Permit custom names for API server lb/proxy containers. (#10166)

Signed-off-by: Pat Riehecky <riehecky@fnal.gov>

docs/ha-mode.md

@@ -26,7 +26,8 @@ You may also define the port the local internal loadbalancer uses by changing,
 `loadbalancer_apiserver_port`.  This defaults to the value of
 `kube_apiserver_port`.  It is also important to note that Kubespray will only
 configure kubelet and kube-proxy on non-master nodes to use the local internal
-loadbalancer.
+loadbalancer.  If you wish to control the name of the loadbalancer container,
+you can set the variable `loadbalancer_apiserver_pod_name`.
 
 If you choose to NOT use the local internal loadbalancer, you will need to
 use the [kube-vip](kube-vip.md) ansible role or configure your own loadbalancer to achieve HA. By default, it only configures a non-HA endpoint, which points to the

roles/kubernetes/node/defaults/main.yml

@@ -92,6 +92,7 @@ loadbalancer_apiserver_memory_requests: 32M
 loadbalancer_apiserver_cpu_requests: 25m
 
 loadbalancer_apiserver_keepalive_timeout: 5m
+loadbalancer_apiserver_pod_name: "{% if loadbalancer_apiserver_type == 'nginx' %}nginx-proxy{% else %}haproxy{% endif %}"
 
 # Uncomment if you need to enable deprecated runtimes
 # kube_api_runtime_config:

roles/kubernetes/node/templates/manifests/haproxy.manifest.j2

@@ -1,7 +1,7 @@
 apiVersion: v1
 kind: Pod
 metadata:
-  name: haproxy
+  name: {{ loadbalancer_apiserver_pod_name }}
   namespace: kube-system
   labels:
     addonmanager.kubernetes.io/mode: Reconcile

roles/kubernetes/node/templates/manifests/nginx-proxy.manifest.j2

@@ -1,7 +1,7 @@
 apiVersion: v1
 kind: Pod
 metadata:
-  name: nginx-proxy
+  name: {{ loadbalancer_apiserver_pod_name }}
   namespace: kube-system
   labels:
     addonmanager.kubernetes.io/mode: Reconcile