add sielnt flag

cmds/ocm/commands/controllercmds/common/manifests.go

@@ -102,6 +102,7 @@ func fetchObjects(ctx context.Context, octx clictx.Context, releaseURL, baseURL,
 		}
 
 		out.Outf(octx, string(content))
+
 		return nil, nil
 	}
 	out.Outf(octx, "► applying to cluster...\n")

cmds/ocm/commands/controllercmds/install/cmd.go

@@ -45,6 +45,7 @@ type Command struct {
 	DryRun                   bool
 	SkipPreFlightCheck       bool
 	InstallPrerequisites     bool
+	Silent                   bool
 	SM                       *ssa.ResourceManager
 }
 
@@ -75,13 +76,21 @@ func (o *Command) AddFlags(set *pflag.FlagSet) {
 	set.BoolVarP(&o.DryRun, "dry-run", "d", false, "if enabled, prints the downloaded manifest file")
 	set.BoolVarP(&o.SkipPreFlightCheck, "skip-pre-flight-check", "s", false, "skip the pre-flight check for clusters")
 	set.BoolVarP(&o.InstallPrerequisites, "install-prerequisites", "i", true, "install prerequisites required by ocm-controller")
+	set.BoolVarP(&o.Silent, "silent", "l", false, "don't fail on error")
 }
 
 func (o *Command) Complete(args []string) error {
 	return nil
 }
 
-func (o *Command) Run() error {
+func (o *Command) Run() (err error) {
+	defer func() {
+		// don't return any errors
+		if o.Silent {
+			err = nil
+		}
+	}()
+
 	kubeconfigArgs := genericclioptions.NewConfigFlags(false)
 	sm, err := NewResourceManager(kubeconfigArgs)
 	if err != nil {

cmds/ocm/commands/controllercmds/install/install_cert_manager.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/fluxcd/pkg/ssa"
 	"github.com/mandelsoft/filepath/pkg/filepath"
+
 	"github.com/open-component-model/ocm/cmds/ocm/commands/controllercmds/common"
 	"github.com/open-component-model/ocm/pkg/out"
 )
@@ -23,6 +24,11 @@ func (o *Command) installPrerequisites(ctx context.Context) error {
 	}
 
 	out.Outf(o.Context, "✔ cert-manager successfully installed\n")
+
+	if o.DryRun {
+		return nil
+	}
+
 	out.Outf(o.Context, "► creating certificate for internal registry\n")
 
 	if err := o.createRegistryCertificate(); err != nil {

cmds/ocm/commands/controllercmds/uninstall/cmd.go

@@ -39,6 +39,7 @@ type Command struct {
 	CertManagerVersion       string
 	SM                       *ssa.ResourceManager
 	UninstallPrerequisites   bool
+	Silent                   bool
 	DryRun                   bool
 }
 
@@ -69,13 +70,21 @@ func (o *Command) AddFlags(set *pflag.FlagSet) {
 	set.DurationVarP(&o.Timeout, "timeout", "t", 1*time.Minute, "maximum time to wait for deployment to be ready")
 	set.BoolVarP(&o.UninstallPrerequisites, "uninstall-prerequisites", "p", false, "uninstall prerequisites required by ocm-controller")
 	set.BoolVarP(&o.DryRun, "dry-run", "d", false, "if enabled, prints the downloaded manifest file")
+	set.BoolVarP(&o.Silent, "silent", "l", false, "don't fail on error")
 }
 
 func (o *Command) Complete(args []string) error {
 	return nil
 }
 
-func (o *Command) Run() error {
+func (o *Command) Run() (err error) {
+	defer func() {
+		// don't return any errors
+		if o.Silent {
+			err = nil
+		}
+	}()
+
 	kubeconfigArgs := genericclioptions.NewConfigFlags(false)
 	sm, err := NewResourceManager(kubeconfigArgs)
 	if err != nil {