🌱 Add conditions to the KubeadmConfig object

bootstrap/kubeadm/api/v1alpha2/conversion.go

@@ -43,6 +43,7 @@ func (src *KubeadmConfig) ConvertTo(dstRaw conversion.Hub) error {
 	dst.Spec.DiskSetup = restored.Spec.DiskSetup
 	dst.Spec.Mounts = restored.Spec.Mounts
 	dst.Spec.Files = restored.Spec.Files
+	dst.Status.Conditions = restored.Status.Conditions
 
 	// Track files successfully up-converted. We need this to dedupe
 	// restored files from user-updated files on up-conversion. We store

bootstrap/kubeadm/api/v1alpha3/condition_consts.go

@@ -0,0 +1,68 @@
+/*
+Copyright 2020 The Kubernetes Authors.
+
+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 v1alpha3
+
+import clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha3"
+
+// Conditions and condition Reasons for the KubeadmConfig object
+
+const (
+	// DataSecretAvailableCondition documents the status of the bootstrap secret generation process.
+	//
+	// NOTE: When the DataSecret generation starts the process completes immediately and within the
+	// same reconciliation, so the user will always see a transition from Wait to Generated without having
+	// evidence that BootstrapSecret generation is started/in progress.
+	DataSecretAvailableCondition clusterv1.ConditionType = "DataSecretAvailable"
+
+	// WaitingForClusterInfrastructureReason (Severity=Info) document a bootstrap secret generation process
+	// waiting for the cluster infrastructure to be ready.
+	//
+	// NOTE: Having the cluster infrastructure ready is a pre-condition for starting to create machines;
+	// the KubeadmConfig controller ensure this pre-condition is satisfied.
+	WaitingForClusterInfrastructureReason = "WaitingForClusterInfrastructure"
+
+	// WaitingForControlPlaneAvailableReason (Severity=Info) document a bootstrap secret generation process
+	// waiting for the control plane machine to be available.
+	//
+	// NOTE: Having the control plane machine available is a pre-condition for joining additional control planes
+	// or workers nodes.
+	WaitingForControlPlaneAvailableReason = "WaitingForControlPlaneAvailable"
+
+	// DataSecretGenerationFailedReason (Severity=Warning) documents a KubeadmConfig controller detecting
+	// an error while generating a data secret; those kind of errors are usually due to misconfigurations
+	// and user intervention is required to get them fixed.
+	DataSecretGenerationFailedReason = "DataSecretGenerationFailed"
+)
+
+const (
+	// CertificatesAvailableCondition documents that cluster certificates are available.
+	//
+	// NOTE: Cluster certificates are generated only for the KubeadmConfig object linked to the initial control plane
+	// machine, if the cluster is not using a control plane ref object, if the certificates are not provided
+	// by the users.
+	// IMPORTANT: This condition won't be re-created after clusterctl move.
+	CertificatesAvailableCondition clusterv1.ConditionType = "CertificatesAvailable"
+
+	// CertificatesGenerationFailedReason (Severity=Warning) documents a KubeadmConfig controller detecting
+	// an error while generating certificates; those kind of errors are usually temporary and the controller
+	// automatically recover from them.
+	CertificatesGenerationFailedReason = "CertificatesGenerationFailed"
+
+	// CertificatesCorruptedReason (Severity=Error) documents a KubeadmConfig controller detecting
+	// an error while while retrieving certificates for a joining node.
+	CertificatesCorruptedReason = "CertificatesCorrupted"
+)

bootstrap/kubeadm/api/v1alpha3/kubeadmbootstrapconfig_types.go

@@ -18,6 +18,7 @@ package v1alpha3
 
 import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha3"
 	kubeadmv1beta1 "sigs.k8s.io/cluster-api/bootstrap/kubeadm/types/v1beta1"
 )
 
@@ -124,6 +125,10 @@ type KubeadmConfigStatus struct {
 	// ObservedGeneration is the latest generation observed by the controller.
 	// +optional
 	ObservedGeneration int64 `json:"observedGeneration,omitempty"`
+
+	// Conditions defines current service state of the KubeadmConfig.
+	// +optional
+	Conditions clusterv1.Conditions `json:"conditions,omitempty"`
 }
 
 // +kubebuilder:object:root=true
@@ -140,6 +145,14 @@ type KubeadmConfig struct {
 	Status KubeadmConfigStatus `json:"status,omitempty"`
 }
 
+func (c *KubeadmConfig) GetConditions() clusterv1.Conditions {
+	return c.Status.Conditions
+}
+
+func (c *KubeadmConfig) SetConditions(conditions clusterv1.Conditions) {
+	c.Status.Conditions = conditions
+}
+
 // +kubebuilder:object:root=true
 
 // KubeadmConfigList contains a list of KubeadmConfig

bootstrap/kubeadm/config/crd/bases/bootstrap.cluster.x-k8s.io_kubeadmconfigs.yaml

@@ -1738,6 +1738,50 @@ spec:
                   be removed in a future version. Switch to DataSecretName."
                 format: byte
                 type: string
+              conditions:
+                description: Conditions defines current service state of the KubeadmConfig.
+                items:
+                  description: Condition defines an observation of a Cluster API resource
+                    operational state.
+                  properties:
+                    lastTransitionTime:
+                      description: Last time the condition transitioned from one status
+                        to another. This should be when the underlying condition changed.
+                        If that is not known, then using the time when the API field
+                        changed is acceptable.
+                      format: date-time
+                      type: string
+                    message:
+                      description: A human readable message indicating details about
+                        the transition. This field may be empty.
+                      type: string
+                    reason:
+                      description: The reason for the condition's last transition
+                        in CamelCase. The specific API may choose whether or not this
+                        field is considered a guaranteed API. This field may not be
+                        empty.
+                      type: string
+                    severity:
+                      description: Severity provides an explicit classification of
+                        Reason code, so the users or machines can immediately understand
+                        the current situation and act accordingly. The Severity field
+                        MUST be set only when Status=False.
+                      type: string
+                    status:
+                      description: Status of the condition, one of True, False, Unknown.
+                      type: string
+                    type:
+                      description: Type of condition in CamelCase or in foo.example.com/CamelCase.
+                        Many .condition.type values are consistent across resources
+                        like Available, but because arbitrary conditions can be useful
+                        (see .node.status.conditions), the ability to deconflict is
+                        important.
+                      type: string
+                  required:
+                  - status
+                  - type
+                  type: object
+                type: array
               dataSecretName:
                 description: DataSecretName is the name of the secret that stores
                   the bootstrap data script.