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pending.go
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pending.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 kubernetes
import (
"context"
"time"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
kubermaticapiv1 "github.com/kubermatic/kubermatic/api/pkg/api/v1"
kubermaticv1 "github.com/kubermatic/kubermatic/api/pkg/crd/kubermatic/v1"
kuberneteshelper "github.com/kubermatic/kubermatic/api/pkg/kubernetes"
"github.com/kubermatic/kubermatic/api/pkg/resources"
)
const (
reachableCheckPeriod = 5 * time.Second
)
func (r *Reconciler) reconcileCluster(ctx context.Context, cluster *kubermaticv1.Cluster) (*reconcile.Result, error) {
// Create the namespace
if err := r.ensureNamespaceExists(ctx, cluster); err != nil {
return nil, err
}
// Set default network configuration
if err := r.ensureClusterNetworkDefaults(ctx, cluster); err != nil {
return nil, err
}
// Deploy & Update master components for Kubernetes
if err := r.ensureResourcesAreDeployed(ctx, cluster); err != nil {
return nil, err
}
if cluster.Status.ExtendedHealth.Apiserver == kubermaticv1.HealthStatusUp {
// Controlling of user-cluster resources
reachable, err := r.clusterIsReachable(ctx, cluster)
if err != nil {
return nil, err
}
if !reachable {
return &reconcile.Result{RequeueAfter: reachableCheckPeriod}, nil
}
// Only add the node deletion finalizer when the cluster is actually running
// Otherwise we fail to delete the nodes and are stuck in a loop
if !kuberneteshelper.HasFinalizer(cluster, kubermaticapiv1.NodeDeletionFinalizer) {
err = r.updateCluster(ctx, cluster, func(c *kubermaticv1.Cluster) {
kuberneteshelper.AddFinalizer(c, kubermaticapiv1.NodeDeletionFinalizer)
})
if err != nil {
return nil, err
}
}
}
return &reconcile.Result{}, nil
}
// ensureClusterNetworkDefaults will apply default cluster network configuration
func (r *Reconciler) ensureClusterNetworkDefaults(ctx context.Context, cluster *kubermaticv1.Cluster) error {
var modifiers []func(*kubermaticv1.Cluster)
if len(cluster.Spec.ClusterNetwork.Services.CIDRBlocks) == 0 {
setServiceNetwork := func(c *kubermaticv1.Cluster) {
c.Spec.ClusterNetwork.Services.CIDRBlocks = []string{"10.240.16.0/20"}
}
modifiers = append(modifiers, setServiceNetwork)
}
if len(cluster.Spec.ClusterNetwork.Pods.CIDRBlocks) == 0 {
setPodNetwork := func(c *kubermaticv1.Cluster) {
c.Spec.ClusterNetwork.Pods.CIDRBlocks = []string{"172.25.0.0/16"}
}
modifiers = append(modifiers, setPodNetwork)
}
if cluster.Spec.ClusterNetwork.DNSDomain == "" {
setDNSDomain := func(c *kubermaticv1.Cluster) {
c.Spec.ClusterNetwork.DNSDomain = "cluster.local"
}
modifiers = append(modifiers, setDNSDomain)
}
if cluster.Spec.ClusterNetwork.ProxyMode == "" {
setProxyMode := func(c *kubermaticv1.Cluster) {
c.Spec.ClusterNetwork.ProxyMode = resources.IPVSProxyMode
}
modifiers = append(modifiers, setProxyMode)
}
return r.updateCluster(ctx, cluster, func(c *kubermaticv1.Cluster) {
for _, modify := range modifiers {
modify(c)
}
})
}