show cluster instance name and version in flux check and flux version

Signed-off-by: Somtochi Onyekwere <somtochionyekwere@gmail.com>

cmd/flux/check.go

@@ -18,6 +18,7 @@ package main
 
 import (
 	"context"
+	"fmt"
 	"os"
 	"time"
 
@@ -26,6 +27,7 @@ import (
 	v1 "k8s.io/api/apps/v1"
 	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
 	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/fluxcd/pkg/version"
@@ -80,7 +82,20 @@ func runCheckCmd(cmd *cobra.Command, args []string) error {
 
 	fluxCheck()
 
-	if !kubernetesCheck(kubernetesConstraints) {
+	ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
+	defer cancel()
+
+	cfg, err := utils.KubeConfig(kubeconfigArgs, kubeclientOptions)
+	if err != nil {
+		return fmt.Errorf("Kubernetes client initialization failed: %s", err.Error())
+	}
+
+	kubeClient, err := client.New(cfg, client.Options{Scheme: utils.NewScheme()})
+	if err != nil {
+		return err
+	}
+
+	if !kubernetesCheck(cfg, kubernetesConstraints) {
 		checkFailed = true
 	}
 
@@ -92,13 +107,18 @@ func runCheckCmd(cmd *cobra.Command, args []string) error {
 		return nil
 	}
 
+	logger.Actionf("checking version in cluster")
+	if !fluxClusterVersionCheck(ctx, kubeClient) {
+		checkFailed = true
+	}
+
 	logger.Actionf("checking controllers")
-	if !componentsCheck() {
+	if !componentsCheck(ctx, kubeClient) {
 		checkFailed = true
 	}
 
 	logger.Actionf("checking crds")
-	if !crdsCheck() {
+	if !crdsCheck(ctx, kubeClient) {
 		checkFailed = true
 	}
 
@@ -129,17 +149,11 @@ func fluxCheck() {
 		return
 	}
 	if latestSv.GreaterThan(curSv) {
-		logger.Failuref("flux %s <%s (new version is available, please upgrade)", curSv, latestSv)
+		logger.Failuref("flux %s <%s (new CLI version is available, please upgrade)", curSv, latestSv)
 	}
 }
 
-func kubernetesCheck(constraints []string) bool {
-	cfg, err := utils.KubeConfig(kubeconfigArgs, kubeclientOptions)
-	if err != nil {
-		logger.Failuref("Kubernetes client initialization failed: %s", err.Error())
-		return false
-	}
-
+func kubernetesCheck(cfg *rest.Config, constraints []string) bool {
 	clientSet, err := kubernetes.NewForConfig(cfg)
 	if err != nil {
 		logger.Failuref("Kubernetes client initialization failed: %s", err.Error())
@@ -178,21 +192,8 @@ func kubernetesCheck(constraints []string) bool {
 	return true
 }
 
-func componentsCheck() bool {
-	ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
-	defer cancel()
-
-	kubeConfig, err := utils.KubeConfig(kubeconfigArgs, kubeclientOptions)
-	if err != nil {
-		return false
-	}
-
-	statusChecker, err := status.NewStatusChecker(kubeConfig, checkArgs.pollInterval, rootArgs.timeout, logger)
-	if err != nil {
-		return false
-	}
-
-	kubeClient, err := utils.KubeClient(kubeconfigArgs, kubeclientOptions)
+func componentsCheck(ctx context.Context, kubeClient client.Client) bool {
+	statusChecker, err := status.NewStatusCheckerWithClient(kubeClient, checkArgs.pollInterval, rootArgs.timeout, logger)
 	if err != nil {
 		return false
 	}
@@ -222,15 +223,7 @@ func componentsCheck() bool {
 	return ok
 }
 
