Repair kube_proxy_exclude_cidrs (#4909)

roles/kubernetes/master/defaults/main/kube-proxy.yml

@@ -69,7 +69,7 @@ kube_proxy_min_sync_period: 0s
 kube_proxy_sync_period: 30s
 
 # A comma-separated list of CIDR's which the ipvs proxier should not touch when cleaning up IPVS rules.
-kube_proxy_exclude_cidrs: 'null'
+kube_proxy_exclude_cidrs: []
 
 # The ipvs scheduler type when proxy mode is ipvs
 # rr: round-robin

roles/kubernetes/master/templates/kubeadm-config.v1alpha3.yaml.j2

@@ -277,7 +277,7 @@ iptables:
  minSyncPeriod: {{ kube_proxy_min_sync_period }}
  syncPeriod: {{ kube_proxy_sync_period }}
 ipvs:
- excludeCIDRs: {{ kube_proxy_exclude_cidrs }}
+ excludeCIDRs: {{ "[]" if kube_proxy_exclude_cidrs is not defined or kube_proxy_exclude_cidrs == "null" or kube_proxy_exclude_cidrs | length == 0 else (kube_proxy_exclude_cidrs if kube_proxy_exclude_cidrs[0] == '[' else ("[" + kube_proxy_exclude_cidrs + "]" if (kube_proxy_exclude_cidrs[0] | length) == 1 else "[" + kube_proxy_exclude_cidrs | join(",") + "]")) }}
  minSyncPeriod: {{ kube_proxy_min_sync_period }}
  scheduler: {{ kube_proxy_scheduler }}
  syncPeriod: {{ kube_proxy_sync_period }}

roles/kubernetes/master/templates/kubeadm-config.v1beta1.yaml.j2

@@ -326,7 +326,7 @@ iptables:
  minSyncPeriod: {{ kube_proxy_min_sync_period }}
  syncPeriod: {{ kube_proxy_sync_period }}
 ipvs:
- excludeCIDRs: {{ kube_proxy_exclude_cidrs }}
+ excludeCIDRs: {{ "[]" if kube_proxy_exclude_cidrs is not defined or kube_proxy_exclude_cidrs == "null" or kube_proxy_exclude_cidrs | length == 0 else (kube_proxy_exclude_cidrs if kube_proxy_exclude_cidrs[0] == '[' else ("[" + kube_proxy_exclude_cidrs + "]" if (kube_proxy_exclude_cidrs[0] | length) == 1 else "[" + kube_proxy_exclude_cidrs | join(",") + "]")) }}
  minSyncPeriod: {{ kube_proxy_min_sync_period }}
  scheduler: {{ kube_proxy_scheduler }}
  syncPeriod: {{ kube_proxy_sync_period }}