Add support cAdvisor (#1908)

Signed-off-by: Haiwei Liu <carllhw@gmail.com>

roles/kubernetes/node/defaults/main.yml

@@ -79,3 +79,6 @@ kube_hyperkube_image_repo: ""
 
 # If non-empty, will use this string as identification instead of the actual hostname
 kube_override_hostname: "{{ ansible_hostname }}"
+
+# cAdvisor port
+kube_cadvisor_port: 0

roles/kubernetes/node/templates/kubelet.kubeadm.env.j2

@@ -21,7 +21,7 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 --authorization-mode=Webhook \
 --client-ca-file={{ kube_cert_dir }}/ca.crt \
 --pod-manifest-path={{ kube_manifest_dir }} \
---cadvisor-port=0 \
+--cadvisor-port={{ kube_cadvisor_port }} \
 {# end kubeadm specific settings #}
 --pod-infra-container-image={{ pod_infra_image_repo }}:{{ pod_infra_image_tag }} \
 --kube-reserved cpu={{ kubelet_cpu_limit }},memory={{ kubelet_memory_limit|regex_replace('Mi', 'M') }} \

roles/kubernetes/node/templates/kubelet.standard.env.j2

@@ -10,7 +10,9 @@ KUBELET_ADDRESS="--address={{ kubelet_bind_address }} --node-ip={{ kubelet_addre
 KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 {% endif %}
 {# Base kubelet args #}
-{% set kubelet_args_base %}--pod-manifest-path={{ kube_manifest_dir }} \
+{% set kubelet_args_base %}
+--pod-manifest-path={{ kube_manifest_dir }} \
+--cadvisor-port={{ kube_cadvisor_port }} \
 --pod-infra-container-image={{ pod_infra_image_repo }}:{{ pod_infra_image_tag }} \
 --node-status-update-frequency={{ kubelet_status_update_frequency }} \
 --docker-disable-shared-pid={{ kubelet_disable_shared_pid }} \