-func crdsCheck() bool {
-	ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
-	defer cancel()
-
-	kubeClient, err := utils.KubeClient(kubeconfigArgs, kubeclientOptions)
-	if err != nil {
-		return false
-	}
-
+func crdsCheck(ctx context.Context, kubeClient client.Client) bool {
 	ok := true
 	selector := client.MatchingLabels{manifestgen.PartOfLabelKey: manifestgen.PartOfLabelValue}
 	var list apiextensionsv1.CustomResourceDefinitionList
@@ -253,3 +246,17 @@ func crdsCheck() bool {
 	}
 	return ok
 }
+
+func fluxClusterVersionCheck(ctx context.Context, kubeClient client.Client) bool {
+	clusterInfo, err := getFluxClusterInfo(ctx, kubeClient)
+	if err != nil {
+		logger.Failuref("checking failed: %s", err.Error())
+		return false
+	}
+
+	if clusterInfo.distribution() != "" {
+		logger.Successf("distribution: %s", clusterInfo.distribution())
+	}
+	logger.Successf("bootstrapped: %t", clusterInfo.bootstrapped)
+	return true
+}

cmd/flux/cluster_info.go

@@ -27,6 +27,8 @@ import (
 
 	kustomizev1 "github.com/fluxcd/kustomize-controller/api/v1"
 	sourcev1 "github.com/fluxcd/source-controller/api/v1"
+
+	"github.com/fluxcd/flux2/v2/pkg/manifestgen"
 )
 
 // bootstrapLabels are labels put on a resource by kustomize-controller. These labels on the CRD indicates
@@ -42,6 +44,8 @@ type fluxClusterInfo struct {
 	bootstrapped bool
 	// managedBy is the name of the tool being used to manage the installation of Flux.
 	managedBy string
+	// partOf indicates which distribution the instance is a part of.
+	partOf string
 	// version is the Flux version number in semver format.
 	version string
 }
@@ -68,7 +72,7 @@ func getFluxClusterInfo(ctx context.Context, c client.Client) (fluxClusterInfo,
 		return info, err
 	}
 
-	info.version = crdMetadata.Labels["app.kubernetes.io/version"]
+	info.version = crdMetadata.Labels[manifestgen.VersionLabelKey]
 
 	var present bool
 	for _, l := range bootstrapLabels {
@@ -78,11 +82,15 @@ func getFluxClusterInfo(ctx context.Context, c client.Client) (fluxClusterInfo,
 		info.bootstrapped = true
 	}
 
-	// the `app.kubernetes.io` label is not set by flux but might be set by other
+	// the `app.kubernetes.io/managed-by` label is not set by flux but might be set by other
 	// tools used to install Flux e.g Helm.
 	if manager, ok := crdMetadata.Labels["app.kubernetes.io/managed-by"]; ok {
 		info.managedBy = manager
 	}
+
+	if partOf, ok := crdMetadata.Labels[manifestgen.PartOfLabelKey]; ok {
+		info.partOf = partOf
+	}
 	return info, nil
 }
 
@@ -105,6 +113,14 @@ func confirmFluxInstallOverride(info fluxClusterInfo) error {
 	return err
 }
 
+func (info fluxClusterInfo) distribution() string {
+	distribution := info.version
+	if info.partOf != "" {
+		distribution = fmt.Sprintf("%s-%s", info.partOf, info.version)
+	}
+	return distribution
+}
+
 func installManagedByFlux(manager string) bool {
 	return manager == "" || manager == "flux"
 }

cmd/flux/cluster_info_test.go

@@ -102,6 +102,17 @@ func Test_getFluxClusterInfo(t *testing.T) {
 				version: "v2.1.0",
 			},
 		},
+		{
+			name: "CRD with version and part-of labels",
+			labels: map[string]string{
+				"app.kubernetes.io/version": "v2.1.0",
+				"app.kubernetes.io/part-of": "flux",
+			},
+			wantInfo: fluxClusterInfo{
+				version: "v2.1.0",
+				partOf:  "flux",
+			},
+		},
 	}
 
 	for _, tt := range tests {

cmd/flux/version.go

@@ -25,8 +25,9 @@ import (
 	"github.com/google/go-containerregistry/pkg/name"
 	"github.com/spf13/cobra"
 	v1 "k8s.io/api/apps/v1"
+	"k8s.io/apimachinery/pkg/api/errors"
 	"sigs.k8s.io/controller-runtime/pkg/client"
-	"sigs.k8s.io/yaml"
+	"sigs.k8s.io/yaml/goyaml.v2"
 
