Templatize l7 rc

cluster/common.sh

@@ -38,6 +38,7 @@ KUBE_RELEASE_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*
 # kube::release::parse_and_validate_ci_version()
 KUBE_CI_VERSION_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)-(beta|alpha)\\.(0|[1-9][0-9]*)(\\.(0|[1-9][0-9]*)\\+[-0-9a-z]*)?$"
 
+
 # Generate kubeconfig data for the created cluster.
 # Assumed vars:
 #   KUBE_USER
@@ -201,13 +202,14 @@ function gen-kube-bearertoken() {
     KUBE_BEARER_TOKEN=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
 }
 
-# Generate uuid
-# This function only works on systems with /proc/sys/kernel/random/uuid.
+# Generate uid
+# This function only works on systems with python. It generates a time based
+# UID instead of a UUID because GCE has a name length limit.
 #
 # Vars set:
-#   KUBE_UUID
-function gen-uuid {
-    KUBE_UUID=$(cat /proc/sys/kernel/random/uuid)
+#   KUBE_UID
+function gen-uid {
+    KUBE_UID=$(python -c 'import uuid; print uuid.uuid1().fields[0]')
 }
 
 
@@ -464,7 +466,7 @@ function build-kube-env {
   local file=$2
 
   build-runtime-config
-  gen-uuid
+  gen-uid
 
   rm -f ${file}
   cat >$file <<EOF
@@ -512,7 +514,7 @@ KUBE_DOCKER_REGISTRY: $(yaml-quote ${KUBE_DOCKER_REGISTRY:-})
 KUBE_ADDON_REGISTRY: $(yaml-quote ${KUBE_ADDON_REGISTRY:-})
 MULTIZONE: $(yaml-quote ${MULTIZONE:-})
 NON_MASQUERADE_CIDR: $(yaml-quote ${NON_MASQUERADE_CIDR:-})
-KUBE_UUID: $(yaml-quote ${KUBE_UUID:-})
+KUBE_UID: $(yaml-quote ${KUBE_UID:-})
 EOF
   if [ -n "${KUBELET_PORT:-}" ]; then
     cat >>$file <<EOF