Merge pull request #113 from DirectXMan12/release/v0.3.0-alpha.1

Prep for v0.3.0 release

README.md

@@ -21,6 +21,7 @@ Compatibility matrix:
 
 Metrics Server | Metrics API group/version | Supported Kubernetes version
 ---------------|---------------------------|-----------------------------
+0.3.x          | `metrics.k8s.io/v1beta1`  | 1.8+
 0.2.x          | `metrics.k8s.io/v1beta1`  | 1.8+
 0.1.x          | `metrics/v1alpha1`        | 1.7
 
@@ -35,3 +36,43 @@ $ kubectl create -f deploy/1.7/
 # Kubernetes > 1.8
 $ kubectl create -f deploy/1.8+/
 ```
+
+## Flags
+
+Metrics Server supports all the standard Kubernetes API server flags, as
+well as the standard Kubernetes `glog` logging flags.  The most
+commonly-used ones are:
+
+- `--logtostderr`: log to standard error instead of files in the
+  container.  You generally want this on.
+
+- `--v=<X>`: set log verbosity.  It's generally a good idea to run a log
+  level 1 or 2 unless you're encountering errors.  At log level 10, large
+  amounts of diagnostic information will be reported, include API request
+  and response bodies, and raw metric results from Kubelet.
+
+- `--secure-port=<port>`: set the secure port.  If you're not running as
+  root, you'll want to set this to something other than the default (port
+  443).
+
+- `--tls-cert-file`, `--tls-private-key-file`: the serving certificate and
+  key files.  If not specified, self-signed certificates will be
+  generated, but it's recommended that you use non-self-signed
+  certificates in production.
+
+Additionally, Metrics Server defines a number of flags for configuring its
+behavior:
+
+- `--metric-resolution=<duration>`: the interval at which metrics will be
+  scraped from Kubelets (defaults to 60s).
+
+- `--kubelet-insecure-tls`: skip verifying Kubelet CA certificates.  Not
+  recommended for production usage, but can be useful in test clusters
+  with self-signed Kubelet serving certificates.
+
+- `--kubelet-port`: the port to use to connect to the Kubelet (defaults to
+  the default secure Kubelet port, 10250).
+
+- `--kubelet-preferred-address-types`: the order in which to consider
+  different Kubelet node address types when connecting to Kubelet.
+  Functions similarly to the flag of the same name on the API server.