 	"github.com/fluxcd/flux2/v2/internal/utils"
 	"github.com/fluxcd/flux2/v2/pkg/manifestgen"
@@ -55,6 +56,12 @@ type versionFlags struct {
 
 var versionArgs versionFlags
 
+type versionInfo struct {
+	Flux         string            `yaml:"flux"`
+	Distribution string            `yaml:"distribution,omitempty"`
+	Controller   map[string]string `yaml:"controller,inline"`
+}
+
 func init() {
 	versionCmd.Flags().BoolVar(&versionArgs.client, "client", false,
 		"print only client version")
@@ -71,15 +78,27 @@ func versionCmdRun(cmd *cobra.Command, args []string) error {
 	ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
 	defer cancel()
 
-	info := map[string]string{}
-	info["flux"] = rootArgs.defaults.Version
+	// VersionInfo struct and goyaml is used because we care about the order.
+	// Without this `distribution` is printed before `flux` when the struct is marshalled.
+	info := &versionInfo{
+		Controller: map[string]string{},
+	}
+	info.Flux = rootArgs.defaults.Version
 
 	if !versionArgs.client {
 		kubeClient, err := utils.KubeClient(kubeconfigArgs, kubeclientOptions)
 		if err != nil {
 			return err
 		}
 
+		clusterInfo, err := getFluxClusterInfo(ctx, kubeClient)
+		if err != nil && !errors.IsNotFound(err) {
+			return err
+		}
+		if clusterInfo.distribution() != "" {
+			info.Distribution = clusterInfo.distribution()
+		}
+
 		selector := client.MatchingLabels{manifestgen.PartOfLabelKey: manifestgen.PartOfLabelValue}
 		var list v1.DeploymentList
 		if err := kubeClient.List(ctx, &list, client.InNamespace(*kubeconfigArgs.Namespace), selector); err != nil {
@@ -96,7 +115,7 @@ func versionCmdRun(cmd *cobra.Command, args []string) error {
 				if err != nil {
 					return err
 				}
-				info[name] = tag
+				info.Controller[name] = tag
 			}
 		}
 	}
@@ -105,7 +124,7 @@ func versionCmdRun(cmd *cobra.Command, args []string) error {
 	var err error
 
 	if versionArgs.output == "json" {
-		marshalled, err = json.MarshalIndent(&info, "", "  ")
+		marshalled, err = info.toJSON()
 		marshalled = append(marshalled, "\n"...)
 	} else {
 		marshalled, err = yaml.Marshal(&info)
@@ -119,6 +138,20 @@ func versionCmdRun(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
+func (info versionInfo) toJSON() ([]byte, error) {
+	mapInfo := map[string]string{
+		"flux": info.Flux,
+	}
+
+	if info.Distribution != "" {
+		mapInfo["distribution"] = info.Distribution
+	}
+	for k, v := range info.Controller {
+		mapInfo[k] = v
+	}
+	return json.MarshalIndent(&mapInfo, "", "  ")
+}
+
 func splitImageStr(image string) (string, string, error) {
 	ref, err := name.ParseReference(image)
 	if err != nil {

pkg/status/status.go

@@ -45,6 +45,16 @@ type StatusChecker struct {
 	logger       log.Logger
 }
 
+func NewStatusCheckerWithClient(c client.Client, pollInterval time.Duration, timeout time.Duration, log log.Logger) (*StatusChecker, error) {
+	return &StatusChecker{
+		pollInterval: pollInterval,
+		timeout:      timeout,
+		client:       c,
+		statusPoller: polling.NewStatusPoller(c, c.RESTMapper(), polling.Options{}),
+		logger:       log,
+	}, nil
+}
+
 func NewStatusChecker(kubeConfig *rest.Config, pollInterval time.Duration, timeout time.Duration, log log.Logger) (*StatusChecker, error) {
 	restMapper, err := runtimeclient.NewDynamicRESTMapper(kubeConfig)
 	if err != nil {
@@ -55,13 +65,7 @@ func NewStatusChecker(kubeConfig *rest.Config, pollInterval time.Duration, timeo
 		return nil, err
 	}
 
-	return &StatusChecker{
-		pollInterval: pollInterval,
-		timeout:      timeout,
-		client:       c,
-		statusPoller: polling.NewStatusPoller(c, restMapper, polling.Options{}),
-		logger:       log,
-	}, nil
+	return NewStatusCheckerWithClient(c, pollInterval, timeout, log)
 }
 
 func (sc *StatusChecker) Assess(identifiers ...object.ObjMetadata) error {