v", err)
}
cm.Data[openshiftContolPlaneConfigKeyName] = apiServerConfigBuffer.String()
return cm, nil
}
}
}
func OpenshiftKubeAPIServerConfigMapCreator(data masterConfigData) reconciling.NamedConfigMapCreatorGetter {
return func() (string, reconciling.ConfigMapCreator) {
return openshiftKubeAPIServerConfigMapName, func(cm *corev1.ConfigMap) (*corev1.ConfigMap, error) {
if cm.Data == nil {
cm.Data = map[string]string{}
}
var podCIDR, serviceCIDR string
if len(data.Cluster().Spec.ClusterNetwork.Pods.CIDRBlocks) > 0 {
podCIDR = data.Cluster().Spec.ClusterNetwork.Pods.CIDRBlocks[0]
}
if len(data.Cluster().Spec.ClusterNetwork.Services.CIDRBlocks) > 0 {
serviceCIDR = data.Cluster().Spec.ClusterNetwork.Services.CIDRBlocks[0]
}
apiServerConfigBuffer := bytes.Buffer{}
templateInput := struct {
PodCIDR string
ServiceCIDR string
ListenPort string
ETCDEndpoints []string
AdvertiseAddress string
CloudProvider string
}{
PodCIDR: podCIDR,
ServiceCIDR: serviceCIDR,
ListenPort: fmt.Sprint(data.Cluster().Address.Port),
ETCDEndpoints: etcd.GetClientEndpoints(data.Cluster().Status.NamespaceName),
AdvertiseAddress: data.Cluster().Address.IP,
CloudProvider: data.GetKubernetesCloudProviderName(),
}
if err := openshiftKubeAPIServerTemplate.Execute(&apiServerConfigBuffer, templateInput); err != nil {
return nil, fmt.Errorf("failed to execute template: %v", err)
}
cm.Data[openshiftContolPlaneConfigKeyName] = apiServerConfigBuffer.String()
return cm, nil
}
}
}
// TODO Use OpenShiftAPIServerConfig type from github.com/openshift/api/openshiftcontrolplane/v1/types.go
const openshiftAPIServerConfigTemplate = `aggregatorConfig:
allowedNames:
- apiserver-aggregator
- kube-apiserver-proxy
- system:kube-apiserver-proxy
- system:openshift-aggregator
clientCA: /var/run/configmaps/aggregator-client-ca/ca.crt
extraHeaderPrefixes:
- X-Remote-Extra-
groupHeaders:
- X-Remote-Group
usernameHeaders:
- X-Remote-User
apiServerArguments:
minimal-shutdown-duration:
- 3s
apiVersion: openshiftcontrolplane.config.openshift.io/v1
auditConfig:
# TODO: Doesn't make much sense in a production setup, but useful for debugging
auditFilePath: /var/log/openshift-apiserver/audit.log
enabled: true
logFormat: json
maximumFileSizeMegabytes: 100
maximumRetainedFiles: 10
policyConfiguration:
apiVersion: audit.k8s.io/v1beta1
kind: Policy
omitStages:
- RequestReceived
rules:
- level: None
resources:
- group: ''
resources:
- events
- level: None
resources:
- group: oauth.openshift.io
resources:
- oauthaccesstokens
- oauthauthorizetokens
- level: None
nonResourceURLs:
- /api*
- /version
- /healthz
userGroups:
- system:authenticated
- system:unauthenticated
- level: Metadata
omitStages:
- RequestReceived
imagePolicyConfig:
internalRegistryHostname: image-registry.openshift-image-registry.svc:5000
kind: OpenShiftAPIServerConfig
projectConfig:
projectRequestMessage: ""
routingConfig:
# TODO: Fix
subdomain: apps.openshift-test.aws.k8c.io
storageConfig:
ca: /etc/etcd/pki/client/ca.crt
certFile: /etc/etcd/pki/client/apiserver-etcd-client.crt
keyFile: /etc/etcd/pki/client/apiserver-etcd-client.key
urls:{{ range .ETCDEndpoints }}
- "{{ . }}"
{{- end }}
servingInfo:
{{- /* TODO: Use consts from resources package */}}
certFile: /var/run/secrets/serving-cert/apiserver-tls.crt
keyFile: /var/run/secrets/serving-cert/apiserver-tls.key
kubeClientConfig:
kubeConfig: /etc/origin/master/kubeconfig/kubeconfig
`
const openshiftKubeAPIServerConfigTemplate = `admission:
pluginConfig:
network.openshift.io/RestrictedEndpointsAdmission:
configuration:
apiVersion: network.openshift.io/v1
kind: RestrictedEndpointsAdmissionConfig
restrictedCIDRs:
- {{ .PodCIDR }}
- {{ .ServiceCIDR }}
aggregatorConfig:
proxyClientInfo:
certFile: /etc/kubernetes/pki/front-proxy/client/apiserver-proxy-client.crt
keyFile: /etc/kubernetes/pki/front-proxy/client/apiserver-proxy-client.key
apiServerArguments:
{{- if .CloudProvider }}
cloud-provider:
