[apiserver-kubelet/tracing]: add distributed tracing config variables (#10795)

* [apiserver-kubelet/tracing]: add distributed tracing config flags

Signed-off-by: Ugur Ozturk <ugurozturk918@gmail.com>

* [apiserver-kubelet/tracing]: add distributed tracing config flags - fix

Signed-off-by: Ugur Ozturk <ugurozturk918@gmail.com>

* [apiserver-kubelet/tracing]: add distributed tracing config flags - fix

Signed-off-by: Ugur Ozturk <ugurozturk918@gmail.com>

---------

Signed-off-by: Ugur Ozturk <ugurozturk918@gmail.com>

roles/kubernetes/control-plane/templates/apiserver-tracing.yaml.j2

@@ -0,0 +1,4 @@
+apiVersion: apiserver.config.k8s.io/v1beta1
+kind: TracingConfiguration
+endpoint: {{ kube_apiserver_tracing_endpoint }}
+samplingRatePerMillion: {{ kube_apiserver_tracing_sampling_rate_per_million }}

roles/kubernetes/control-plane/templates/kubeadm-config.v1beta3.yaml.j2

@@ -227,6 +227,9 @@ apiServer:
 {% if kubelet_rotate_server_certificates %}
     kubelet-certificate-authority: {{ kube_cert_dir }}/ca.crt
 {% endif %}
+{% if kube_apiserver_tracing %}
+    tracing-config-file: {{ kube_config_dir }}/tracing/apiserver-tracing.yaml
+{% endif %}
 {% if kubernetes_audit or kube_token_auth | default(true) or kube_webhook_token_auth | default(false) or ( cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce"] ) or apiserver_extra_volumes or ssl_ca_dirs | length %}
   extraVolumes:
 {% if cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce"] %}
@@ -267,6 +270,13 @@ apiServer:
     readOnly: false
     pathType: DirectoryOrCreate
 {% endif %}
+{% if kube_apiserver_tracing %}
+  - name: tracing
+    hostPath: {{ kube_config_dir }}/tracing
+    mountPath: {{ kube_config_dir }}/tracing
+    readOnly: true
+    pathType: DirectoryOrCreate
+{% endif %}
 {% for volume in apiserver_extra_volumes %}
   - name: {{ volume.name }}
     hostPath: {{ volume.hostPath }}