output: configmaps: use KUBERNETES_SERVICE_* environment (#39)

* Use KUBERNETES_* environment

The Kubernetes API Server host and port could be non-default or restricted across namespaces.  The cluster domain may not be `cluster.local` and Network Policies may restrict access.  The KUBERNETES_SERVICE_* environment variables always contain the correct host and port for the cluster.

Signed-off-by: Tim Hobbs <[email protected]>

* Update kafka configmap

Signed-off-by: Tim Hobbs <[email protected]>

Author: hobti01

output/elasticsearch/fluent-bit-configmap.yaml

@@ -37,7 +37,7 @@ data:
     [FILTER]
         Name                kubernetes
         Match               kube.*
-        Kube_URL            https://kubernetes.default.svc.cluster.local:443
+        Kube_URL            https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT_HTTPS}
         Merge_Log           On
         K8S-Logging.Parser  On
 

output/kafka/fluent-bit-configmap.yaml

@@ -37,7 +37,7 @@ data:
     [FILTER]
         Name                kubernetes
         Match               kube.*
-        Kube_URL            https://kubernetes.default.svc.cluster.local:443
+        Kube_URL            https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT_HTTPS}
         Merge_Log           On
         K8S-Logging.Parser  On