kubeadm: support feature_gates

kvirt/cluster/kubeadm/__init__.py

@@ -237,6 +237,9 @@ def create(config, plandir, cluster, overrides):
                      insecure=True, cmd=urlcmd, vmport=disconnected_vmport)
         disconnected_url = os.popen(urlcmd).read().strip()
         data['disconnected_url'] = disconnected_url
+    feature_gates = data['feature_gates']
+    if feature_gates:
+        data['feature_gates'] = [f"{feature_gate}=true" for feature_gate in feature_gates]
     result = config.plan(plan, inputfile=f'{plandir}/bootstrap.yml', overrides=data)
     if result['result'] != "success":
         return result

kvirt/cluster/kubeadm/bootstrap.sh

@@ -19,7 +19,8 @@ CERTKEY={{ cert_key }}
 TOKEN={{ token }}
 K8S_VERSION='{{ "--kubernetes-version %s" % minor_version if minor_version is defined else "" }}'
 REGISTRY='{{ "--image-repository %s" % disconnected_url if disconnected_url != None else "" }}'
-kubeadm init --control-plane-endpoint "${API_IP}:6443" --pod-network-cidr $POD_CIDR --service-cidr $SERVICE_CIDR --certificate-key $CERTKEY --upload-certs --token $TOKEN --token-ttl 0 --apiserver-cert-extra-sans ${API_IP} $K8S_VERSION $REGISTRY
+FEATUREGATES='{{ "--feature-gates %s" % ','.join(feature_gates) if feature_gates else "" }}'
+kubeadm init --control-plane-endpoint "${API_IP}:6443" --pod-network-cidr $POD_CIDR --service-cidr $SERVICE_CIDR --certificate-key $CERTKEY --upload-certs --token $TOKEN --token-ttl 0 --apiserver-cert-extra-sans ${API_IP} $K8S_VERSION $REGISTRY $FEATUREGATES
 
 # config cluster credentials
 cp /etc/kubernetes/admin.conf /root/kubeconfig

kvirt/cluster/kubeadm/kcli_default.yml

@@ -87,3 +87,4 @@ disconnected_url:
 disconnected_user: dummy
 disconnected_password: dummy
 disconnected_sync: true
+feature_gates: []