Add minimal audit policy to local-up-cluster

Change-Id: Ia2cdb5a6a891665ece5365698f2989ba3782a5ec

hack/local-up-cluster.sh

@@ -116,6 +116,9 @@ START_MODE=${START_MODE:-"all"}
 # A list of controllers to enable
 KUBE_CONTROLLERS="${KUBE_CONTROLLERS:-"*"}"
 
+# Audit policy
+AUDIT_POLICY_FILE=${AUDIT_POLICY_FILE:-""}
+
 # sanity check for OpenStack provider
 if [ "${CLOUD_PROVIDER}" == "openstack" ]; then
     if [ "${CLOUD_CONFIG}" == "" ]; then
@@ -552,6 +555,17 @@ function start_apiserver {
       cloud_config_arg="--cloud-provider=external"
     fi
 
+    if [[ -n "${AUDIT_POLICY_FILE}" ]]; then
+      cat <<EOF > /tmp/kube-audit-policy-file
+# Log all requests at the Metadata level.
+apiVersion: audit.k8s.io/v1
+kind: Policy
+rules:
+- level: Metadata
+EOF
+      AUDIT_POLICY_FILE="/tmp/kube-audit-policy-file"
+    fi
+
     APISERVER_LOG=${LOG_DIR}/kube-apiserver.log
     ${CONTROLPLANE_SUDO} "${GO_OUT}/hyperkube" apiserver ${authorizer_arg} ${priv_arg} ${runtime_config} \
       ${cloud_config_arg} \
@@ -559,6 +573,8 @@ function start_apiserver {
       ${node_port_range} \
       --v=${LOG_LEVEL} \
       --vmodule="${LOG_SPEC}" \
+      --audit-policy-file="${AUDIT_POLICY_FILE}" \
+      --audit-log-path=${LOG_DIR}/kube-apiserver-audit.log \
       --cert-dir="${CERT_DIR}" \
       --client-ca-file="${CERT_DIR}/client-ca.crt" \
       --kubelet-client-certificate="${CERT_DIR}/client-kube-apiserver.crt" \