Add Jenkins e2e test job for multi-zone Ubernetes Lite

cluster/gce/util.sh

@@ -1252,7 +1252,17 @@ function test-teardown {
     --project "${PROJECT}" \
     --quiet \
     "${NODE_TAG}-${INSTANCE_PREFIX}-nodeports" || true
-  "${KUBE_ROOT}/cluster/kube-down.sh"
+  if [[ ${MULTIZONE:-} == "true" ]]; then
+      local zones=( ${E2E_ZONES} )
+      # tear them down in reverse order, finally tearing down the master too.
+      for ((zone_num=${#zones[@]}-1; zone_num>0; zone_num--))
+      do
+	  KUBE_GCE_ZONE="${zones[zone_num]}" KUBE_USE_EXISTING_MASTER="true" "${KUBE_ROOT}/cluster/kube-down.sh"
+      done
+      KUBE_GCE_ZONE="${zones[0]}" KUBE_USE_EXISTING_MASTER="false" "${KUBE_ROOT}/cluster/kube-down.sh"
+  else
+      "${KUBE_ROOT}/cluster/kube-down.sh"
+  fi
 }
 
 # SSH to a node by name ($1) and run a command ($2).

hack/e2e-internal/e2e-up.sh

@@ -31,5 +31,14 @@ source "${KUBE_VERSION_ROOT}/cluster/${KUBERNETES_PROVIDER}/util.sh"
 
 prepare-e2e
 
-KUBE_TEST_DEBUG=y "${KUBE_VERSION_ROOT}/cluster/kube-up.sh"
+if [[ ${MULTIZONE:-} == "true" ]]; then
+    for KUBE_GCE_ZONE in ${E2E_ZONES}
+    do
+	KUBE_GCE_ZONE="${KUBE_GCE_ZONE}" KUBE_USE_EXISTING_MASTER="${KUBE_USE_EXISTING_MASTER:-}" KUBE_TEST_DEBUG=y "${KUBE_VERSION_ROOT}/cluster/kube-up.sh"
+	KUBE_USE_EXISTING_MASTER="true" # For subsequent zones we use the existing master
+    done
+else
+    KUBE_TEST_DEBUG=y "${KUBE_VERSION_ROOT}/cluster/kube-up.sh"
+fi
+
 test-setup

hack/jenkins/e2e.sh

@@ -258,6 +258,26 @@ case ${JOB_NAME} in
     : ${PROJECT:="k8s-jkns-e2e-gce-slow"}
     : ${FAIL_ON_GCP_RESOURCE_LEAK:="true"}
     ;;
+  
+  # Runs all non-flaky, non-slow tests on GCE, sequentially,
+  # and in a multi-zone ("Ubernetes Lite") cluster.
+  kubernetes-e2e-gce-ubernetes-lite)
+    : ${E2E_CLUSTER_NAME:="jenkins-gce-e2e-ubelite"}
+    : ${E2E_PUBLISH_GREEN_VERSION:="true"}
+    : ${E2E_NETWORK:="e2e-gce-ubelite"}
+    : ${GINKGO_TEST_ARGS:="--ginkgo.skip=$(join_regex_allow_empty \
+          ${GCE_DEFAULT_SKIP_TESTS[@]:+${GCE_DEFAULT_SKIP_TESTS[@]}} \
+          ${GCE_FLAKY_TESTS[@]:+${GCE_FLAKY_TESTS[@]}} \
+          ${GCE_SLOW_TESTS[@]:+${GCE_SLOW_TESTS[@]}} \
+          )"}
+    : ${KUBE_GCE_INSTANCE_PREFIX="e2e-gce-ubelite"}
+    : ${PROJECT:="k8s-jkns-e2e-gce-ubelite"}
+    : ${ENABLE_DEPLOYMENTS:=true}
+    : ${FAIL_ON_GCP_RESOURCE_LEAK:="true"}
+    : ${E2E_MULTIZONE:="true"}
+    : ${E2E_ZONE:=""}
+    : ${E2E_ZONES:=us-central1-a us-central1-b us-central1-f}
+    ;;
 
   # Run the [Serial], [Disruptive], and [Feature:Restart] tests on GCE.
   kubernetes-e2e-gce-serial)
@@ -742,6 +762,7 @@ export AWS_SHARED_CREDENTIALS_FILE=${AWS_SHARED_CREDENTIALS_FILE:-}
 # GCE variables
 export INSTANCE_PREFIX=${E2E_CLUSTER_NAME}
 export KUBE_GCE_ZONE=${E2E_ZONE}
+export MULTIZONE=${E2E_MULTIZONE:-}  # for building multi-zone Ubernetes Lite clusters
 export KUBE_GCE_NETWORK=${E2E_NETWORK}
 export KUBE_GCE_INSTANCE_PREFIX=${KUBE_GCE_INSTANCE_PREFIX:-}
 export KUBE_GCE_NODE_PROJECT=${KUBE_GCE_NODE_PROJECT:-}
@@ -804,6 +825,7 @@ export E2E_TEST="${E2E_TEST:-true}"
 export E2E_DOWN="${E2E_DOWN:-true}"
 export E2E_CLEAN_START="${E2E_CLEAN_START:-}"
 export E2E_PUBLISH_GREEN_VERSION="${E2E_PUBLISH_GREEN_VERSION:-false}"
+export E2E_ZONES=${E2E_ZONES:-} #  for building multi-zone Ubernetes Lite clusters
 # Used by hack/ginkgo-e2e.sh to enable ginkgo's parallel test runner.
 export GINKGO_PARALLEL=${GINKGO_PARALLEL:-}
 export GINKGO_PARALLEL_NODES=${GINKGO_PARALLEL_NODES:-}

hack/jenkins/job-configs/kubernetes-e2e.yaml

@@ -94,6 +94,11 @@
         - 'gce-examples':
             description: 'Run e2e examples test on GCE using the latest successful Kubernetes build.'
             timeout: 90
+        - 'gce-ubernetes-lite':
+            description: 'Run E2E tests on GCE across multiple zones using the latest successful build.'
+            timeout: 150
+            emails: '$DEFAULT_RECIPIENTS, quinton@google.com, justin@fathomdb.com'
+            test-owner: 'quinton'
     jobs:
         - 'kubernetes-e2e-{suffix}'