- {{ .CloudProvider}}
cloud-config:
- /etc/kubernetes/cloud/config
{{- end }}
enable-aggregator-routing:
# Thist _must_ stay false, if its true, the kube-apiserver will try to resolve endpoints for
# the services that service the extension apis and error out because they are of type
# ExternalName
- 'false'
feature-gates:
- ExperimentalCriticalPodAnnotation=true
- RotateKubeletServerCertificate=true
- SupportPodPidsLimit=true
- LocalStorageCapacityIsolation=false
http2-max-streams-per-connection:
- '2000'
minimal-shutdown-duration:
- 70s
storage-backend:
- etcd3
storage-media-type:
- application/vnd.kubernetes.protobuf
advertise-address:
- {{ .AdvertiseAddress }}
kubelet-preferred-address-types:
- InternalIP
apiVersion: kubecontrolplane.config.openshift.io/v1
auditConfig:
# TODO: Doesn't make much sense in a production setup, but useful for debugging
auditFilePath: /var/log/kube-apiserver/audit.log
enabled: true
logFormat: json
maximumFileSizeMegabytes: 100
maximumRetainedFiles: 10
policyConfiguration:
apiVersion: audit.k8s.io/v1beta1
kind: Policy
omitStages:
- RequestReceived
rules:
- level: None
resources:
- group: ''
resources:
- events
- level: None
resources:
- group: oauth.openshift.io
resources:
- oauthaccesstokens
- oauthauthorizetokens
- level: None
nonResourceURLs:
- /api*
- /version
- /healthz
- /readyz
userGroups:
- system:authenticated
- system:unauthenticated
- level: Metadata
omitStages:
- RequestReceived
authConfig:
oauthMetadataFile: /etc/kubernetes/oauth-metadata/oauthMetadata
requestHeader:
clientCA: /etc/kubernetes/pki/front-proxy/client/ca.crt
clientCommonNames:
- apiserver-aggregator
- kube-apiserver-proxy
- system:kube-apiserver-proxy
- system:openshift-aggregator
extraHeaderPrefixes:
- X-Remote-Extra-
groupHeaders:
- X-Remote-Group
usernameHeaders:
- X-Remote-User
webhookTokenAuthenticators: null
consolePublicURL: ''
corsAllowedOrigins:
- //127\.0\.0\.1(:|$)
- //localhost(:|$)
imagePolicyConfig:
internalRegistryHostname: image-registry.openshift-image-registry.svc:5000
kind: KubeAPIServerConfig
kubeletClientInfo:
ca: /etc/kubernetes/pki/ca/ca.crt
certFile: /etc/kubernetes/kubelet/kubelet-client.crt
keyFile: /etc/kubernetes/kubelet/kubelet-client.key
port: 10250
projectConfig:
defaultNodeSelector: ''
serviceAccountPublicKeyFiles:
- /etc/kubernetes/service-account-key/sa.pub
servicesNodePortRange: 30000-32767
servicesSubnet: {{ .ServiceCIDR }}
servingInfo:
bindAddress: 0.0.0.0:{{ .ListenPort }}
bindNetwork: tcp4
clientCA: /etc/kubernetes/pki/ca/ca.crt
certFile: /etc/kubernetes/tls/apiserver-tls.crt
keyFile: /etc/kubernetes/tls/apiserver-tls.key
maxRequestsInFlight: 1200
namedCertificates: []
# TODO: What are they needed for? Additional serving certs?
# - certFile: /etc/kubernetes/static-pod-certs/secrets/localhost-serving-cert-certkey/tls.crt
# keyFile: /etc/kubernetes/static-pod-certs/secrets/localhost-serving-cert-certkey/tls.key
# - certFile: /etc/kubernetes/static-pod-certs/secrets/service-network-serving-certkey/tls.crt
# keyFile: /etc/kubernetes/static-pod-certs/secrets/service-network-serving-certkey/tls.key
# - certFile: /etc/kubernetes/static-pod-certs/secrets/external-loadbalancer-serving-certkey/tls.crt
# keyFile: /etc/kubernetes/static-pod-certs/secrets/external-loadbalancer-serving-certkey/tls.key
# - certFile: /etc/kubernetes/static-pod-certs/secrets/internal-loadbalancer-serving-certkey/tls.crt
# keyFile: /etc/kubernetes/static-pod-certs/secrets/internal-loadbalancer-serving-certkey/tls.key
requestTimeoutSeconds: 3600
storageConfig:
ca: /etc/etcd/pki/client/ca.crt
certFile: /etc/etcd/pki/client/apiserver-etcd-client.crt
keyFile: /etc/etcd/pki/client/apiserver-etcd-client.key
urls:{{ range .ETCDEndpoints }}
- "{{ . }}"
{{- end }}
userAgentMatchingConfig:
defaultRejectionMessage: ''
deniedClients: null
requiredClients: null
kubeClientConfig:
kubeConfig: /etc/origin/master/loopback-kubeconfig/kubeconfig`