start: Remove workaround to delete apiserver pod in case of aggregato…

…r-client-ca regenerated

This workaround was required during OCP-4.3 timeframe and that bug is
also fixed so better to remove that workaround also.

- https://bugzilla.redhat.com/show_bug.cgi?id=1795163

pkg/crc/cluster/cluster.go

@@ -432,20 +432,6 @@ func WaitForPullSecretPresentOnInstanceDisk(ctx context.Context, sshRunner *ssh.
 	return errors.Retry(ctx, 7*time.Minute, pullSecretPresentFunc, 2*time.Second)
 }
 
-func WaitForRequestHeaderClientCaFile(ctx context.Context, sshRunner *ssh.Runner) error {
-	lookupRequestHeaderClientCa := func() error {
-		expired, err := checkCertValidity(sshRunner, AggregatorClientCert)
-		if err != nil {
-			return fmt.Errorf("Failed to the expiry date: %v", err)
-		}
-		if expired {
-			return &errors.RetriableError{Err: fmt.Errorf("certificate still expired")}
-		}
-		return nil
-	}
-	return errors.Retry(ctx, 8*time.Minute, lookupRequestHeaderClientCa, 2*time.Second)
-}
-
 func WaitForAPIServer(ctx context.Context, ocConfig oc.Config) error {
 	logging.Info("Waiting for kube-apiserver availability... [takes around 2min]")
 	waitForAPIServer := func() error {
@@ -460,23 +446,6 @@ func WaitForAPIServer(ctx context.Context, ocConfig oc.Config) error {
 	return errors.Retry(ctx, 4*time.Minute, waitForAPIServer, time.Second)
 }
 
-func DeleteOpenshiftAPIServerPods(ctx context.Context, ocConfig oc.Config) error {
-	if err := WaitForOpenshiftResource(ctx, ocConfig, "pod"); err != nil {
-		return err
-	}
-
-	deleteOpenshiftAPIServerPods := func() error {
-		cmdArgs := []string{"delete", "pod", "--all", "--force", "-n", "openshift-apiserver"}
-		_, stderr, err := ocConfig.WithFailFast().RunOcCommand(cmdArgs...)
-		if err != nil {
-			return &errors.RetriableError{Err: fmt.Errorf("Failed to delete pod from openshift-apiserver namespace %v: %s", err, stderr)}
-		}
-		return nil
-	}
-
-	return errors.Retry(ctx, 60*time.Second, deleteOpenshiftAPIServerPods, time.Second)
-}
-
 func CheckProxySettingsForOperator(ocConfig oc.Config, proxy *httpproxy.ProxyConfig, deployment, namespace string) (bool, error) {
 	if !proxy.IsEnabled() {
 		logging.Debugf("No proxy in use")

pkg/crc/machine/start.go

@@ -602,29 +602,6 @@ func (client *client) Start(ctx context.Context, startConfig types.StartConfig)
 		}
 	}
 
-	// In Openshift 4.3, when cluster comes up, the following happens
-	// 1. After the openshift-apiserver pod is started, its log contains multiple occurrences of `certificate has expired or is not yet valid`
-	// 2. Initially there is no request-header's client-ca crt available to `extension-apiserver-authentication` configmap
-	// 3. In the pod logs `missing content for CA bundle "client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file"`
-	// 4. After ~1 min /etc/kubernetes/static-pod-resources/kube-apiserver-certs/configmaps/aggregator-client-ca/ca-bundle.crt is regenerated
-	// 5. It is now also appear to `extension-apiserver-authentication` configmap as part of request-header's client-ca content
-	// 6. Openshift-apiserver is able to load the CA which was regenerated
-	// 7. Now apiserver pod log contains multiple occurrences of `error x509: certificate signed by unknown authority`
-	// When the openshift-apiserver is in this state, the cluster is non functional.
-	// A restart of the openshift-apiserver pod is enough to clear that error and get a working cluster.
-	// This is a work-around while the root cause is being identified.
-	// More info: https://bugzilla.redhat.com/show_bug.cgi?id=1795163
-	if certsExpired[cluster.AggregatorClientCert] {
-		logging.Debug("Waiting for the renewal of the request header client ca...")
-		if err := cluster.WaitForRequestHeaderClientCaFile(ctx, sshRunner); err != nil {
-			return nil, errors.Wrap(err, "Failed to wait for aggregator client ca renewal")
-		}
-
-		if err := cluster.DeleteOpenshiftAPIServerPods(ctx, ocConfig); err != nil {
-			return nil, errors.Wrap(err, "Cannot delete OpenShift API Server pods")
-		}
-	}
-
 	if err := updateKubeconfig(ctx, ocConfig, sshRunner, vm.bundle.GetKubeConfigPath()); err != nil {
 		return nil, errors.Wrap(err, "Failed to update kubeconfig file")
 	}