Fixes

Signed-off-by: Anatolii Bazko <[email protected]>

pkg/deploy/dev-workspace/dev_workspace.go

@@ -22,6 +22,7 @@ import (
 	"github.com/eclipse-che/che-operator/pkg/deploy"
 	"github.com/eclipse-che/che-operator/pkg/util"
 	operatorsv1alpha1 "github.com/operator-framework/api/pkg/operators/v1alpha1"
+	"github.com/sirupsen/logrus"
 	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
@@ -105,6 +106,12 @@ var (
 )
 
 func ReconcileDevWorkspace(deployContext *deploy.DeployContext) (bool, error) {
+	if !util.IsOpenShift && util.GetServerExposureStrategy(deployContext.CheCluster) == "single-host" {
+		logrus.Warn("DevWorkspace Che operator can't be enabled in 'single-host mode'. See https://github.com/eclipse/che/issues/19714 for more details.")
+		logrus.Warn("To enable DevWorkspace Che operator set 'spec.server.serverExposureStrategy' to 'multi-host'.")
+		return true, nil
+	}
+
 	for _, syncItem := range syncDwCheItems {
 		done, err := syncItem(deployContext)
 		if !util.IsTestMode() {

pkg/util/util.go

@@ -194,17 +194,20 @@ func MergeMaps(first map[string]string, second map[string]string) map[string]str
 	return ret
 }
 
-func GetServerExposureStrategy(c *orgv1.CheCluster) string {
-	strategy := c.Spec.Server.ServerExposureStrategy
-	if strategy != "" {
-		return strategy
-	} else if c.Spec.DevWorkspace.Enable {
-		return "single-host"
-	} else if IsOpenShift {
+func GetServerExposureStrategy(cheCluster *orgv1.CheCluster) string {
+	if cheCluster.Spec.Server.ServerExposureStrategy != "" {
+		return cheCluster.Spec.Server.ServerExposureStrategy
+	}
+
+	if IsOpenShift {
+		// Explicitly switch to `single-host` mode
+		if cheCluster.Spec.DevWorkspace.Enable {
+			return "single-host"
+		}
 		return "multi-host"
-	} else {
-		return GetValue(c.Spec.K8s.IngressStrategy, "multi-host")
 	}
+
+	return GetValue(cheCluster.Spec.K8s.IngressStrategy, "multi-host")
 }
 
 func IsTestMode() (isTesting bool) {